Garmin GMA 350H Pilot's Guide

GMA 350H

Pilot’s Guide

This manual reﬂects the operation of GMA 350H Audio Panel. Some differences in operation may be observed when comparing the information in this manual to some installations as conﬁguration changes can be made by the installer.

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Garmin AT, Inc., 2345 Turner Road SE, Salem, OR 97302, U.S.A. Tel: 503/391.3411 Fax 503/364.2138

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Web Site Address: www.garmin.com

Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated, downloaded or stored in any storage medium, for any purpose without the express written permission of Garmin. Garmin hereby grants permission to download a single copy of this manual and of any revision to this manual onto a hard drive or other electronic storage medium to be viewed for personal use, provided that such electronic or printed copy of this manual or revision must contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited.

Garmin® is a registered trademark of Garmin Ltd. or its subsidiaries. These trademarks may not be used without the express permission of Garmin.

January, 2013 190-01134-14 Rev. D Printed in the U.S.A.

LIMITED WARRANTY

This Garmin product is warranted to be free from defects in materials or workmanship for two years from the date of purchase. Within this period, Garmin will, at its sole option, repair or replace any components that fail in normal use. Such repairs or replacement will be made at no charge to the customer for parts and labor, provided that the customer shall be responsible for any transportation cost. This warranty does not cover failures due to abuse, misuse, accident, or unauthorized alterations or repairs. In addition, Garmin reserves the right to refuse warranty claims against products or services that are obtained and/or used in contravention of the law of any country.

THE WARRANTIES AND REMEDIES CONTAINED HEREIN ARE EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED OR STATUTORY, INCLUDING ANY LIABILITY ARISING UNDER ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, STATUTORY OR OTHERWISE. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, WHICH MAY VARY FROM STATE TO STATE.

IN NO EVENT SHALL GARMIN BE LIABLE FOR ANY INCIDENTAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER RESULTING FROM THE USE, MISUSE, OR INABILITY TO USE THIS PRODUCT OR FROM DEFECTS IN THE PRODUCT. Some states do not allow the exclusion of incidental or consequential damages, so the above limitations may not apply to you.

Garmin retains the exclusive right to repair or replace the unit or software, or to offer a full refund of the purchase price, at its sole discretion. SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY.

To obtain warranty service, contact your local Garmin Authorized Service Center. For assistance in locating a Service Center near you, visit the Garmin Web site at “http:// www.garmin.com” or contact Garmin Customer Service at 800-800-1020.

CAUTION:

Incorrect aircraft wiring could short the left channel or both channels to ground if a monaural headset is plugged into the stereo jacks. If wired incorrectly, fail-safe operation will not work.

Table of Contents

Controls ................................................................................................................ 1

Features and Operation ...................................................................................... 5

Power-UP.............................................................................................................. 5

Mono/Stereo Headsets .......................................................................................5

Transceivers ......................................................................................................... 6

Enabling/Disabling Monitored COM Muting .............................................................6

Split-COM Mode .....................................................................................................6

Transmit Indications ................................................................................................7

Receivers .............................................................................................................. 8

Marker Beacon Receiver ..........................................................................................8

Intercom System (ICS) ......................................................................................10

Copilot Conﬁgured as Crew or Passenger ..............................................................10

Intercom MODES ...................................................................................................11

Intercom Volume and Squelch ................................................................................15

Speaker .................................................................................................................17

3D Audio .............................................................................................................18

Clearance Recorder and Player ........................................................................21

Voice Recognition .............................................................................................21

Entertainment Inputs .......................................................................................28

Telephone and Entertainment Muting ....................................................................28

Fail-Safe Operation ........................................................................................... 28

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Garmin GMA 350H Pilot’s Guide

Table of Contents

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Garmin GMA 350H Pilot’s Guide

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CONTROLS

GMA 350H Audio Panel

14 15 1712 1311

GMA 350H Controls

8642 3 5 7 9

19 20

NOTE:

illuminated.

MKR/MUTE

currently received marker beacon receiver audio. Deactivates automatically and marker beacon audio is heard when the next marker beacon signal is received. Also, stops play of recorded COM audio.

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GMA 350H (Trafﬁc) Controls

When a key is selected, a triangular annunciator above the key is

– Selects marker beacon receiver audio. Mutes the

Garmin GMA 350H Pilot’s Guide

GMA 350H Audio Panel

COM1

– When selected, audio from the #1 COM receiver can be heard. Press and hold to enable/disable monitored COM muting during primary COM reception.

COM2

– When selected, audio from the #2 COM receiver can be heard. Press and hold to enable/disable monitored COM muting during primary COM reception.

COM3

– When selected, audio from the #3 COM receiver can be heard. Press and hold to enable/disable monitored COM muting during primary COM reception.

NAV1

AUX

– When selected, audio from the #1 NAV receiver can be heard.

– When selected, audio from the AUX inputs can be heard.

– Selects and deselects audio from a telephone or entertainment device connected to the Front Panel Jack. Audio from a telephone device connected to the rear of the audio panel is used if a device is not connected to the Front Panel Jack. Press and hold to enable/disable

muting during reception.

MUSIC

– Selects and deselects music entertainment audio. Press and

hold to enable/disable MUSIC muting during reception.

MAN SQ – Manual Squelch annunciator. When lit, squelch is controlled manually.

Volume Indicator

– Indicates volume/squelch setting relative to full

scale.

Front Panel Jack

– Used for an entertainment or telephone input.

Garmin GMA 350H Pilot’s Guide

190-01134-14 Rev. D

GMA 350H Audio Panel

MIC1

– Selects the #1 transmitter for transmitting. COM1 receive is simultaneously selected when this key is pressed allowing received audio from the #1 COM receiver to be heard. COM2 or COM3 receive can be added by pressing the COM2 or COM3 Key. Selection of a second MIC button initiates Split-COM mode (using COM1/COM2 or COM1/COM3). When in Split-COM mode, the pilot is using the lower numbered COM, the copilot is using the higher numbered COM.

MIC2

– Selects the #2 transmitter for transmitting. COM2 receive is simultaneously selected when this key is pressed allowing received audio from the #2 COM receiver to be heard. COM1 or COM3 receive can be added by pressing the COM1 or COM3 Key. Selection of a second MIC button initiates Split-COM mode (using COM1/COM2 or COM2/COM3). When in Split-COM mode, the pilot is using the lower numbered COM, the copilot is using the higher numbered COM.

MIC3

– Selects the #3 transmitter for transmitting. COM3 receive is simultaneously selected when this key is pressed allowing received audio from the #3 COM receiver to be heard. COM1 or COM2 receive can be added by pressing the COM1 or COM2 Key. Selection of a second MIC button initiates Split-COM mode (using COM1/COM3 or COM2/COM3). When in Split-COM mode, the pilot is using the lower numbered COM, the copilot is using the higher numbered COM.

NAV2

PILOT

3D audio on/off for all headset positions.

COPLT

toggle copilot conﬁguration between crew and passenger.

PASS

– Controls the passenger intercom system. Press and hold to

enable/disable passenger muting during reception.

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– When selected, audio from the #2 NAV receiver can be heard.

– Controls the pilot intercom system. Press and hold to toggle

– Controls the copilot intercom system. Press and hold to

Garmin GMA 350H Pilot’s Guide

GMA 350H Audio Panel

SPKR

– Selects and deselects the cabin speaker. COM, NAV, AUX, and MKR receiver audio can be heard on the speaker. Press and hold for 2 seconds for Passenger Address (PA). The SPKR key ﬂashes during PA.

Cursor (CRSR) Control Knob

– Turn to move the cursor (ﬂashing

green or blue annunciator) to the desired source.

Volume (VOL) Control Knob

– Turn the smaller knob to control volume or squelch of the selected source (indicated by the ﬂashing green or blue annunciator). When the volume control cursor is not active press to switch to Blue-Select mode. If the volume control cursor is active, press twice (once to cancel the cursor, twice to activate BlueSelect mode).

NAV

– (GMA 350 H Trafﬁc only) When selected, audio from the NAV

receiver can be heard.

TRFC

– (GMA 350 H Trafﬁc only) When selected, audio from the trafﬁc audio source can be heard. This is usually the TIS Trafﬁc audio (other trafﬁc alerts maybe heard on other alert inputs regardless of the state of this audio selection). TRFC audio is enabled by default on each power cycle.

Garmin GMA 350H Pilot’s Guide

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GMA 350H Audio Panel

FEATURES AND OPERATION

The GMA 350H Audio Panel provides the traditional audio selector functions of microphone and receiver audio selection. The Audio Panel includes an intercom system (ICS), a marker beacon receiver, and a COM clearance recorder. Ambient noise from the aircraft radios is reduced by Avionics Squelch (ASQ). When no audio is detected, ASQ processing further reduces the amount of background noise. The MAN SQ Key toggles between manual and automatic intercom system (ICS) squelch. In automatic ICS squelch mode, threshold adjustments are handled automatically by the system. In manual ICS squelch mode, individual threshold adjustments can be made for the pilot, copilot, and passenger microphones by the crew. The ability to adjust individual thresholds for each ICS position further reduces the amount of background noise from the radios.

Pushbutton keys control audio selection. When a key is selected, a triangular annunciator above the key is illuminated. Annunciator brightness is adjusted automatically by photocell dimming. Key brightness is adjusted by the radio dimming bus control. Three Aux inputs are available for additional avionics or audio devices. During installation, the unit may be conﬁgured in various ways depending on aircraft type and the needs of the pilot.

POWER-UP

The GMA 350H performs a self-test during power-up. During the selftest all Audio Panel annunciator lights illuminate for approximately two seconds. Once the self-test is completed, most of the settings are restored to those in use before the unit was last turned off. For the GMA 350H Trafﬁc unit, the TRFC audio is automatically enabled when the unit is poweredup, regardless of its state prior to the power cycle.

MONO/STEREO HEADSETS

Stereo headsets are recommended when using the GMA 350H. Using a monaural headset in a stereo jack shorts the right headset channel output to ground. While this does not damage the Audio Panel, a person listening on a monaural headset hears only the left channel in both ears. If a monaural headset is used at one of the passenger positions, any other passenger using a stereo headset hears audio in the left ear only.

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Garmin GMA 350H Pilot’s Guide

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