GMA 245pilot’s guide

Features and Operation

Power-UP

Transceivers

Enabling/Disabling Monitored COM Muting

PILOT ICS Isolation

Speaker

Clearance Recorder and Player

Entertainment Inputs

Bluetooth

Pairing a Bluetooth Device

Pairing to a Garmin VIRB X or VIRB XE Action Camera

Disabling Bluetooth

Entertainment Muting

Fail-Safe Operation

Garmin GMA 245 Pilot's Manual

Section 1 General Description

Technical Specifications

Table 1-3 Electrical Characteristics

Table 1-4 Speaker Output

Table 1-5 GMA 245/245R Power Requirements

Reference Documents

Section 2 Installation Overview

Table 2-5 Contents of GMA 245 Conn Kit (011-02302-00, also used for GMA 35/350)

Installation Considerations

Cabling and Wiring

Configuration, and Adjustment Options

Figure 2-2 SD Card Slot and DIP Switch Locations

Table 2-11 GMA 245R DIP Switch Configuration Settings

Figure 2-3 Front Panel Configuration

Table 2-12 Hardwire Configuration Options

Updating Software

Noise

Mounting Requirements

Figure 2-5 GMA 245R w/Mounting Brackets on Front and Back

Section 3 Installation Procedure

Jackscrew and Shield Block Backshell Installation Instructions

Figure 3-1 GMA 245R Jackscrew Backshell Assembly

Figure 3-2 GMA 245 Shield Block Backshell Assembly

Figure 3-3 Method A.1 for Shield Termination

Figure 3-4 Insulation/Contact Clearance

Figure 3-5 Method A.2 (Daisy Chain) for Shield Termination

Figure 3-6 Method B.1 (Quick Term) for Shield Termination

Figure 3-7 Method B.2 (Daisy Chain-Quick Term) for Shield Termination

Figure 3-8 Daisy Chain between Methods A and B

Figure 3-9 Jackscrew D-Sub Spliced Signal Wire illustration

Figure 3-10 Shield Block D-Sub Spliced Signal Wire illustration

Backshell Assembly

Unit Installation

Post Installation Checkout

Continued Airworthiness

Section 4 System Interconnects

Table 4-2 J2402 Pin Assignments

Aircraft Power

Lighting Bus

Audio Inputs/Outputs and Mic Keys

Table 4-8 Alert Audio I/O

Table 4-10 Failsafe Warning Audio

Table 4-12 TEL Audio/XCVR 3 I/O

Discrete Inputs

A.1 Mechanical Considerations

A.3 GMA 240 to GMA 245 Retrofit Connections

Appendix B Outline and Installation Drawings

Figure B-2 GMA 245 Installation Drawing

Figure B-3 GMA 245R Outline Drawing, End Mount Bracket Installation

Figure B-4 GMA 245/245R Outline Drawing, Side Mount Bracket Installation

Figure B-5 GMA 245/245R Installation Drawing, End and Side Bracket Mounting

Appendix C Interconnect Drawings

Figure C-2 J2401 Connector Example Interconnect Drawing

Figure C-3 J2402 Connector Example Interconnect Drawing

Figure C-4 Lighting Bus Example Interconnect Drawing

Figure C-5 Mono Audio Example Interconnect Drawing

Figure C-6 Four Passenger Headset Wiring Example Interconnect Drawing

Figure C-7 J2401 & J2402 Connector Layout Drawing

GMA 245


Contents Table Of Contents Features and Operation Power-UP Transceivers Enabling/Disabling Monitored COM Muting PILOT ICS Isolation Speaker Clearance Recorder and Player Entertainment Inputs Bluetooth Pairing a Bluetooth Device Pairing to a Garmin VIRB X or VIRB XE Action Camera Disabling Bluetooth Entertainment Muting Fail-Safe Operation	GMA 245pilot’s guide Next / 30