Garmin G3X™ for Experimental Aircraft Installation guide

190-01115-01 July, 2019 Revision AK

G3X/G3X Touch

Installation Manual

190-01115-01 G3X/G3X Touch Installation Manual

Rev. AK Page A

Garmin Ltd. or its subsidiaries

Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted,

disseminated, downloaded or stored in any storage medium, for any purpose without the express prior

written consent of 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 to print

one copy of this manual or of any revision hereto, provided that such electronic or printed copy of this

manual or revision must contain the complete text of this copyright notice and provided further that any

unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited.

Garmin International, Inc.

1200 E. 151st Street

Olathe, KS 66062 USA

Garmin (Europe) Ltd.

Liberty House, Hounsdown Business Park

Southampton, Hampshire SO40 9LR U.K.

Garmin aviation product support information can be found at www.flygarmin.com

.

RECORD OF REVISIONS

Revision

Date

Description

AD 12/18/17 Corrected Figures 11-2 and 11-3

AE 03/07/18 Added GMC 507 info

AF 07/16/18 Added EIS Complete Data Message Format info in Appdx C

AG 11/20/18 Updated per latest software version, various updates

AH 01/25/19 Updated per latest software version, various updates

AJ 04/29/19 Update per latest software version, various updates

AK 07/18/19 Updated info in GDU 4XX configuration Section 35, various updates

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INFORMATION SUBJECT TO EXPORT CONTROL LAWS

This document may contain information which is subject to the Export Administration Regulations

(“EAR”) issued by the United States Department of Commerce (15 CFR, Chapter VII Subchapter C) and

which may not be exported, released or disclosed to foreign nationals inside or outside the United States

without first obtaining an export license. The preceding statement is required to be included on any and all

reproductions in whole or in part of this manual.

CURRENT REVISION DESCRIPTION

Revision Page Number(s) Section Number Description of Change

AK

27-6 27.1 Updated Figure 27-1.6

27-22 27.2 Updated Figure 27-2.5

27-33, 27-34 27.2

Updated configuration guidance in Figure 27-2.15 and

Figure 27-2.16

35-54–35-67 35.4.11.3 Updated screenshots and text in procedure

35-86–35-93 35.4.11.8 Updated Detailed Autopilot Configuration Page Options info

35-100–35-108 35.4.14 Added Trim Configuration Page section

35-109 35.4.14.5 Updated screenshot in Trim System Setup procedure

35-196 35.7.2 Added GNX 375 configuration mode info

35-196 35.7.3 Added GPS 175 configuration mode info

35-199, 35-200 35.8 Added flight plan crossfill info

A-1 A.2 Corrected reference to Trim Configuration page

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DEFINITIONS OF WARNINGS, CAUTIONS, AND NOTES

WARNING

This product, its packaging, and its components contain chemicals known to the State of

California to cause cancer, birth defects, or reproductive harm. This Notice is being

provided in accordance with California's Proposition 65. If you have any questions or

would like additional information, please refer to our website at www.garmin.com/prop65

.

NOTE

The Garmin G3X system includes non-TSO certified products that 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.

NOTE

Unless otherwise noted all installation guidance, requirements, and instructions apply to

one-display, two-display, three-display, and four-display G3X systems.

NOTE

References to the GDU 37X throughout this manual apply equally to the GDU 370 and

GDU 375 except where specifically noted.

NOTE

References to the GDU 45X throughout this manual apply equally to the GDU 450 and

GDU 455 except where specifically noted.

NOTE

References to the GDU 46X throughout this manual apply equally to the GDU 460 and

GDU 465 except where specifically noted.

NOTE

References to the GDU 4XX throughout this manual apply equally to the GDU 45X,

GDU 46X, and GDU 47X except where specifically noted.

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NOTE

References to the GMC Mode Controller throughout this manual apply equally to the

GMC 305, GMC 307, and GMC 507 except where specifically noted.

NOTE

References to the GSU 25 throughout this manual apply equally to the GSU 25B,

GSU 25C, and GSU 25D except where specifically noted.

NOTE

The term LRU, as used throughout this manual is an abbreviation for Line Replaceable

Unit. LRU is used generically in aviation for a product (such as a GDU 37X or GTP 59)

that can be readily “swapped out” (usually as a single component) for troubleshooting/

repair.

NOTE

All GMU 22 information in this Installation Manual also applies to the GMU 44. The

GMU 44 had previously been used as the G3X magnetometer but has been replaced by the

GMU 22.

NOTE

Connector references JXXX(X) and PXXX(X) are used throughout this document. 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 4XX connectors on the LRU are designated as P4X0X.

NOTE

The GDU 37X/4XX products contain a lithium battery that must be recycled or disposed

by professional services according to applicable governing laws. Only Garmin-authorized

service facilities are permitted to perform maintenance on this product.

NOTE

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG,

Inc. and any use of such marks by Garmin is under license.

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SOFTWARE LICENSE AGREEMENT

BY USING THE DEVICE, COMPONENT OR SYSTEM MANUFACTURED OR SOLD BY GARMIN

(“THE GARMIN PRODUCT”), YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS

OF THE FOLLOWING SOFTWARE LICENSE AGREEMENT. PLEASE READ THIS AGREEMENT

CAREFULLY. Garmin Ltd. and its subsidiaries (“Garmin”) grants you a limited license to use the

software embedded in the Garmin Product (the “Software”) in binary executable form in the normal

operation of the Garmin Product. Title, ownership rights, and intellectual property rights in and to the

Software remain with Garmin and/or its third-party providers. You acknowledge that the Software is the

property of Garmin and/or its third-party providers and is protected under the United States of America

copyright laws and international copyright treaties. You further acknowledge that the structure,

organization, and code of the Software are valuable trade secrets of Garmin and/or its third-party providers

and that the Software in source code form remains a valuable trade secret of Garmin and/or its third-party

providers. You agree not to reproduce, decompile, disassemble, modify, reverse assemble, reverse

engineer, or reduce to human readable form the Software or any part thereof or create any derivative works

based on the Software. You agree not to export or re-export the Software to any country in violation of the

export control laws of the United States of America.

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TABLE OF CONTENTS

Section 1 Inventory of Materials .....................................................................1-1

1.1 Unpacking Unit................................................................................................................ 1-1

1.2 Required Garmin Equipment ........................................................................................... 1-1

1.3 Optional Garmin Equipment............................................................................................ 1-2

1.4 Optional Garmin LRUs.................................................................................................... 1-4

1.5 Required non-Garmin Equipment.................................................................................... 1-6

1.6 Optional Garmin Equipment (non-LRU)......................................................................... 1-8

1.7 Optional non-Garmin Equipment .................................................................................... 1-8

1.8 Optional 3rd Party Sensors/LRUs.................................................................................... 1-8

1.9 Garmin Software and Documents.................................................................................... 1-8

Section 2 Installation Preparation ..................................................................2-1

2.1 System Overview............................................................................................................. 2-1

2.2 Electrical Considerations ............................................................................................... 2-12

2.3 Wiring/Cabling Considerations ..................................................................................... 2-15

2.4 Mechanical Considerations............................................................................................ 2-24

2.5 LRU/Sensor Installation Information ............................................................................ 2-27

Section 3 GAD 27 (Flaps/Lights/Trim Controller) Installation ...................3-1

3.1 Equipment Description .................................................................................................... 3-1

3.2 Equipment Available ....................................................................................................... 3-3

3.3 General Specifications ..................................................................................................... 3-3

3.4 Mounting Requirements .................................................................................................. 3-3

3.5 Unit Installation ............................................................................................................... 3-3

3.6 Outline and Installation Drawings ................................................................................... 3-4

Section 4 GAD 29/29B (ARINC 429 Adapter) Installation ..........................4-1

4.1 Equipment Description .................................................................................................... 4-1

4.2 Equipment Available ....................................................................................................... 4-2

4.3 General Specifications ..................................................................................................... 4-2

4.4 Mounting Requirements .................................................................................................. 4-2

4.5 Unit Installation ............................................................................................................... 4-2

4.6 Outline and Installation Drawings ................................................................................... 4-3

Section 5 GAP 26 (Pitot/AOA Probe) Installation.........................................5-1

5.1 Equipment Description .................................................................................................... 5-1

5.2 Equipment Available ....................................................................................................... 5-2

5.3 Required Equipment ........................................................................................................ 5-2

5.4 General Specifications ..................................................................................................... 5-2

5.5 Unit Installation ............................................................................................................... 5-2

5.6 Outline and Installation Drawings ................................................................................... 5-7

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Section 6 GDU 37X (Display Unit) Installation .............................................6-1

6.1 Equipment Description .................................................................................................... 6-1

6.2 General Specifications ..................................................................................................... 6-2

6.3 Installation Information ................................................................................................... 6-2

6.4 Unit Installation ............................................................................................................... 6-4

6.5 Antennas .......................................................................................................................... 6-4

6.6 Mounting Requirements .................................................................................................. 6-4

6.7 Outline and Installation Drawings ................................................................................... 6-6

Section 7 GDU 45X (Display Unit) Installation .............................................7-1

7.1 Equipment Description .................................................................................................... 7-1

7.2 General Specifications ..................................................................................................... 7-2

7.3 Installation Information ................................................................................................... 7-2

7.4 Unit Installation ............................................................................................................... 7-3

7.5 Antennas .......................................................................................................................... 7-3

7.6 Mounting Requirements .................................................................................................. 7-3

7.7 Outline and Installation Drawings ................................................................................... 7-4

Section 8 GDU 46X (Display Unit) Installation .............................................8-1

8.1 Equipment Description .................................................................................................... 8-1

8.2 General Specifications ..................................................................................................... 8-2

8.3 Installation Information ................................................................................................... 8-2

8.4 Unit Installation ............................................................................................................... 8-3

8.5 Antennas .......................................................................................................................... 8-3

8.6 Mounting Requirements .................................................................................................. 8-3

8.7 Outline and Installation Drawings ................................................................................... 8-4

Section 9 GDU 470 (Display Unit) Installation ..............................................9-1

9.1 Equipment Description .................................................................................................... 9-1

9.2 General Specifications ..................................................................................................... 9-2

9.3 Installation Information ................................................................................................... 9-3

9.4 Unit Installation ............................................................................................................... 9-4

9.5 Antennas .......................................................................................................................... 9-4

9.6 Mounting Requirements .................................................................................................. 9-4

9.7 Outline and Installation Drawings ................................................................................... 9-5

Section 10 GEA 24 (EIS Interface) Installation.............................................10-1

10.1 Equipment Description ................................................................................................ 10-1

10.2 Equipment Available ................................................................................................... 10-2

10.3 General Specifications ................................................................................................. 10-3

10.4 Unit Installation ........................................................................................................... 10-3

10.5 Mounting Requirements .............................................................................................. 10-3

10.6 Outline and Installation Drawings ............................................................................... 10-4

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Section 11 GI 260 (AOA Indicator) Installation ............................................11-1

11.1 Equipment Description ................................................................................................ 11-1

11.2 Equipment Available ................................................................................................... 11-1

11.3 General Specifications ................................................................................................. 11-2

11.4 Unit Installation ........................................................................................................... 11-2

11.5 Unit Calibration ........................................................................................................... 11-2

11.6 Unit Operation ............................................................................................................. 11-2

11.7 Outline and Installation Drawings ............................................................................... 11-3

Section 12 GMC 305 (AFCS Mode Controller) Installation ........................12-1

12.1 Equipment Description ................................................................................................ 12-1

12.2 Equipment Available ................................................................................................... 12-1

12.3 General Specifications ................................................................................................. 12-2

12.4 Mounting and Wiring Requirements ........................................................................... 12-2

12.5 Outline and Installation Drawings ............................................................................... 12-4

Section 13 GMC 307 (AFCS Mode Controller) Installation ........................13-1

13.1 Equipment Description ................................................................................................ 13-1

13.2 Equipment Available ................................................................................................... 13-1

13.3 General Specifications ................................................................................................. 13-2

13.4 Mounting and Wiring Requirements ........................................................................... 13-2

13.5 Outline and Installation Drawings ............................................................................... 13-4

Section 14 GMC 507 (AFCS Mode Controller) Installation ........................14-1

14.1 Equipment Description ................................................................................................ 14-1

14.2 General Specifications ................................................................................................. 14-2

14.3 Mounting and Wiring Requirements ........................................................................... 14-2

14.4 Outline and Installation Drawings ............................................................................... 14-4

Section 15 GMU 11 (Magnetometer) Installation..........................................15-1

15.1 Equipment Description ................................................................................................ 15-1

15.2 General Specifications ................................................................................................. 15-1

15.3 Equipment Available ................................................................................................... 15-2

15.4 Unit Installation ........................................................................................................... 15-2

15.5 Outline and Installation Drawings ............................................................................... 15-5

Section 16 GMU 22 (Magnetometer) Installation..........................................16-1

16.1 Equipment Description ................................................................................................ 16-1

16.2 General Specifications ................................................................................................. 16-1

16.3 Equipment Available ................................................................................................... 16-2

16.4 Unit Installation ........................................................................................................... 16-2

16.5 Outline and Installation Drawings ............................................................................... 16-6

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Section 17 GPS 20A (WAAS GPS Position Source) Installation .................17-1

17.1 Equipment Description ................................................................................................ 17-1

17.2 Statement of Compliance (per AC 90-114A CHG1)................................................... 17-2

17.3 Equipment Available ................................................................................................... 17-2

17.4 General Specifications ................................................................................................. 17-3

17.5 Mounting Requirements .............................................................................................. 17-3

17.6 Unit Installation ........................................................................................................... 17-3

17.7 Antennas ...................................................................................................................... 17-3

17.8 Antenna Cable Requirements ...................................................................................... 17-3

17.9 Outline and Installation Drawings ............................................................................... 17-4

Section 18 GSA 28 (Autopilot Servo) Installation .........................................18-1

18.1 Equipment Description ................................................................................................ 18-1

18.2 Equipment Available ................................................................................................... 18-2

18.3 General Specifications ................................................................................................ 18-2

18.4 Required Equipment .................................................................................................... 18-4

18.5 Unit Installation ........................................................................................................... 18-5

18.6 Unit Wiring ................................................................................................................ 18-16

18.7 Outline and Installation Drawings ............................................................................. 18-16

Section 19 GSU 25/25B/25C/25D (AHRS/Air Data Sensor Unit) Installation ...

19-1

19.1 Equipment Description ................................................................................................ 19-1

19.2 General Specifications ................................................................................................. 19-3

19.3 Required Equipment .................................................................................................... 19-3

19.4 Unit Installation ........................................................................................................... 19-4

19.5 Outline and Installation Drawings ............................................................................... 19-8

Section 20 GSU 73 (Sensor Unit) Installation ................................................20-1

20.1 Equipment Description ................................................................................................ 20-1

20.2 General Specifications ................................................................................................ 20-2

20.3 Required Equipment .................................................................................................... 20-3

20.4 Unit Installation ........................................................................................................... 20-4

20.5 Outline and Installation Drawings ............................................................................... 20-7

Section 21 GTP 59 (Temperature Probe) Installation ..................................21-1

21.1 Equipment Description ................................................................................................ 21-1

21.2 General Specifications ................................................................................................. 21-2

21.3 Unit Installation ........................................................................................................... 21-2

21.4 GTP 59 Icing................................................................................................................ 21-4

21.5 Outline and Installation Drawings ............................................................................... 21-5

Section 22 GTR 20 (VHF Communications Radio) Installation ..................22-1

22.1 Equipment Description ................................................................................................ 22-1

22.2 Equipment Available ................................................................................................... 22-2

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22.3 General Specifications ................................................................................................. 22-3

22.4 Installation Considerations .......................................................................................... 22-4

22.5 Antenna Considerations............................................................................................... 22-5

22.6 Mounting Considerations............................................................................................. 22-7

22.7 Mounting, Wiring, and Power Checks......................................................................... 22-8

22.8 Outline and Installation Drawings ............................................................................. 22-10

Section 23 GPS/XM Antenna Installation......................................................23-1

23.1 Non-Garmin Antennas................................................................................................. 23-1

23.2 Garmin Antennas ......................................................................................................... 23-2

23.3 Antenna Mounting Considerations .............................................................................. 23-4

23.4 Teardrop Footprint Antenna Installation (GA 35, GA 55, and GA 56)....................... 23-9

23.5 ARINC 743 Footprint Antenna Installation (GA 36, GA 37, GA 55A, GA 57X) .... 23-16

23.6 Non-Structural Mount Installation............................................................................. 23-25

23.7 Outline and Installation Drawings ............................................................................. 23-31

Section 24 Engine/Airframe Sensor Installation ...........................................24-1

24.1 Engine/Airframe Sensor Options................................................................................. 24-1

24.2 Engine Sensor Applications......................................................................................... 24-7

24.3 Engine Sensor Installation ......................................................................................... 24-17

Section 25 Connector Installation Instructions .............................................25-1

25.1 Cable Connector Installation ....................................................................................... 25-1

25.2 Thermocouple Installation into a Backshell ................................................................ 25-1

25.3 Jackscrew Configuration Module Installation into a Jackscrew Backshell ................. 25-3

25.4 Jackscrew Backshell Installation Instructions ............................................................. 25-6

Section 26 LRU Pinouts ...................................................................................26-1

26.1 GAD 27 (Flaps/Lights/Trim Controller)...................................................................... 26-1

26.2 GAD 29/29B (ARINC 429 Adapter) ......................................................................... 26-10

26.3 GDU 37X (Display Unit)........................................................................................... 26-14

26.4 GDU 4XX (Display Unit).......................................................................................... 26-19

26.5 GEA 24 (EIS Interface) ............................................................................................. 26-28

26.6 GI 260 (AOA Indicator) ............................................................................................ 26-43

26.7 GMC 305 (AFCS Mode Controller).......................................................................... 26-45

26.8 GMC 307 (AFCS Mode Controller).......................................................................... 26-47

26.9 GMC 507 (AFCS Mode Controller).......................................................................... 26-49

26.10 GMU 11 (Magnetometer) ........................................................................................ 26-51

26.11 GMU 22 (Magnetometer) ........................................................................................ 26-53

26.12 GPS 20A (WAAS GPS Position Source) ................................................................ 26-54

26.13 GSA 28 (Autopilot Servo) ....................................................................................... 26-56

26.14 GSU 25 (AHRS/Air Data Sensor Unit) ................................................................... 26-59

26.15 GSU 73 (Sensor Unit).............................................................................................. 26-63

26.16 GTP 59 (Temperature Probe) .................................................................................. 26-75

26.17 GTR 20 (VHF Communications Radio).................................................................. 26-76

26.18 GTX 23 (Mode S Transponder)............................................................................... 26-81

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Section 27 G3X w/GSU 25 and/or GAD 29 Interconnect Drawings ............27-1

27.1 Core Interconnect Drawings w/GSU 25 and/or GAD 29 ............................................ 27-1

27.2 External Interconnect Drawings w/GSU 25 .............................................................. 27-12

Section 28 G3X w/GSU 73 Interconnect Drawings .......................................28-1

28.1 Core Interconnect Drawings ........................................................................................ 28-1

28.2 External Interconnect Drawings w/GSU 73 ................................................................ 28-5

Section 29 G3X w/GTR 20 Interconnect Drawings.......................................29-1

29.1 Notes for Section 29 Drawings.................................................................................... 29-2

29.2 Single GTR 20 Interconnect Drawings........................................................................ 29-3

29.3 Dual GTR 20 Interconnect Drawings .......................................................................... 29-7

Section 30 Sensor Wiring Examples ...............................................................30-1

30.1 Notes for Section 30 Drawings.................................................................................... 30-1

30.2 Sensor Wiring Examples w/GEA 24 ........................................................................... 30-2

30.3 Sensor Wiring Examples w/GSU 73 ........................................................................... 30-7

Section 31 Lycoming/Continental Sensor Wiring Examples........................31-1

31.1 Notes for Section 31 Drawings.................................................................................... 31-1

31.2 GEA 24 - Lycoming/Continental Sensor Drawings .................................................... 31-2

31.3 GSU 73 - Lycoming/Continental Sensor Drawings .................................................... 31-5

Section 32 Rotax Sensor Wiring Examples ....................................................32-1

32.1 Notes for Section 32 Drawings.................................................................................... 32-1

32.2 GEA 24 - Rotax Sensor Drawings............................................................................... 32-2

32.3 GSU 73 - Rotax Sensor Drawings ............................................................................... 32-7

Section 33 Jabiru Sensor Wiring Examples..................................................33-1

33.1 Notes for Section 33 Drawings.................................................................................... 33-1

33.2 GEA 24 - Jabiru Sensor Drawings............................................................................... 33-2

33.3 GSU 73 - Jabiru Sensor Drawings............................................................................... 33-4

Section 34 GDU 37X Configuration and Post Installation Checkout..........34-1

34.1 Recommended Test Equipment ................................................................................... 34-1

34.2 Configuration Mode..................................................................................................... 34-2

34.3 Software Loading Procedure ....................................................................................... 34-2

34.4 Configuration Pages..................................................................................................... 34-5

34.5 Garmin Database Updates ....................................................................................... 34-140

34.6 SiriusXM® Activation Instructions (GDU 375 only) ............................................. 34-144

34.7 External Interface Configuration (Garmin units only) ............................................ 34-145

34.8 GDU Splash Screen ................................................................................................. 34-148

34.9 Checklist Editor ....................................................................................................... 34-148

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Section 35 GDU 4XX Configuration and Post Installation Checkout .........35-1

35.1 Recommended Test Equipment ................................................................................... 35-2

35.2 Configuration Mode..................................................................................................... 35-2

35.3 Software Loading Procedure ....................................................................................... 35-3

35.4 Configuration Pages..................................................................................................... 35-5

35.5 Garmin Database Updates ....................................................................................... 35-190

35.6 SiriusXM® Activation Instructions (GDU 455/465 only) ...................................... 35-193

35.7 External Interface Configuration (Garmin units only) ............................................ 35-194

35.8 Sharing G3X Touch Flight Plans (Crossfill) with External IFR Navigators ........... 35-199

35.9 Checklist Editor ....................................................................................................... 35-200

Section 36 Troubleshooting ............................................................................36-1

36.1 General Troubleshooting ............................................................................................. 36-1

36.2 CAN Network Troubleshooting................................................................................... 36-2

36.3 GDU 37X/4XX ............................................................................................................ 36-2

36.4 Air Data Troubleshooting ............................................................................................ 36-3

36.5 Engine Indication Troubleshooting ............................................................................. 36-4

36.6 ADAHRS Troubleshooting.......................................................................................... 36-5

36.7 Post Installation Calibration Procedures ..................................................................... 36-7

36.8 GSU 73 Data Logging ................................................................................................. 36-8

36.9 Sending Troubleshooting Data to Garmin ................................................................. 36-10

Section 37 Maintenance ...................................................................................37-1

37.1 Inspections/Continued Airworthiness/Maintenance .................................................... 37-1

37.2 Return to Service Information ..................................................................................... 37-4

Appendix A Flight Test Plan for Autopilot Tuning........................................A-1

A.1 Introduction.................................................................................................................... A-1

A.2 Flight Test Outline ......................................................................................................... A-1

Appendix B Airframe Specific Installation Guidance ...................................B-1

B.1 Introduction .....................................................................................................................B-1

B.2 Van’s Aircraft..................................................................................................................B-2

B.3 Lancair Aircraft...............................................................................................................B-5

Appendix C RS-232 Text Output Format .......................................................C-1

C.1 Electrical Interface ..........................................................................................................C-1

C.2 Message Output Selection...............................................................................................C-1

C.3 General Message Output Format ....................................................................................C-1

C.4 Attitude/Air Data Message Format .................................................................................C-2

C.5 Engine Data Message Format .........................................................................................C-3

C.6 GPS Data Message Formats............................................................................................C-5

C.7 EIS Complete Data Message Format ..............................................................................C-7

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Appendix D LRU Performance Specifications/Licensing/Compliance ........D-1

D.1 GAD 29.......................................................................................................................... D-1

D.2 GAP 26........................................................................................................................... D-1

D.3 GDU 37X ....................................................................................................................... D-1

D.4 GDU 4XX ...................................................................................................................... D-2

D.5 GEA 24 .......................................................................................................................... D-2

D.6 GMA 245/245R ............................................................................................................. D-3

D.7 GMC 305/307/507 ......................................................................................................... D-3

D.8 GMU 11 ......................................................................................................................... D-4

D.9 GMU 22 ......................................................................................................................... D-4

D.10 GSA 28......................................................................................................................... D-4

D.11 GSU 25......................................................................................................................... D-5

D.12 GSU 73......................................................................................................................... D-6

D.13 GTP 59 ......................................................................................................................... D-7

D.14 GTR 20/200 ................................................................................................................. D-8

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1 INVENTORY OF MATERIALS

This manual provides all of the mechanical and electrical information required for the installation of the

G3X system. This manual is intended to be a step-by-step guide to the installation, therefore it is important

that the steps in all sections be performed in order. All materials that are required/optional for the

installation of the G3X are listed in this section (as such, some of the information in this section is repeated

in following sections).

Before beginning the G3X installation, it is recommended that the installer perform a complete inventory

of all materials listed in this section (some materials are optional and may not be applicable to the

installation). Section 1 should be used to verify that all components ordered from Garmin have been

delivered correctly, and to identify any required materials that are not provided by Garmin.

1.1 Unpacking Unit

Carefully unpack the equipment and make a visual inspection of all contents for evidence of damage

incurred during shipment. If any component of the G3X is damaged, notify the carrier and file a claim. To

justify a claim, save the original shipping container and all packing materials. Do not return any

equipment to Garmin until the carrier has authorized the claim.

Retain the original shipping containers for storage. If the original containers are not available, a separate

cardboard container should be prepared that is large enough to accommodate sufficient packing material to

prevent movement.

1.2 Required Garmin Equipment

1.2.1 Garmin LRU (Line Replaceable Unit) List for G3X systems

Table 1-1 and Table 1-2 list the two available G3X System LRU kits. The standard kit includes the

GSU 25 and GMU 11, the performance kit includes the GSU 25 and the GMU 22. Available GDU

Display Units are listed in Table 1-3

. All other G3X LRUs (listed in Table 1-7) are ordered separately.

Table 1-1 Contents of High Performance G3X LRU Kit* (K10-00016-03)

Item Part Number Quantity

GSU 25D, Unit Only 010-01071-51 1

GMU 22, Unit Only 010-01196-00 1

Configuration Module, EEPROM, Temp 010-12253-00 1

GTP 59 OAT Probe Kit 011-00978-00 1

The High Performance Kit must be used if the aircraft performance exceeds that specified for the

GSU 25, see Section D.11.2

Table 1-2 Contents of G3X Standard LRU (K10-00016-04)

Item Part Number Quantity

GSU 25C, Unit Only 010-01071-50 1

GMU 11, Unit Only 010-01788-00 1

Configuration Module, EEPROM, Temp 010-12253-00 1

GTP 59 OAT Probe Kit 011-00978-00 1

190-01115-01 G3X/G3X Touch Installation Manual - Inventory of Materials

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1.3 Optional Garmin Equipment

1.3.1 Garmin Optional LRU Installation Kits

Table 1-3 Available GDU Display Units

Item Part Number

G3X - GDU 370, 7" Portrait Non-Touch Display** 010-00667-15

G3X Touch - GDU 460, 10.6" Display 010-01057-00

G3X Touch - GDU 465, 10.6" Display with SXM Receiver 010-01057-10

G3X Touch - GDU 470, 7" Portrait Display 010-01765-00

G3X Touch - GDU 450, 7" Landscape Display 010-01056-00

G3X Touch - GDU 455, 7” Landscape Display with SXM Receiver 010-01056-10

*Any combination of G3X Touch displays can be installed in a single system (maximum of four displays)

**Not compatible with G3X Touch displays

Table 1-4 LRU Connector/Installation Kits

LRU

Connector/Installation

Kit Part Number

Installation Kit

Included with LRU?

GAD 27 Flaps/Lights/Trim

Controller

011-03877-00 (Table 3-2) N

GAD 29 ARINC 429 Adapter 011-03271-00 (Table 4-2) N

GAP 26 Air Data Probe N/A N

GDU 37X Display 011-01921-00 (Table 6-1) Y

GDU 45X Display 010-12150-01 (Table 7-1) N

GDU 46X Display 010-12150-00 (Table 8-1) N

GDU 470 Display 010-12150-02 (Table 9-1) N

GDL 39R (9 Pin Connector) 010-11825-20 (Table 1-6) N

GDL 5XR Data Link 010-12498-60 (Table 1-6) N

GEA 24 EIS 011-02886-00 (Table 10-2) N

GMC 305 Mode Controller 010-12034-00 (Table 12-2) N

GMC 307 Mode Controller 010-12421-00 (Table 13-2) N

GMC 507 Mode Controller 010-01946-00 (Table 14-2) N

GMU 11 Magnetometer 011-04349-90, Install Kit (Table 15-3) N

GMU 22 Magnetometer 011-00871-10, Conn Kit (Table 16-3) N

GPS 20A 011-03914-00 (Table 17-3) N

GSA 28 Servo Actuator

011-02950-00, Conn Kit (Table 18-6)

011-02950-01, 90° Conn Kit (Table 18-7

)

N

GSU 25 ADAHRS K10-00181-00, Conn Kit (Table 19-2 ) Y

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1.3.2 GPS/XM Antenna(s)

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 23

for required materials

for antenna installation including mounting brackets, doubler plates, rivets, hardware, cables, connectors,

and sealant.

GSU 73 ADAHRS/EIS NA Y

GTP 59 Temperature Probe 011-00978-00 (Table 21-2) Y

GTR 20 011-03241-00 (Table 22-3) Y

Garmin GPS and/or XM Antennas NA N

Table 1-5 Contents of GDL 39R Connector Kit (010-11825-20)

Item Part Number Quantity

Backshell w/Hdw, Jackscrew, 9/15 pin 011-01855-00 1

Conn, Receptacle, d-Sub, Crimp Socket, Commercial,

9 CKT

330-00625-09

1

Contact, Sckt, Mil Crimp, size 20, 20-24 AWG 336-00022-02 9

Table 1-6 Contents of GDL 5XR Connector Kit (010-12498-60)

Item Part Number Quantity

Backshell w/Hdw, Jackscrew, 15/26 pin 011-01855-01 1

Conn, Receptacle, d-Sub, Crimp Socket, Commercial,

15 CKT

330-00625-15

1

Contact, Sckt, Mil Crimp, size 20, 20-24 AWG 336-00022-02 16

Table 1-4 LRU Connector/Installation Kits

LRU

Connector/Installation

Kit Part Number

Installation Kit

Included with LRU?

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1.4 Optional Garmin LRUs

Table 1-7 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.

Table 1-7 Optional Garmin LRUs

LRU

All Install Info Included

In This Manual?

Section

GAD 27 Flaps/Lights/Trim Controller Yes Section 3

GAD 29 ARINC 429 Adapter Yes Section 4

GAP 26 Air Data Probe Yes Section 5

GDL 39/GDL 39R Data Link No NA

GDL 5XR Data Link No NA

GDU 37X* Display

(if installing more than one)

Yes Section 6

GDU 45X* Display

(if installing more than one)

Yes Section 7

GDU 46X* Display

(if installing more than one)

Yes Section 8

GDU 470* Display

(if installing more than one)

Yes Section 9

GEA 24 EIS Yes Section 10

GI 260 Yes Section 11

GMC 305 Mode Controller Yes Section 12

GMC 307 Mode Controller Yes Section 13

GMC 507 Mode Controller Yes Section 14

GMU 11 Magnetometer Yes Section 15

GNS 4XX/5XX Series Units No NA

GNS 480 GPS/Comm Navigator No NA

GSA 28 Servo Actuator Yes Section 18

GSU 25** ADAHRS Yes Section 19

GSU 73** ADAHRS/EIS Yes Section 20

GTN 6XX/7XX Series Units No NA

GTR 20 Yes Section 22

GTR 200 No NA

GTX Transponder No NA

*One GDU 37X or one GDU 4XX are required

**One GSU 25 and/or GSU 73 is required

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SL30 Nav/Comm Transceiver No NA

SL40 Comm Transceiver No NA

Table 1-7 Optional Garmin LRUs

LRU

All Install Info Included

In This Manual?

Section

*One GDU 37X or one GDU 4XX are required

**One GSU 25 and/or GSU 73 is required

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1.5 Required non-Garmin Equipment

1.5.1 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. RG-400 or RG-142 coaxial cable with

50  nominal impedance and meeting applicable aviation regulations should be used for the installation.

1.5.2 Contact and Crimp Tools

Table 1-8 lists recommended crimp tools used to build the wiring harnesses for the G3X LRUs, other

equivalent tooling may also be used.

NOTE

Non-Garmin part numbers shown are not maintained by Garmin and consequently are

subject to change without notice.

Table 1-8 Pin Contact and Crimp Tools Part Numbers

LRU Contact Type

Garmin

Contact Part

Number

Recommended

Positioner

Recommended

Insertion/

Extraction Tool

Recommended

Hand

Crimping Tool

GDU 37X

GDU 4XX

Socket, Size 20

336-00022-02

or 336-00094-00

M22520/2-08,

Daniels K13-1

M81969/1-04

for size 22D

pins and

M81969/1-02

for size 20 pins

M22520/2-01

GMC 305/

307/507

Pin, Size 22D

336-00021-00

(MIL P/N

M39029/58-360)

M22520/2-09

Positronic P/N

9502-4,

Daniels P/N K42

GSU 73

GTP 59

011-00979-20

(Config

module w/

EEPROM kit)

011-00981-00

(thermocouple

kit)

GMU 22 Socket, Size 20

336-00022-00

(MIL P/N

M39029/63-368)

M22520/2-08,

Daniels K13-1

011-00979-22

(Config

module w/

Sockets &

Jackscrew kit)

Socket, Size 20,

26-30 AWG

336-00022-01

M22520/2-08,

Daniels K13-1

Use crimp

setting 6 for 28

AWG

GAD 27/29

Socket, Size 20,

20-24 AWG

336-00022-02

M22520/2-08,

Daniels K13-1

GEA 24

(J241, J243,

J244)

GMU 11

GSA 28

GSU 25

GTR 20/200

GAD 29

Pin, Size 20

336-00024-00

(MIL P/N

M39029/64-369)

GEA 24

(J242 only)

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