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Garmin GDU 370 User Manual

Garmin GDU 370
188 pages
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190-01115-01 August, 2009 Revision A
G3X
Installation Manual

Table of Contents

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Garmin GDU 370 Specifications

General IconGeneral
Display Resolution1024 x 768 pixels
Display TypeLCD
TouchscreenYes
Aviation DatabaseYes
Weather SupportYes
Weight3.5 lbs
ConnectivityBluetooth, Wi-Fi

Summary

1 G3X Installation Overview

1.1 Unpacking and Introduction

Procedures for safely unpacking G3X components and manual overview.

1.3 System Overview and Architecture

Description of the G3X system's integrated avionics suite and block diagram.

1.4 General G3X LRU Specifications

Details specifications for G3X Line Replaceable Units (LRUs), including part numbers and physical data.

1.5 Installation Requirements

1.5.1 Required Accessories

Lists essential kits and accessories required for G3X system installation.

1.7 Wiring and Cabling Considerations

1.7.1 Harness Installation

Procedures for installing wiring harnesses and routing cables, considering interference.

1.7.3 Cable Installation and Backshells

Instructions for cable installation, including coaxial cables and backshell assemblies.

2 GDU 37X

2.1 Equipment and Navigation Functions

Overview of GDU 37X display, interface, and navigation capabilities.

2.2 Electrical and Environmental Specifications

Covers power, GPS specs, supported antennas, and operating environment.

2.4 Installation Requirements, Considerations, and Mounting

Details accessories, tools, guidelines, and mounting procedures for the GDU 37X.

2.9 Panel Cutout Template

Provides precise dimensions for the panel cutout required for GDU 37X installation.

3 GMU 44

3.1 Equipment Description and Specifications

Overview of GMU 44, electrical, environmental, and TSO/ETSO compliance specs.

3.5 Installation Requirements and Considerations

Lists available equipment, part numbers, and guidelines for GMU 44 installation.

3.7 Interconnect Harness and Mounting

Details parts for the interconnect harness and mounting instructions.

3.9 Maintenance

Information regarding maintenance for the GMU 44.

4 GSU 73

4.1 Equipment Description and Features

Overview of GSU 73 Sensor Unit, its functions, and summary of features.

4.2 Electrical and Environmental Specifications

Details supply specifications, environmental data, and operating ranges for GSU 73.

4.4 Installation Requirements and Considerations

Lists kits, accessories, and guidelines for GSU 73 installation and connections.

4.6 Mounting and Installation Procedures

Specifies mounting requirements, unit installation steps, and maintenance information.

5 GTP 59

5.1 Equipment Description and Availability

Overview of the GTP 59 temperature probe and its available kit.

5.2 Installation Requirements and Compliance

Lists kit contents, required cables, and TSO/ETSO compliance for GTP 59.

5.4 Installation Considerations and Procedures

Discusses icing, probe installation guidance, and general installation considerations.

5.6 Maintenance

Information regarding maintenance for the GTP 59.

6 Garmin GPS/XM Antennas

6.1 GPS and XM Antennas

Lists supported GPS and XM antennas and their minimum requirements.

6.3 Antenna Mounting Considerations

Guidelines for optimal placement, interference avoidance, and buried antenna mounting.

6.4 Teardrop and ARINC 743 Antenna Installation

Structural mounting procedures for teardrop and ARINC 743 footprint antennas.

6.6 Non-Structural Mounting

Examples and considerations for non-structural antenna mounting.

7 Software, Configuration, Databases, and XM Activation

7.1 Configuration Mode and Software Identification

Steps to enter configuration mode and identify LRU software/audio data.

7.3 Software Loading Procedures

Steps for loading software onto GDU and GSU units.

7.4 Configuration Pages

Details all configuration pages for system settings like units, display, and sound.

7.5 Database Updates and XM Activation

Instructions for updating databases and activating XM service on GDU 375.

8 Post-Installation Checkout and Calibration

8.1 Test Equipment and GDU 37X Tests

Lists recommended test equipment and procedures for GDU 37X receivers.

8.3 GSU 73/GMU 44 Calibration Procedures

Outlines essential calibration procedures for GSU 73 and GMU 44.

8.3.1-8.3.6 Calibration Procedures A-F

Details AHRS orientation, offsets, magnetometer, vibration, and interference tests.

8.3.7 Site Evaluation for Magnetometer Calibration

Method to evaluate sites for magnetic cleanliness before magnetometer calibration.

9 Troubleshooting

9.1 GDU 37X Issues

Addresses SD card issues and crosstalk errors in GDU 37X systems.

9.2 GMU 44 Heading Failures

Explains Red-X failures related to heading and magnetic anomalies for GMU 44.

9.3 GSU 73 Data and Failure Troubleshooting

Covers GPS dependency, attitude/heading, air data, and engine indication troubleshooting.

9.5 On-board Aircraft Troubleshooting

Steps for physical inspection and troubleshooting GSU 73 issues on the aircraft.

10 Return to Service Information

10.1 GDU 37X Return to Service

Procedures for returning GDU 37X to service after installation or replacement.

10.2 GSU 73 Return to Service

Procedures for returning GSU 73 to service after installation or replacement.

10.3 GMU 44 Return to Service

Procedures for returning GMU 44 to service after installation or recalibration.

APPENDIX A G3X Pinouts

A.1 GDU 37X Pinouts

Details P3701 connector pin assignments for the GDU 37X.

A.2 GMU 44 Pinouts

Details P441 connector pin assignments for the GMU 44.

A.3 GSU 73 Pinouts

Details P731 and P732 connector pin assignments for the GSU 73.

APPENDIX B Connector Installation Instructions

B.1 Thermocouple and Jackscrew Module Installation

Procedures for thermocouple and configuration module installation into backshells.

B.3 Jackscrew Backshell Shielding and Termination

Instructions for shield block installation and various shield termination techniques.

B.4 Circular Connector Shield Termination

Instructions for circular connector installation and shield termination methods.

APPENDIX C Outline and Installation Drawings

C.1 GDU 37X Drawings

Outline and panel cutout drawings for the GDU 37X.

C.2 GMU 44 Drawings

Drawings for GMU 44 mounting rack and installation.

C.3 GSU 73 Outline Drawing

Outline drawing for the GSU 73 unit.

C.5 Antenna Installation Drawings

Installation drawings for various Garmin antennas.

APPENDIX D Interconnect Drawings

D.1 Power and Antenna Interconnects

Notes on power, antennas, and their interconnects.

D.1.2 GDU 37X and GSU 73 Interconnects

Interconnect drawing detailing GDU 37X and GSU 73 connections.

APPENDIX E External Interface Drawings

E.1 GDU 37X Interface Examples

Examples of GDU 37X RS-232 and audio interface connections.

E.1.2 GSU 73 Interface Examples

Examples of GSU 73 RS-232 and ARINC 429 interface connections.

E.1.3 Autopilot Interface Examples

Examples of Tru Trak and Trio Auto Pilot interface connections.

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