Garmin GMA 240 User Manual

GMA 240

Pilot’s Guide

Copyright © 2008 Garmin Ltd. or its subsidiaries. All rights reserved.

This manual reflects the operation of GMA 240 units with mod level 0 or later.
Some differences in operation may be observed when comparing the information
in this manual to earlier or later Mod status levels.

Garmin International, Inc., 1200 East 151st Street, Olathe, Kansas 66062, U.S.A.
Tel: [phone] Fax: [phone]

Garmin AT, Inc., 2345 Turner Road SE, Salem, OR 97302, U.S.A.
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Tel: [phone] Fax: [phone]

Garmin Corporation, No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan
Tel: [phone] Fax: [phone]

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.

June, 2008 190-00917-00 Rev. A Printed in the U.S.A.

LIMITED WARRANTY

This Garmin product is warranted to be free from defects in materials or
workmanship for one year 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.

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.

CAUTION:

If monaural headsets are plugged into stereo jacks,
power supply current increases, which may cause power supply
fuse damage.

GMA 240 Audio Panel

Pilot’s

Squelch

Knob

ON/OFF

and Pilot’s

Volume

Knob

Copilot/
Passenger
Squelch Knob

Copilot/
Passenger/
Music Volume
Knob

Music On/

Off Key

Music 1 or 2

Select Key

Com Receiver

Keys

Transceiver

Selection Keys

Volume/Squelch: Rotating the Pilot Volume Knob (left small
knob) controls the ON and OFF function (Full CCW detent is
OFF). The large left knob controls Pilot squelch.

Pulling the right volume knob (small knob) controls music
volume, pushing in controls Copilot and passenger volume.
The large right knob controls Copilot and passenger squelch.

Monitor Mute

Telephone

Key

Key

Pilot ICS
Isolation

Key

Nav Receiver and

AUX Audio Keys

Intercom

Mute Key and

Music Audio

or Telephone

Radio Mute

Key

Input Jack

4

Garmin GMA 240 Pilot’s Guide

190-00917-00 Rev. A