Garmin GSU 75 - User Manual

190-01639-00 May, 2017 Revision 6
GSU 75 ADAHRS
Installation Manual
340095
The document reference is online, please check the correspondence between the online documentation and the printed version.

Summary

Section 1 GENERAL DESCRIPTION

1.2 Equipment Description

Details functionality and features of the GSU 75 ADAHRS and GMU 44 units.

1.3 Interface Summary

1.4 Technical Specifications

Section 2 INSTALLATION OVERVIEW

2.3 Equipment Available

2.4 Additional Equipment Required

2.5 Cabling and Wiring

2.6 Electrical Bonding

Details requirements for electrical bonding and lightning protection.

2.7 Pneumatic Plumbing

Explains connecting pitot and static pressure sources to the GSU 75.

2.11 Mounting Requirements

Details guidelines for mounting GSU 75 and GMU 44 units.

Section 3 INSTALLATION PROCEDURE

3.2 Wiring Harness Installation

Details fabrication and connection of wiring harnesses for GSU 75 and GMU 44.

3.3 Backshell Assembly and Installation

3.4 GSU 75;GMU 44 Interconnect Harness Fabrication Instructions

3.5 GSU 75;GTP 59 Interconnect Harness Fabrication Instructions

3.6 Pneumatic Connections

3.7 Mounting Instructions

Provides guidelines for mounting the GSU 75 and GMU 44 units.

Section 4 SYSTEM INTERCONNECTS

4.1 Pin Function List

4.2 Power Functions

4.3 Data Interfaces

4.4 GSU 75 Discrete Inputs

4.5 GSU 75 OAT Probe

4.6 GSU 75 PPS Inputs

4.7 GSU 75 ARINC 429 System ID Connections

4.8 GSU 75 System ID Inputs

Section 5 POST INSTALLATION, CONFIGURATION, AND CHECKOUT PROCEDURE

5.2 Post-Installation Calibration Procedures

Outlines required calibration procedures after installation is complete.

5.3 Calibration Procedure A-1: Pitch;Roll Offset Compensation by Aircraft Leveling

Details leveling procedure for pitch/roll offset compensation.

5.4 Calibration Procedure A-2: Zero Pitch;Roll Offsets by Manual Entry

Details manual entry procedure for pitch/roll offsets.

5.5 Calibration Procedure B: Magnetometer Calibration

Explains the magnetometer calibration procedure using a taxi maneuver.

5.6 Calibration Procedure C: Heading Offset Compensation

5.7 Calibration Procedure D: Engine Run-Up Vibration Test

Details the vibration test procedure using engine run-up.

5.8 Calibration Procedure E: Magnetometer Interference Test

Details the test to check for magnetic interference impacting the GMU 44.

5.9 Site Evaluation of Magnetic Disturbances for Magnetometer Calibration Procedure

Garmin GSU 75 Specifications

General

Brand	Garmin
Model	GSU 75
Category	Avionics Display
Language	English