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Garmin GMA 350H インストレーション・マニュアル
1

GENERAL DESCRIPTION

1.1

Introduction

This manual presents mechanical and electrical installation requirements for installing the Garmin
GMA 350/350H audio panel. The GMA 350/350H can be incorporated into a variety of airframes under
appropriate TC or STC. Each airframe installation may vary. Use only approved (type or supplemental
type) data for specific installation instructions in a particular aircraft.
1.2

Equipment Description

The Garmin GMA 350/350H is a horizontally oriented panel-mounted audio controller and marker
beacon system. that collects, processes, and distributes audio signals between avionics, crew, and
passengers.
The GMA 350/350H is a high-fidelity digital audio product with improved circuitry that make audio
signals less prone to noise (e.g. whining sound of an alternator or blip sound from a radar). At the GMA's
core is a digital signal processor (DSP) that cleans up audio using advanced filtering techniques and
provides VOX control for mic inputs. On the outputs, the GMA 350/350H features high-quality digital-
to-analog converters and headset amplifier circuits that are used to minimize noise and distortion.
The GMA 350/350H provides a speaker output that may be used as a cockpit speaker or for a PA system
to address passengers. The GMA 350/350H also includes a digital recording and playback feature. The
GMA 350/350H allows ICS volume adjustments for pilot, copilot, and passenger. Additionally there is a
volume adjustment for the MKR, AUX, MUSIC, and TEL sources.
GMA 350/350H Installation Manual
190-01134-11
The document reference is online, please check the correspondence between the online documentation and the printed version.
Figure 1-1. GMA 350 Unit View
Figure 1-2. GMA 350H Unit View
Page 1-1
Revision A