Garmin GMA 340 User Manual

P/N 11934-S01 1 of 10
Cirrus Design Section 9
SR20 Supplements
Pilot’s Operating Handbook and
FAA Approved Airplane Flight Manual
Supplement
for
Garmin GMA 340 Audio System
Includes Optional XM Radio System
When the Garmin GMA 340 Audio Panel and the optional XM Radio
System are installed in the Cirrus Design SR20, this Supplement is
applicable and must be inserted in the Supplements Section (Section
9) of the Cirrus Design SR20 Pilot’s Operating Handbook (Handbook).
Information in this supplement either adds to, supersedes, or deletes
information in the basic Handbook.
• Note •
This POH Supplement Revision dated Revision 1: 07-18-05
supersedes and replaces the original issue of this supplement
dated 07-03-04. This revision adds required data for the
optional XM Radio System available for the Garmin GMA 340.
Revision 1: 07-18-05

Garmin GMA 340 Specifications

General

Com Radios	2
Nav Radios	2
Marker Beacon Receiver	Yes
Split Com	Yes
Pilot Isolate	Yes
Crew Isolate	Yes
Category	Audio Panel
Bluetooth	No
Voltage	14/28 V

Summary

Section 7 - System Description

Power On and Fail-safe Operation

Explains how the audio panel is powered on and its fail-safe circuit.

Test Functionality

Describes the function of the TEST button and its indicators.

Audio and Transceiver Selection

Details how to select audio sources and microphones for transmit/receive.

Split COM Functionality

Explains the split COM function for pilot/copilot communication and PA.

COM Swap Mode Availability

Notes that COM swap mode is not available in this installation.

Speaker Output Control

Describes how selected audio is heard via the cabin speaker and its muting.

Public Address (PA) Function

Details the PA function for broadcasting through the cabin speaker.

Personal Music Input Handling

Covers the connection and behavior of personal music inputs during intercom activity.

Intercom System Overview

Explains the location and basic controls of the intercom system.

Intercom Volume and Squelch Control

Details pilot/copilot volume and VOX squelch controls for the intercom.

Intercom Mode Operations

Describes PILOT, CREW, and ALL intercom modes and their audio routing.

Marker Beacon System

Describes the marker beacon receiver, its indicators, and controls.

Marker Beacon Sensitivity Adjustment

Explains how to adjust marker beacon receiver sensitivity using the SENS button.

XM Radio System Installation

Details the optional XM Radio System, its operation, and power requirements.