Table 4-12 Tel Audio/Xcvr 3 I/O; Table 4-13 Headset Outputs - Garmin GMA 245 Installation Manual

Audio panel

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Pilot's manual (30 pages)

Table Of Contents

Table of Contents

4.6.7

Tel Audio I/O

Connector

J2401

4.6.8

Headset Outputs

Garmin recommends that stereo headsets and stereo jacks be used to fully utilize the 3D audio features of

the GMA 245. A true mono headset will work correctly with the GMA 245, but only mono (left channel)

audio will be heard, and 3D audio will not be available (even if enabled). The GMA 245 will detect the

mono headset (if stereo jacks are used), and automatically switch to mono operation. 3D audio is not

available with mono headsets or in installations that use mono jacks for the headsets.

In aircraft systems that are wired with stereo headset jacks, if a true mono headset is plugged into the jack,

the right audio channel is shorted to ground. In this condition the GMA 245 will detect the right channel

short, and turn off the right channel audio to the headset output to protect the GMA 245 headset output

from driving a signal into a short (and also for internal audio routing determined by the mono headset

plugged into the headset jack).

In aircraft systems that use mono headset jacks, and are wired correctly (if used, mono jacks should always

use left channel audio and headset lo), 3D audio will not be available, and only left channel audio for

music inputs or headset outputs will be heard.

Connector

J2402

190-01879-11

Rev. 6