vi ENSTROM F-28F/280FX RFM SUPPLEMENTReport No. 28-AC-081 Jan 15/19INTENTIONALLY LEFT BLANKThis electronic document is not linked to a subscription for revision control or distribution. Refer to the OptionalEquipment Supplement Publications Status link under the Technical Support Page of the Enstrom Helicopter websitefor the current revision level of the Rotorcraft Flight Manual Supplement.UNCONTROLLED COPY WHEN DOWNOADED OR PRINTED

Report No. 28-AC-081 Jan

General

Minimum Equipment

Traffic Display and Alerting

Before Takeoff

GTX 345 Installation

GTX 345 System Interface

Operation

GTX 345 Control Keys and Functions

Garmin GTX 345 Operator's Manual

TROUBLESHOOTING

INTRODUCTION

Applicability

Reference

SYSTEM DESCRIPTION

GTX 330/330D

Figure 2-1 GTX 330 or GTX 330D Interface Summary

GTX 33/33D

Figure 2-2 GTX 33 or GTX 33D Interface Summary

GTX 335/335R

Figure 2-3 GTX 335 or GTX 335R Interface Summary

GTX 345/345R

Figure 2-4 GTX 345 or GTX 345R Interface Summary

GTX 335R/345R with Legacy G1000

Electrical Load Information

GTX CONTROL AND OPERATION

GTX 335/345

GTX 33/33D and GTX 335R/345R

Figure 3-6 G1000 Transponder Control

Figure 3-7 G1000 Transponder Control

GTX 3X5 Install Tool

Figure 3-9 GTX 3X5/3X5R State Page

Figure 3-10 GTX 3X5/3X5R Status Page

Figure 3-11 GTX 3X5/3X5R Configuration Group

Figure 3-12 GTX 3X5/3X5R Diagnostics Group

Figure 3-13 GTX 3X5/3X5R Product Data Group

Servicing Information

Maintenance Intervals

Visual Inspection

Electrical Bonding Test

GTX 33X Connector Pinout Information

Table 5-2 GTX 33X Encoded Altitude Pin Assignments

Table 5-3 GTX 33/330 Discrete Outputs

Figure 5-7 GTX 33/330 ARINC 429 Connections

GTX 3X5 Connector Pinout Information

Figure 5-9 Rear View, Connector J3252

Table 5-8 GTX 3X5/3X5R Encoded Altitude Pin Assignments

Table 5-9 GTX 3X5/3X5R Discrete Outputs

Table 5-10 GTX 3X5/3X5R Configurable Output Pins

Table 5-12 GTX 3X5/3X5R Configurable Input Pins

Table 5-14 GTX 3X5/3X5R ARINC 429 Connections

UNIT REMOVAL AND REINSTALLATION

Figure 6-1 GTX 330 Mounting Rack/Connector Assembly

Figure 6-3 GTX 3X5 Connector Kits

Figure 6-4 GTX 3X5 without GPS Back Plate Assembly (P/N 011-02976-00)

Figure 6-6 GTX 3X5 Vertical Mount without GPS, Back Plate Assembly (P/N 011-02976-10)

Figure 6-7 GTX 3X5 Vertical Mount with GPS, Back Plate Assembly (P/N 011-02976-11)

Figure 6-9 GTX 3X5 Mounting Rack/Connector Assembly

Figure 6-10 GTX 3X5R Standard Mounting Rack/Connector Assembly

Figure 6-12 GTX 3X5R Vertical Mounting Rack/Connector Assembly

Transponder Antenna

SOFTWARE

Figure 7-2 GTX 330 Product Data Page

Figure 7-3 GTX 3X5 Start-Up Screen

Figure 7-5 GTN 6XX/7XX System Page

Figure 7-6 GX000 System Status Page

GTX 33/330 Software Update

GTX 3X5/3X5R Software Update

Figure 7-8 GTX 3X5 Install Tool Software Upload

SYSTEM CONFIGURATION AND CHECKOUT

GTX 3X5 Configuration

GTX Airborne Test Mode

Regulatory Test

ADS-B Out Test

GTX 3X5 with TCAS System Test (GX000 Only)

Maintenance Records

APPENDIX A INSTALLATION SPECIFIC INFORMATION

B.1 Considerations for Untreated or Bare Dissimilar Metals

Table B-1 Ground Plane Definitions and Ground Path Resistance Requirements

B.2 Preparation of Aluminum Surfaces

Figure B-4 Fiberglass Insulation for Carbon Material

Table B-2 Composite Airframe Bonding Hardware

Figure B-6 Aluminum Tape Ground Termination

Figure B-7 Remote GTX Aluminum Tape Installation

B.4 Tube and Fabric Aircraft

Table B-3 Tube and Fabric Airframe Bonding Hardware

Figure B-8 Electrical Bonding Using Conductive Clamp

B.5 Bonding Jumper

Table B-4 Airframe Bonding Hardware

GTX 345

SYSTEM OVERVIEW

Definitions and Abbreviations

ADS-B Capabilities

Interface Summary

General Specifications

Table 1-4 Physical Characteristics - Remote Mount Units

Transponder Specifications

MHz Receiver Specifications

GPS Antenna Requirements

Power Specifications

Certification

Table 1-13 TSO and ETSO Descriptions

Table 1-15 Software Design Assurance Levels

Operating Instructions

HSDB Packet Forwarding

I NSTALLATION O VERVIEW

Accessories Supplied

Optional Accessories

Installation Materials Required But Not Supplied

Installation Configurations

Antenna Considerations

Electrical Bonding

Cabling and Wiring

I NSTALLATION P ROCEDURE

Equipment Mounting - Remote Mount Units

C ONNECTOR P INOUT I NFORMATION

ADS-B Board Connector – P3252

Lighting Bus

Altitude Inputs

Discrete IO

Serial Data Interfaces

Suppression Bus

Audio Output

USB Interface

P OST I NSTALLATION C ONFIGURATION AND C HECKOUT

display backlight

Remote Unit Configuration

Flight Checks

C ONTINUED A IRWORTHINESS

A PPENDIX A MECHANICAL DRAWINGS

Figure A-1 GTX 3x5 Panel Mount Assembly

Figure A-2 GTX 3x5 Panel Mount Dimensions and CG

Figure A-3 GTX 3x5 Horizontal Remote Mount Assembly

Figure A-4 GTX 3x5 Horizontal Remote Mount Dimensions and CG

Figure A-5 GTX 3x5 Vertical Remote Mount Assembly

Figure A-6 GTX 3x5 Vertical Remote Mount Dimensions and CG

Figure A-7 GTX 3x5 G1000 Mount Rack Assembly

Figure A-8 GTX 3x5 G1000 Mounting Rack Center of Gravity

A PPENDIX B I NTERCONNECT DRAWINGS

Equipment Description

FIS-B Capabilities

Table 1-3 BDS Registers

Table 1-5 Physical Characteristics - Remote Mount Units

UAT Receiver Specifications (GTX 345 Only)

Table 1-14 Applicable P/Ns

Table 1-16 Software Design Assurance Levels

License Requirements

Reference Documents

ARINC 429 Data Concentrator Function

Unit Configurations

Necessary Installation Materials and Accessories Not Supplied

Minimum Systems Configuration

GTX Input Source Priority

Figure 3-2 Pressure Altitude Priority Order

Table 3-12 Barometric Vertical Rate Source Priority

Table 3-15 Barometric Pressure Setting Source Priority

Table 3-17 Magnetic Heading Source Priority

Table 3-20 Total Air Temperature Source Priority

Table 3-23 Pressure Altitude Source Priority Order #12

Table 3-27 AHRS Source Priority

Table 3-31 Radio Altitude Source Priority

ADS-B In Considerations

Bluetooth Considerations (GTX 345R Only)

Figure 3-4 GPS Locations of Antennas

Backshell Assembly Parts

Shielded Cable Preparation

Figure 4-1 Shielded Cable Preparation

Connector and Backshell Assembly

Figure 4-2 Shield Termination on Backshell Assembly

Figure 4-3 Connector and Backshell Assembly

Configuration Module Installation

Figure 4-4 Configuration Module Installation

Coax Cable Installation

Figure 4-5 GAE Assembly

Panel and Standard Remote Mount Unit Installation and Removal

Vertical Remote Mount Unit Installation and Removal

Main Board Connector - J3251

ADS-B Board Connector - J3252 (GTX 345 Only)

Power

Discrete I/O

Table 5-10 ARINC 429 Inputs and Outputs

Configuration Module

P OST I NSTALLATION C ONFIGURATION & C HECKOUT

Configuration Mode and Settings

Audio Settings

Figure 6-3 Audio Page 2

Interfaces

Table 6-1 RS-232 Channel 1 through Channel 3 Selections

Figure 6-6 RS-232 Interface Page

Figure 6-7 RS-422 Output Page

Figure 6-8 A429 In Page

Figure 6-9 A429 Output Page

Figure 6-10 HSDB Interface Page

Figure 6-11 Discrete In Page

Figure 6-12 Discrete Out Page

Unit Settings

Figure 6-15 Altitude and Temperature Units Page

Figure 6-17 Altitude Alert Deviation and Restore Page

Display Pages