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™
GTX 328
Mode S Transponder
pilot’s guide
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© Copyright 2007 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
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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
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The GTX 328 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 328. 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
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Important Codes: 1200 The VFR code for any altitude in the US (Refer to ICAO standards elsewhere) 7000 The VFR code commonly used in Europe (Refer to ICAO standards) 7500 Hijack code (Aircraft is subject to unlawful interference) 7600 Loss of communications 7700 Emergency 7777 Military interceptor operations (Never squawk this code) 0000 Military use Avoid selecting codes 0000, 7500, and all codes in the 7600-7777 range. These codes trigger special indicators in automated facilit
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Function Display PRESSURE ALT: Displays the altitude data supplied to the GTX 328 in feet, hundreds of feet (i.e., flight level), or meters, (dependent upon installation configuration. FLIGHT TIME: Timer start is configured as either Manual or Automatic. When Manual, displays the Flight Time, controlled by the START/STOP and CLR keys. When Automatic, the timer begins when take off is sensed. ALTITUDE MONITOR: Controlled by START/STOP Key. Activates a voice alarm and warning annunciator when
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Timer Operation To operate the Flight Timer: 1. Press the FUNC Key until ‘FLIGHT TIME’ is displayed. 2. If the GTX 328 is configured with Automated Airborne Determination, the timer begins automatically when the unit senses that the aircraft has become airborne. The timer may be reset to zero at every take off, continue accumulating time at take off or may be controlled manually. 3. If desired, press START/STOP to pause or restart the timer. 4. Press CLR to reset the timer to zero. 5. If the
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Mode S Data Transmission In addition to 4096 code and pressure altitude, the GTX 328 is capable of transmitting aircraft identification, transponder capability and maximum speed range. “Aircraft Identification” is commonly referred to as FLT ID (Flight Identification). The GTX 328 may be configured by the installer to allow the flight crew to enter FLT ID for each flight. An example is when air-carrier service requires changing the FLT ID. The FLT ID may consist of the aircraft registration or
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Each time an alphanumeric character is entered, press the CRSR Key to move the cursor to the next blank field. Pressing the CLR Key moves the cursor back to the previous character. After the complete FLT ID is entered, press the CRSR Key to move the cursor to the “OK?” field. Press CRSR again to accept the FLT ID. When FLT ID entry is complete the transponder begins normal operation. If an error is made while entering a FLT ID, press the CLR Key to back up to any point, including highlighti
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© 2007 Garmin Ltd. or its subsidiaries Garmin International, Inc. 1200 East 151st Street, Olathe, Kansas 66062, U.S.A. Garmin (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9AQ, U.K. Garmin Corporation No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan www.garmin.com Part Number 190-00420-03 Rev. A
