Garmin GTX 330, GTX 330D User Manual 2

Mode S Transponder

Pilot’s Guide

GTX

™

330/330D

© Copyright 2002, 2007, 2008

Garmin Ltd. or its subsidiaries

All Rights Reserved

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 prior written consent 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 and to print one copy of this manual or of any
revision hereto, 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.

This manual is written for software version 6.00 or later, and is not suitable for earlier software
versions. Some differences in operation may be observed when comparing the information in
this manual to earlier or later software versions.

Software License Agreement

BY USING THE GTX 330, YOU AGREE TO BE BOUND BY THE TERMS AND CONDITIONS
OF THE FOLLOWING SOFTWARE LICENSE AGREEMENT. PLEASE READ THIS
AGREEMENT CAREFULLY.

Garmin grants you a limited license to use the software embedded in this device (the
“Software”) in binary executable form in the normal operation of the product. Title, ownership
rights and intellectual property rights in and to the Software remain in Garmin.

You acknowledge that the Software is the property of Garmin and is protected under the
United States of America copyright laws and international copyright treaties. You further
acknowledge that the structure, organization and code of the Software are valuable trade
secrets of Garmin and that the Software in source code form remains a valuable trade secret of
Garmin. You agree not to decompile, disassemble, modify, reverse assemble, reverse engineer
or reduce to human readable form the Software or any part thereof or create any derivative
works based on the Software. You agree not to export or re-export the Software to any country
in violation of the export control laws of the United States of America.

CAUTION: The GTX 330 should be turned off before starting or shutting
down aircraft engine(s).

NOTE: Reference to the GTX 330 Transponder throughout this Pilot’s Guide
includes operation of the GTX 330D Diversity Transponder also.

NOTE: Contact a Garmin authorized dealer for software updates.

September 2008 Part Number 190-00207-00 Rev. F Printed in USA

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 or 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 alteration 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 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, call Garmin Customer Service at one of the
numbers shown below.

Garmin International, Inc. Garmin (Europe) Ltd.

1200 East 151st Street Liberty House, Bulls Copse Road

Olathe, Kansas 66062, U.S.A. Hounsdown Business Park

Phone: [phone] Southampton, SO40 9RB, U.K.
FAX: [phone] Phone: [phone]

FAX: [phone]

NOTE: It is the responsibility of the GTX 330 owner to obtain proper
licensing before using the transponder.

NOTE: The coverage expected from the GTX 330 is limited to line of sight.
Low altitude or aircraft antenna shielding by the aircraft itself may result
in reduced range. Range can be improved by climbing to a higher altitude.
It may be possible to minimize antenna shielding by locating the antenna
where dead spots are only noticed during abnormal flight attitudes.

The GTX 330 transponder is powered on by pressing the STBY, ALT or ON keys, or by a remote avionics master
switch (if applicable). After power on, a start-up page is displayed while the unit performs a self test.

Mode Selection Keys

OFF  Powers off the GTX 330. Pressing STBY, ON, or
ALT

key powers on the transponder displaying the last

active

identification code.

STBY  Selects the standby mode. When in standby mode,
the transponder will not reply to any interrogations.

ON  Selects Mode A. In this mode, the transponder replies to
interrogations, as indicated by the Reply Symbol ( ). Replies do not include altitude
information.

ALT  Selects Mode A and Mode C. In ALT mode, the transponder replies to
identification and altitude interrogations as indicated by the Reply Symbol ( ). Replies
to altitude interrogations include the standard pressure altitude received from an external
altitude source, which is not adjusted for barometric pressure. The ALT mode may be
selected in aircraft not equipped with an optional altitude encoder; however, the reply
signal will not include altitude information.

Any time the function ON or ALT is selected the transponder becomes an active part of
the Air Traffic Control Radar Beacon System (ATCRBS). The transponder also responds to
interrogations from TCAS equipped aircraft.

Code Selection

Code selection is done with eight keys (0 – 7) providing 4,096 active identification codes.
Pushing one of these keys begins the code selection sequence. Digits that are not yet entered
appear as dashes. The new code is activated when the fourth digit is entered. Pressing the CLR
key moves the cursor back to the previous digit. Pressing the CLR key when the cursor is on
the first digit of the code, or pressing the CRSR key during code entry, removes the cursor and
cancels data entry, restoring the previous code. You may press the CLR key up to five seconds
after code entry is complete to return the cursor to the fourth digit. The numbers 8 and 9 are not
used for code entry, only for entering a Count Down time, and for adjusting contrast and display
brightness.