garmin g3x experimental installation manual

Garmin G3X manual

manual Garmin G3X

G3X/G3X Touch

Installation manual.

User manual

Installation Guide

View the manual for the Garmin G3X here, for free. This manual comes under the category not categorized and has been rated by 1 people with an average of a 8.7. This manual is available in the following languages: English. Do you have a question about the Garmin G3X or do you need help?  Ask your question here

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Question and answer

How do you locate the Hobbs meter reading from the G3x ?

The Garmin G3X is a versatile and advanced avionics display system that offers pilots enhanced situational awareness and seamless integration in the cockpit. With its sleek design and intuitive interface, it provides a user-friendly experience for pilots of various aircraft types. The G3X features a high-resolution touchscreen display, allowing for easy access to essential flight information such as navigation, engine performance, and weather data. It provides pilots with accurate and up-to-date information, enhancing their decision-making capabilities and overall flight safety. Designed with durability in mind, the G3X is constructed with high-quality materials, ensuring its reliability in harsh environmental conditions. Its robust design allows it to withstand the rigors of daily use in the cockpit, making it suitable for both general aviation and experimental aircraft applications. In addition to its primary display functionalities, the G3X offers a range of optional features and add-ons, including synthetic vision technology, traffic and terrain awareness, and advanced autopilot integration. These additional features provide pilots with even greater situational awareness and control during flight. The G3X also benefits from Garmin's renowned reputation for continuous product support and updates. Garmin regularly releases software updates and new feature enhancements to further improve the functionality and performance of the G3X system. Overall, the Garmin G3X is a versatile and reliable avionics display system that provides pilots with essential flight information and enhanced situational awareness. Its user-friendly interface and robust design make it a valuable addition to any cockpit.

Can't find the answer to your question in the manual? You may find the answer to your question in the FAQs about the Garmin G3X below.

How do I change the display settings on my Garmin G3X?

To adjust the display settings, go to the main menu and select "Settings." From there, navigate to the "Display" section where you can customize brightness, contrast, and color settings to suit your preferences.

Can I customize the data fields shown on the main screen of my Garmin G3X?

Yes, you can personalize the data fields displayed on the main screen. Simply tap and hold on any data field, then select "Change Data Field." Choose the desired parameter from the available options to tailor the information displayed to your needs.

How can I calibrate the altitude reading on my Garmin G3X?

To calibrate the altitude reading, access the altimeter settings from the main menu. Locate the calibration option and follow the on-screen prompts to input the correct altitude for your current location. This will ensure accurate altitude readings during your flights.

Is it possible to save flight plans on my Garmin G3X?

Absolutely! You can save flight plans on your Garmin G3X. In the flight planning section, select "Save Plan" and provide a name for your plan. This will allow you to easily retrieve and load your saved flight plans for future use.

How do I update the software on my Garmin G3X?

To update the software on your Garmin G3X, connect the device to a computer with internet access using the provided USB cable. Visit the Garmin website and download the latest software update for your device model. Follow the on-screen instructions to install the update and ensure your device is running the most up-to-date software version.

Is the manual of the Garmin G3X available in English?

Yes, the manual of the Garmin G3X is available in English .

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Garmin G3X Installation Manual

• Installation manual (1011 pages)
• Pilot's manual (470 pages)
• Maintenance manual (134 pages)
• page of 268 Go / 268

Table of Contents

Troubleshooting, installation manual.

• Paragraph Page

1 Installation Overview

• Unpacking Unit
• Introduction
• System Overview
• System Architecture
• Physical Specifications
• Cooling Requirements
• Installation Requirements
• Wiring/Cabling Considerations
• Wiring Harness Installation
• Equipment Description
• Electrical Specifications
• Environmental Specifications
• Installation Considerations
• Additional Equipment
• Mounting Requirements
• Unit Installation
• Maintenance
• Panel Cutout Template
• Gdu 37X Panel Cutout Template
• GMU 44 TSO/ETSO Compliance
• GSU 73/GMU 44 Interconnect Harness Fabrication Instructions
• Mounting Instructions
• TSO/ETSO Compliance

6 GPS/XM Antennas

• Non-Garmin Antennas
• Garmin GPS Antennas
• Garmin XM Antennas
• Antenna Mounting Considerations
• Antenna Grounding Plane
• Teardrop Footprint Antenna Installation (GA 55 and GA 56)
• Antenna Installation Instructions
• ARINC 743 Footprint Antenna Installation (GA 55A, GA 57X)
• Non-Structural Mount Installation

7 Software, Configuration, Databases, and XM Activation

• Software, Database, and Audio Data Identification
• Software Loading Procedure
• Configuration Mode
• Main Configuration Page
• Acft Configuration Page
• Units Configuration Page
• Sound Configuration Page
• Comm Configuration Page
• Updating Garmin Databases
• Available Databases
• Aopa Airport Directory
• XM Activation Instructions (GDU 375 Only)
• GDU Splashscreen
• Checklist Editor

8 Engine/Airframe Sensor Installation and Configuration

• Engine/Airframe Sensor Options
• Engine Sensor Installation
• Engine/Airframe Input Configuration

9 Post-Installation Checkout and Calibration Procedures

• Recommended Test Equipment
• GDU 37X Test Procedure
• GSU 73/GMU 44 Post-Installation Calibration Procedures
• External Interface Configuration (Garmin Units Only)

10 Troubleshooting

• General Troubleshooting
• Air Data Troubleshooting
• Engine Indication Troubleshooting
• AHRS Troubleshooting
• Post Installation Calibration Procedures
• GSU 73 Data Logging

11 Return to Service Information

Appendix a pinouts, appendix b connector installation instructions.

• Thermocouple Installation into a Backshell
• Jackscrew Configuration Module Installation into a Jackscrew Backshell
• Jackscrew Backshell Installation Instructions

Appendix C Airframe Specific Installation Guidance

• Van's Aircraft
• Lancair Aircraft

Appendix D Outline and Installation Drawings

Appendix e g3x core interconnect drawings, appendix f: external interface drawings (example only, appendix g sensor wiring examples, appendix h lycoming/continental sensor wiring examples, appendix i rotax sensor wiring examples, appendix j jabiru sensor wiring examples.

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• 1 Configuration Mode
• 2 Engine/Airframe Sensor Installation and Configuration
• 3 Engine Sensor Installation
• Download this manual
• Troubleshooting 171
• Air Data Troubleshooting 173
• Engine Indication Troubleshooting 174
• AHRS Troubleshooting 175

Related Manuals for Garmin G3X

Summary of Contents for Garmin G3X

Page 1: installation manual.

• Page 2 Garmin. Garmin hereby grants permission to download a single copy of this manual and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed and...
• Page 3 Added multiple sensor note and power supply table A-13 A.3.6.2 Added discrete output info D-1–I-2 Appdx D–I Updated drawings, changed to 8.5” x 11” format J-1, J-2 Appdx J Added Appendix J G3X Installation Manual Page i 190-01115-01 Revision E...
• Page 4 NOTE The Garmin G3X system includes products like the GDU 37X and the GSU 73 that are not TSO-certified products and have received no FAA approval or endorsement. Consequently the G3X system is not type-certificated and is not suitable for installation in type-certificated aircraft.

Page 5: Table Of Contents

Page 6: paragraph page.

• Page 7 C.2 Van’s Aircraft..........................C-2 C.3 Lancair Aircraft..........................C-4 APPENDIX D: Outline and Installation Drawings.................. D-1 APPENDIX E: G3X Core Interconnect Drawings .................. E-1 APPENDIX F: External Interface Drawings (Example Only)..............F-1 APPENDIX G: Sensor Wiring Examples ....................G-1 APPENDIX H: Lycoming/Continental Sensor Wiring Examples............H-1 APPENDIX I: Rotax Sensor Wiring Examples ..................I-1...
• Page 8 LIST OF ILLUSTRATIONS FIGURE PAGE G3X Interconnect Example......................1-2 Configuration Module........................1-3 BNC Connector Installation ......................1-9 TNC Connector Installation ......................1-10 GDU 37X Unit View ........................2-1 GDU 37X Mounting Accessories ....................2-4 GDU 37X Panel Cutout template.....................2-6 GMU 44 Unit View..........................3-1 GSU 73 Unit View ...........................4-1 GSU 73 Air Hose Fitting Locations....................4-5...
• Page 9 10-5 Heading Failure Indication (Full-Screen PFD)................10-6 10-6 Attitude and Heading Failure Indications..................10-7 10-7 Data Logger, Start Screen......................10-9 10-8 Data Logger, Download Screen....................10-10 10-9 Data Logger, Recording Screen....................10-10 10-10 Data Logger, Connection Screen....................10-11 G3X Installation Manual Page vii 190-01115-01 Revision E...
• Page 10 C-20 View Looking AFT at Recommended Magnetometer Location ..........C-13 C-21 Example Magnetometer Shelf ..................... C-14 C-22 Fill Detail for Corner Radii and Magnetometer Shelf ..............C-14 C-23 Magnetometer Shelf with Layup ....................C-15 Page viii G3X Installation Manual Revision E 190-01115-01...
• Page 11 G-1.4 Electrical and Discrete Input/Output Examples ................G-4 H-1.1 Notes.............................. H-1 H-1.2 4/6 Cylinder Lycoming/Continental Sensor Wiring Examples ............. H-2 I-1.1 Notes and Rotax 912 Sensor Wiring Examples ................I-1 J-1.2 Notes and Jabiru Sensor Wiring Examples ..................J-1 G3X Installation Manual Page ix 190-01115-01 Revision E...
• Page 12 G3X LRU Part Numbers ........................1-5 Contents of GDU 37X Assembly (010-00667-XX).................1-5 G3X LRU Power Requirements.......................1-5 G3X LRU Physical Specifications....................1-6 Contents of G3X Installation Kit (K10-00017-00) ................1-7 Contents of G3X LRU Kit (K10-00016-00) ..................1-7 Pin Contact and Crimp Tools Part Numbers..................1-8 GDU 37X Supply Voltages......................2-2 GDU 37X Power Requirements.......................2-2...
• Page 13 Minimum Distance Required Between Tube Structure and Antenna ..........6-30 Compatible Engine/Airframe Input Sensors ..................8-1 Contents of G3X Sensor Kit, 4 Cylinder Lycoming/Continental (K00-00512-00) ......8-3 Contents of G3X Sensor Kit, 6 Cylinder Lycoming/Continental (K00-00513-00) ......8-4 Contents of G3X Sensor Kit, Rotax 912 (K00-00514-00)...............8-4 Record Mode Selections ........................8-31...
• Page 14 Limited Warranty for Garmin GMU 44 and GTP 59 Products The Garmin products GMU 44 and GTP 59 are warranted to be free from defects in materials or workmanship for two years from the date of purchase. Within the applicable period, Garmin will, at its sole option, repair or replace any components that fail in normal use.
• Page 15 Limited Warranty for GSU 73 and GDU 37X Products The Garmin products GSU 73 and GDU 37X are warranted to be free from defects in materials or workmanship for one year from the date of purchase. Within the applicable period, Garmin will, at its sole option, repair or replace any components that fail in normal use.
• Page 16 SERVICE SERVICE PURPOSE OF MODIFICATION LEVEL BULLETIN BULLETIN NUMBER DATE Improved HSCM accuracy when using +28V supply Improved backup capacitor circuit to increase backup time in certain under-voltage conditions Page xiv G3X Installation Manual Revision E 190-01115-01...

Page 17: Installation Overview

Page 18: system overview.

• Page 19 1.3.2 Configuration Modules The G3X system is designed to store configuration and calibration data in multiple locations to retain the configuration of the system during maintenance. Figure 1-2 shows the configuration module that installs on both the GDU 37X (PFD) and the GSU 73 connector backshell.
• Page 20 These waypoints and associated course line are made available for monitoring purposes only. When using an external GPS navigator with the G3X, changes to the active flight plan must be entered on the external GPS unit, and the following G3X functions are disabled: •...

Page 21: General Lru Specifications

Page 22: physical specifications, page 23: installation requirements, page 24: wiring harness installation.

• Page 25 Figure 1-3 or Figure 1-4. If the connector is provided by the installer, follow the connector manufacturer’s instructions for cable preparation. Figure 1-3. BNC Connector Installation G3X Installation Manual – Installation Overview Page 1-9 190-01115-01 Revision E...
• Page 26 Connector kits include backshell assemblies. The backshell assembly houses the configuration module and a thermocouple reference junction (if applicable, see Appendix D). Garmin’s backshell connectors give the installer the ability to quickly and easily terminate shield grounds at the backshell housing. The instructions needed to install the Jackscrew Backshell, Configuration Module, and Thermocouple are located in Appendix B.

Page 27: Gdu 37X

Page 28: electrical specifications, page 29: environmental specifications, page 30: installation considerations, page 31: mounting requirements, page 32: panel cutout template, page 33: equipment description, page 34: environmental specifications, page 35: installation requirements.

• Page 36 The heading offset procedure is described in Section 8.3.4. It is strongly preferred that the GMU 44 alignment is within 0.5° of the aircraft longitudinal axis, rather than using the heading offset procedure. Page 3-4 G3X Installation Manual – GMU 44 Revision E 190-01115-01...

Page 37: Gsu 73/Gmu 44 Interconnect Harness Fabrication Instructions

Page 38: maintenance, page 39: equipment description.

• Page 40 Power Input 0.80 Amp @ 28 Vdc (Max) *Garmin recommends using Mod 1 level GSU 73 in aircraft that use a +28V supply voltage and intend to monitor current on high voltage devices such as the aircraft alternator. Page 4-2 G3X Installation Manual –...
• Page 41 Unit Assembly, GSU 73 011-01817-00* P731 Connector Kit, GSU 73 011-01818-00** P732 Connector Kit, GSU 73 011-01818-01** *Included in G3X LRU Kit (K10-00016-00) **Included in G3X Installation Kit (K10-00017-00) Table 4-4. Contents of P731 Connector Kit (011-01818-00)** Item Garmin P/N Quantity...
• Page 42 Connector kits include backshell assemblies. The backshell assembly houses the configuration module (P732 only) and a thermocouple reference junction (if applicable). Garmin’s backshell connectors give the installer the ability to quickly and easily terminate shield grounds at the backshell housing. The instructions needed to install the Jackscrew Backshell, Configuration Module, and Thermocouple are located in Appendix B.
• Page 43 3. Use care to avoid getting fluids or particles anywhere within the pitot and static lines connected to the GSU 73. The installer must fabricate any additional mounting equipment needed. Use outline and installation drawings in Appendix D for reference. G3X Installation Manual – GSU 73 Page 4-5 190-01115-01 Revision E...
• Page 44 Mount the GSU 73 with the connectors aligned within 1.0 deg of either the longitudinal or lateral axis of the aircraft. The direction of the unit will be accounted for during the calibration procedure as shown in Figure 4-3. Figure 4-3. GSU 73 Orientation Calibration Page 4-6 G3X Installation Manual – GSU 73 Revision E 190-01115-01...
• Page 45 4. Connect backshell connector and hoses. NOTE When mounting the GSU 73 to the airframe, it is important to ensure that fastening hardware is tight for proper unit operation. G3X Installation Manual – GSU 73 Page 4-7 190-01115-01 Revision E...
• Page 46 2010, 2015, and every five years thereafter, so long as the GSU 73 remains a Garmin –supported product. The IGRF model can be updated by the end user via the Garmin website (www.garmin.com), it is not necessary to return the GSU 73 to Garmin for this update. Otherwise maintenance of the GSU 73 is ‘on condition’...

Page 47: Installation Requirements

Page 48: tso/etso compliance, page 49: installation considerations, page 50: unit installation, page 51: gps/xm antennas, page 52: garmin gps antennas, page 53: garmin xm antennas, page 54: antenna mounting considerations.

• Page 55 VHF COM or the (re-radiating) ELT transmitter. NOTE The separation requirement does not apply to GPS and COM combination antennas, provided the antenna has been tested to meet Garmin’s minimum performance standards. The separating requirement includes the combination with an XM antenna element as well.
• Page 56 Figure 6-1 shows the recommended placement of antennas. Figure 6-1. Recommended Antenna Placement Page 6-6 G3X Installation Manual – Antennas Revision E 190-01115-01...
• Page 57 Modifications of this sort are not recommended or inferred by Garmin or the installation of the G3X, and the installer should seek the guidance of the kit manufacture for such modifications.

Page 58: Antenna Grounding Plane

Page 59: teardrop footprint antenna installation (ga 55 and ga 56), page 60: antenna installation instructions.

• Page 61 6.5.3 Reference Figures Figure 6-4. Doubler Design, Teardrop Footprint Antenna, Skin Thickness 0.032" to 0.049" Figure 6-5. Doubler Design, Teardrop Footprint Antenna, Skin Thickness 0.049" to 0.051" G3X Installation Manual – Antennas Page 6-11 190-01115-01 Revision E...
• Page 62 Figure 6-6. Doubler Design, Teardrop Footprint Antenna, Skin Thickness 0.051" to 0.063" Figure 6-7. Sample Doubler Location, Teardrop Footprint Antenna, Metal Skin Aircraft Page 6-12 G3X Installation Manual – Antennas Revision E 190-01115-01...
• Page 63 Figure 6-8. Skin Cutout Detail, Teardrop Footprint Antenna, Skin Thickness 0.032" to 0.049" Figure 6-9. Skin Cutout Detail, Teardrop Footprint Antenna, Skin Thickness 0.049" to 0.051" G3X Installation Manual – Antennas Page 6-13 190-01115-01 Revision E...
• Page 64 Figure 6-10. Skin Cutout Detail, Teardrop Footprint Antenna, Skin Thickness 0.051" to 0.063" Figure 6-11. Doubler Installation, Teardrop Footprint Antenna, Skin Thickness 0.032" to 0.049" Page 6-14 G3X Installation Manual – Antennas Revision E 190-01115-01...
• Page 65 Figure 6-12. Doubler Installation, Teardrop Footprint Antenna, Skin Thickness 0.049" to 0.051" Figure 6-13. Doubler Installation, Teardrop Footprint Antenna, Skin Thickness 0.051" to 0.063" G3X Installation Manual – Antennas Page 6-15 190-01115-01 Revision E...

Page 66: Arinc 743 Footprint Antenna Installation (Ga 55A, Ga 57X)

• Page 67 4. Locking nuts are required to secure the antenna (locking nuts installed on doubler). Torque the four supplied #10-32 stainless steel screws (Garmin P/N: 211-60212-20, MS51958-67, or equivalent) 20-25 in-lbs. Torque should be applied evenly across all mounting studs to avoid deformation of the mounting area.
• Page 68 6.6.3 Reference Figures Figure 6-14. Doubler Design, ARINC 743 Footprint Antenna, Skin Thickness 0.032" to 0.049" Page 6-18 G3X Installation Manual – Antennas Revision E 190-01115-01...
• Page 69 Figure 6-15. Doubler Design, ARINC 743 Footprint Antenna, Skin Thickness 0.049" to 0.051" G3X Installation Manual – Antennas Page 6-19 190-01115-01 Revision E...
• Page 70 Figure 6-16. Doubler Design, ARINC 743 Footprint Antenna, Skin Thickness 0.051" to 0.063" Page 6-20 G3X Installation Manual – Antennas Revision E 190-01115-01...
• Page 71 Figure 6-17. Sample Doubler Location, ARINC 743 Antenna, Metal Skin Aircraft Figure 6-18. Skin Cutout Detail, ARINC 743 Footprint Antenna, Skin Thickness 0.032" to 0.049" G3X Installation Manual – Antennas Page 6-21 190-01115-01 Revision E...
• Page 72 Figure 6-19. Skin Cutout Detail, ARINC 743 Footprint Antenna, Skin Thickness 0.049" to 0.051" Figure 6-20. Skin Cutout Detail, ARINC 743 Footprint Antenna, Skin Thickness 0.051" to 0.063" Page 6-22 G3X Installation Manual – Antennas Revision E 190-01115-01...
• Page 73 Figure 6-21. Doubler Installation, ARINC 743 Footprint Antenna, Skin Thickness 0.032" to 0.049" Figure 6-22. Doubler Installation, ARINC 743 Footprint Antenna, Skin Thickness 0.049" to 0.051" G3X Installation Manual – Antennas Page 6-23 190-01115-01 Revision E...
• Page 74 Figure 6-23. Doubler Installation, ARINC 743 Footprint, Skin Thickness 0.051" to 0.063" Figure 6-24. Installation of ARINC 743 Footprint Antenna Page 6-24 G3X Installation Manual – Antennas Revision E 190-01115-01...

Page 75: Non-Structural Mount Installation

• Page 76 Figure 6-27 shows the non-structural mounting of the antenna under the glareshield, with the bracket assembly shown in Figure 6-26. Figure 6-26. Example Bracket Antenna Mounting Under Glareshield Page 6-26 G3X Installation Manual – Antennas Revision E 190-01115-01...
• Page 77 Figure 6-27. Example Non-structural Antenna Mounting Under Glareshield G3X Installation Manual – Antennas Page 6-27 190-01115-01 Revision E...
• Page 78 Teardrop or the ARINC 743 antenna. Figure 6-28. Example Teardrop Antenna Installation In Airframe Under Fabric Skin Figure 6-29. Example ARINC 743 Footprint In Airframe Under Fabric Skin Page 6-28 G3X Installation Manual – Antennas Revision E 190-01115-01...
• Page 79 (Section 6.6.1) antenna is used, with the antenna support bracket as the mounting surface. Follow the applicable gasketing and sealant instructions in Section 6.4.2 (Teardrop style) or Section 6.5.2 (ARINC 743 style). Figure 6-30. Example Non-structural Antenna Mounting On Airframe G3X Installation Manual – Antennas Page 6-29 190-01115-01 Revision E...
• Page 80 0.75 the tube structure (Figure 6-31, top) 1.00 1.25 0.625 Top of antenna between the center and 0.75 bottom of the tube structure 1.00 11.5 (Figure 6-31, bottom) 1.25 14.3 Page 6-30 G3X Installation Manual – Antennas Revision E 190-01115-01...

Page 81: Software, Configuration, Databases, And Xm Activation

Page 82: software loading procedure.

• Page 83 Press the UPDATE SW softkey to initialize a GSU software update. 3. After pressing the UPDATE SW softkey a confirmation will be requested. Press the ENT Key to begin updating the GSU software. G3X Installation Manual – Software, Configuration, Databases, and XM Activation Page 7-3 190-01115-01...
• Page 84 6. An unsuccessful update is indicated by an UPDATE FAILED message. Attempt the load again, or reload GDU software and then attempt to load the GSU software again. Page 7-4 G3X Installation Manual – Software, Configuration, Databases, and XM Activation Revision E 190-01115-01...

Page 85: Configuration Mode

Page 86: main configuration page, page 87: acft configuration page.

• Page 88 Then press the ENT Key or use the FMS Joystick to select the next item. Press the FMS Joystick to move the cursor to the page selection menu when finished. Page 7-8 G3X Installation Manual – Software, Configuration, Databases, and XM Activation Revision E 190-01115-01...
• Page 89 4. To edit or delete a station, highlight the desired station, then press the edit or delete softkey. 5. Press the FMS Joystick to move the cursor to the page selection menu when finished. G3X Installation Manual – Software, Configuration, Databases, and XM Activation Page 7-9...

Page 90: Units Configuration Page

• Page 91 Then press the ENT Key or use the FMS Joystick to select the next item. Press the FMS Joystick to move the cursor to the page selection menu when finished. G3X Installation Manual – Software, Configuration, Databases, and XM Activation Page 7-11...
• Page 92 Input Type–Sets the aircraft lighting bus voltage for either 12 or 24V input to match the aircraft lighting bus voltage. Time Constant–Adjusts the speed (in seconds), that the brightness level responds to changes in the input voltage level. Page 7-12 G3X Installation Manual – Software, Configuration, Databases, and XM Activation Revision E 190-01115-01...
• Page 93 PFD Attitude Symbol–Affects the appearance of the airplane symbol on the PFD attitude display. Options are Default, Alternate 1, and Alternate 2. Default Symbol Alternate 1 Symbol Alternate 2 Symbol G3X Installation Manual – Software, Configuration, Databases, and XM Activation Page 7-13 190-01115-01 Revision E...

Page 94: Sound Configuration Page

Page 95: comm configuration page.

• Page 96 GPBWC, GPVTG, GPXTE, GPRTE, GPWPL, GPAPB, PGRME, PGRMH, PGRMM, PGRMZ Aviation In - The proprietary format used for input to the G3X (baud rate of 9600) from an FAA certified Garmin panel mount unit. Allows the G3X to display a Go To or route selected on the panel mount unit, which eliminates the need to enter the destination on both units.
• Page 97 • Highlight the ‘GPS1’, ‘GPS2’, etc. fields on the Main Configuration page to verify which RS-232 and ARINC 429 inputs the G3X system is currently using for NAV 1 and NAV 2. GSU ARINC 429 Configuration options The configuration options for the 2 output and 4 input GSU ARINC 429 channels are detailed in this section.
• Page 98 377 Equipment ID ARINC 429 Inputs: Garmin GPS – Receives GPS labels from a 4XX/5XX series unit. A second selection is used to determine if the GPS input is from NAV 1 or NAV 2. Garmin VOR/ILS – Receives VOR/ILS labels from a 4XX/5XX series unit. A second selection is used to determine if the GPS input is from NAV 1 or NAV 2.
• Page 99 These files can be opened in Excel, or imported into Google Earth for viewing using the Garmin Flight Log Conversion tool. The tool and instructions needed to import the files into Google Earth are available from the G3X Product Page found on the Garmin website www.garmin.com.

Page 100: Garmin Database Updates

Page 101: available databases, page 102: aopa airport directory, page 103: xm activation instructions (gdu 375 only), page 104: checklist editor, page 105: engine/airframe sensor installation and configuration.

• Page 106 Position Sensor slide potentiometer (0-5 KΩ variable resistor) *Items with a Garmin part number may be included in a G3X Sensor Kit (Section 8.2.1), and are available individually from Garmin Dealers **Two sensors required for differential fuel flow ***UMA temperature sensors without the “R” designation are not compatible with the G3X system Page 8-2 G3X Installation Manual –...

Page 107: Engine Sensor Installation

• Page 108 Table 8-3. Contents of G3X Sensor Kit, 6 Cylinder Lycoming/Continental (K00-00513-00) Item Garmin P/N Quantity Fuel Flow Transducer, EI FT-60 494-10001-00 Oil Pressure Transducer, Powered, 150 psi, Gage, 494-30004-00 w/connector, Kavlico P4055-150G-E4A Manifold Pressure Transducer, Powered, 30 psi, Absolute, 494-30004-01...
• Page 109 Figure 8-2. CHT Probe Package Figure 8-3. CHT Probe Well G3X Installation Manual – Engine Sensor Installation and Configuration Page 8-5 190-01115-01 Revision E...
• Page 110 8.2.3.1 Lycoming, Continental, Jabiru, and Rotax Engine Installation General Installation Guidance – To maintain G3X Engine Indicating System (EIS) measurement accuracy, thermocouple (TC) wire must be connected directly to the inputs of the GSU 73. If the supplied sensor wires are not long enough to connect directly to the GSU 73, then Type K TC extension wire must be used.
• Page 111 See Figure 8-7 for an example of an installed EGT probe. Figure 8-5. EGT Package G3X Installation Manual – Engine Sensor Installation and Configuration Page 8-7 190-01115-01 Revision E...
• Page 112 Figure 8-6. Exhaust Pipe Drilled Figure 8-7. Installed EGT Probe Orientation Page 8-8 G3X Installation Manual – Engine Sensor Installation and Configuration Revision E 190-01115-01...
• Page 113 5. Safety-wire the probe to the engine case as appropriate. 6. Connect the supplied connector to the appropriate inputs on the GSU 73 as referenced in the G3X interconnects in Appendix H. Secure the connector and wire assembly to an appropriate location in the engine compartment to provide strain relief.
• Page 114 Sensor Interface Drawings in Appendices H, I, and J. Secure the connector and wire assembly to an appropriate location in the engine compartment to provide strain relief. Page 8-10 G3X Installation Manual – Engine Sensor Installation and Configuration Revision E 190-01115-01...
• Page 115 Jabiru Alternator - Direct connection to alternator output Rotax Trigger Coil RPM Sensor - This pressure sensor is applicable to Rotax engines. Refer to Rotax Installation Instructions for complete installation details. G3X Installation Manual – Engine Sensor Installation and Configuration Page 8-11 190-01115-01...
• Page 116 (Figure 8-14). 4. Connect the supplied connector to the appropriate inputs on the GSU 73 as referenced in the G3X interconnects in Appendix H. Secure the connector and wire assembly to an appropriate location in the engine compartment to provide strain relief.
• Page 117 3. Install the sensor into the port (Figure 8-16). The sensor should be installed finger tight plus 1/6 turn. Do not over-tighten. 4. Connect the supplied connector to the appropriate inputs on the GSU 73 as referenced in the G3X interconnects in Appendix H. Secure the connector and wire assembly to an appropriate location in the engine compartment to provide strain relief.
• Page 118 Sensor Description – Type K grounded thermocouple probe with screw-in type adapter. This type of sensor is applicable to all turbocharged engines. General Installation Guidance – To maintain G3X Engine Indicating System (EIS) measurement accuracy, thermocouple (TC) wire must be connected directly to the inputs of the GSU 73. If the supplied sensor wires are not long enough to connect directly to the GSU 73, then Type K TC extension wire must be used.
• Page 119 GSU 73. Connect the two sense wires (attached to the #8 terminals) to the appropriate inputs on the GSU 73 as referenced in the G3X interconnects in Appendices G, H, and I . If the ammeter readings are shown with the opposite polarity, check to see if the sense wire connections are reversed.

Page 120: Fuel Flow

• Page 121 The Floscan 201B-6 (201-030-000) fuel flow sensor ranges from 28,000 to 31,000 pulses/gallon. The G3X default K factor for the 201B-6 is set to 29,500 pulses/gallon. Some Floscan fuel flow sensors come with a tag that lists the K factor number measured during unit calibration (see Figure 8-16).
• Page 122 2. Install a very small amount of thread lubricant on the probe threads and insert into the carburetor (Figure 8-21). 3. Connect the supplied connector to the appropriate inputs of the GSU 73 as referenced in the G3X interconnects in Appendices H and I. Secure the connector and wire assembly to an appropriate location in the engine compartment to provide strain relief.

Page 123: Engine/Airframe Input Configuration

• Page 124 3. Press the Save softkey to store settings or press the Cancel softkey to cancel changes and return to the Engine Configuration Page. 4. Press the FMS Joystick to move the cursor to the page selection menu when finished. Page 8-20 G3X Installation Manual – Engine Sensor Installation and Configuration Revision E 190-01115-01...
• Page 125 Cyan Line Green Line Yellow Line Red Line Gauge Display Range – The Gauge Display Range allows for setting the minimum and maximum values of each gauge. G3X Installation Manual – Engine Sensor Installation and Configuration Page 8-21 190-01115-01 Revision E...
• Page 126 "VOLTS 1" and "VOLTS 2”. If there is not enough room to display both related gauges then neither gauge will be displayed in the EIS display (but will be displayed on the MFD’s Engine Page). Page 8-22 G3X Installation Manual – Engine Sensor Installation and Configuration Revision E 190-01115-01...
• Page 127 Lean Assist – A Lean Assist enable/disable field appears when editing an EGT or TIT input. Selecting Disable prevents the LEAN softkey from appearing on the ENG page. Lean Assist should be disabled for engines that do not have a pilot-controllable fuel/air mixture. G3X Installation Manual – Engine Sensor Installation and Configuration Page 8-23 190-01115-01...
• Page 128 Fuel Pressure Input Configuration – Select None, Kavlico P4055-15G (0-15 PSI), Kavlico P4055-50G (0-50 PSI), UMA N1EU35G-CS (0-35 PSI), or UMA N1EU70G-CS (0-70 PSI) as applicable to the aircraft’s engine. Page 8-24 G3X Installation Manual – Engine Sensor Installation and Configuration Revision E 190-01115-01...
• Page 129 Cap (capacitive) Fuel Inputs described in the following pages of this section. Resistive and/or Capacitive Inputs may be configured interchangeably for the above listed Groups 1-4. G3X Installation Manual – Engine Sensor Installation and Configuration Page 8-25...
• Page 130 Fuel 3 and 4 – Settings include Aux Fuel 1 & 2 inputs for resistive fuel sensors, which require calibration (Section 8.3.3). See drawings in Appendix G for details on adding resistors required this configuration. Page 8-26 G3X Installation Manual – Engine Sensor Installation and Configuration Revision E 190-01115-01...
• Page 131 Volts 1 and Volts 2 Inputs – Choices for Volts 1 configuration are None, Bus 1 Volts, and Main Bus Volts. Choices for Volts 2 configuration are None, Bus 2 Volts, and Essential Bus Volts. G3X Installation Manual – Engine Sensor Installation and Configuration Page 8-27...
• Page 132 Fuel 1 Input or Fuel 2 Input selection may delete the calibration data. Resistive and/or Capacitive Inputs may be configured interchangeably for the above listed Groups 1-4. Page 8-28 G3X Installation Manual – Engine Sensor Installation and Configuration Revision E 190-01115-01...
• Page 133 Engine Power – Configurable for Lycoming and Continental engines only. Select engine type (also normally-aspirated or turbocharged) from the pull-down list. Engine power requires data from RPM, manifold pressure, and fuel flow. G3X Installation Manual – Engine Sensor Installation and Configuration Page 8-29 190-01115-01...
• Page 134 The standard value of 2300 RPM is used as a default setting for 1 hour of engine time (i.e. 1 hour of engine operation at 2300 RPM equals 1 hour of engine time). This value can be changed on the Engine Time Configuration Page (shown below). Page 8-30 G3X Installation Manual – Engine Sensor Installation and Configuration Revision E 190-01115-01...
• Page 135 Records Total Time when aircraft is airborne as determined by GPS data and the indicated airspeed Records Total Time when engine RPM is greater than 100 G3X Installation Manual – Engine Sensor Installation and Configuration Page 8-31 190-01115-01 Revision E...
• Page 136 The greater number of calibration points that are used (maximum of 50 points), the more accurate the calibration will be. A yellow line on the graph indicates potentially incorrect/invalid info. Page 8-32 G3X Installation Manual – Engine Sensor Installation and Configuration Revision E 190-01115-01...
• Page 137 Write Calibration File – Stores fuel quantity calibration data to a file on the SD card. Calibration data is saved to the /Garmin/cal/ directory on the card. This data storage must be repeated for each calibrated tank (if backup is desired).
• Page 138 Factor must generally be adjusted up or down to increase the accuracy of the fuel flow calibration. If the fuel usage reported by the G3X differs from the actual fuel usage, as measured at the fuel pump (or other trusted method of measurement), use the following formula to calculate a corrected K-Factor, which can then be used to calibrate the fuel flow.
• Page 139 To delete a calibration value, highlight the desired data in the list, and press the CLR Key. Then highlight Yes on the pop-up window, and press the ENT Key, the calibration data is removed. G3X Installation Manual – Engine Sensor Installation and Configuration Page 8-35...
• Page 140 The measured current is first multiplied by the scale factor, then the offset value is added. If the resulting current value is less than the deadband value, the displayed current will be zero. Page 8-36 G3X Installation Manual – Engine Sensor Installation and Configuration Revision E 190-01115-01...

Page 141: Post-Installation Checkout And Calibration Procedures

Page 142: recommended test equipment.

• Page 143 1. Power on unit and use the FMS Joystick to select the XM Page. 2. Verify that the XM receiver is functioning correctly as indicated by the green signal strength bars. See Section 7.5 for XM Activation Instructions if needed. G3X Installation Manual – Post Installation Checkout and Calibration Procedures Page 9-3 190-01115-01...

Page 144: Gsu 73/Gmu 44 Post-Installation Calibration Procedures

• Page 145 The addition, removal, or modification of components that are ferrous, or otherwise magnetic, within 10.0 feet of the GMU 44 magnetometer location after the magnetometer interference test or magnetometer calibration procedure were completed requires a repeat of both procedures. G3X Installation Manual – Post Installation Checkout and Calibration Procedures Page 9-5 190-01115-01...
• Page 146 4. Use the FMS Joystick to select AHRS ORIENTATION (if not already selected). 5. Use the FMS Joystick to highlight the Calibrate button at the bottom of the display, press the ENT Key to begin the calibration. Page 9-6 G3X Installation Manual – Post Installation Checkout and Calibration Procedures Revision E 190-01115-01...
• Page 147 7. After a few minutes the calibration will finish and a Done button will appear at the bottom of the display, ensure that a CALIBRATION SUCCESSFUL message appears at the bottom of the display, press the ENT Key to return to the GSU Status Page. G3X Installation Manual – Post Installation Checkout and Calibration Procedures Page 9-7 190-01115-01...
• Page 148 3. Unlock the GSU Page by pressing softkeys 2, 3, 4 in order (if needed). 4. Ensure that all the required status boxes are checked (Tables 9-2 and 9-3). Page 9-8 G3X Installation Manual – Post Installation Checkout and Calibration Procedures Revision E 190-01115-01...
• Page 149 7. Ensure that the aircraft has been properly leveled per the on-screen instructions. 8. Use the FMS Joystick to highlight the Calibrate button at the bottom of the display, press the ENT Key to begin the calibration. G3X Installation Manual – Post Installation Checkout and Calibration Procedures Page 9-9 190-01115-01...
• Page 150 CALIBRATION SUCCESSFUL message appears at the bottom of the display, press the ENT Key to return to the GSU Status Page. The magnetometer calibration (Calibration Procedure D) must be completed after each pitch/roll offset calibration. Page 9-10 G3X Installation Manual – Post Installation Checkout and Calibration Procedures Revision E 190-01115-01...
• Page 151 NOTE Garmin recommends this test be performed at least once every 12 months. 1. Enter configuration mode by holding down the left-hand softkey while powering on the GDU 37X (if needed).
• Page 152 6. Use the FMS Joystick to highlight the Calibrate button, press the ENT Key. 7. Ensure that the aircraft has been properly prepared per the on-screen instructions. See Table 9-4 for a sample test sequence. Page 9-12 G3X Installation Manual – Post Installation Checkout and Calibration Procedures Revision E 190-01115-01...
• Page 153 NOTE It is important that all actions are carried out in the order and at the precise elapsed time as specified in the prepared test sequence. G3X Installation Manual – Post Installation Checkout and Calibration Procedures Page 9-13 190-01115-01 Revision E...
• Page 154 Aileron full left 0:30 Aileron level 0:40 Elevator up 0:50 Elevator down 1:00 Elevator level 1:20 Rudder left 1:40 Rudder right 1:50 Rudder center 2:00 Flaps down Page 9-14 G3X Installation Manual – Post Installation Checkout and Calibration Procedures Revision E 190-01115-01...
• Page 155 1) New equipment is installed in close proximity to the GMU 44 magnetometer. 2) An existing or new electronic device has become grounded through the aircraft structure instead of via the proper ground wire in a twisted shielded pair. G3X Installation Manual – Post Installation Checkout and Calibration Procedures Page 9-15 190-01115-01...
• Page 156 (west) of the North/South axis to allow turning clockwise around the site as indicated in Figure 9-3. Figure 9-3 – Aircraft Alignment Page 9-16 G3X Installation Manual – Post Installation Checkout and Calibration Procedures Revision E 190-01115-01...
• Page 157 5. On the GSU Status Page, use the FMS Joystick to select MAGNETOMER. 6. Use the FMS Joystick to highlight the Calibrate button, press the ENT Key. G3X Installation Manual – Post Installation Checkout and Calibration Procedures Page 9-17 190-01115-01...
• Page 158 30° (±5°) turn increments of the aircraft by using the compass rose radials. Dwelling at these 30° increments for the time recommended by the PFD should result in a successful calibration. Page 9-18 G3X Installation Manual – Post Installation Checkout and Calibration Procedures Revision E 190-01115-01...
• Page 159 12. When the calibration is finished, a Done button will appear at the bottom of the display, ensure that a CALIBRATION SUCCESSFUL message appears at the bottom of the display, press the ENT Key to return to the GSU Status Page. G3X Installation Manual – Post Installation Checkout and Calibration Procedures Page 9-19 190-01115-01...
• Page 160 3. Unlock the GSU Page by pressing softkeys 2, 3, 4 in order (if needed). 4. Ensure that all the required status boxes are checked (Tables 9-2 and 9-3). 5. Use the FMS Joystick to select ENGINE RUN-UP TEST. Page 9-20 G3X Installation Manual – Post Installation Checkout and Calibration Procedures Revision E 190-01115-01...
• Page 161 9. The PFD display instructs the operator to gradually increase power from idle to full throttle and back to idle over the course of a couple of minutes. G3X Installation Manual – Post Installation Checkout and Calibration Procedures Page 9-21...
• Page 162 (See Sections 4 and 5 for applicable mounting requirements and instructions). b) Vibration or motion of GSU 73 and/or GMU 44 caused by neighboring equipment and/or supports. Page 9-22 G3X Installation Manual – Post Installation Checkout and Calibration Procedures Revision E 190-01115-01...
• Page 163 ENGINE RUN-UP TEST PASSED message appears at the bottom of the display, press the ENT Key to return to the GSU Status Page. G3X Installation Manual – Post Installation Checkout and Calibration Procedures Page 9-23...
• Page 164 4. On the GSU Status Page, use the FMS Joystick to select HEADING OFFSET. 5. Ensure that all the required status boxes are checked (Tables 9-2 and 9-3). Page 9-24 G3X Installation Manual – Post Installation Checkout and Calibration Procedures Revision E 190-01115-01...
• Page 165 Maneuver the aircraft with the longitudinal axis aligned with the desired heading line of the compass rose. 10. Repeat the preceding steps 6, 7, 8, and 9 until a Calibration OK message is displayed. G3X Installation Manual – Post Installation Checkout and Calibration Procedures Page 9-25 190-01115-01...
• Page 166 Magnetometer Calibration Procedure. A G3X-equipped airplane can be used to evaluate a candidate site for magnetic disturbances and determine whether it is a suitable location to perform the magnetometer calibration procedure. The magnetometer calibration procedure itself contains the logic to simultaneously survey the location for magnetic cleanliness while it is computing the magnetometer calibration parameters.
• Page 167 A site that is used repeatedly to perform the Magnetometer Calibration Procedure should be re-evaluated every 12 months, and after any significant construction or placement of magnetic objects (above or below ground) within 50 meters of the location. G3X Installation Manual – Post Installation Checkout and Calibration Procedures Page 9-27 190-01115-01...

Page 168: External Interface Configuration (Garmin Units Only)

• Page 169 4XX Main VOR/LOC/GS 429 Config Page 5XX Main VOR/LOC/GS 429 Config Page NOTE Each output channel can be used to drive up to three RS-232 devices. G3X Installation Manual – Post Installation Checkout and Calibration Procedures Page 9-29 190-01115-01 Revision E...
• Page 170 4. Press CRSR key to accept the changes, changes are complete. NOTE Configuration changes will not be stored until completing Step 4. 5. Turn unit off and then back on to return to normal operation. Page 9-30 G3X Installation Manual – Post Installation Checkout and Calibration Procedures Revision E 190-01115-01...

Page 171: Troubleshooting

Page 172: gdu 37x, page 173: air data troubleshooting, page 174: engine indication troubleshooting, page 175: ahrs troubleshooting.

• Page 176 This logic is applied regardless of magnetic anomaly detection. 3. The GDU may display Red-X on the heading if the GSU 73 does not have GPS information, or if it senses a magnetic anomaly. Page 10-6 G3X Installation Manual –Troubleshooting Revision E 190-01115-01...
• Page 177 (Reversionary or Split-Screen PFD) Prior to troubleshooting an Attitude Failure, gather answers to the following questions. This information may be helpful to the installer/pilot, the G3X Dealer, or to Garmin Aviation Product Support in troubleshooting the failure. 1. What specifically was the nature of the failure? Was it a Red-X of only heading, only pitch/roll, or both? 2.

Page 178: Post Installation Calibration Procedures

Page 179: gsu 73 data logging.

• Page 180 6. Click on the Stop button to end the data recording session. Figure 10-9 – Data Logger, Recording Screen Page 10-10 G3X Installation Manual –Troubleshooting Revision E 190-01115-01...
• Page 181 Figure 10-10 – Data Logger, Connection Screen 10.7.3 Uploading the Data File To upload a data file created with the GSU 73 Data Logging Tool, return to the G3X product page (on the Garmin website www.garmin.com) and select the Data Log Upload Form.
• Page 182 This page intentionally left blank Page 10-12 G3X Installation Manual –Troubleshooting Revision E 190-01115-01...

Page 183: Return To Service Information

• Page 184 (Section 7.4.1) is required. If the correct software version is not installed, load the GMU 44 software contained in the G3X system software which is loaded to the displays (Section 7.2). Following a successful magnetometer calibration, and software verification the Return to Service Procedure is complete.

Page 185: Appendix A Pinouts

• Page 186 AIRCRAFT POWER 2 is for connecting to an alternate power source, such as on aircraft with two electrical buses. Pin Name Connector AIRCRAFT POWER 1 P3701 AIRCRAFT POWER 2 P3701 POWER GROUND P3701 POWER GROUND P3701 Page A-2 G3X Installation Manual – Pinouts Revision E 190-01115-01...
• Page 187 ISO 11898. CAN BUS TERMINATION should be connected to CAN BUS LO for the GDU that is located at the end of the bus (farthest from the GSU 73). Pin Name Connector CAN BUS HI P3701 CAN BUS LO P3701 CAN BUS TERMINATION P3701 G3X Installation Manual – Pinouts Page A-3 190-01115-01 Revision E...
• Page 188 P3701 The left and right common pins (pins 2 and 20) may be tied together or only one may be used. It is not necessary to use both common pins. Page A-4 G3X Installation Manual – Pinouts Revision E 190-01115-01...
• Page 189 P441 POWER GROUND, GMU 44 P441 A.2.3 Serial Data A.2.3.1 RS-232 Pin Name Connector RS-232 IN P441 A.2.3.2 RS-485 Pin Name Connector RS-485 OUT A P441 RS-485 OUT B P441 G3X Installation Manual – Pinouts Page A-5 190-01115-01 Revision E...

Page 190: Gsu 73

• Page 191 SIGNAL GROUND SPARE SPARE SPARE AIRCRAFT POWER 1 SPARE AIRCRAFT POWER 2 SPARE SPARE SPARE SIGNAL GROUND SIGNAL GROUND SPARE SPARE SPARE SIGNAL GROUND POWER GROUND SIGNAL GROUND POWER GROUND SPARE G3X Installation Manual – Pinouts Page A-7 190-01115-01 Revision E...
• Page 192 EGT 6/MISC PRESS HI VOLTS 2 HI CHT 6 HI OIL TEMP HI OAT PROBE IN LO CAP FUEL 1 SIGNAL GROUND CAP FUEL 2/FUEL FLOW 2 CONFIG MODULE DATA *Indicates Active Low Page A-8 G3X Installation Manual – Pinouts Revision E 190-01115-01...
• Page 193 CHT 5 HI TRANSDUCER POWER OUT LO (GROUND) +5 VDC TRANSDUCER POWER OUT FUEL SENSOR PULL-UP 2 (FUEL 2) FUEL SENSOR PULL-UP 1 (FUEL 1) CONFIG MODULE GROUND *Indicates Active Low G3X Installation Manual – Pinouts Page A-9 190-01115-01 Revision E...
• Page 194 P731 MAGNETOMETER POWER OUT P731 MAGNETOMETER GROUND A.3.4 GSU System ID Program Pins 4 & 5 must be left open (floating) for proper G3X configuration. Connector Pin Name P731 GSU SYSTEM ID PROGRAM* 1 P731 GSU SYSTEM ID PROGRAM* 2...
• Page 195 (always on by default). Connector Pin Name P731 MAGNETOMETER RS-232 OUT P731 RS-232 IN 2 (RESERVED) P731 RS-232 OUT 2 (RESERVED) P731 RS-232 IN 3 (RESERVED) P731 RS-232 OUT 3 (GPS/ALT ENCODER) G3X Installation Manual – Pinouts Page A-11 190-01115-01 Revision E...
• Page 196 High: 8 VDC < Vin < 36 VDC, OR Rin> 100k ohms (inactive) Connector Pin Name P731 DISCRETE IN* 1 P731 DISCRETE IN* 2 P731 DISCRETE IN* 3 P731 DISCRETE IN* 4 *Indicates Active Low Page A-12 G3X Installation Manual – Pinouts Revision E 190-01115-01...
• Page 197 CHT 5 LO P732 CHT 6 HI P732 CHT 6 LO P732 EGT 1 HI P732 EGT 1 LO P732 EGT 2 HI P732 EGT 2 LO P732 EGT 3 HI G3X Installation Manual – Pinouts Page A-13 190-01115-01 Revision E...
• Page 198 POS 4 / GP 4 / FUEL 4 LO P732 SHUNT 1 HI P732 SHUNT 1 LO P732 SHUNT 2 HI P732 SHUNT 2 LO P732 THERMOCOUPLE REF IN HI P732 THERMOCOUPLE REF IN LO Page A-14 G3X Installation Manual – Pinouts Revision E 190-01115-01...
• Page 199 4/FUEL 4 inputs, connect the high side of the input to +10V power through a 1 kΩ resistor, as shown in Appendix G. Connector Pin Name P732 FUEL SENSOR PULL-UP 2 (FUEL 2) P732 FUEL SENSOR PULL-UP 1 (FUEL 1) G3X Installation Manual – Pinouts Page A-15 190-01115-01 Revision E...
• Page 200 This page intentionally left blank Page A-16 G3X Installation Manual – Pinouts Revision E 190-01115-01...

Page 201: Appendix B Connector Installation Instructions

• Page 202 Figure B-2. Jackscrew Backshell Thermocouple Installation Page B-2 G3X Installation Manual – Connector Installation Instructions Revision E 190-01115-01...

Page 203: Jackscrew Configuration Module Installation Into A Jackscrew Backshell

• Page 204 (item 6) as the module (item 1)—as shown in drawing. 6. Attach cover (item 7) to backshell (item 6) using screws (item 8). Page B-4 G3X Installation Manual – Connector Installation Instructions Revision E 190-01115-01...
• Page 205 Figure B-4. Jackscrew Backshell Installation G3X Installation Manual – Connector Installation Instructions Page B-5 190-01115-01 Revision E...

Page 206: Jackscrew Backshell Installation Instructions

• Page 207 NOTE In Figure B-5, “AR” denotes quantity “As Required” for the particular installation. Figure B-5. Shield Install onto a Jackscrew Backshell (78 pin example) G3X Installation Manual – Connector Installation Instructions Page B-7 190-01115-01 Revision E...
• Page 208 For the following steps please refer to the drawings showing the installation of a Jackscrew Backshell. 1. The appropriate number of Jackscrew Backshells will be included in the particular LRU connector kit. Figure B-6. Method A.1 for Shield Termination Table B-6. Shielded Cable Preparations for Garmin Connectors Number Float Float Window...
• Page 209 The number of individual strands in each braid bundle is not specified. (e.g. QQB575F36T062) NOTE Flat Braid as opposed to insulated wire is specified in order to allow continuing air worthiness by allowing for visual inspection of the conductor. G3X Installation Manual – Connector Installation Instructions Page B-9 190-01115-01 Revision E...
• Page 210 Wire must be visible in the inspection hole after crimping and the insulation must be 1/64 – 1/32 inches from the end of the contact as shown in Figure B-7. Figure B-7. Insulation/Contact Clearance Page B-10 G3X Installation Manual – Connector Installation Instructions Revision E 190-01115-01...
• Page 211 (item 13). Warning: Placing the grooved side of the clamp across the cable bundle may risk damage to wires. 13. Attach the cover (item 14) to the backshell (item 1) using the two screws (item 15). G3X Installation Manual – Connector Installation Instructions Page B-11 190-01115-01...
• Page 212 B-7) length of the jacket to expose the shield. Next trim the shield so that at most 0.35 inches remains extending beyond the insulating jacket. Fold this remaining shield back over the jacket. Page B-12 G3X Installation Manual – Connector Installation Instructions Revision E 190-01115-01...
• Page 213 Braid (item 4) to be attached. Teflon Heat Shrinkable Tubing: Reference the following MIL-Spec for general Teflon heat shrinkable tubing (M23053/5-X-Y) Figure B-9. Method B.1 (Quick Term) for Shield Termination G3X Installation Manual – Connector Installation Instructions Page B-13 190-01115-01 Revision E...
• Page 214 (Figure B-10). All other restrictions and instructions for the shield termination technique set forth for Method B.1 are still applicable. NOTE maximum length combined braids should approximately 4 inches. Figure B-10. Method B.2 (Daisy Chain-Quick Term) for Shield Termination Page B-14 G3X Installation Manual – Connector Installation Instructions Revision E 190-01115-01...
• Page 215 Terminate this end via the ring terminals with the other Flat Braid per Steps 8 and 11 pertaining to terminate, attach a Ring terminal, #8, to shield termination. If this ground strap is only wire insulated, 18-22 AWG (MS25036-149). G3X Installation Manual – Connector Installation Instructions Page B-15 190-01115-01 Revision E...
• Page 216 Raychem D-436-36/37/38 MIL Spec MIL-S-81824/1 This technique may be used with shield termination methods: A.1, A.2, B.1, B.2, C.1 and C.2. Figure B-12. D-Sub Spliced Signal Wire illustration Page B-16 G3X Installation Manual – Connector Installation Instructions Revision E 190-01115-01...

Page 217: Appendix C Airframe Specific Installation Guidance

Page 218: van's aircraft.

• Page 219 (screws, washers, and nuts). Figure C-2. RV-7/9 GMU 44 Mounting Bracket on the F714 Aft Deck G3X Installation Manual – Airframe Specific Installation Guidance Page C-3 190-01115-01 Revision E...

Page 220: Lancair Aircraft

• Page 221 2. Attach the GMU 44 to the Top Bracket Assembly (115-01052-00) using screws (211-60037-08) as shown in Figure C-5. Figure C-5. Lancair IV/IV-P GMU 44 Mounting Bracket G3X Installation Manual – Airframe Specific Installation Guidance Page C-5 190-01115-01 Revision E...
• Page 222 5. Refrain from installing any ferrous metals near the GMU 44, including the mounting screws and nut plates used to attach the wingtip. Stainless steel fasteners are recommended. Page C-6 G3X Installation Manual – Airframe Specific Installation Guidance Revision E 190-01115-01...
• Page 223 C.3.2 Lancair ES/ES-P C.3.2.1 GMU 44 Mounting Bracket The Lancair ES/ES-P uses the G3X generic GMU 44 mount. The mount is comprised of two sheet metal parts, a bottom bracket (Garmin part number 115-00939-00) and a top bracket (Garmin part number 115- 01017-00) that holds the GMU 44 mounting plate.
• Page 224 Figure C-8. GMU 44 Installation Rack (ES / ES-P) 5. Rivet the GMU 44 Installation Rack (115-00481-00) to the Top Bracket Assembly (115-01017-00) as shown in Figure C-9. Figure C-9. GMU 44 Installation Rack (ES/ES-P) Page C-8 G3X Installation Manual – Airframe Specific Installation Guidance Revision E 190-01115-01...
• Page 225 GMU 44 up (plus) from the mounting surface or down (minus) from the mounting surface. Figure C-11. Adjusting for Wing Dihedral G3X Installation Manual – Airframe Specific Installation Guidance Page C-9 190-01115-01...
• Page 226 8. Attach the GMU 44 to the GMU 44 Mounting Bracket as illustrated in Figure C-13 using brass screws. Figure C-13. Secure GMU 44 to the Mounting Bracket Assembly Page C-10 G3X Installation Manual – Airframe Specific Installation Guidance Revision E 190-01115-01...
• Page 227 13. Match drill the Magnetometer Bracket to the wing rib. 14. Apply epoxy resin to the flat side of the nutplate washers, see Figure C-17. Figure C-17. Nutplate Washers G3X Installation Manual – Airframe Specific Installation Guidance Page C-11 190-01115-01...
• Page 228 • The wing tip should also be attached with stainless steel hardware (nutplates and screws). • Never use a magnetic screwdriver to remove or install wingtip hardware. Page C-12 G3X Installation Manual – Airframe Specific Installation Guidance Revision E 190-01115-01...
• Page 229 Figure C-20. MAGNETOMETER SHELF (REF) MAGNETOMETER SHELF (REF) Figure C-20. View Looking AFT At Recommended Magnetometer Location G3X Installation Manual – Airframe Specific Installation Guidance Page C-13 190-01115-01 Revision E...
• Page 230 When aligning the shelf, ensure the shelf remains level to within 3° of the pitch and roll axes. FILL WITH EPOXY/FLOX MIXTURE Figure C-22. Fill Detail For Corner Radii And Magnetometer Shelf Page C-14 G3X Installation Manual – Airframe Specific Installation Guidance Revision E 190-01115-01...
• Page 231 Figure C-24. The alignment of the magnetometer is critical and needs to be within 0.5° of the aircraft’s forward direction. MAGNETOMETER SHELF ELEVATOR CONTROL TUBE Figure C-24. Alignment Of Magnetometer Cutout With Aircraft’s Forward Direction G3X Installation Manual – Airframe Specific Installation Guidance Page C-15 190-01115-01 Revision E...
• Page 232 GMU 44 Magnetometer unit installation. NOTE The GMU 44 Installation Rack must be set, drilled, and installed after the shelf has been mounted in the aircraft and cured. Page C-16 G3X Installation Manual – Airframe Specific Installation Guidance Revision E 190-01115-01...
• Page 233 115-00481-00 GMU 44 INSTALLATION RACK MAGNETOMETER SHELF (REF) 3X AN960C6 WASHERS 3X 6-32 STAINLESS NUTS (MS21083C06 OR EQUIVALENT) Figure C-27. Assembly Of GMU 44 Installation Rack To Magnetometer Shelf G3X Installation Manual – Airframe Specific Installation Guidance Page C-17 190-01115-01 Revision E...
• Page 234 8. Install the GMU 44 Magnetometer in the installation rack with the hardware provided as shown in Figure C-28. 211-60037-08 SCREW 6-32 x .25 BRASS (3X) GMU 44 MAGNETOMETER MAGNETOMETER SHELF (REF) Figure C-28. Installation Of GMU 44 Magnetometer Page C-18 G3X Installation Manual – Airframe Specific Installation Guidance Revision E 190-01115-01...

Page 235: Appendix D Outline And Installation Drawings

• Page 236 APPENDIX D OUTLINE & INSTALLATION DRAWINGS Figure D-1.2 GDU 37X Panel Cutout Drawing Page D-2 G3X Installation Manual – Outline & Installation Drawings Revision E 190-01115-01...
• Page 237 APPENDIX D OUTLINE AND INSTALLATION DRAWINGS Figure D-2.1 GMU 44 Mounting Rack G3X Installation Manual – Outline & Installation Drawings Page D-3 190-01115-01 Revision E...
• Page 238 APPENDIX D OUTLINE & INSTALLATION DRAWINGS Figure D-2.2 GMU 44 Top Mounted Installation Page D-4 G3X Installation Manual – Outline & Installation Drawings Revision E 190-01115-01...
• Page 239 APPENDIX D OUTLINE AND INSTALLATION DRAWINGS Figure D-2.3 GMU 44 Bottom Mounted Installation G3X Installation Manual – Outline & Installation Drawings Page D-5 190-01115-01 Revision E...
• Page 240 APPENDIX D OUTLINE & INSTALLATION DRAWINGS Figure D-2.4 GMU 44 Wiring Detail Page D-6 G3X Installation Manual – Outline & Installation Drawings Revision E 190-01115-01...
• Page 241 APPENDIX D OUTLINE AND INSTALLATION DRAWINGS Figure D-3.1 GSU 73 Outline Drawing G3X Installation Manual – Outline & Installation Drawings Page D-7 190-01115-01 Revision E...
• Page 242 APPENDIX D OUTLINE & INSTALLATION DRAWINGS Figure D-4.1 GTP 59 O.A.T. Probe Installation Drawing Page D-8 G3X Installation Manual – Outline & Installation Drawings Revision E 190-01115-01...
• Page 243 APPENDIX D OUTLINE AND INSTALLATION DRAWINGS Figure D-5.1 GA 55/55A Installation Drawing G3X Installation Manual – Outline & Installation Drawings Page D-9 190-01115-01 Revision E...
• Page 244 APPENDIX D OUTLINE & INSTALLATION DRAWINGS Figure D-5.2 GA 56 Installation Drawing Page D-10 G3X Installation Manual – Outline & Installation Drawings Revision E 190-01115-01...
• Page 245 APPENDIX D OUTLINE AND INSTALLATION DRAWINGS Figure D-5.3 GA 57X Installation Drawing G3X Installation Manual – Outline & Installation Drawings Page D-11 190-01115-01 Revision E...
• Page 246 APPENDIX D OUTLINE & INSTALLATION DRAWINGS This page intentionally left blank Page D-12 G3X Installation Manual – Outline & Installation Drawings Revision E 190-01115-01...

Page 247: Appendix E G3X Core Interconnect Drawings

• Page 248 APPENDIX E G3X CORE INTERCONNECT DRAWINGS Figure E-1.2 GDU 37X and GSU 73 Page E-2 G3X Installation Manual – G3X Core Interconnect Drawings Revision E 190-01115-01...
• Page 249 APPENDIX E G3X CORE INTERCONNECT DRAWINGS Figure E-1.3 14V Power and Antennas G3X Installation Manual – G3X Core Interconnect Drawings Page E-3 190-01115-01 Revision E...
• Page 250 APPENDIX E G3X CORE INTERCONNECT DRAWINGS This page intentionally left blank Page E-4 G3X Installation Manual – G3X Core Interconnect Drawings Revision E 190-01115-01...

Page 251: Appendix F: External Interface Drawings (Example Only

• Page 252 WAAS UNIT) OR "AVIATION IN" (IF CONNECTED TO A NON-WAAS UNIT) SET GSU ARINC 429 TX 1 FORMAT TO "EFIS/AIRDATA" AND "NAV 1" SET GSU ARINC 429 RX 1 FORMAT TO "GARMIN GPS" AND "NAV 1" SET GSU ARINC 429 RX 2 FORMAT TO "GARMIN VOR/ILS" AND "NAV 1"...
• Page 253 SET GSU ARINC 429 RX 2 FORMAT TO "GARMIN VOR/ILS" AND "NAV 1" FOR GNS #1 SET GSU ARINC 429 RX 3 FORMAT TO "GARMIN GPS" AND "NAV 2" FOR GNS #2 (IF APPLICABLE) SET GSU ARINC 429 RX 4 FORMAT TO "GARMIN VOR/ILS" AND "NAV 2" FOR GNS #2 IMPORTANT: GNS #1 AND #2 ARE DIFFERENTIATED IN THE G3X SYSTEM BY THE GDU 37X RS-232 PORT ASSIGNMENTS.
• Page 254 APPENDIX F EXTERNAL INTERFACE DRAWINGS (EXAMPLE ONLY) NOTE: THIS INTERFACE EXAMPLE DRAWING IS NOT SUFFICIENT FOR INSTALLATION OF A GTX 327, GTX 330, SL30, OR SL40 PRODUCT. CONTACT A LOCAL GARMIN AVIONICS DEALER FOR COMPLETE INSTALLATION INFORMATION. GSU 73 SEE NOTES 10 AND 11...
• Page 255 NOTE FOR INTEGRATED AUTOPILOT INSTALLATIONS: BEFORE ATTEMPTING TO CONTROL AUTOPILOT MODES ON THE G3X DISPLAY, OPERATION OF THE AUTOPILOT INDEPENDENT OF THE G3X SYSTEM (I.E. USING THE AUTOPILOT CONTROL HEAD) SHOULD BE CONDUCTED TO DETERMINE SUITABLE AUTOPILOT GAIN SETTINGS. Figure F-1.5 Auto Pilot Examples Page 1 of 2 G3X Installation Manual –...
• Page 256 NOTE FOR INTEGRATED AUTOPILOT INSTALLATIONS: BEFORE ATTEMPTING TO CONTROL AUTOPILOT MODES ON THE G3X DISPLAY, OPERATION OF THE AUTOPILOT INDEPENDENT OF THE G3X SYSTEM (I.E. USING THE AUTOPILOT CONTROL HEAD) SHOULD BE CONDUCTED TO DETERMINE SUITABLE AUTOPILOT GAIN SETTINGS. Figure F-1.5 Auto Pilot Examples Page 2 of 2 Page F-6 G3X Installation Manual –...

Page 257: Appendix G Sensor Wiring Examples

• Page 258 APPENDIX G SENSOR WIRING EXAMPLES Figure G-1.2 Flaps/Trim and UMA Pressure Transducer Examples Page G-2 G3X Installation Manual – Sensor Wiring Examples Revision E 190-01115-01...
• Page 259 +5V TRANSDUCER POWER EXCITATION CAP FUEL 2 / FUEL FLOW 2 OUT HI XDCR PWR OUT LO (GROUND) OUT LO/GROUND Figure G-1.3 Fuel Quantity and Fuel Flow Examples G3X Installation Manual – Sensor Wiring Examples Page G-3 190-01115-01 Revision E...
• Page 260 DISCRETE IN* 4 ACTIVE SEE NOTE 17 MASTER WARNING DISCRETE OUT* 1 TO POWER SUPPLY MASTER CAUTION DISCRETE OUT* 2 TO POWER SUPPLY Figure G-1.4 Electrical and Discrete Input/Output Examples Page G-4 G3X Installation Manual – Sensor Wiring Examples Revision E 190-01115-01...

Page 261: Appendix H Lycoming/Continental Sensor Wiring Examples

• Page 262 / ALTERNATOR B LEAD .0005 OHM SHUNT 1 LO BATTERY CONTACTOR / POWER DISTRIBUTION BUS Figure H-1.2 4/6 Cylinder Lycoming/Continental Sensor Wiring Examples, Page 1 of 2 Page H-2 G3X Installation Manual – 4/6 Cylinder Lycoming/Continental Sensor Wiring Examples Revision E 190-01115-01...
• Page 263 POS 5 / TEMP 1 OUT HI POS 5 / TEMP 1 OUT LO SIGNAL GROUND Figure H-1.2 4/6 Cylinder Lycoming/Continental Sensor Wiring Examples, Page 2 of 2 G3X Installation Manual – 4/6 Cylinder Lycoming/Continental Sensor Wiring Examples Page H-3 190-01115-01 Revision E...
• Page 264 APPENDIX H LYCOMING/CONTINENTAL SENSOR WIRING EXAMPLES This page intentionally left blank Page H-4 G3X Installation Manual – 4/6 Cylinder Lycoming/Continental Sensor Wiring Examples Revision E 190-01115-01...

Page 265: Appendix I Rotax Sensor Wiring Examples

• Page 266 / ALTERNATOR B LEAD VARIES W/ TYPE SHUNT 1 LO BATTERY CONTACTOR / POWER DISTRIBUTION BUS Figure I-1.1 Rotax 912 Sensor Wiring Examples, Page 2 of 2 Page I-2 G3X Installation Manual – Rotax Sensor Wiring Examples Revision E 190-01115-01...

Page 267: Appendix J Jabiru Sensor Wiring Examples

• Page 268 APPENDIX J JABIRU SENSOR WIRING EXAMPLES Figure J-1.1 Jabiru Sensor Wiring Examples, Page 2 of 2 Page J-2 G3X Installation Manual – Jabiru Sensor Wiring Examples Revision E 190-01115-01...

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Manuals and User Guides for Garmin G3X. We found 6 manuals for free downloads Installation manual, Owner's manual, Reference guide, User Guide, User guide

Garmin G3X is a multi-function display (MFD) that combines navigation, flight planning, hazard avoidance, and additional features to enhance situational awareness and safety during flight operations. Its advanced capabilities make it a valuable tool for pilots of all experience levels.

Key Features

• GPS navigation with waypoint, route, and procedure guidance
• Flight planning tools for creating and editing flight plans
• Terrain and obstacle avoidance features to enhance safety
• Traffic information to provide visual acquisition of nearby aircraft
• Weather information, including XM® Weather and NEXRAD data
• Easy-to-use interface with intuitive menus and touchscreen controls

Pages: 59 Garmin G3X Installation manual

Brand: Garmin Size: 4 MB

Languages: English

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G3X and GFC 500 configuration options

By PT20J April 3, 2021 in Avionics/Panel Discussion

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There are a lot of options when configuring the G3X/GFC 500. Many are only described in the Installation Manual which Garmin does not make generally available. You can get the Experimental Installation Manuals, but there are some differences between the experimental and certified versions.

So, the question for those who have installed these is: How did you discover and review all the options and communicate your preferences to your installer?

Also, I notice in the Experimental Installation Manual that the GFC 500 can be configured for CWS. Has anyone done that?

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Does the GFC500 have a decent set of yoke horn switches to go with it?

Like an improvement to the venerable BK switch block...

If you see a CWS button on their switch block... that would be a small hint...

PP thoughts only,

57 minutes ago, carusoam said: Does the GFC500 have a decent set of yoke horn switches to go with it? Like an improvement to the venerable BK switch block... If you see a CWS button on their switch block... that would be a small hint... PP thoughts only, -a- 

Interesting question. All the installation pictures I've seen use the old switches. Garmin must have something available for new installations, but I can't find it on their website (but then it could be me: Garmin's website is only slightly better than their manuals). My yoke switches work fine, but there is a crack in the plastic that needs to be glued. But it seems weird to buy a new autopilot and reuse 25+ year-old B-K switches.

How about it? Anyone got a yoke switch setup that came from Garmin?

45 minutes ago, PT20J said: Interesting question. All the installation pictures I've seen use the old switches. Garmin must have something available for new installations, but I can't find it on their website (but then it could be me: Garmin's website is only slightly better than their manuals). My yoke switches work fine, but there is a crack in the plastic that needs to be glued. But it seems weird to buy a new autopilot and reuse 25+ year-old B-K switches. How about it? Anyone got a yoke switch setup that came from Garmin? Skip

I think Cygnet (better known for Beech dual yokes) makes some of the hardware for Garmin, not sure about CWS though.  

In the install manual there are the following options for the trim switch.

1.  The switch provided by Garmin.  Inexpensive switch with thin lever (like a small toggle switch except with up and down functionality)

2.  Cygnet Switch - below.

3.  BK trim switch.

4.  STEC trim Switch.

CWS is not offered in the Certified product.  In this application it acts only as an autopilot disconnect switch when pressed.  In the experimental version, there is the ability to configure the function of the switch so that a momentary contact disconnects the autopilot and a push and hold acts as CWS.  It's wired to the same connectors on the servos, just configured different through software.

On 4/4/2021 at 10:59 PM, Warren said: In the install manual there are the following options for the trim switch. 1.  The switch provided by Garmin.  Inexpensive switch with thin lever (like a small toggle switch except with up and down functionality) 2.  Cygnet Switch - below. 3.  BK trim switch. 4.  STEC trim Switch.   CWS is not offered in the Certified product.  In this application it acts only as an autopilot disconnect switch when pressed.  In the experimental version, there is the ability to configure the function of the switch so that a momentary contact disconnects the autopilot and a push and hold acts as CWS.  It's wired to the same connectors on the servos, just configured different through software.

Bummer.  I like the CWS option in my kap150.  Lee

59 minutes ago, laytonl said: Bummer.  I like the CWS option in my kap150.  Lee

I thought CWS was a great idea when I got my S-Tec 55x but can only remember using it once or twice in the 20+ years I had it.  I don't miss it on the GFC-500.

1 hour ago, 201Mooniac said: I thought CWS was a great idea when I got my S-Tec 55x but can only remember using it once or twice in the 20+ years I had it.  I don't miss it on the GFC-500.

I liked it on my KFC 200 years ago because a single press would activate the FD and sync it to the current flight condition. But a flight director only serves two purposes: 1) to assist hand flying, and 2) to monitor visually what the autopilot is doing. Since modern doctrine is to fly most segments on autopilot there isn’t a lot of hand instrument flying going on and CWS seems less useful. 

When I installed mine in my F model, there isn't an option for CWS. The install kit is very nice but yes the trim switch included in the kit is less than impressive. It is a MS standard switch and just doesn't have a good feel. You might want to discuss that with your installed. I went ahead and installed it in mine since I don't have a lot of room with the vintage style yokes but I'd like to try and use a Cygnet style switch. 

If you have any questions on options or need any detail, feel free to send me a PM. 

On 4/3/2021 at 12:51 PM, PT20J said: So, the question for those who have installed these is: How did you discover and review all the options and communicate your preferences to your installer?

The original question stands/applies even to those that have a G3X with a GFC 500 installed, and are still learning all the possible configurations that were installed.

Since keeping the B-K switch setup appears to be the cleanest option and the plastic part that holds the switches sometimes breaks, I wonder if anyone has designed a 3D printed replacement?

On 4/4/2021 at 2:51 AM, PT20J said: There are a lot of options when configuring the G3X/GFC 500. Many are only described in the Installation Manual which Garmin does not make generally available. You can get the Experimental Installation Manuals, but there are some differences between the experimental and certified versions. So, the question for those who have installed these is: How did you discover and review all the options and communicate your preferences to your installer? Also, I notice in the Experimental Installation Manual that the GFC 500 can be configured for CWS. Has anyone done that? Skip  

The STC for your plane should have detailed installation drawings along with the specific system settings for your model (gain settings, ect...).  I've seen them for my plane but every installer should have it for your model.

58 minutes ago, Davidv said: The STC for your plane should have detailed installation drawings along with the specific system settings for your model (gain settings, ect...).  I've seen them for my plane but every installer should have it for your model.

Now that I've determined that CWS isn't an option for the GFC 500, I'm more interested in the G3X options. For instance, there are multiple ways the flight timer can be configured. It would be nice if I had a table of all the options and could agree as part of the planning how I want it configured and I was curious if anyone had done that.

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Garmin G3X Touch Installation Manual online

Table of Content

• Installation manual 1
• Record of revisions 2
• 01115 01 g3x installation manual rev u page i 3
• Current revision description 3
• Cautions are used to alert the individual that damage to equipment may result if the procedural step is not followed to the letter 4
• Definitions of warnings cautions and notes 4
• Notes are used to expand and explain the preceding step and provide further understanding of the reason for the particular operation 4
• Warnings are used to bring to the installer s immediate attention that not only damage to the equipment but personal injury may occur if the instruction is disregarded 4
• Limited warranty for g3x products 6
• Section 1 inventory of materials 1 7
• Section 2 installation preparation 1 7
• Section 3 gad 29 arinc 429 adapter installation 1 7
• Section 4 gap 26 pitot aoa probe installation 1 7
• Section 5 gdu 37x display unit installation 1 7
• Section 10 gmc 305 afcs mode controller installation 0 1 8
• Section 6 gdu 45x display unit installation 1 8
• Section 7 gdu 46x display unit installation 1 8
• Section 8 gea 24 eis interface installation 1 8
• Section 9 gi 260 aoa indicator installation 1 8
• Section 11 gmc 307 afcs mode controller installation 1 1 9
• Section 12 gmu 22 magnetometer installation 2 1 9
• Section 13 gps 20a waas gps position source installation 3 1 9
• Section 14 gsa 28 autopilot servo installation 4 1 9
• Section 15 gsu 25 25b ahrs air data sensor unit installation 5 1 9
• Section 16 gsu 73 sensor unit installation 6 1 9
• Section 17 gtp 59 temperature probe installation 7 1 10
• Section 18 gtr 20 vhf communications radio installation 8 1 10
• Section 19 gps xm antenna installation 9 1 10
• Section 20 engine airframe sensor installation 0 1 10
• Section 21 connector installation instructions 1 1 10
• Section 22 lru pinouts 2 1 10
• Section 23 g3x w gsu 25 and or gad 29 interconnect drawings 3 1 11
• Section 24 g3x w gsu 73 interconnect drawings 4 1 11
• Section 25 g3x w gtr 20 interconnect drawings 5 1 11
• Section 26 sensor wiring examples 6 1 11
• Section 27 lycoming continental sensor wiring examples 7 1 11
• Section 28 rotax sensor wiring examples 8 1 11
• Section 29 jabiru sensor wiring examples 9 1 11
• Appendix a airframe specific installation guidance a 1 12
• Section 30 gdu 37x configuration and post installation checkout 0 1 12
• Section 31 gdu 45x 46x configuration and post installation checkout 1 1 12
• Section 32 troubleshooting 2 1 12
• Section 33 maintenance 3 1 12
• Appendix b rs 232 text output format b 1 13
• Appendix c lru performance specifications licensing compliance c 1 13
• Inventory of materials 14
• Required garmin equipment 14
• The g3x lru kit w gsu 25 no eis table 1 1 is intended for customers who have previously purchased only a gdu 37x or 46x display this kit includes the lrus needed to complete a g3x system installation does not include connector installation kits listed in table 1 29 14
• Unpacking unit 14
• 01115 01 g3x installation manual inventory of materials rev u page 1 2 15
• Garmin lru line replaceable unit list for gdu 37x systems 15
• Table 1 2 contents of g3x w gsu 73 lru kit k10 00016 00 15
• Table 1 2 through table 1 9 list the available core g3x lrus for gdu 37x systems the g3x lru kit table 1 2 is for g3x installations using the gsu 73 the kits in table 1 3 through table 1 9 are for g3x installations using the gsu 25 25b each gdu 37x 010 00667 xx comes with all equipment needed for installation table 1 10 15
• Table 1 3 contents of gdu 370 single display kit no eis k10 00016 05 15
• Table 1 4 contents of gdu 370 single display kit w eis k10 00016 10 15
• 01115 01 g3x installation manual inventory of materials rev u page 1 3 16
• Table 1 5 contents of gdu 370 dual display kit k10 00016 20 16
• Table 1 6 contents of gdu 370 triple display kit k10 00016 30 16
• Table 1 7 contents of gdu 375 w sirius xm single display kit k10 00016 15 16
• 01115 01 g3x installation manual inventory of materials rev u page 1 4 17
• Each gdu 37x assembly 010 00667 xx listed in table 1 3 through table 1 9 includes the gdu and the items listed in table 1 1 17
• Table 1 10 contents of gdu 37x assembly 010 00667 xx 17
• Table 1 8 contents of gdu 370 375 w sirius xm dual display kit k10 00016 25 17
• Table 1 9 contents of gdu 370 370 375 w sirius xm triple display kit k10 00016 35 17
• 01115 01 g3x installation manual inventory of materials rev u page 1 5 18
• Garmin lru line replaceable unit list for gdu 45x systems 18
• Table 1 11 contents of single display gdu 450 system w out eis k10 00016 42 18
• Table 1 11 through table 1 19 list the available core g3x lrus for gdu 45x systems table 1 16 18
• Table 1 12 contents of single display gdu 455 system w sxm w out eis k10 00016 43 18
• Table 1 13 contents of single display gdu 450 system w eis k10 00016 47 18
• Table 1 18 and table 1 19 are mixed gdu 45x 46x systems a gdu 45x installation kit table 1 20 is required for each gdu 45x 010 01056 xx installed 18
• 01115 01 g3x installation manual inventory of materials rev u page 1 6 19
• Table 1 14 contents of single display gdu 455 system w eis w sxm k10 00016 52 19
• Table 1 15 contents of dual display gdu 450 system w eis k10 00016 57 19
• Table 1 16 contents of dual display gdu 460 450 system w eis w sxm k10 00016 58 19
• 01115 01 g3x installation manual inventory of materials rev u page 1 7 20
• Table 1 17 contents of dual display gdu 450 455 system w eis w sxm k10 00016 62 20
• Table 1 18 contents of dual display gdu 455 460 system w eis w sxm k10 00016 63 20
• Table 1 19 contents of dual display gdu 450 465 system w eis w sxm k10 00016 64 20
• 01115 01 g3x installation manual inventory of materials rev u page 1 8 21
• Table 1 20 contents of gdu 45x installation kit 010 12150 01 21
• 01115 01 g3x installation manual inventory of materials rev u page 1 9 22
• Garmin lru line replaceable unit list for gdu 46x systems 22
• Table 1 18 and table 1 19 are mixed gdu 45x 46x systems a gdu 46x installation kit table 1 27 is required for each gdu 46x 010 01057 xx installed 22
• Table 1 21 contents of single display gdu 460 system w out eis k10 00016 40 22
• Table 1 21 through table 1 26 list the available core g3x lrus for gdu 46x systems table 1 16 22
• Table 1 22 contents of single display gdu 465 system w sxm w out eis k10 00016 41 22
• Table 1 23 contents of single display gdu 460 system w eis k10 00016 45 22
• 01115 01 g3x installation manual inventory of materials rev u page 1 10 23
• Table 1 24 contents of single display gdu 465 system w eis w sxm k10 00016 50 23
• Table 1 25 contents of dual display gdu 460 system w eis k10 00016 55 23
• Table 1 26 contents of dual display gdu 460 465 system w eis w sxm k10 00016 60 23
• 01115 01 g3x installation manual inventory of materials rev u page 1 11 24
• Each item listed in table 1 28 contains its own parts list to verify that all parts are included 24
• Garmin lru installation kits 24
• Table 1 27 contents of gdu 46x installation kit 010 12150 00 24
• Table 1 28 contents of g3x w gsu 73 installation kit k10 00017 00 24
• The g3x w gsu 73 installation kit contains the items listed in table 1 28 which are required for the installation of the g3x 24
• The gdu 37x is not included in either the g3x w gsu 73 installation kit k10 00017 00 or the g3x w gsu 73 lru kit k10 00016 00 24
• 01115 01 g3x installation manual inventory of materials rev u page 1 12 25
• A garmin or non garmin gps antenna is required for a g3x installation a garmin or non garmin xm antenna is required for g3x installations using siriusxm weather see section 19 for required materials for antenna installation including mounting brackets doubler plates rivets hardware cables connectors and sealant 25
• Gps xm antenna s 25
• Table 1 29 lru connector installation kits 25
• 01115 01 g3x installation manual inventory of materials rev u page 1 13 26
• Optional garmin lrus 26
• Table 1 30 lists optional garmin lrus that can be installed with the g3x system if any of these lrus are to be used in this installation verify that all required installation materials such as connector kits have been acquired installation information for lrus not documented in this manual can be found in the installation manual for each respective lru 26
• Table 1 30 optional garmin lrus 26
• 01115 01 g3x installation manual inventory of materials rev u page 1 14 27
• Contact and crimp tools table 1 31 lists recommended crimp tools used to build the wiring harnesses for the g3x lrus other equivalent tooling may also be used 27
• Non garmin part numbers shown are not maintained by garmin and consequently are subject to change without notice 27
• Required non garmin equipment 27
• Table 1 31 pin contact and crimp tools part numbers 27
• Wiring cabling considerations the installer will provide all wiring and cabling unless otherwise noted use mil w 22759 16 or other approved wire awg 22 or larger wire for all connections unless otherwise specified the supplied standard pin contacts are compatible with up to awg 22 wire rg400 or rg142 coaxial cable with 50 nominal impedance and meeting applicable aviation regulations should be used for the installation 27
• Ahrs magnetometer installation considerations aviation checklist editor ace software flightlog conversion software gdu 37x cockpit display unit software gdu 45x cockpit display unit software gdu 46x cockpit display unit software gsu 73 data logger software gsu 73 field calibration tool panel cut out dxf file 29
• Garmin software and documents 29
• Optional 3rd party sensors lrus 29
• Optional garmin equipment non lru 29
• Optional non garmin equipment 29
• Installation preparation 30
• System overview 30
• 01115 01 g3x installation manual installation preparation rev u page 2 2 31
• A g3x system installation can use either gdu 37x or gdu 45x 46x displays but a g3x system installation cannot use gdu 37x and gdu 45x 46x displays 31
• Figure 2 1 g3x interconnect example gdu 37x 31
• Figure 2 1 illustrates an example block diagram of a g3x installation using gdu 37x lrus figure 2 2 illustrates an example block diagram of a g3x installation using gdu 45x 46x lrus the flexibility of the system allows the installer to determine the architecture that best fits each installation only one gdu 37x or gdu 45x 46x display is required but up to three may be used 31
• Refer to figure 2 1 and figure 2 2 to determine which of the optional lrus will be used in the installation and to determine the required interface connections 31
• System architecture 31
• 01115 01 g3x installation manual installation preparation rev u page 2 3 32
• Figure 2 2 g3x interconnect example gdu 45x 46x 32
• Please refer to the g3x touch pilot s guide 190 01754 00 for guidance in using connext bluetooth connections to garmin pilot device s 32
• 01115 01 g3x installation manual installation preparation rev u page 2 4 33
• Do not connect the gap 26 to 28 vdc 33
• Electrical considerations 33
• Gap 26 the 010 01074 00 version of the gap 26 does not require power as it does not have a heater the initial current vs temperature requirements for the 010 01074 10 and 010 01074 20 are listed in table 2 1 see 33
• Gdu 37x current draw must be multiplied by the number of installed gdu 37x units 33
• Power specifications all g3x lrus are capable of operating at either 14 or 28 vdc except the gap 26 010 01074 10 table 2 1 table 2 2 and table 2 3 list supply voltage and current draw for the g3x lrus use this information when determining power supply requirements all installed electrical appliances must be considered when determining total power requirements 33
• Section 4 for acceptable wiring configurations 33
• Table 2 1 gap 26 initial current draw vs probe temperature 10 20 units only 33
• Table 2 2 gdu 37x power requirements 33
• This section presents information required for planning the electrical layout of the g3x installation 33
• To avoid damage to the lrus take precautions to prevent electro static discharge esd when handling connectors and associated wiring esd damage can be prevented by touching an object that is of the same electrical potential as the lru before handling the lru itself 33
• 01115 01 g3x installation manual installation preparation rev u page 2 5 34
• Lru supply voltage current draw 34
• Other lru power requirements 34
• Table 2 3 g3x lru power requirements 34
• Wiring cabling considerations 35
• 01115 01 g3x installation manual installation preparation rev u page 2 11 40
• Figure 6 3 figure 7 6 and figure 10 5 are panel cutout templates for the gdu 37x gdu 45x gdu 46x and gmc 305 respectively 40
• Lru width height depth unit weight weight of unit and connector s 40
• Mechanical considerations 40
• Physical specifications 40
• Table 2 4 g3x lru physical specifications 40
• This section presents all information required for planning the physical layout of the g3x installation 40
• Use table 2 4 to determine panel requirements all width height and depth measurements are taken with unit rack if applicable and connectors lru dimensions are listed in each lru section figure 5 4 40
• 01115 01 g3x installation manual installation preparation rev u page 2 12 41
• Lru width height depth unit weight weight of unit and connector s 41
• Table 2 4 g3x lru physical specifications 41
• Lru sensor installation information 42
• Equipment description 43
• Gad 29 arinc 429 adapter installation 43
• Equipment available 44
• General specifications 44
• Mounting requirements 44
• Unit installation 44
• 01115 01 g3x installation manual gad 29 installation rev u page 3 3 45
• Dimensions are nominal and tolerances are not implied unless speifically stated 45
• Dimensionsin inches mm metric values are for reference only 45
• Figure 3 2 gad 29 outline drawing 45
• Outline and installation drawings 45
• 01115 01 g3x installation manual gad 29 installation rev u page 3 4 46
• Figure 3 3 gad 29 installation drawing no can terminator 46
• 01115 01 g3x installation manual gad 29 installation rev u page 3 5 47
• Figure 3 4 gad 29 installation drawing with can terminator 47
• Optional 47
• Equipment description 48
• Gap 26 pitot aoa probe installation 48
• Equipment available 49
• General specifications 49
• Required equipment 49
• Unit installation 49
• Banded wire 50
• 01115 01 g3x installation manual gap 26 installation rev u page 4 4 51
• 20 version gap 26 20 version gap 26 51
• 20 version gap 26 probe 20 version gap 26 probe 51
• Connect the white connector from the probe to the white connector from the control box this allows the control box to sense probe temperature connect the red connectors from the probe to the red connectors from the control box figure 4 6 this provides power and ground to the heaters the red wires with red connectors from the control box connect to the plain wires with red connectors from the heater and the black wires with red connectors from the control box connect to the banded wires with red connectors from the heater figure 4 5 figure 4 6 the bare red and black heater wires from the control box should be connected to 14 vdc as shown in figure 4 5 the bare blue wire from the control box can be run to a spare discrete input on the gea 24 or gsu 73 section 4 51
• Control box installation 20 version only mount the control box figure 4 8 to a suitable mounting location within two feet of the gap 26 using 4 4 or 6 pan or hex head screws choose screw length that is appropriate to mounting location 51
• Figure 4 4 gap 26 28v installation configuration 010 01074 10 only 51
• Figure 4 5 011 02964 20 probe wiring 51
• Gea 24 or gsu 73 gea 24 or gsu 73 51
• Heater control box heater control box 51
• Notes for 28v installation 1 caution 28v installations must follow this guidance and connect heaters in series as shown or probe will be damaged 2 aircraft power wiring to probe should be minimum 18 awg up to 12 ft 16 awg from 13 to 20 ft and 14 awg from 21 to 30 ft ac 43 3 1b 3 connect banded wires with insulated ms25181 22 18 awg butt splice connector or equivalent banded wires may be shortened if desired 51
• Optional optional 51
• 01115 01 g3x installation manual gap 26 installation rev u page 4 6 53
• Figure 4 7 gap 26 outline drawing 53
• Interpret per asme y14 m 1994 53
• Outline and installation drawings 53
• 01115 01 g3x installation manual gap 26 installation rev u page 4 7 54
• 1 39 1 76 54
• Figure 4 8 gap 26 heater control box used with 20 unit only 54
• Equipment description 55
• Gdu 37x display unit installation 55
• General specifications 56
• Installation information 56
• Antennas 58
• Block ground block ground 58
• Garmin shield garmin shield 58
• Gdu 37x gdu 37x 58
• Mounting requirements 58
• P3701 p3701 58
• Signal ground 35 signal ground 35 58
• Unit installation 58
• Gdu 37x panel cutout template 59
• Important ensure the page scaling setting is set to none when printing this page verify dimensions of printed template are accurate before cutting panel 59
• 01115 01 g3x installation manual gdu 37x installation rev u page 5 6 60
• Dimensions inchesmm 60
• Figure 5 5 gdu 37x outline drawing 60
• Outline and installation drawings 60
• Equipment description 62
• Gdu 45x display unit installation 62
• General specifications 63
• Installation information 63
• Block ground block ground 64
• Garmin shield garmin shield 64
• Gdu 45x gdu 45x 64
• P4501 p4501 64
• Signal ground 35 signal ground 35 64
• Unit installation 64
• Antennas 65
• Mounting requirements 65
• 01115 01 g3x installation manual gdu 45x installation rev u page 6 5 66
• Figure 6 3 gdu 45x outline drawing 66
• Notes dimensions inches mm 1 dimensions are shown for reference only 2 66
• Outline and installation drawings 66
• 01115 01 g3x installation manual gdu 45x installation rev u page 6 7 68
• Figure 6 5 gdu 45x panel cutout drawing not to scale 68
• Gdu 45x panel cutout drawing 69
• Equipment description 70
• Gdu 46x display unit installation 70
• General specifications 71
• Installation information 71
• Block ground block ground 72
• Garmin shield garmin shield 72
• Gdu 46x gdu 46x 72
• P4602 p4602 72
• Signa signa l ground ground 72
• Unit installation 72
• Antennas 73
• Mounting requirements 73
• 01115 01 g3x installation manual gdu 46x installation rev u page 7 5 74
• Figure 7 3 gdu 46x outline drawing 74
• Outline and installation drawings 74
• 01115 01 g3x installation manual gdu 46x installation rev u page 7 7 76
• Figure 7 5 gdu 46x panel cutout drawing not to scale 76
• This drawing not to scale this drawing not to scale 76
• 0 mm 185 0 mm 77
• 0 mm 262 0 mm 77
• Gdu 46x panel cutout drawing 77
• In 10 1 in 77
• Equipment description 78
• Gea 24 eis interface installation 78
• 01115 01 g3x installation manual gea 24 installation rev u page 8 2 79
• Additional equipment required 79
• Equipment available 79
• Required equipment 79
• Table 8 1 gea 24 part numbers 79
• Table 8 2 contents of gea 24 connector kit 011 02886 00 79
• Table 8 2 lists the content of the gea 24 connector kit which is required to install the unit use of the can termination kit is detailed in section 2 79
• General specifications 80
• Mounting requirements 80
• Unit installation 80
• 01115 01 g3x installation manual gea 24 installation rev u page 8 4 81
• Figure 8 2 gea 24 outline drawing 81
• Outline and installation drawings 81
• 01115 01 g3x installation manual gea 24 installation rev u page 8 6 83
• Figure 8 4 gea 24 assembly drawing with can terminator 83
• Equipment available 84
• Equipment description 84
• Gi 260 aoa indicator installation 84
• General specifications 85
• Unit calibration 85
• Unit installation 85
• Unit operation 85
• 01115 01 g3x installation manual gi 260 installation rev u page 9 3 86
• 03562 00 011 03562 00 socket socket mount mount 86
• Figure 9 3 gi 260 outline assembly drawing 86
• Mounting mounting details details 86
• Outline and installation drawings 86
• 01115 01 g3x installation manual gmc 305 installation rev u page 10 1 87
• Additional equipment required 87
• Equipment available 87
• Equipment description 87
• Figure 10 1 gmc 305 unit view 20 version shown 00 version has no yd button 87
• Gmc 305 afcs mode controller installation 87
• Required equipment 87
• Table 10 1 gmc 305 part numbers 87
• Table 10 2 contents of gmc 305 installation kit 010 12034 00 87
• Table 10 3 contents of connector kit 011 01824 00 87
• The following accessories are not provided with the gmc 305 unit the installation kit table 10 2 is required to install the unit the installation kit includes the connector kit table 10 3 and the mounting kit table 10 4 87
• The gmc 305 is a garmin automatic flight control system afcs mode controller that can be used in a g3x installation the gmc 305 provides a user interface for the autopilot function of the g3x system the gmc 305 mounts flush to the aircraft instrument panel using four threaded cap screws 87
• This section contains general information as well as installation information for the gmc 305 use this section to mount the gmc 305 unit 87
• General specifications 88
• Mounting and wiring requirements 88
• 01115 01 g3x installation manual gmc 305 installation rev u page 10 3 89
• Figure 10 2 gmc 305 outline drawing 89
• Outline and installation drawings 89
• 01115 01 g3x installation manual gmc 305 installation rev u page 10 4 90
• Figure 10 3 gmc 305 installation drawing 90
• 01115 01 g3x installation manual gmc 305 installation rev u page 10 5 91
• Figure 10 4 gmc 305 cutout drawing not to scale 91
• 01115 01 g3x installation manual gmc 305 installation rev u page 10 6 92
• Figure 10 5 gmc 305 panel cutout template 92
• 01115 01 g3x installation manual gmc 307 installation rev u page 11 1 93
• Additional equipment required 93
• Equipment available 93
• Equipment description 93
• Figure 11 1 gmc 307 unit view 00 version shown 20 version has no yd button 93
• Gmc 307 afcs mode controller installation 93
• Required equipment 93
• Table 11 1 gmc 307 part numbers 93
• Table 11 2 contents of gmc 307 installation kit 010 12034 00 93
• Table 11 3 contents of connector kit 011 01824 00 93
• The following accessories are not provided with the gmc 307 unit the installation kit table 11 2 is required to install the unit 93
• The gmc 307 is a garmin automatic flight control system afcs mode controller that can be used in a g3x installation the gmc 307 provides a user interface for the autopilot function of the g3x system the gmc 307 mounts flush to the aircraft instrument panel using two pawl latches 93
• This section contains general information as well as installation information for the gmc 307 use this section to mount the gmc 307 unit 93
• General specifications 94
• Mounting and wiring requirements 94
• 01115 01 g3x installation manual gmc 307 installation rev u page 11 3 95
• Figure 11 3 gmc 307 outline drawing 95
• Outline and installation drawings 95
• 01115 01 g3x installation manual gmc 307 installation rev u page 11 4 96
• Figure 11 4 gmc 307 installation drawing 96
• 01115 01 g3x installation manual gmc 307 installation rev u page 11 5 97
• Figure 11 5 gmc 307 cutout drawing not to scale 97
• 01115 01 g3x installation manual gmc 307 installation rev u page 11 6 98
• Cut out panel to inside line 98
• Figure 11 6 gmc 307 panel cutout template 98
• Equipment description 99
• General specifications 99
• Gmu 22 magnetometer installation 99
• 01115 01 g3x installation manual gmu 22 installation rev u page 12 2 100
• Equipment available 100
• Fabrication of a wiring harness is required sound mechanical and electrical methods and practices are required for installation of the gmu 22 refer to section 2 for wiring considerations and to section 22 for pinouts 100
• If the requirements listed in table 12 4 cannot be met a magnetometer interference test must be performed to ensure proper operation of the g3x system refer to the ahrs magnetometer installation considerations document 190 01051 00 available from the garmin website www garmin co 100
• Table 12 1 gmu 22 part numbers 100
• Table 12 2 gmu 22 accessories 100
• Table 12 3 contents of gmu 22 connector kit 011 00871 10 100
• Table 12 4 specifies recommended distances from magnetic disturbances for gmu 22 location 100
• The following guidelines describe proper mechanical installation of the garmin gmu 22 magnetometer the guidelines include requirements for proper location selection in the aircraft requirements for supporting structure and mechanical alignment and restriction on nearby equipment 100
• The gmu 22 is an extremely sensitive three axis magnetic sensor it is more sensitive to nearby magnetic disturbances than a flux gate magnetometer for this reason when choosing a mounting location for the gmu 22 observe the following distances from objects or devices that can disturb the magnetic field 100
• Unit installation 100
• 01115 01 g3x installation manual gmu 22 installation rev u page 12 4 102
• A dedicated power ground should be used and returned as a twisted pair with the power source back into the fuselage for a wing mounted gmu 22 102
• Adahrs gsu 25 73 to gmu 22 interconnect harness fabrication instructions 102
• Consideration for wing grounded lighting fixtures 102
• Figure 12 6 the gmu 22 magnetometer has an attached pigtail with male polarity the harness connector for the gmu 22 has female polarity 102
• Included in g3x w gsu 73 installation kit k10 00017 00 102
• Refer to section 12 for outline and installation drawings 102
• Table 12 5 lists parts needed for the gmu 22 interconnect harness some of the parts for installation are included in the gmu 22 connector installation kit other parts are provided by the installer reference numbers refer to item bubble numbers shown in figure 12 6 102
• Table 12 5 parts needed for gmu 22 installation 102
• Table 12 6 gmu 22 connector kit 011 00871 00 contents reference figure 12 6 102
• Table 12 6 lists material in the gmu 22 connector kit and the associated reference number as shown in 102
• The following installation practices are recommended if the required gmu 22 mounting bracket is located in the wing 102
• The wing tip lights should not have a power ground referenced to the chassis of the light assembly that would then be referenced back to the airframe ground via the light assembly mounting 102
• These installation practices will prevent magnetically interfering currents from flowing in the wing skin that encloses the gmu 22 electrically isolating the light assembly should not be used as an alternative to item 1 above unless the isolated light assembly has been analyzed for adequate protection against direct attachment of lightning 102
• 00481 00 104
• 01115 01 g3x installation manual gmu 22 installation rev u page 12 6 104
• Aircraft mounting holes 104
• Figure 12 3 gmu 22 mounting rack 104
• Gmu 22 mounting rack 104
• Outline and installation drawings 104
• 01115 01 g3x installation manual gmu 22 installation rev u page 12 7 105
• Figure 12 4 gmu 22 top mounted installation 105
• From above preferred 105
• Gmu 22 installation 105
• 01115 01 g3x installation manual gmu 22 installation rev u page 12 8 106
• Figure 12 5 gmu 22 bottom mounted installation 106
• From below 106
• Gmu 22 installation 106
• Not preferred 106
• 01115 01 g3x installation manual gmu 22 installation rev u page 12 9 107
• Figure 12 6 gmu 22 wiring details 107
• Equipment description 108
• Gps 20a waas gps position source installation 108
• 01115 01 g3x installation manual gps 20a installation rev u page 13 2 109
• Additional equipment required 109
• Equipment available 109
• For details 109
• Required equipment 109
• Status led 109
• Table 13 1 gps status led indications 109
• Table 13 2 gps 20a part numbers 109
• Table 13 3 contents of gps 20a connector kit 011 03914 00 109
• The connector kit in table 13 3 is required to install the unit it is not provided with the gps 20a unit 109
• The gps 20a has two leds on its outer case that indicate its current unit and gps status figure 13 1 109
• The gps status led is on the edge of the outer case to the left of the coax connector table 13 1 lists the gps status indications 109
• The unit status led is in the middle of the outer case between the coax and 9 pin connectors see section 109
• Antennas 110
• General specifications 110
• Mounting requirements 110
• Unit installation 110
• 01115 01 g3x installation manual gps 20a installation rev u page 13 4 111
• Figure 13 2 gps 20a outline drawing 111
• Outline and installation drawings 111
• 01115 01 g3x installation manual gps 20a installation rev u page 13 5 112
• Figure 13 3 gps 20a installation drawing no can terminator 112
• 01115 01 g3x installation manual gps 20a installation rev u page 13 6 113
• Figure 13 4 gps 20a installation drawing with can terminator 113
• Equipment description 114
• Gsa 28 autopilot servo installation 114
• 01115 01 g3x installation manual gsa 28 installation rev u page 14 2 115
• Equipment available 115
• General specifications 115
• Power specifications 115
• Status led 115
• Table 14 1 gsa 28 part numbers 115
• Table 14 2 general specifications 115
• Table 14 3 gsa 28 power specifications 115
• Table 14 4 gsa 28 torque specifications 115
• The gsa 28 has an led on its outer case that indicates its current status see section 32 for details 115
• The gsa is compatible with 14 vdc trim systems only do not connect the gsa 28 to a 28 vdc trim system 115
• The trim outputs are capable of sourcing a maximum of 1 amp of current to drive a brushed dc motor the trim outputs drive a maximum output voltage of 12 vdc 115
• Torque specifications 115
• 011 02950 01 116
• 01115 01 g3x installation manual gsa 28 installation rev u page 14 3 116
• Additional equipment required 116
• Cables the installer will fabricate and supply all system cables mounting hardware is included in the available mounting kits 116
• Required equipment 116
• Table 14 5 gsa 28 available equipment w weights 116
• Table 14 5 lists the kits available for the gsa 28 116
• Table 14 6 contents of connector kit 011 02950 00 116
• Table 14 7 contents of connector kit 9 116
• Unit installation 117
• Warning 117
• Warning 118
• Caution 119
• 01115 01 g3x installation manual gsa 28 installation rev u page 14 8 121
• Garmin currently provides the mounting kits listed in table 14 8 for the gsa 28 servo 121
• Gsa 28 mounting kits 121
• Table 14 8 mounting kits 121
• The generic kits listed in table 14 8 011 02952 00 01 02 are not specific to any airframe the airframe specific kits gpn 011 02952 10 through 16 are for use with the specified experimental aircraft the contents of each kit as well as specific instructions for their use are detailed in the figures listed in table 14 8 121
• Warning 122
• Caution 124
• Caution 125
• Warning 125
• Outline and installation drawings 127
• Unit wiring 127
• Gsa28 standard 128
• Gsa28 standard accessories 129
• Gsa28 crank arm attachments 130
• 01115 01 g3x installation manual gsa 28 installation rev u page 14 18 131
• Description 131
• Figure 14 8 gsa 28 with capstan kit and cable instructions 011 02952 02 131
• Gsa28 with capstan kit 011 02952 02 131
• Recommended bracket cutout dimensions 132
• Recommended gsa28 mounting hardware 133
• 01115 01 g3x installation manual gsa 28 installation rev u page 14 21 134
• 02952 00 134
• Figure 14 8 gsa 28 generic push pull mounting kit no bracket 011 02952 00 134
• Mounting bracket not included gsa28 mounting kit generic push pull 134
• 01115 01 g3x installation manual gsa 28 installation rev u page 14 22 135
• 02952 01 gsa28 mounting kit generic push pull w bracket 135
• Figure 14 8 gsa 28 generic push pull mounting kit w bracket 011 02952 01 135
• 01115 01 g3x installation manual gsa 28 installation rev u page 14 23 136
• Dimensions inches 136
• Figure 14 9 gsa 28 rv 6 roll mounting kit 011 02952 10 page 1 of 3 136
• 01115 01 g3x installation manual gsa 28 installation rev u page 14 25 138
• Figure 14 9 gsa 28 rv 6 roll mounting kit 011 02952 10 page 3 of 3 138
• 01115 01 g3x installation manual gsa 28 installation rev u page 14 26 139
• Description 139
• Figure 14 10 gsa 28 rv 4 8 pitch mounting kit 011 02952 11 page 1 of 4 139
• 01115 01 g3x installation manual gsa 28 installation rev u page 14 27 140
• All versions 140
• Bell crank modification rv 4 8 140
• Figure 14 10 gsa 28 rv 4 8 pitch mounting kit 011 02952 11 page 2 of 4 140
• Gsa28 stop bracket position rv 4 8 140
• Rv 4 and pre september 2006 rv 8 installation 141
• 01115 01 g3x installation manual gsa 28 installation rev u page 14 30 143
• Figure 14 11 gsa 28 rv 7 8 10 roll mounting kit 011 02952 12 page 1 of 2 143
• Garmin part number 011 02952 12 143
• Rv 7 8 10 right wing roll mounting kit for gsa28 143
• 01115 01 g3x installation manual gsa 28 installation rev u page 14 32 145
• Figure 14 12 gsa 28 rv 9 roll mounting kit 011 02952 13 page 1 of 2 145
• Garmin part number 011 02952 13 145
• Rv 9 right wing roll mounting kit 145
• 01115 01 g3x installation manual gsa 28 installation rev u page 14 36 149
• Dimensions inches 149
• Figure 14 14 gsa 28 rv 10 pitch mounting kit 011 02952 15 page 1 of 2 149
• Installing servo 149
• 01115 01 g3x installation manual gsa 28 installation rev u page 14 38 151
• Description 151
• Figure 14 15 gsa 28 rv 10 yaw mounting kit 011 02952 16 page 1 of 3 151
• Bracket installation 152
• 01115 01 g3x installation manual gsu 25 installation rev u page 15 1 154
• Equipment description 154
• Gsu 25 25b ahrs air data sensor unit installation 154
• References to the gsu 25 throughout this manual apply equally to the gsu 25b except where specifically noted 154
• Section 8 for engine airframe interface using the gea 24 up to three gsu 25 units may be installed to provide redundancy and cross checking of attitude heading and air data 154
• Table 15 1 gsu 25 functions 154
• The gsu 25 can be installed as part of the g3x system this section contains general information as well as installation information for the gsu 25 use this section to mount the gsu 25 unit 154
• The gsu 25 is an lru that provides ahrs and air data information in a single mechanical package the gsu 25 interfaces to a remote mounted gmu 22 for heading information and also computes oat and tas from inputs provided by the gtp 59 the gsu 25 does not provide engine airframe interface see 154
• The gsu 25 is intended for experimental aircraft and lsa light sport aircraft markets the garmin gsu 25 sensor unit is not a tso certified product and has received no faa approval or endorsement the gsu 25 is intended to be used as a part of the g3x system and it is not suitable for installation in type certificated aircraft 154
• The gsu 25 provides the functions in table 15 1 154
• There is no tso etso applicable to the gsu 25 154
• 01115 01 g3x installation manual gsu 25 installation rev u page 15 3 156
• Additional equipment required wiring the installer will fabricate cables and supply all wire for system connector kits 011 03002 00 and 011 03002 01 156
• Air hoses and fittings to connect pitot air static air and aoa air to the gsu 25 the gsu 25 uses a female 1 8 27 anpt fitting for each of these ports use appropriate aircraft fittings to connect to pitot static and aoa system lines per section 15 156
• General specifications 156
• Required equipment 156
• See section 2 for power current specifications and section 2 for dimension weight specifications 156
• Table 15 2 gsu 25 available equipment 156
• Table 15 2 lists the kits available for the gsu 25 156
• Table 15 3 contents of 9 pin connector kit 011 03002 00 156
• Table 15 4 contents of 15 pin connector kit 011 03002 01 contains mounting hardware 156
• Unit installation 157
• Caution 160
• 01115 01 g3x installation manual gsu 25 installation rev u page 15 8 161
• Figure 15 4 gsu 25 outline drawing 161
• Outline and installation drawings 161
• 01115 01 g3x installation manual gsu 25 installation rev u page 15 9 162
• Figure 15 5 gsu 25 installation drawing 162
• Gsu25 with connector kits and hardware 162
• Includes optional can terminator 162
• 01115 01 g3x installation manual gsu 25 installation rev u page 15 10 163
• Figure 15 6 gsu 25 orientation drawings page 1 of 3 163
• Tubes down orientations 163
• Tubes up orientations 163
• 01115 01 g3x installation manual gsu 25 installation rev u page 15 11 164
• Figure 15 6 gsu 25 orientation drawings page 2 of 3 164
• Tubes aft orientations 164
• Tubes forward orientations 164
• 01115 01 g3x installation manual gsu 25 installation rev u page 15 12 165
• Figure 15 6 gsu 25 orientation drawings page 3 of 3 165
• Forward 165
• Starboard 165
• Tubes port connectors aft 165
• Tubes port connectors forward tubes port connectors down 165
• Tubes port connectors up 165
• Tubes portside orientations 165
• Tubes starboard connectors down 165
• Tubes starboard connectors forward tubes starboard connectors aft 165
• Tubes starboard connectors up 165
• Tubes starboard orientations 165
• Equipment description 166
• Gsu 73 sensor unit installation 166
• General specifications 167
• 01115 01 g3x installation manual gsu 73 installation rev u page 16 3 168
• Gsu 73 configuration module 168
• Included in g3x w gsu 73 installation kit k10 00017 00 168
• Required equipment 168
• Table 16 1 gsu 73 available equipment 168
• Table 16 1 lists the kits available for the gsu 73 168
• Table 16 2 contents of p731 connector kit 011 01818 00 168
• Table 16 3 contents of p732 connector kit 011 01818 01 168
• The gsu 73 configuration module stores a duplicate copy of the ahrs magnetometer calibration values which are recorded upon completion of post installation calibration procedures the gsu configuration module also provides a reference temperature measurement which is used for calculating thermocouple temperatures all thermocouple temperature readouts will be red x d section 32 if the gsu configuration module is not present 168
• Unit installation 169
• 01115 01 g3x installation manual gsu 73 installation rev u page 16 7 172
• Figure 16 4 gsu 73 outline drawing 172
• Outline and installation drawings 172
• Gsu 73 possible orientations 173
• Equipment description 174
• Gtp 59 temperature probe installation 174
• General specifications 175
• Unit installation 175
• Gtp 59 icing 177
• 01115 01 g3x installation manual gtp 59 installation rev u page 17 5 178
• Figure 17 2 gtp 59 o a t probe installation drawing 178
• Outline and installation drawings 178
• Equipment description 179
• Gtr 20 vhf communications radio installation 179
• 01115 01 g3x installation manual gtr 20 installation rev u page 18 2 180
• Additional equipment required 180
• Caution 180
• Equipment available 180
• Status led 180
• Table 18 2 gtr 20 part numbers 180
• Table 18 3 contents of gtr 20 connector kit 011 03241 00 180
• The connector kit in table 18 3 is required to install the unit it is not provided with the gtr 20 unit only 010 01076 00 180
• The gtr 20 has an led located in the hole to the right of the d sub connector j2001 that indicates its current status see section 32 for details 180
• The use of ground based cellular telephones while aircraft are airborne is prohibited by fcc rules due to potential interference with onboard systems the use of ground based cell phones while the aircraft is on the ground is subject to faa regulation 14 cfr 91 1 fcc regulation 47 cfr 22 25 prohibits airborne operation of ground based cellular telephones installed in or carried aboard aircraft ground based cellular telephones must not be operated while aircraft are off the ground when any aircraft leaves the ground all ground based cellular telephones on board that aircraft must be turned off ground based cell phones that are on even in a monitoring state can disrupt gps sbas performance 180
• Unit configurations 180
• 01115 01 g3x installation manual gtr 20 installation rev u page 18 3 181
• Com specifications 181
• General specifications 181
• See table 2 3 for power current specifications and table 2 4 for dimension weight specifications 181
• Table 18 4 transmitter specifications 181
• Table 18 5 receiver specifications 181
• The gtr 20 receiver meets the requirements of rtca do 186b section 2 for a class c receiver 181
• The gtr 20 transmitter meets the requirements of rtca do 186b section 2 for a class 4 transmitter 181
• Antenna considerations 182
• Caution 182
• Installation considerations 182
• Mounting considerations 184
• Mounting wiring and power checks 185
• Outline and installation drawings 187
• 01115 01 g3x installation manual gps xm antenna installation rev u page 19 1 190
• Ga 35 ga 36 and ga 37 antennas cannot be used with gdu 37x 4xx units 190
• Gps xm antenna installation 190
• In an installation with multiple gdu 37x 4xx units each gdu can be configured to use its own internal gps receiver or to receive gps data transmitted by another gdu a minimum of one gps antenna is required for installations using more than one gdu 37x 4xx unit as the gdu will share the gps information with all gdu units additional gps antennas may be used for redundancy but are not required see section 30 4 for gdu 37x systems or section 31 8 for gdu 4xx systems for further information 190
• Non garmin antennas 190
• Table 19 1 lists non garmin antennas currently supported by the gdu 37x 4xx for non garmin antennas follow the manufacturer s installation instructions it is the installer s responsibility to ensure that their choice of antenna meets faa standards according to the specific installation 190
• Table 19 1 supported non garmin antennas 190
• The gps 20a can only be used with ga 35 ga 36 or ga 37 antennas 190
• The gps antenna should provide a gain of 16 to 25 db the gdu 37x 4xx supplies power to the antenna at 4 v 5v with a maximum current of 50 ma 190
• This section contains general information as well as installation information for gps gps waas and xm antennas use this section to mount the antenna s 190
• When a gps 20a and connected gps waas antenna is installed it can be used as the sole gps for the system however it is recommended to install a gps antenna on at least one of the gdu 37x 4xx units for redundancy 190
• 01115 01 g3x installation manual gps xm antenna installation rev u page 19 2 191
• Garmin antennas 191
• Garmin recommends the antennas shown in table 19 2 however any equivalent gps gps waas or xm antenna that meets the specifications listed in table 19 3 and table 19 4 should work with the g3x 191
• If using a garmin ga 26c or ga 26xm refer to the accompanying installation instructions 190 00082 00 or 190 00522 03 for ga 35 ga 55 55a or ga 56 or ga 57x antennas refer to this section and the outline and installation drawings in section 19 191
• Table 19 2 supported garmin antennas 191
• 01115 01 g3x installation manual gps xm antenna installation rev u page 19 3 192
• It is the installer s responsibility to ensure that their choice of antenna meets faa standards according to the specific installation this installation manual discusses only the antennas listed in table 19 2 other antennas may be acceptable but their installation is not covered by this manual 192
• Table 19 3 gps or gps waas antenna minimum requirements 192
• Table 19 4 xm satellite radio antenna minimum requirements 192
• There are several critical factors to take into consideration before installing an antenna for a satellite communications system these factors are addressed in the following sections 192
• Antenna mounting considerations 193
• Teardrop footprint antenna installation ga 35 ga 55 and ga 56 198
• Caution 199
• Arinc 743 footprint antenna installation ga 36 ga 37 ga 55a ga 57x 205
• Caution 206
• Non structural mount installation 214
• 01115 01 g3x installation manual gps xm antenna installation rev u page 19 30 219
• Figure 19 31 example teardrop footprint antenna mounting under fabric skin 219
• Figure 19 31 shows minimum distance from metal tube structure requirements for internal non structural mounting of the antenna table 19 7 presents minimum distance requirements between the tube structure and the antenna for cases where the antenna sits underneath the fabric in a metal tube structure aircraft figure 19 31 illustrates the tube diameter d and minimum distance l references in the table 19 7 219
• Minimum distance from metal tube structure requirements 219
• Table 19 7 minimum distance required between tube structure and antenna 219
• Outline and installation drawings 220
• 01115 01 g3x installation manual gps xm antenna installation rev u page 19 32 221
• Figure 19 33 ga 36 installation drawing 221
• Mounting cutout 221
• Notes 1 dimensions inches mm 221
• 01115 01 g3x installation manual gps xm antenna installation rev u page 19 33 222
• Figure 19 34 ga 37 installation drawing 222
• Mounting cutout 222
• Notes 1 dimensions inches mm 222
• 01115 01 g3x installation manual gps xm antenna installation rev u page 19 34 223
• Figure 19 35 ga 55 installation drawing 223
• Forward 223
• Ga 55 stud mount 223
• 01115 01 g3x installation manual gps xm antenna installation rev u page 19 35 224
• Figure 19 36 ga 55a installation drawing 224
• Forward 224
• Ga 55a flange mount 224
• Mounting cutout 224
• 01115 01 g3x installation manual gps xm antenna installation rev u page 19 36 225
• Figure 19 37 ga 56 installation drawing 225
• Forward 225
• Ga 56 stud mount 225
• 01115 01 g3x installation manual gps xm antenna installation rev u page 19 37 226
• Figure 19 38 ga 57x installation drawing 226
• Forward 226
• Mounting cutout 226
• 01115 01 g3x installation manual engine airframe sensor installation rev u page 20 1 227
• Engine airframe sensor installation 227
• Engine airframe sensor options 227
• In addition to the engine sensors listed in table 20 1 the g3x system can also work with many other sensors not listed that output a compatible signal refer to the sensor specifications to determine compatibility 227
• Section 31 3 for gdu 45x 46x systems prior to use 227
• Table 20 1 compatible engine airframe input sensors 227
• Table 20 1 lists the types of engine airframe sensors that may be used for the various engine airframe inputs many of these sensors are included in the garmin g3x sensor kits section 20 each of the sensors must be correctly installed and configured section 30 8 for gdu 37x systems and 227
• 01115 01 g3x installation manual engine airframe sensor installation rev u page 20 2 228
• Table 20 1 compatible engine airframe input sensors 228
• 01115 01 g3x installation manual engine airframe sensor installation rev u page 20 3 229
• Table 20 1 compatible engine airframe input sensors 229
• 01115 01 g3x installation manual engine airframe sensor installation rev u page 20 4 230
• Table 20 1 compatible engine airframe input sensors 230
• 01115 01 g3x installation manual engine airframe sensor installation rev u page 20 6 232
• Garmin g3x sensor kits 232
• Table 20 2 contents of g3x sensor kit 4 cylinder lycoming continental k00 00512 00 232
• Table 20 2 table 20 3 and table 20 4 list garmin sensor kits available for g3x installations refer to sensor interface drawings in section 27 when installing sensor kits k00 00512 00 and k00 00513 00 refer to sensor interface drawings in section 28 when installing sensor kit k00 00514 00 232
• Table 20 3 contents of g3x sensor kit 6 cylinder lycoming continental k00 00513 00 232
• Table 20 4 contents of g3x sensor kit rotax 912 k00 00514 00 232
• Engine sensor installation 233
• Actual k factor measured at 16 gph 248
• Connector installation instructions 251
• Thermocouple installation into a backshell 251
• 01115 01 g3x installation manual connector installation instructions rev u page 21 3 253
• Jackscrew configuration module installation into a jackscrew backshell 253
• Table 21 2 gpn 011 00979 20 kit w eeprom and pins 253
• Table 21 2 table 21 3 list parts needed to install a jackscrew configuration module with pins or with sockets parts for these installations are included in the 011 00979 20 and 011 00979 22 kits which are included in the g3x w gsu 73 installation kit k10 00017 00 configuration modules are to be installed in the backshells of the p732 connector for the gsu 73 use 011 00979 20 in table 21 2 the p3701 connector for gdu 37x designated as pfd1 use 011 00979 22 in table 21 3 or the p4501 4601 connector for the gdu 45x 46x designated as pfd1 use 010 12553 00 in table 21 4 item numbers in table 21 2 table 21 3 and table 21 4 correspond to figure 21 3 and figure 21 4 253
• Table 21 3 gpn 011 00979 22 kit w eeprom and sockets 253
• Table 21 4 gpn 010 12253 00 config module w eeprom temp connext 253
• 01115 01 g3x installation manual connector installation instructions rev u page 21 6 256
• Jackscrew backshell installation instructions 256
• Shield block installation parts 256
• Table 1 29 parts listed in table 21 6 are to be provided by the installer 256
• Table 21 5 and table 21 6 list the parts needed to install a shield block the item numbers in these tables correspond to figure 21 5 parts listed in table 21 5 are supplied in the lru connector kits see 256
• Table 21 5 parts supplied for a shield block installation figure 21 5 256
• Table 21 6 parts not supplied for a shield block installation figure 21 5 256
• 01115 01 g3x installation manual connector installation instructions rev u page 21 14 264
• Figure 21 9 method b quick term for shield termination 264
• Reference the following mil spec for general teflon heat shrinkable tubing m23053 5 x y 264
• Secondary method 264
• Solder a flat braid item 4 figure 21 9 to the folded back shield on the prepared cable assembly item 2 figure 21 5 ensure a solid electrical connection through the use of acceptable soldering practices use care to avoid applying excessive heat that burns through the insulation of the center conductors and shorts the shield to the signal wire slide a minimum of 0 5 inches of teflon heat shrinkable tubing item 3 figure 21 9 onto the prepared wire assembly and shrink using a heat gun the chosen size of heat shrinkage tubing must accommodate both the number of conductors present in the cable as well as the flat braid item 4 figure 21 9 to be attached 264
• Table 21 8 shielded cable preparations quick term 264
• Teflon heat shrinkable tubing 264
• Warning 266
• Warning 267
• 01115 01 g3x installation manual lru pinouts rev u page 22 1 268
• Connector references jxxx x and pxxx x are used throughout this section and in section 23 through section 29 the letter j or p designates the connector whether on the lru or wiring harness j jack refers to the connector on the lru and p plug refers to the connector on the wiring harness j or p designate the connector only regardless of contact type pin or socket however gdu 46x connectors on the lru are designated as p460x 268
• Figure 22 1 j291 on gad 29 as viewed looking at connector on unit 268
• J291 connector 268
• Lru pinouts 268
• Use the information in this section along with other applicable sections appendices in this document to construct the wiring required for the g3x installation 268
• 01115 01 g3x installation manual lru pinouts rev u page 22 2 269
• Figure 22 2 j292 on gad 29 as viewed looking at connector on unit 269
• J292 connector 269
• 01115 01 g3x installation manual lru pinouts rev u page 22 3 270
• Arinc 429 rx tx 270
• The arinc 429 outputs conform to arinc 429 electrical specifications when loaded with up to 5 standard arinc 429 receivers each arinc 429 transmitter pin is physically connected to two dsub pins when running one transmitter to two receivers use two separate pins to avoid splicing wires running one transmitter to more than two receivers will require splicing wires 270
• This section covers the power input requirements aircraft power 1 and aircraft power 2 are diode ored to provide power redundancy 270
• 01115 01 g3x installation manual lru pinouts rev u page 22 4 271
• Can bus 271
• The can bus conforms to the bosch standard for controller area network 2 b and complies with iso 11898 pins 9 and 21 are used to terminate the can bus to terminate the can bus at the gad 29 short the pins 9 and 21 together refer to section 2 for details on configuring and terminating the can bus the can bus on j241 shall be used for communications between g3x lrus 271
• 01115 01 g3x installation manual lru pinouts rev u page 22 5 272
• Figure 22 3 j3701 on gdu 37x as viewed looking at connector on unit 272
• Gdu 37x 272
• J3701 connector 272
• 01115 01 g3x installation manual lru pinouts rev u page 22 6 273
• The gdu 37x rear connector j3701 is electrically isolated for installations using shielded cables a ground pin must be tied to the connector shell 273
• 01115 01 g3x installation manual lru pinouts rev u page 22 7 274
• Aircraft power 274
• In a single display system configure the display as pfd1 in a two display system configure one display as pfd1 and the other display as mfd in a three display system one display is pfd1 one is the mfd and the third is pfd2 configure the gdu 37x units per the following tables a gdu 37x can be manually placed in reversionary mode by wiring pin 25 to a two pole switch that toggles between open and ground when the switch is open the display will operate normally when the switch is grounded the display changes to reversionary mode showing the engine bar at the top of the display and a split screen pfd and mfd below other displays in the system will not be affected by manually placing a display into reversionary mode do not connect a switch to ground for pins 9 or 10 doing so can cause communication errors grounding pin 42 will place the gdu 37x in demo mode which is for in store demonstration use only never ground pin 42 in an aircraft installation 274
• Mode selections cdu system id program pins 274
• The gdu 37x can operate using power from one or both inputs aircraft power 1 and aircraft power 2 the pins are internally connected using diodes to prevent current from flowing between the two power inputs aircraft power 2 is for connecting to an alternate power source such as on aircraft with two electrical buses 274
• 01115 01 g3x installation manual lru pinouts rev u page 22 8 275
• Can bus 275
• Channels of rs 232 i o data 275
• Configuration module 275
• Connect the configuration module to the pfd1 unit do not connect a config module to pfd2 or the mfd 275
• Serial data 275
• This data bus conforms to the bosch standard for controller area network 2 b this bus complies with iso 11898 can bus termination should be connected to can bus lo for the gdu that is located at the end of the bus farthest from the gsu 73 see section 2 for details 275
• 01115 01 g3x installation manual lru pinouts rev u page 22 9 276
• Lighting 276
• Mono audio 276
• Stereo audio 276
• The gdu 37x display brightness can be configured to track 28 vdc or 14 vdc lighting busses using these inputs 276
• The left and right common pins pins 2 and 20 may be tied together or only one may be used it is not necessary to use both common pins 276
• The mono audio output provides audio alerts for connection to an unswitched input on an intercom or audio panel 276
• The stereo audio output provides siriusxm audio for connection to an entertainment input on an intercom or audio panel audio alerts may optionally be reproduced on the stereo audio output in addition to the mono audio output see section 30 2 for instructions regarding the sound config page 276
• 01115 01 g3x installation manual lru pinouts rev u page 22 10 277
• Figure 22 4 p4501 4601 on gdu 45x 46x as viewed looking at connector on unit 277
• Figure 22 5 gdu 45x 46x to gsu 25 backup data path connections 277
• Gdu 45x 46x 277
• It is recommended to connect the serial port from the gsu 25 use the gsu 25 designated as 1 in a multiple gsu 25 installation to the p4x01 connector regardless of mounting method used for the gsu 25 per figure 22 5 277
• P4501 4601 connector 277
• The p4501 4601 connector can be used for connections to the gsu 25 when mounting the gsu 25 to the back of the gdu 45x 46x figure 7 3 this mounting method may not be recommended for all installations contact garmin for details before using this method 277
• 01115 01 g3x installation manual lru pinouts rev u page 22 11 278
• Figure 22 6 view of p4502 4602 connector from back of unit 278
• P4502 4602 connector 278
• 01115 01 g3x installation manual lru pinouts rev u page 22 12 279
• 01115 01 g3x installation manual lru pinouts rev u page 22 13 280
• Do not use p4503 4603 this connector is reserved for future development 280
• Figure 22 7 view of p4503 4603 connector from back of unit 280
• P4503 4603 connector 280
• 01115 01 g3x installation manual lru pinouts rev u page 22 16 283
• Configuration module 283
• Configure the gdu 45x 46x units per the following tables a gdu 45x 46x can be manually placed in reversionary mode by wiring pin 25 to a two pole switch that toggles between open and ground when the switch is open the display will operate normally when the switch is grounded the display changes to reversionary mode showing the engine bar at the top of the display and a split screen pfd and mfd below other displays in the system will not be affected by manually placing a display into reversionary mode do not connect a switch to ground for pins 9 or 10 doing so can cause communication errors grounding pin 42 will place the gdu 45x 46x in demo mode which is for in store demonstration use only never ground pin 42 in an aircraft installation 283
• Connect the configuration module to the pfd1 unit do not connect a config module to pfd2 mfd1 or mfd2 283
• 01115 01 g3x installation manual lru pinouts rev u page 22 17 284
• Can bus 284
• Channels of rs 232 i o data 284
• Lighting 284
• Serial data 284
• The gdu 45x 46x display and keys can be configured to track 28 vdc or 14 vdc lighting busses using these inputs these inputs are reference voltage inputs not power inputs with a high impedance of 100 kω for pin 43 and 200 kω for pin 26 this backlight level reference signal may be supplied with something as simple as a 10k potentiometer connected to power and ground drawing 1 ma 14 vdc the center tap on this potentiometer is connected to one of the pins 43 or 26 in the following table for providing this reference signal to more than one device a commercially available regulated backlight voltage reference is recommended 284
• This data bus conforms to the bosch standard for controller area network 2 b this bus complies with iso 11898 can bus termination should be connected to can bus lo for the gdu that is located at the end of the bus farthest from the gsu 73 see section 2 for details 284
• 0 mono audio 285
• 01115 01 g3x installation manual lru pinouts rev u page 22 18 285
• 1 stereo audio 285
• The mono audio output provides audio alerts for connection to an unswitched input on an intercom or audio panel 285
• The stereo audio output provides siriusxm audio for connection to an entertainment input on an intercom or audio panel audio alerts may optionally be reproduced on the stereo audio output in addition to the mono audio output see section 31 5 for instructions regarding the sound config page 285
• 01115 01 g3x installation manual lru pinouts rev u page 22 19 286
• Figure 22 9 j241 on gea 24 as viewed looking at connector on unit 286
• J241 connector 286
• 01115 01 g3x installation manual lru pinouts rev u page 22 20 287
• Figure 22 10 j242 on gea 24 as viewed looking at connector on unit 287
• J242 connector 287
• 01115 01 g3x installation manual lru pinouts rev u page 22 21 288
• Figure 22 11 j243 on gea 24 as viewed looking at connector on unit 288
• J243 connector 288
• 01115 01 g3x installation manual lru pinouts rev u page 22 22 289
• Figure 22 12 j244 on gea 24 as viewed looking at connector on unit 289
• Indicates active low 289
• J244 connector 289
• 01115 01 g3x installation manual lru pinouts rev u page 22 23 290
• 01115 01 g3x installation manual lru pinouts rev u page 22 24 291
• Aircraft power 291
• Both data buses conform to the bosch standard for controller area network 2 b the busses comply with iso 11898 refer to section 2 for details on configuring and terminating the can bus the can bus on j241 shall be used for communications between g3x lrus the can 2 bus on j244 shall be used to communicate with fadec engine controllers and shall not be connected to other g3x lrus the can2 bus is not terminated at the unit refer to the wiring diagrams for how to terminate the second can bus if used 291
• Can bus 291
• The gea 24 has two pins for aircraft power inputs of 14 28 vdc and can operate using power from one or both inputs aircraft power 1 and aircraft power 2 the pins are internally connected using diodes to prevent current from flowing between the two power inputs aircraft power 2 is for connecting to an alternate power source such as on aircraft with two electrical buses the two aircraft power inputs may optionally be used to monitor aircraft bus voltage see section 28 7 for configuration 291
• 01115 01 g3x installation manual lru pinouts rev u page 22 25 292
• Digital inputs 292
• The inputs are capable of sensing frequencies of the range 1 hz to 100 khz with a configurable debounce filter sensed signals can be either an ac voltage with a peak to peak value of greater than 1 v or an open collector type input these inputs are configured by the gdu refer to section 30 8 for gdu 37x systems and section 31 3 for gdu 45x 46x systems 292
• 01115 01 g3x installation manual lru pinouts rev u page 22 26 293
• A low 0 vdc vin 3 vdc or rin 375 ω active 293
• B high 8 vdc vin 36 vdc active 293
• Discrete inputs 293
• Kω inactive 293
• Kω or rin 375 ω inactive 293
• Section 31 3 for gdu 45x 46x systems 293
• The gea 24 has 4 configurable discrete inputs that can be used as either active high or active low these inputs are configured by the gdu refer to section 30 8 for gdu 37x systems and to 293
• When configured as active high the inputs conform to the following specification 293
• When configured as active low the inputs conform to the following specification 293
• 0 fuel quantity 294
• 01115 01 g3x installation manual lru pinouts rev u page 22 27 294
• Active vout 0 vdc with 20 ma sink current 294
• Discrete out 1 is master warning goes low when a red warning cas alert is active 294
• Discrete out 2 is master caution goes low when a yellow caution cas alert is active 294
• Discrete outputs 294
• Fuel quantity inputs have an internal pull up resistor that can be enabled for resistive fuel sensor inputs the inputs can also support capacitive sensors as either voltage inputs or digital inputs these inputs are configured by the gdu refer to section 30 8 for gdu 37x systems and to section 31 3 for gdu 45x 46x systems 294
• Inactive floating can be pulled up to externally sourced vout in the range 0 vout 33 vdc 294
• Leakage current in the inactive state is typically 10 ua to ground 294
• Sink current must be externally limited to 20 ma max 294
• The gea 24 has 2 annunciator outputs these outputs do not require any configuration and can be optionally wired to an external annunciator discrete out 1 acts as a master warning annunciator and is active any time a warning cas message red alert is displayed on the pfd discrete out 2 acts as a master caution annunciator and is active any time a caution cas message yellow alert is displayed on the pfd reference section 26 for wiring guidance 294
• The two states of these outputs are as follows 294
• 01115 01 g3x installation manual lru pinouts rev u page 22 28 295
• 1 gp general purpose inputs 295
• 3 for gdu 45x 46x systems and are capable of reading any voltage up to 40 vdc the gea 24 has 7 position inputs labeled pos 1 through 7 and 7 general purpose inputs gp 1 through 7 to limit the length of pin names gpx is not used on all pins each of these are paired together 295
• Potentiometer based sensors can be used by connecting the potentiometer across a 5 v supply and ground and reading back the center tap voltage on gp1 g7 pos1 7 some general purpose inputs have multiple functions 295
• These inputs are configured by the gdu refer to section 30 8 for gdu 37x systems and to section 295
• 01115 01 g3x installation manual lru pinouts rev u page 22 29 296
• 2 pressure inputs 296
• 3 voltage inputs 296
• 4 shunt 296
• All pressure inputs are capable of accepting input voltages of up to 40 vdc the oil pressure input can also accommodate resistive and constant current source sensors these inputs are configured by the gdu refer to section 30 8 for gdu 37x systems and to section 31 3 for gdu 45x 46x systems 296
• The two bus voltage inputs are capable of accepting voltages of up to 40 vdc these inputs are configured by the gdu section 30 8 for gdu 37x systems and to section 31 3 for gdu 45x 46x systems 296
• 01115 01 g3x installation manual lru pinouts rev u page 22 30 297
• 5 system id 297
• 6 temperature inputs 297
• If installing an ungrounded thermocouple to an analog in input a dc reference must be added to the lo input this can be accomplished by adding a resistance of 1 mω or less between ground and the analog in lo input that the ungrounded thermocouple is installed on 297
• Pins 1 2 3 and 4 must be left open floating for a single gea 24 installation when using a gea 24 and gsu 73 in the same system pins 1 and 2 should be connected together in order to configure the gea 24 as the eis 2 lru 297
• Some thermocouple inputs are multi purpose capable and have several configuration options cht5 cht6 gp6 gp7 misc temp 1 misc temp 2 and oil temp can be used for resistive based temperature sensors these inputs are configured by the gdu refer to section 30 8 for gdu 37x systems and to section 31 3 for gdu 45x 46x systems 297
• 01115 01 g3x installation manual lru pinouts rev u page 22 31 298
• The pinout of j242 is compatible with 25 pin thermocouple wiring harnesses used in some third party eis systems 298
• 01115 01 g3x installation manual lru pinouts rev u page 22 32 299
• 7 transducer output power 299
• The gea 24 supplies output power for engine airframe sensors that may require supply voltage excitation the gea 24 outputs voltage levels of 5 and 12 vdc each output can supply a maximum of 50 ma if more than 50 ma is needed for a sensor 3 outputs of the same voltage may be spliced together to allow an output current of up to 100 ma transducers that require more current such as princeton capacitive fuel quantity converters must be supplied from aircraft power instead of gea 24 transducer power output pins 299
• The transducer output pins are listed in the following table additionally the pins are also listed in the tables for their respective default functionality 299
• 01115 01 g3x installation manual lru pinouts rev u page 22 33 300
• Aircraft power 1 and power ground are connected to a 14 28 vdc supply 300
• Can bus 300
• Figure 22 13 gi 260 pigtail harness 300
• Pigtail connections 300
• The can bus conforms to the bosch standard for controller area network 2 b and complies with iso 11898 refer to section 2 for details on wiring the can bus using the can bus is the preferred data interconnect for the gi 260 in a g3x system 300
• 01115 01 g3x installation manual lru pinouts rev u page 22 34 301
• Lighting 301
• Mono audio 301
• Mono out provides audio alerts for connection to an unswitched input on an intercom or audio panel audio shield is grounded at the gi 260 if the audio lines in the gi 260 pigtail harness are not long enough to connect directly to the audio panel audio shield may be used to splice the shields together on the audio lines for other installations the shields should be spliced together but the audio panel shield should be left floating figure 23 1 refer to the audio panel installation manual for further guidance on connecting and terminating the shield 301
• Rs 232 channel 301
• The gi 260 display brightness can track either a 28 vdc or 14 vdc lighting bus using these inputs if left unconnected unit will use a photocell to adjust lighting 301
• The rs 232 outputs conform to eia standard rs 232c with an output voltage swing of at least 5 v when driving a standard rs 232 load this channel is not used in typical g3x installations 301
• 01115 01 g3x installation manual lru pinouts rev u page 22 35 302
• Figure 22 14 j3051 on gmc 305 as viewed looking at connector on unit 302
• Gmc 305 302
• J3051 connector 302
• This section covers the power input requirements the gmc 305 is compatible with 14v and 28v systems aircraft power 1 and aircraft power 2 are diode ored to provide power redundancy 302
• 01115 01 g3x installation manual lru pinouts rev u page 22 36 303
• Figure 23 1 303
• Lighting 303
• Rs 232 channel 1 should be connected to an available rs 232 port on a gdu display rs 232 channel 2 should be connected to the gsa 28 roll servo rs 232 port in a garmin autopilot system see 303
• Serial data 303
• The gmc 305 can track a 14 vdc lighting bus using these inputs the gmc 305 can also automatically adjust for ambient lighting conditions based on photocell input if no voltage is supplied to the lighting bus input the gmc 305 will automatically adjust for ambient lighting conditions using its built in photocell 303
• The rs 232 outputs conform to eia standard rs 232c with an output voltage swing of at least 5 v when driving a standard rs 232 load 303
• 01115 01 g3x installation manual lru pinouts rev u page 22 37 304
• Figure 22 15 j3071 on gmc 307 as viewed looking at connector on unit 304
• Gmc 307 304
• J3071 connector 304
• This section covers the power input requirements the gmc 307 is compatible with 14v and 28v systems aircraft power 1 and aircraft power 2 are diode ored to provide power redundancy 304
• 01115 01 g3x installation manual lru pinouts rev u page 22 38 305
• Figure 23 1 305
• Lighting 305
• Rs 232 channel 1 should be connected to an available rs 232 port on a gdu display rs 232 channel 2 should be connected to the gsa 28 roll servo rs 232 port in a garmin autopilot system see 305
• Serial data 305
• The gmc 307 can track a 14 vdc lighting bus using these inputs the gmc 307 can also automatically adjust for ambient lighting conditions based on photocell input if no voltage is supplied to the lighting bus input the gmc 307 will automatically adjust for ambient lighting conditions using its built in photocell 305
• The rs 232 outputs conform to eia standard rs 232c with an output voltage swing of at least 5 v when driving a standard rs 232 load 305
• 01115 01 g3x installation manual lru pinouts rev u page 22 39 306
• Figure 22 16 j441 on gmu 22 as viewed looking at connector on unit 306
• J441 connector 306
• Power function 306
• Power input pins accept supply voltage from adahrs gsu 25 73 306
• Rs 485 the rs 485 pins provide data to the adahrs gsu 25 73 306
• Serial data 306
• The rs 232 input pin accepts data from the adahrs gsu 25 73 306
• 01115 01 g3x installation manual lru pinouts rev u page 22 40 307
• Can bus 307
• Figure 22 17 j201 on gps 20a as viewed looking at connector on unit 307
• Gps 20a 307
• J201 connector 307
• Power function 307
• The can bus conforms to the bosch standard for controller area network 2 b and complies with iso 11898 refer to section 2 for details on wiring the can bus using the can bus is the preferred data interconnect for the gps 20a in a g3x system 307
• This section covers the power input requirements the gps 20a is compatible with 14v and 28v systems aircraft power 1 and aircraft power 2 are diode ored to provide power redundancy 307
• 01115 01 g3x installation manual lru pinouts rev u page 22 41 308
• Rs 232 channel 308
• Rs 232 tx 1 is always configured to provide garmin ads b data to be used by a mode s extended squitter es transponder such as the gtx 23es or gtx 330es 308
• Rs 232 tx 2 is always configured to provide nmea out at 9600 baud 1 start bit 1 stop bit 8 data bits and no parity the supported nmea sentences are gprmc gpgga gpgsa gpgsv gpvtg and pgrmt 308
• See figure 23 2 for wiring information 308
• The rs 232 outputs conform to eia standard rs 232c with an output voltage swing of at least 5 v when driving a standard rs 232 load 308
• 01115 01 g3x installation manual lru pinouts rev u page 22 42 309
• Figure 22 18 j281 on gsa 28 as viewed looking at connector on unit 309
• J281 connector 309
• Power function 309
• Supply voltage 14 28vdc inputs 309
• 01115 01 g3x installation manual lru pinouts rev u page 22 43 310
• Ap disconnect 310
• Ap disconnect should be connected to an active low push button switch that disengages the autopilot and optionally engages it if configured press and hold the switch to allow for control wheel steering by disengaging the clutch and servo motor the ap disconnect input must be connected to both the pitch and the roll servos and can optionally be connected to the yaw damper servo 310
• Can bus 310
• Id strap 310
• Pins 7 and 8 tx and rx connect to the gmc 30x rs232 channel 2 on the roll servo only 310
• Pitch servo jumper wire installed from pin 5 to pin 8 310
• Roll servo no jumper wire installed 310
• The id strap inputs are used to configure the gsa 28 as a roll pitch or yaw servo by installing a jumper wire or not installing a jumper wire per the following 310
• This data bus conforms to the bosch standard for controller area network 2 b this bus complies with iso 11898 see section 2 for can bus details 310
• Yaw servo jumper wire installed from pin 6 to pin 7 310
• 01115 01 g3x installation manual lru pinouts rev u page 22 44 311
• A removal adapter gpn 011 03158 00 is provided with each gsa 28 connector kit that can be used when a gsa 28 is removed the adapter keeps that node on the can bus in the same state as when the servo was connected either terminated or un terminated the adapter also allows trim signals to pass through when the servo is removed 311
• The trim inputs should connect to the panel trim switch the trim outputs should connect to the trim servo maximum output current of the trim outputs is 1 amp if the gsa 28 is not powered a fail safe feature causes the trim inputs to connect directly to the trim outputs if the servo is powered and configured for speed scheduling the servo drives the trim outputs based on the trim inputs and aircraft speed if the servo is powered with the autopilot and auto trim feature is enabled the servo has full control of the trim outputs 311
• 01115 01 g3x installation manual lru pinouts rev u page 22 45 312
• Figure 22 19 j251 on gsu 25 as viewed looking at connector on unit 312
• Gsu 25 25b 312
• 01115 01 g3x installation manual lru pinouts rev u page 22 46 313
• Figure 22 20 j252 on gsu 25 as viewed looking at connector on unit 313
• 01115 01 g3x installation manual lru pinouts rev u page 22 47 314
• Aircraft power 314
• Channels of rs 232 rx and 3 channels of rs 232 tx data 314
• Rs 232 1 can optionally be connected to a gdu display to provide a redundant path for attitude data also used to configure a gsu 25 as adahrs 3 314
• Rs 232 2 transmits data to the gmu 22 314
• Rs 232 3 connects to a gtx transponder to provide pressure altitude data and remote transponder control transponder should only be connected to adahrs 1 not 2 or 3 314
• Serial data 314
• The gsu 25 can operate using power from one or both inputs aircraft power 1 and aircraft power 2 the pins are internally connected using diodes to prevent current from flowing between the two power inputs aircraft power 2 is for connecting to an alternate power source such as on aircraft with two electrical buses 314
• The gsu 25 outputs supply voltage to the gmu 22 via pins 6 7 314
• 01115 01 g3x installation manual lru pinouts rev u page 22 48 315
• Can bus this data bus conforms to the bosch standard for controller area network 2 b this bus complies with iso 11898 see section 2 for details 315
• Refer to figure 23 1 for connection drawing 315
• Rs 485 input the gsu 25 contains one channel of rs 485 serial data communications for receiving data from the gmu 22 315
• Temperature inputs temperature input is used for outside air temperature oat computations the temperature input is a three wire temperature probe interface oat power out and oat high are connected internally at the oat probe a gtp 59 or other supported temperature probe is required for the adahrs gsu 25 73 installation that is configured as adahrs 1 the gtp 59 is a resistive temperature device rtd refer to figure 17 2 for the temperature probe interconnect 315
• Unit id 315
• 01115 01 g3x installation manual lru pinouts rev u page 22 49 316
• Connector description 316
• Figure 22 21 rear view of connector end plate 316
• Figure 22 22 j731 on gsu 73 as viewed looking at connector on unit 316
• J731 connector 316
• J731 pins are configured as shown in preceding figure j731 pin assignments are given in the following table additional tables group pin connections by function 316
• The gsu 73 has one 62 pin connector j731 and one 78 pin connector j732 located on the connector end of the unit as shown below j731 and j732 are clearly marked on the connector end plate 316
• 01115 01 g3x installation manual lru pinouts rev u page 22 50 317
• 01115 01 g3x installation manual lru pinouts rev u page 22 51 318
• Figure 22 23 j732 on gsu 73 as viewed looking at connector on unit 318
• J732 connector 318
• 01115 01 g3x installation manual lru pinouts rev u page 22 52 319
• 01115 01 g3x installation manual lru pinouts rev u page 22 53 320
• Aircraft power 320
• Power i o 320
• The gsu 73 has four inputs for aircraft power bus inputs of 14 28 vdc and can operate using power from one or both inputs aircraft power 1 and aircraft power 2 the pins are internally connected using diodes to prevent current from flowing between the two power inputs aircraft power 2 is for connecting to an alternate power source such as on aircraft with two electrical buses the two aircraft power inputs may optionally be used to monitor aircraft bus voltage see section for configuration 320
• 01115 01 g3x installation manual lru pinouts rev u page 22 54 321
• Magnetometer power 321
• The gsu 73 outputs supply voltage to the gmu 22 via pins 38 39 321
• The gsu 73 supplies output power for engine airframe sensors that may require supply voltage excitation the gsu 73 outputs voltage levels of 5 10 and 12 vdc these outputs may be spliced to allow connection to multiple sensors if needed max current specs are listed in the following table 321
• Transducer output power 321
• Transducers that require more current such as princeton capacitive fuel quantity converters must be supplied from aircraft power instead of gsu 73 transducer power output pins 321
• 01115 01 g3x installation manual lru pinouts rev u page 22 55 322
• Arinc 429 input output 322
• Rs 232 input output 322
• Serial data electrical characteristics 322
• The arinc 429 outputs conform to arinc 429 electrical specifications when loaded with up to 5 standard arinc 429 receivers 322
• The rs 232 outputs conform to eia standard rs 232c with an output voltage swing of at least 5 v when driving a standard rs 232 load rs 232 out 2 is not currently active rs 232 in out 3 is used for connection to a transponder figure 24 2 figure 24 2 and is not configurable always on by default 322
• 01115 01 g3x installation manual lru pinouts rev u page 22 56 323
• Can bus 323
• Configuration module interface 323
• Connect the gsu 73 to the configuration module using the 4 pins listed below 323
• Rs 485 input 323
• Section 2 for details 323
• The gsu 73 contains one channel of rs 485 serial data communications for receiving data from the gmu 22 323
• This data bus conforms to the bosch standard for controller area network 2 b this bus complies with iso 11898 one gdu should be terminated can bus termination connected to can bus lo and the gsu should be terminated if gsu is located at the end of the bus see section 23 see 323
• 01115 01 g3x installation manual lru pinouts rev u page 22 57 324
• Active low discrete inputs 324
• Active vout 0 vdc with 20 ma sink current sink current must be externally limited to 20 ma max 324
• Discrete i o 324
• Discrete out 1 is master warning goes low when a red warning cas alert is active discrete out 2 is master caution goes low when a yellow caution cas alert is active 324
• Discrete outputs 324
• Kω inactive 324
• Low 0 vdc vin 3 vdc or rin 375 ω active 324
• The gsu 73 has 2 annunciator outputs these outputs do not require any configuration and can be optionally wired to an external annunciator discrete out 1 acts as a master warning annunciator and is active any time a warning cas message red alert is displayed on the pfd discrete out 2 acts as a master caution annunciator and is active any time a caution cas message yellow alert is displayed on the pfd reference section 26 for wiring guidance 324
• The gsu 73 has 4 configurable discrete inputs conforming to 324
• The two states of these outputs are as follows inactive floating can be pulled up to externally sourced vout in the range 0 vout 33 vdc leakage current in the inactive state is typically 10 ua to ground 324
• 01115 01 g3x installation manual lru pinouts rev u page 22 58 325
• Analog input configuration 325
• If installing an ungrounded thermocouple to an analog in input a dc reference must be added to the lo input this can be accomplished by adding a resistance of 1 mω or less between ground and the analog in lo input that the ungrounded thermocouple is installed on 325
• Some analog inputs are multi purpose capable and have several configuration options these inputs are configured by the gdu refer to section 30 8 for gdu 37x systems and to section 31 3 for gdu 45x 46x systems and are capable of reading any voltage up to 40 vdc 325
• 01115 01 g3x installation manual lru pinouts rev u page 22 59 326
• 01115 01 g3x installation manual lru pinouts rev u page 22 60 327
• Each frequency counter channel will be configured for a high or low speed input based on the signal being measured 327
• Frequency counter inputs 327
• Rpm rotax maximum frequency 6 khz rpm other maximum frequency 4 khz fuel flow floscan 201 b6 maximum frequency 500 hz fuel flow ei ft60 maximum frequency 1 khz fuel quantity capacitive maximum frequency 50 khz 327
• Temperature input is used for outside air temperature oat computations the temperature input is a three wire temperature probe interface oat power out and oat high are connected internally at the oat probe a gtp 59 or other supported temperature probe is required for the gsu 73 installation the gtp 59 is a resistive temperature device rtd refer to figure 17 2 for the temperature probe interconnect 327
• Temperature inputs 327
• The following table lists the minimum frequency maximum frequency and duty cycles for each of these inputs 327
• 01115 01 g3x installation manual lru pinouts rev u page 22 63 330
• Figure 22 26 j2001 looking at rear of unit 330
• J2001 connector 330
• Table 22 1 j2001 connector 330
• 01115 01 g3x installation manual lru pinouts rev u page 22 64 331
• Can bus 331
• Pins 1 20 supply power to the gtr 20 refer to drawings in section 25 for power and ground wire gauges 331
• Refer to drawings in section 25 for id connections 331
• Table 22 1 j2001 connector 331
• The can bus conforms to the bosch standard for controller area network 2 b and complies with iso 11898 pins 25 and 26 are used to terminate the can bus to terminate the can bus at the gtr 20 short the pins 25 and 26 together refer to section 2 for details on configuring and terminating the can bus the can bus on j2001 shall be used for communications between g3x lrus 331
• Unit id 331
• 01115 01 g3x installation manual lru pinouts rev u page 22 65 332
• Aux mono audio 332
• Auxiliary audio mono audio inputs have a nominal input impedance of 600 ω max rated input level is 5 vrms 332
• Headset audio 332
• Headset audio outputs 332
• Mic audio 332
• Pilot mic in and copilot mic in are set in the factory so that 150 mvrms modulates the transmitter to 90 nominally at 1000 hz the microphone gain adjustment is made through configuration mode 332
• Pilot mic in and copilot mic in are standard carbon or dynamic mic inputs with integrated preamps providing minimum 20 mvrms into a 150 ω ac load 332
• 01115 01 g3x installation manual lru pinouts rev u page 22 66 333
• 0pilot copilot ptt inputs 333
• Active low discrete inputs are considered active if either the voltage to ground is 3 vdc or the resistance to ground is 375 333
• Music inputs 333
• Receiver audio 333
• Receiver audio out is a 40 mw audio output that is intended to drive a recording device or an audio panel 333
• Receiver audio out is the summation of the receiver audio com sidetone audio intercom audio and aux audio 333
• Receiver audio out supplies 40 mw 4 vrms into a 600 load and is generally connected to the audio panel if used this output can also drive a recording device when driving a recording device the output level will typically need to be reduced the output level is controlled through configuration mode 333
• The music inputs are noise rejecting and have a nominal input impedance of 600 ω the max rated input level is 1 vrms the music lo must be connected to the music source along with music right and music left if music lo is not connected music volume will be low or inaudible noisy and distorted 333
• When pulled low these inputs allow the audio that is present on the pilot copilot mic in to be transmitted over the radio 333
• 01115 01 g3x installation manual lru pinouts rev u page 22 68 335
• Connector description 335
• Figure 22 27 j2301 on gtx 23 as viewed looking at connector on unit 335
• J2301 connector 335
• Pin pin name i o 335
• The gtx 23 has one 62 pin connector j2301 as shown below all electrical connections are made through j2301 except for the antenna and shield ground 335
• 01115 01 g3x installation manual lru pinouts rev u page 22 69 336
• Pin pin name i o 336
• 01115 01 g3x installation manual lru pinouts rev u page 22 70 337
• Aircraft power 337
• Discrete functions 337
• Discrete inputs 337
• Discrete outputs 337
• External ident select remote ident is a momentary input when grounded it activates the ident pulse for 18 seconds in mode a replies 337
• External standby select remote standby is not a momentary input when external standby select is grounded the gtx 23 operates in standby mode in this mode the transponder will not squitter or reply to interrogations 337
• External suppression should be connected if a dme or tcas is installed in the aircraft avionics system the gtx 23 suppression i o pulses may not be compatible with all models of dme or tcas known incompatible dme units include the bendix king kn 62 kn 64 and kns 80 these models have an output only suppression port and can be damaged by the gtx 23 mutual suppression output in this case do not connect the gtx 23 s suppression pin to the incompatible unit s suppression pin however do connect the gtx 23 s suppression pin to any other compatible unit s suppression pin 337
• Power input requirements are listed in the following tables the power input pins accept 14 28 vdc refer to figure c 1 and c 2 for power interconnections aircraft power 1 and aircraft power 2 are diode ored to provide power redundancy 337
• Sink current is internally limited to 200 ua max for a grounded input 337
• Tis connect select is a momentary input when grounded it toggles whether tis a is in standby or operating 337
• 01115 01 g3x installation manual lru pinouts rev u page 22 71 338
• Arinc 429 input output 338
• For installations that enable ads b rs 232 input channel 2 should be connected to a gns 400w 500w series waas enabled unit or a gtn 6xx 7xx series unit this connection provides the gtx 23 with gps data for ads b the rs 232 output channel 2 is unused on the gtx 23 338
• Rs 232 input channel 1 is used to receive pressure altitude and control commands and to provide status tis a traffic and other data rs 232 output channel 1 provides unit status and tis data rs 232 channel 1 input and output are also used for software upgrades rs 232 port channel 1 on the gtx should be connected to the channel 1 rs 232 port on adahrs 1 338
• Rs 232 input output 338
• Serial data electrical characteristics 338
• The arinc 429 outputs conform to arinc 429 electrical specifications when loaded with up to five standard arinc 429 receivers arinc 429 out channel 1 is configured for low speed tis a data and arinc 429 out channel 2 is configured for high speed tis a data for a gns 4xx 5xx unit 338
• The rs 232 outputs conform to eia standard rs 232c with an output voltage swing of at least 5 v when driving a standard rs 232 load refer to figures in section 23 for the rs 232 serial data interconnect 338
• Core interconnect drawings w gsu 25 and or gad 29 339
• G3x w gsu 25 and or gad 29 interconnect drawings 339
• 01115 01 g3x installation manual g3x w gsu 25 and or gad 29 interconnect drawings rev u page 23 7 345
• Center off 2a center off 2a 345
• Dpdt momentary dpdt momentary 345
• Dual trim switches dual trim switches 345
• Figure 23 1 gsa 28 trim switch interconnect drawing 345
• Gsa 28 servo gsa 28 servo 345
• Single trim switch single trim switch 345
• External interconnect drawings w gsu 25 346
• Core interconnect drawings 362
• G3x w gsu 73 interconnect drawings 362
• External interconnect drawings w gsu 73 366
• G3x w gtr 20 interconnect drawings 376
• Notes for section 25 drawings 377
• Single gtr 20 interconnect drawings 378
• 01115 01 g3x installation manual g3x w gtr 20 interconnect drawings rev u page 25 7 382
• Can node length 0 meters maximum 0 meters maximum can node length 382
• Can node length 0 meters maximum can node length 0 meters maximum 382
• Dual gtr 20 interconnect drawings 382
• Figure 25 3 dual gtr 20 can bus interconnect drawing 382
• Garmin garmin 382
• Gtr 20 as com 1 gtr 20 as com 1 382
• Gtr 20 as com 2 gtr 20 as com 2 382
• 01115 01 g3x installation manual g3x w gtr 20 interconnect drawings rev u page 25 9 384
• Figure 25 4 j2001 connector layout 384
• J2001 as viewed looking at rear of unit 384
• J2001 connector layout 384
• Notes for section 26 drawings 385
• Sensor wiring examples 385
• Sensor wiring examples w gea 24 386
• 01115 01 g3x installation manual sensor wiring examples rev u page 26 4 388
• Figure 26 2 page 1 of 2 electrical and discrete input output examples w gea 24 388
• 01115 01 g3x installation manual sensor wiring examples rev u page 26 5 389
• Figure 26 2 page 2 of 2 electrical and discrete input output examples w gea 24 389
• Sensor wiring examples w gsu 73 391
• Lycoming continental sensor wiring examples 396
• Notes for section 27 drawings 396
• Gea 24 lycoming continental sensor drawings 397
• Gsu 73 lycoming continental sensor drawings 399
• 01115 01 g3x installation manual lycoming continental sensor wiring examples rev u page 27 5 400
• Figure 27 3 gsu 73 4 6 cylinder lycoming continental sensor wiring examples page 2 of 3 400
• Notes for section 28 drawings 402
• Rotax sensor wiring examples 402
• Gea 24 rotax sensor drawings 403
• Gsu 73 rotax sensor drawings 406
• 01115 01 g3x installation manual rotax sensor wiring examples rev u page 28 6 407
• Figure 28 3 gsu 73 rotax 912 914 sensor wiring examples page 2 of 2 407
• Ground ground 407
• Gsu 73 gsu 73 j732 j732 407
• Output output 407
• Rotax p n 965531 rotax p n 965531 407
• Supply voltage supply voltage 407
• 01115 01 g3x installation manual jabiru sensor wiring examples rev u page 29 1 408
• Figure 29 1 notes for jabiru sensor drawings for all section 29 drawings 408
• Jabiru sensor wiring examples 408
• Notes for section 29 drawings 408
• Gea 24 jabiru sensor drawings 409
• 01115 01 g3x installation manual jabiru sensor wiring examples rev u page 29 4 411
• 70 shunt 1 hi shunt 1 hi 411
• Battery contactor battery contactor 411
• Battery positive battery positive 411
• Blk ground pin a blk ground pin a 411
• Blu blu 411
• Figure 29 3 gsu 73 jabiru sensor wiring examples page 1 of 2 411
• Fuel press sensor fuel press sensor 411
• Grn output pin c grn output pin c 411
• Gsu 73 gsu 73 j732 j732 411
• Gsu 73 jabiru sensor drawings 411
• Manifold press hi manifold press hi 411
• Manifold press lo manifold press lo 411
• Ohm 005 ohm 411
• Red voltage in pin b red voltage in pin b 411
• Shunt 1 lo shunt 1 lo 411
• Wht wht wht wht 411
• 01115 01 g3x installation manual jabiru sensor wiring examples rev u page 29 5 412
• Figure 29 3 gsu 73 jabiru sensor wiring examples page 2 of 2 412
• Caution 413
• Gdu 37x configuration and post installation checkout 413
• Recommended test equipment 413
• Configuration mode 414
• Software loading procedure 414
• Caution 416
• Configuration pages 417
• 01115 01 g3x installation manual gdu 37x configuration and post installation checkout rev u page 30 9 421
• After mechanical and electrical installation of the gsu 25 gsu 73 ahrs and gmu 22 magnetometer have been completed prior to operation a set of post installation calibration procedures must be carried out 421
• Gsu 25 gsu 73 gmu 22 post installation calibration procedures 421
• Table 30 1 describes the calibration procedures 421
• Table 30 1 post installation calibration procedure summary 421
• The calibration procedures section 30 section 30 may require that certain status boxes on the gsu page configuration mode indicate a positive state green check marks before starting the procedure table 30 2 and table 30 3 list the status box requirements for each calibration procedure 421
• 01115 01 g3x installation manual gdu 37x configuration and post installation checkout rev u page 30 10 422
• A repeat of the pitch roll offset procedure procedure b requires a repeat of the magnetometer calibration procedure procedure d 422
• Any gmu 22 removal or replacement requires repeating the magnetometer calibration 422
• For each calibration procedure table 30 2 lists the lru s that require valid calibration data 422
• If removal and replacement of a gmu 22 unit is required after post installation calibration has been completed the gmu 22 mounting rack must not be moved if the mounting screws that secure the gsu 25 gsu 73 unit or the gmu 22 mounting rack are loosened for any reason post installation calibration procedure a b d and e must be repeated before the aircraft can be returned to service 422
• Table 30 2 data validity requirements for ahrs calibration procedures 422
• Table 30 3 configuration mode ahrs page status boxes 422
• Table 30 3 lists the type of valid calibration data required to be output by each lru for the calibration procedures listed in table 30 2 422
• The ahrs configuration page status boxes referred to in table 30 2 and table 30 3 are shown in the following figure 422
• Caution 429
• 01115 01 g3x installation manual gdu 37x configuration and post installation checkout rev u page 30 20 432
• Table 30 4 magnetometer interference test sequence example 432
• Caution 442
• Bank left bank right 452
• Nose down nose up 453
• Nose left nose right 454
• Warning 463
• Warning 467
• Below and should only be adjusted after studying the description to properly understand their effect on the yaw servo 469
• The yaw servo has additional advanced and expert level settings that can be adjusted to achieve the desired yaw damping performance these settings are detailed in 469
• Re verify proper trim movement in described in section 30 steps 6 7 8 471
• Warning 472
• 01115 01 g3x installation manual gdu 37x configuration and post installation checkout rev u page 30 62 474
• Detailed autopilot configuration options 474
• Figure 30 16 general autopilot configuration page 474
• General configuration page 474
• Table 30 5 general autopilot configuration settings 474
• The installer needs to make the following autopilot configuration selections when setting up the gsa 28 based autopilot system 474
• These selections are made in configuration mode using the ap config page 474
• 01115 01 g3x installation manual gdu 37x configuration and post installation checkout rev u page 30 63 475
• Roll servo configuration 475
• Table 30 6 roll servo autopilot configuration settings 475
• The installer needs to make the following roll servo configuration selections when setting up the gsa 28 based autopilot system these selections are made in configuration mode using the ap config page and the roll servo setup screen in the autopilot setup menu in normal mode 475
• 01115 01 g3x installation manual gdu 37x configuration and post installation checkout rev u page 30 64 476
• Figure 30 17 roll servo autopilot configuration page 476
• Table 30 6 roll servo autopilot configuration settings 476
• 01115 01 g3x installation manual gdu 37x configuration and post installation checkout rev u page 30 65 477
• Pitch servo configuration 477
• Table 30 7 pitch servo autopilot configuration settings 477
• The installer needs to make the following pitch servo configuration selections when setting up the gsa 28 based autopilot system these selections are made in configuration mode using the ap config page and the pitch servo setup screen in the autopilot setup menu in normal mode 477
• 01115 01 g3x installation manual gdu 37x configuration and post installation checkout rev u page 30 66 478
• Figure 30 18 pitch servo autopilot configuration page 478
• Table 30 7 pitch servo autopilot configuration settings 478
• 01115 01 g3x installation manual gdu 37x configuration and post installation checkout rev u page 30 67 479
• Table 30 8 yaw damper autopilot configuration settings 479
• The installer needs to make the following yaw damper configuration selections when setting up the gsa 28 based yaw damper system these selections are made in configuration mode using the ap config page and the yaw damper setup screen in the autopilot setup menu in normal mode 479
• Yaw damper configuration 479
• 01115 01 g3x installation manual gdu 37x configuration and post installation checkout rev u page 30 68 480
• Figure 30 19 yaw damper autopilot configuration page 480
• Table 30 8 yaw damper autopilot configuration settings 480
• 01115 01 g3x installation manual gdu 37x configuration and post installation checkout rev u page 30 69 481
• Pitch gain configuration 481
• Table 30 9 pitch gain autopilot configuration settings 481
• The installer needs to make the following pitch gain configuration selections when setting up the gsa 28 based autopilot system these selections are made in configuration mode on the pfd under the ap tab and the pitch gain setup screen in the autopilot setup menu in normal mode 481
• 01115 01 g3x installation manual gdu 37x configuration and post installation checkout rev u page 30 70 482
• Figure 30 20 pitch gain autopilot configuration page 482
• Table 30 9 pitch gain autopilot configuration settings 482
• 01115 01 g3x installation manual gdu 37x configuration and post installation checkout rev u page 30 71 483
• Manual electric trim configuration 483
• Table 30 10 manual electric trim autopilot configuration settings 483
• The installer needs to make the following manual electric trim configuration selections when setting up the gsa 28 based autopilot system these selections are made in configuration mode on the pfd under the ap tab and the pitch gain setup screen in the autopilot setup menu in normal mode 483
• Warning 485
• Automatic backlight control window settings apply only to auto setting 507
• Display backlight configuration window 507
• Garmin database updates 545
• Siriusxm activation instructions gdu 375 only 549
• External interface configuration garmin units only 550
• Checklist editor 553
• Gdu splash screen 553
• Caution 554
• Gdu 45x 46x configuration and post installation checkout 554
• Configuration mode 555
• Recommended test equipment 555
• Software loading procedure 556
• Caution 557
• Configuration pages 558
• 01115 01 g3x installation manual gdu 45x 46x configuration and post install checkout rev u page 31 9 562
• After mechanical and electrical installation of the gsu 25 gsu 73 adahrs and gmu 22 magnetometer have been completed prior to operation a set of post installation calibration procedures must be carried out 562
• Gsu 25 gsu 73 gmu 22 post installation calibration procedures 562
• Table 31 1 describes the calibration procedures 562
• Table 31 1 post installation calibration procedure summary 562
• Table 31 2 and table 31 3 list the status box requirements for each calibration procedure 562
• The calibration procedures 31 31 may require that certain status boxes on the gsu page configuration mode indicate a positive state green check marks before starting the procedure 562
• 01115 01 g3x installation manual gdu 45x 46x configuration and post install checkout rev u page 31 10 563
• A repeat of the pitch roll offset procedure procedure b requires a repeat of the magnetometer calibration procedure procedure d 563
• Any gmu 22 removal or replacement requires repeating the magnetometer calibration 563
• Figure 31 3 adahrs status boxes 563
• For each calibration procedure table 31 2 lists the lrus that require valid calibration data 563
• If removal and replacement of a gmu 22 unit is required after post installation calibration has been completed the gmu 22 mounting rack must not be moved if the mounting screws that secure the gsu 25 gsu 73 unit or the gmu 22 mounting rack are loosened for any reason post installation calibration procedure a b d and e must be repeated before the aircraft can be returned to service 563
• Table 31 2 data validity requirements for adahrs calibration procedures 563
• Table 31 3 configuration mode adahrs calibration page status boxes 563
• Table 31 3 lists the type of valid calibration data required to be output by each lru for the calibration procedures listed in table 31 2 563
• The adahrs calibration page status boxes referred to in table 31 2 and table 31 3 are shown in figure 31 3 563
• Caution 569
• 01115 01 g3x installation manual gdu 45x 46x configuration and post install checkout rev u page 31 19 572
• Table 31 4 magnetometer interference test sequence example 572
• Caution 580
• Warning 584
• Bank left bank right 611
• Nose down nose up 612
• Nose left nose right 613
• Warning 622
• Warning 628
• Below and should only be adjusted after studying the description to properly understand their effect on the yaw servo 631
• The yaw servo has additional advanced and expert level settings that can be adjusted to achieve the desired yaw damping performance these settings are detailed in 631
• Re verify proper trim movement in described in section 31 steps 6 7 8 633
• Warning 634
• 01115 01 g3x installation manual gdu 45x 46x configuration and post install checkout rev u page 31 83 636
• Detailed autopilot configuration options 636
• Figure 31 25 general autopilot configuration page 636
• General configuration page 636
• Table 31 5 general autopilot configuration settings 636
• The installer needs to make the following autopilot configuration selections when setting up the gsa 28 based autopilot system 636
• These selections are made in configuration mode using the ap config page 636
• 01115 01 g3x installation manual gdu 45x 46x configuration and post install checkout rev u page 31 84 637
• Roll servo configuration 637
• Table 31 6 roll servo autopilot configuration settings 637
• The installer needs to make the following roll servo configuration selections when setting up the gsa 28 based autopilot system these selections are made in configuration mode using the ap config page and the roll servo setup screen in the autopilot setup menu in normal mode 637
• 01115 01 g3x installation manual gdu 45x 46x configuration and post install checkout rev u page 31 85 638
• Table 31 6 roll servo autopilot configuration settings 638
• 01115 01 g3x installation manual gdu 45x 46x configuration and post install checkout rev u page 31 87 640
• Pitch servo configuration 640
• Table 31 7 pitch servo autopilot configuration settings 640
• The installer needs to make the following pitch servo configuration selections when setting up the gsa 28 based autopilot system these selections are made in configuration mode using the ap config page and the pitch servo setup screen in the autopilot setup menu in normal mode 640
• 01115 01 g3x installation manual gdu 45x 46x configuration and post install checkout rev u page 31 88 641
• Table 31 7 pitch servo autopilot configuration settings 641
• 01115 01 g3x installation manual gdu 45x 46x configuration and post install checkout rev u page 31 90 643
• Table 31 8 yaw damper autopilot configuration settings 643
• The installer needs to make the following yaw damper configuration selections when setting up the gsa 28 based yaw damper system these selections are made in configuration mode using the ap config page and the yaw damper setup screen in the autopilot setup menu in normal mode 643
• Yaw damper configuration 643
• 01115 01 g3x installation manual gdu 45x 46x configuration and post install checkout rev u page 31 91 644
• Table 31 8 yaw damper autopilot configuration settings 644
• 01115 01 g3x installation manual gdu 45x 46x configuration and post install checkout rev u page 31 93 646
• Pitch gain configuration 646
• Table 31 9 pitch gain autopilot configuration settings 646
• The installer needs to make the following pitch gain configuration selections when setting up the gsa 28 based autopilot system these selections are made in configuration mode on the pfd under the ap tab and the pitch gain setup screen in the autopilot setup menu in normal mode 646
• 01115 01 g3x installation manual gdu 45x 46x configuration and post install checkout rev u page 31 94 647
• Figure 31 29 pitch gain autopilot configuration page 647
• Table 31 9 pitch gain autopilot configuration settings 647
• 01115 01 g3x installation manual gdu 45x 46x configuration and post install checkout rev u page 31 95 648
• Figure 31 30 manual electric trim autopilot configuration page 648
• Manual electric trim configuration the installer needs to make the following manual electric trim configuration selections when setting up the gsa 28 based autopilot system these selections are made in configuration mode on the pfd under the ap tab and the pitch gain setup screen in the autopilot setup menu in normal mode 648
• Table 31 10 manual electric trim autopilot configuration settings 648
• Garmin database updates 708
• Siriusxm activation instructions gdu 455 465 only 711
• External interface configuration garmin units only 712
• Checklist editor 715
• General troubleshooting 716
• Troubleshooting 716
• Gdu 37x 46x 717
• Air data troubleshooting 718
• Engine indication troubleshooting 719
• Adahrs troubleshooting 720
• Post installation calibration procedures 722
• Gsu 73 data logging 723
• Inspections continued airworthiness maintenance 726
• Maintenance 726
• Return to service information 728
• A introduction 731
• Appendix a airframe specific installation guidance 731
• A van s aircraft 732
• A lancair aircraft 734
• When routing the gmu 22 wiring with other power sources ensure each power source contains an adequate return ground it is important to route the return ground with the power wire to help cancel stray magnetic fields route nav light wiring as far as practical away from the gmu 22 736
• The gmu 22 installation rack 115 00481 00 should be installed parallel to the mount ing surface of the magnetometer bracket 115 01017 00 to ensure the finished gmu 22 installation will be in alignment with the lancair es es p aircraft heading the gmu 22 installation rack 115 00481 00 should be installed with the forward arrow marked on the ring indicating a direction parallel with the outboard wing rib which acts as a reference for the aircraft s forward direction 737
• 00481 00 gmu 22 installation rack 747
• 01115 01 g3x installation manual airframe specific installation guidance rev u page a 17 747
• Assemble the gmu 22 installation rack to the magnetometer shelf as shown in figure a 27 747
• Figure a 26 magnetometer shelf with hole pattern for gmu 22 installation rack 747
• Figure a 27 assembly of gmu 22 installation rack to magnetometer shelf 747
• Magnetometer shelf ref 747
• X 6 32 stainless nuts ms21083c06 or equivalent 747
• X 6 32 stainless screws 100 countersunk ms24693c or equivalent 747
• X an960c6 washers 747
• Appendix b rs 232 text output format 749
• B electrical interface 749
• B general message output format 749
• B message output selection 749
• 01115 01 g3x installation manual rs 232 text output format rev u page b 2 750
• B attitude air data message format 750
• Field name offset width units notes min max 750
• Table b 1 attitude air data message format 750
• The attitude air data message is transmitted approximately 10 times per second 750
• 01115 01 g3x installation manual rs 232 text output format rev u page b 3 751
• B engine data message format 751
• Field name offset width units notes min max 751
• Table b 2 engine data message format 751
• The engine data message is transmitted approximately 5 times per second 751
• 01115 01 g3x installation manual rs 232 text output format rev u page b 4 752
• Field name offset width units notes min max 752
• Table b 2 engine data message format 752
• 01115 01 g3x installation manual rs 232 text output format rev u page b 5 753
• B gps data message format 753
• Field name offset width units notes min max 753
• Table b 3 gps data message format 753
• The gps data message is transmitted once per second 753
• 01115 01 g3x installation manual rs 232 text output format rev u page b 6 754
• Field name offset width units notes min max 754
• For more information on the gps data message see http www8 garmin com support text_out html 754
• Table b 3 gps data message format 754
• Appendix c lru performance specifications licensing compliance 755
• C gad 29 755
• C gap 26 755
• C gdu 37x 755
• C gdu 45x 46x 756
• C gea 24 756
• C gmc 305 307 756
• 01115 01 g3x installation manual lru performance specs licensing compliance rev u page c 3 757
• C environmental specifications 757
• C gmu 22 757
• C gsa 28 757
• C gsu 25 757
• Table c 4 gmu 22 environmental specifications 757
• Table c 4 lists general environmental specifications 757
• Table c 5 gsa 28 environmental specifications 757
• Table c 5 lists general environmental specifications 757
• Table c 6 gsu 25 environmental specifications 757
• Table c 6 lists general environmental specifications for the gsu 25 table c 7 lists general environmental specifications for the gsu 25b 757
• C 0 gsu 73 759
• 01115 01 g3x installation manual lru performance specs licensing compliance rev u page c 6 760
• C 1 gtp 59 760
• C 1 tso etso compliance 760
• C 1 tso etso deviations 760
• Table c 10 tso etso deviations for the gtp 59 760
• Table c 9 applicable tso etsos for the gtp 59 760
• The following deviations have been requested and granted for the gtp 59 760
• The following table provides a list of applicable tso etsos for the gtp 59 760
• C 2 gtr 20 200 761

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Garmin Experimental G3X EFIS / EMS / GPS System

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The G3X GDU 460 is perfection in a small box. It is brilliantly designed, intuitive to use and can be configured to do just about anything. I can turn it on and look at it all day. It is so much easier to use than all of the old school avionics I grew up using. We are very fortunate that Garmin created a panel display for retrofit. The programming interface is easy to use as well. The only gripe would be that it is designed to work in the Garmin ecosystem. Most of their communication protocols are proprietary. Integrating non-Garmin systems is doable, but they do not work seamlessly with the G3X. It is best to build a system with primarily Garmin components to get the best overall integrated experience out of the G3X system.

GARMIN G3X GDU 460 10.6" LANDSCAPE TOUCH DISPLAY

Best com radio deal from Garmin put in my 150L and works great.

GARMIN GTR 200 COM RADIO 10 WATT 25 KHZ SPACING NON TSO WITH INSTALLATION KIT

Garmin quality speaks for itself.

work great, for the price of an artificial horizon I get a EFIS.

GARMIN G5 EFIS EXPERIMENTAL UNIT ONLY

G5s are great devices and simple to install.

Prompt delivery.

GARMIN G3X GDU 460 465 10" SCREEN INSTALL KIT

I ordered this as part of an upgrade to a Garmin G3X system for my experimental. My plane has had a PS Engineering 8000B, and I expected to have to rewire everything for the GMA245. Much to my delight and surprise, the 245 is both tray and connector compatible, and it worked perfectly just sliding it into the old panels tray. Only had to add two CAN bus wires to the existing wiring to make it part of the G3X architecture. Nice job, Garmin!

GARMIN GMA 245 AUDIO PANEL 6 PLACE STEREO NON TSO

Good service!

BE ADVSED !!! The Garmin G5 unit is exactly what I wanted and needed to to replace a failed standby HSI. It wasn’t clear that the standard mounting hardware was not included wit the G5 unit. It was not listed in the accessories section of the ad, which displays alternate mounting hardware. This resulted in project delay and additional freight charge. Be advised that you need to order the mounting hardware when ordering the G5.

As others have noted, the G5 needs an installation kit since it uses a nonstandard bracket to connect the device to the existing holes of a 3-1/4 cutout. Once installed and plumbed to the pitot static lines, it works great. I dont have a G3X system but do have a GTN650xi, and running a serial line from the 650 to the G5 gives it a full featured HSI display with nav data that can be toggled with the PFD display. So, a nice two-fer surprise when I was mostly interested in having a backup attitude display with its own solid state AHRS.

My uAvionix AV-30-E failed after one year and a half. The LCD panel fade out, pressure altitude skipping values, OAT stop working... Got the G5, quick and easy to install, better features and better price as well. Solid unit. Barometric Altitude adjustment is right there at your finger tips. You have to press nothing before adjusting BAlt, just turn the solid, smooth clicks knob. Awesome feature! Awesome unit. From now on just Garmin on my panel.

Way to pricy and when I installed it I immediately got a Critical Battery Fault message and my unit shut down. Garmin support told me to get a new one. Aircraft Spruce told me that my G5 just needed an update. Once I did that, my unit was fine. Not sure whats wrong with Garmin, but Aircraft Spruce was great and very helpful.

GARMIN G5 BACK UP BATTERY

GARMIN G3X GDU 450 7" LANDSCAPE TOUCH DISPLAY

I love these radios. Built in intercom, good sound. Just a good radio.

GARMIN G3X GEA 24 EIS ENGINE MODULE CONNECTOR KIT

GARMIN GMC 507 AUTOPILOT MODE CONTROLLER EXPERIMENTAL

GARMIN G3X GSA 28 SERVO

GARMIN G3X GSA 28 AND GDL 50R 51R 52R CONNECTOR KIT

GARMIN GMC 507 INSTALL KIT

GARMIN G3X GEA 24B ENGINE INTERFACE UNIT ONLY 010-02770-00

GARMIN GAD 29C ARINC 429 INTERFACE

GARMIN G3X GDU 450 455 7" SCREEN INSTALL KIT

GARMIN G3X GDU 470 7" PORTRAIT TOUCH DISPLAY

GARMIN GTR 20 REMOTE COM RADIO FOR G3X TOUCH ONLY

GARMIN GAD 29 CONNECTOR KIT

GARMIN G3X LRU STANDARD KIT GSU 25C GMU 11 GTP 59 AND CONFIG MOD

GARMIN GSU C/D CONNECTOR KIT K10-00181-00

GARMIN GMU 11 CONNECTOR KIT

Great product with excellent quality...

This is a most when you need redundancy...

Great product as always very reliable. Great compatibility easy installation and operation with great features.

Battery worked fine. To install you need an Allen wrench the same size as your battery screws. This winch also fits the Allen screw in the center bottom hole on the G-5. The one screw holds the G-5 in the panel. Slide it out and replace the battery. Very easy.

The part is as expected, good quality

GARMIN G3X AOA GAP 26 HEATED AND REGULATED PITOT TUBE 14V

Great service and product

GARMIN GMC 507 AUTOPILOT MODE CONTROLLER INSTALL RACK

Not only does it melt accumulated ice, it makes a great hand warmer.

GARMIN G3X AOA GAP 26 HEATED PITOT TUBE 14V

GARMIN GMU 11 MAGNETOMETER FOR G3X / G5 010-01788-00

CAUTION! Excelent option for cheap, easy, and quick glass upgrade, BUT unit only comes with NOTHING! You MUST purchase an installation kit with it just to mount it and turn it on. THIS SHOULD BE MADE CLEARER UPFRONT! Other that that, love it.

just simply the best! cheap and reliably

This product was ordered to complete an installation for a customer and it arrived on time as promised. The quality is standard Garmin, no problems.

Good product and good service

Expensive but supposed to be better for backseat passengers...Nice part

GARMIN GSA 28 MOUNTING KIT RV 10 YAW DAMPER

Excellent part

GARMIN GSA 28 SERVO INSTALL KIT FOR RV 10 PITCH

I do not like anything made by Garmin. They do not know what intuitive user interface is. Period. Also their technical support is terrible. I purchased this radio for lack of options. The ones that I wanted to buy were out of stock. Well, here I was purchasing a Garmin product for the first time. I have to admit, the radio impressed me very well. What I really like about the whole thing is the installation manual. Its really well written. It explains every single step of the way on how to install it. Seriously, a kid can do it just reading the manual. After installation I call Ground here at KCHD and the radio was working great. Clear and loud. One of the high points of this radio for me is the display. I can see the big number even when the sun is hitting the panel directly. Very good radio. I cannot say anything about lasting. Time will tell. Will see.

A must have when one buys the G5

GARMIN GSA 28 SERVO INSTALL KIT FOR RV 4 8 PITCH

I received the next day thank you just what I ordered

So far, we purchased 2 dead ones.

Everything was as expected, nicely put together kit.

GARMIN GSA 28 SERVO INSTALL KIT FOR RV 7 8 10 ROLL

Comprehensive kit, arrived quickly.

GARMIN GSA 28 SERVO INSTALL KIT FOR RV 6 7 9 PITCH

Great radio

I ordered this to replace a 14 year old Garmin SL40 that was functioning as Com 2 but had fading reception and an inop volume control. The only connections the GTR200 needed were the external antenna, power, ground, and five wires going to the audio panel. Fabricating a new wiring harness was made relatively simple by the fact that during the original build, I had positioned in-line connectors (DB9 or DB25 computer connectors, to be exact) in between all avionics in the stack and all other units. So it was only necessary to terminate the new wiring in a DB9 connector that matched the pinouts of the original wiring. A bonus of having the new unit is that it has a 10 watt transmitter vs. 8 watts for the old one, and a much more informative digital display e.g., when monitoring two frequencies at once, it shows which one is receiving a transmission at the moment. A minor annoyance was that Garmin radio trays apparently now are just a smidge wider than they used to be. The standard 6.25 inch width has now become 6.30” – just enough that new trays won’t slide easily into stacks of older radios without some creativity with a flat file to make the opening a bit wider. Luckily the height of the GTR200 is the same as the SL40 (even though the Garmin specs say it isn’t!) so neither the GNS480 navigator above the radio or the GTX330ES transponder below it had to be moved. Oh, and the new unit works great. : )

GARMIN GSA 28 SERVO INSTALL KIT GENERIC WITH MOUNT BRACKET

Works alright

Cannot leave review of this product as I have not installed it yet.

The GSA-28 is a good servo, I hope. But I was not lucky - she did not work a single day and broke down. The PFD started showing the message Servo Hardware Fault a year after installation, although I did not turn on the autopilot even once. And one more thing: GSA-28s have insufficient power, for example, the Pitch-servo cannot raise the elevator of stabilizer on my Cessna-182 when its on th ground. I have ordered one new and got it during 10 days - its very good!

Excellent product. Easy to install.

This is a high-quality connector kit. It was a better deal to buy this than two separate connector kits.

Well built but too expensive for what you get. Unfortunately it is the only option unless you want to build it yourself

The only reason I didn’t give this probe 5 stars was that I had to wait over 2 weeks for it to arrive...

First battery I got was dead out of the box and would not charge. I had to pay for shipping to return it, which was annoying. 2nd one is working fine so far...

Aircraft Spruce gets 5 stars, Garmin 2. The batteries are very expensive and unreliable. The last one failed after 2 years of light use. Garmin needs to find somebody else to make their batteries. To be fair, the battery installed easily, worked properly and I received what I expected. Unfortunately, it may not last very long. At least they are readily available and easy to replace.

This Garmin product has been quite the disappointment. I have 3 G-5’s installed and two batteries have already become unserviceable and needed replacement at a cost of over $400 USD. After installing the two “new” batteries neither of them will attain a 100% charge and continue to discharge at a very high rate requiring me to regularly charge the batteries while connected to an external charger. All three G-5’s have the latest firmware update too. The strange thing is that the original battery installed in one of the G-5’s continues to function as advertised. I would not purchase another one of these batteries until Garmin addresses this problem which they are already aware of.

Still have yet to receive this portion of my order. After two weeks on the phone with support no one seems to care to make this right.

this radio will not integrate with 2 radio panel making the built in intercom useless.

Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

You would have to run the GDU 370/375 completely separate with its own GPS signal and rewire the G3X touch to be the main display with your existing LRUs.

Yes, you would still need to purchase the connector kit in addition to the harness.

You would need the GDU 460/465 Install Kit (11-12646), GSU 25 Connector Kit (11-11433), and the GMU 22 Install Kit (11-12213).

For the VFR harness all of the components including the engine leads are included minus connection to an auto pilot and audio panel (which have there own part numbers on our list). When ordering a G3X system, we will send you a worksheet to fill out for your unique setup.

As each G3X harness we create is unique, there is a form that you would fill out which will includes the features you want including and pricing.

11-11433 is the GSU 25 connector kit by itself. Part # 11-15303 is the GSU 25 connector kit with a custom harness.

The non-touch screens are no longer available. We only offer the touch screen G3X now.

You will need to purchase a GMA 245 audio panel or 245R remote audio panel to support a 4 place aircraft.

Per the manual, yes, the G3x can display twin engine data.

Included: (2) 10" GDU 460, ADAHRS GSU 25, Magnetometer GMU 22, GEA 24, Temperature Probe GTP 59, Config Mod, w/sockets, Jackscrew. Connector kits are available but sold separately.

The dimensions are 6.01 inch x 7.82 inch x 3.68 inch

(6 ea) CHT Type K Thermocouple, 3/8-24 Bayonet (6 ea) EGT Type K Thermocouple, Bayonet Oil Temperature, RTD, 5/8-18 UNG-3A Fuel Flow, 1/4" Female NPT Ammeter, Shunt, +/-50 mV, 100 amps Oil Pressure, 150 PSIG, 1/8-27 NPT Manifold Pressure, 30 PSIA, 1/8-27 NPT

The heated, regulated version of the GAP 26 (010-010704-20) has a small box with the regulating circuitry that is mounted near the probe. This version of the GAP 26 probe is also equipped with an internal temperature sensor which the regulating circuit uses to only supply as much current as the probe needs to remain ice free. This current, of course, varies with the operating conditions.