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Garmin GTX 3X5 User Manual

Garmin GTX 3X5
174 pages
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190-01499-02 February 2016 Revision 4
GTX 3X5 Transponder
TSO Installation Manual

Table of Contents

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Garmin GTX 3X5 Specifications

General IconGeneral
BrandGarmin
ModelGTX 3X5
CategoryMarine Radio
LanguageEnglish

Summary

System Overview

Scope

Manual provides mechanical and electrical information for GTX 3X5 installation.

Equipment Description

Describes GTX 3X5 models, including transponders and optional GPS.

Definitions and Abbreviations

Lists and defines abbreviations and acronyms used in the document.

ADS-B Capabilities

Details ADS-B Out and ADS-B In capabilities of the GTX 3X5 units.

FIS-B Capabilities

Explains FIS-B information reception from UAT ground stations.

TIS System Capabilities

Describes how GTX 335 supplies traffic information via FAA radar-based TIS.

Interface Summary

Summary of interfaces and I/O quantities for GTX 335 and GTX 345.

General Specifications

Lists physical characteristics, operating range, altitude, and audio output specs.

Transponder Specifications

Details transponder frequency, power, receiver sensitivity, and suppression.

UAT Receiver Specifications (GTX 345 Only)

Lists frequency, modulation, data rate, and sensitivity for UAT receiver.

1090 MHz Receiver Specifications

Details frequency, modulation, data rate, and sensitivity for 1090 MHz receiver.

GPS Specifications

Lists GPS channels, frequency, sensitivity, accuracy, and datum.

Power Specifications

Details input voltage, power, and current requirements for GTX 3X5 units.

Certification

Outlines TSO compliance and lists functions evaluated under TSO.

License Requirements

Discusses FCC regulations and licensing requirements for the UHF transmitter.

Reference Documents

Lists additional documents for GTX 3X5 installation and technical information.

Limitations

HSDB Packet Forwarding

GTX 345 HSDB interface not approved for hazardous failure data.

ARINC 429 Data Concentrator Function

ARINC 429 data must not be used for functions classified as hazardous failure.

Installation Overview

Introduction

Info on installing GTX 3X5 and accessories, following aviation procedures.

Unit Configurations

Details the different configurations available for the GTX 3X5 units.

Accessories Supplied

Lists the items included with each GTX 3X5 unit kit.

Optional Accessories

Describes optional accessories like GAE, GX000 Rack, and Vertical Remote Mount.

GPS Antenna

Details requirements and types of GPS antennas for GTX 335/345 with internal GPS.

Necessary Installation Materials

Lists essential materials and accessories not included with the GTX 3X5.

Necessary Special Tools

Lists special tools required for connector and contact crimping.

Transponder Antenna

Discusses UHF antenna requirements and acceptable models for GTX 3X5/3X5R.

GPS Antenna Requirements

Lists antenna specifications for optimal performance with internal GNSS receiver.

Minimum Systems Configuration

Details necessary components for various GTX 3X5 models for ADS-B/FIS-B displays.

GTX Input Source Priority

Explains how the GTX 3X5 selects data from multiple sources based on priority.

GPS/SBAS Parameters

Lists parameters received from internal and external GPS receivers.

Antenna Considerations

Provides guidance on mounting location for transponder and GPS antennas.

Electrical Bonding

Ensures transponder and GPS antennas are electrically bonded to the aircraft.

Cabling and Wiring

Covers considerations for installing wiring according to AC 43.13-1B.

Electrical Bonding Considerations

Details requirements for achieving a proper electrical bond for equipment.

Cooling Requirements

States that no cooling requirements exist for the GTX 3X5.

Installation Procedure

Wire Harness Installation

Details how to install pins into connectors and build a wire harness.

Backshell Assembly Parts

Lists parts included in connector kits for backshell assemblies.

Shielded Cable Preparation

Explains how to prepare shielded cables for termination to the connector backshell.

Connector and Backshell Assembly

Provides step-by-step instructions for assembling connectors and backshells.

Configuration Module Installation

Details the installation of the configuration module for unit settings.

Coax Cable Installation

Outlines steps for routing, attaching, trimming, and connecting coaxial cables.

Equipment Rack Installation

Instructions for installing panel mount and remote mount units into racks.

Panel and Standard Remote Mount Unit Installation

Procedure for installing and removing panel and standard remote mount units.

Vertical Remote Mount Unit Installation

Procedure for installing and removing vertical remote mount units.

Connector Pinout Information

Main Board Connector P3251

Details pin assignments and I/O for the main board connector (P3251).

ADS-B Board Connector P3252 (GTX 345 Only)

Details pin assignments and I/O for the ADS-B board connector on GTX 345.

Power Connections

Describes power inputs, aircraft power, ground, and switched power outputs.

Lighting Bus Connections

Explains how the lighting bus input controls display/keypad brightness.

Altitude Inputs

Lists various sources for pressure altitude input, including Gray code and GAE.

Discrete I/O

Describes active-low discrete inputs and configurable discrete outputs.

Serial Data Interfaces

Details RS-232, ARINC 429, HSDB, and RS-422 interface specifications.

Suppression Bus

Describes the external suppression connection for L-band equipment.

OAT Input

Details the OAT input for displays and temperature sensor specifications.

Audio Output

Describes the audio output for aural alerts and its capability.

Time Mark Output

Explains the use of TIME MARK as an output for 1PPS to other equipment.

Configuration Module Interface

Details the interface for configuration modules and optional GAE modules.

USB Interface

Explains the use of the USB interface for configuration and updates.

Post Installation Configuration and Checkout

System Configuration Overview

Outlines the required GTX 3X5 configuration and checkout procedures.

Mounting, Wiring, and Power Checks

Details checks for wire harness, connections, and power before unit energization.

Configuration Mode and Settings

Explains how to enter configuration mode and navigate settings for panel mount units.

Audio Settings

Sets audio output, volume, and alert types for the transponder.

Interface Configuration

Configures inputs/outputs for RS-232, ARINC 429, discretes, and HSDB interfaces.

Unit Settings

Details settings for FIS-B, Altitude Units, Temperature Units, Installation ID, VFR ID.

Display Pages Configuration

Configures display backlight, keypad backlight, and photocell settings.

Sensor Configuration

Configures OAT sensor, altitude sources, GPS sources, integrity, and offsets.

ADSB Configuration

Configures aircraft category, airspeed, length, width, and ADS-B In/Out settings.

Diagnostics

Provides information for troubleshooting, including input states and channel status.

Remote Unit Configuration

Details using the GTX 3X5 Install Tool via USB for unit configuration.

Ground Check - GPS Reception

Procedure for checking GPS reception and LAT/LON accuracy on the ground.

Software Installation Procedure

Instructions for downloading and installing software using the GTX 3X5 Install Tool.

Continued Airworthiness

Appendix A Data Formats

RS-232 Air Data Input Format

Details electrical interface and altitude/airdata message formats for RS-232.

Appendix C Equipment Compatibility

ADS-B In Displays Compatibility

Lists compatible ADS-B In displays and their configuration settings.

GPS Sources Compatibility

Details compatible GPS sources and their interface configurations.

Altitude Sources Compatibility

Lists compatible altitude sources and their configuration settings.

Audio Panels Compatibility

Lists compatible audio panels and their GTX 3X5 configuration settings.

Radar Altimeters Compatibility

Lists compatible radar altimeters and their GTX 3X5 configuration.

Heading Reference Sources Compatibility

Lists compatible heading reference sources and their configurations.

Traffic Sensors Compatibility (GTX 345 Only)

Lists compatible traffic sensors for the GTX 345 and their configurations.

Bluetooth Compatibility

Details Bluetooth compatibility and configuration settings.

Remote Control Compatibility

Lists compatible remote control units and their configurations.

TIS-A Display Compatibility

Lists compatible TIS-A displays and their configurations.

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