GTX™ 330 Mode S Transponder pilot’s guide
© Copyright 2002 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.
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 or labor, provided that the customer shall be responsible for any transportation cost.
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. (See your Garmin dealer for software upgrades.) 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.
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 (Not enterable) Avoid selecting code 7500 and all codes in the 7600-7777 range. These codes trigger special indicators in automated facilities.
Function Display PRESSURE ALT: Displays the altitude data supplied to the GTX 330 in feet, hundreds of feet (i.e., flight level), or meters, depending on configuration. FLIGHT TIME: Displays the Flight Time, controlled by the START/STOP and CLR keys when Automated Airborne Determination is configured as normal. Under Automated Airborne Determination control, the timer begins when lift off is sensed. ALTITUDE MONITOR: Controlled by START/STOP key.
Altitude Trend Indicator When the ‘PRESSURE ALT’ page is displayed, an arrow may be displayed to the right of the altitude, indicating that the altitude is increasing or decreasing. One of two sizes of arrows may be displayed depending on the rate of climb/descent. The sensitivity of these arrows is set using the GTX 330 Configuration Mode vertical speed rate. Timer Operation To operate the Flight Timer: 1. Press the FUNC key until ‘FLIGHT TIME’ is displayed. 2.
GTX 330 Mode S Transponder Features Traffic Information Service The GTX 330 Mode S transponder provides a data link for Traffic Information Service (TIS). TIS provides a graphic display of traffic information in the cockpit for non-TCAS equipped aircraft. Transponder-equipped aircraft can be displayed within the coverage volume on indicators such as a Garmin 430 or 530, within range of your position. Aircraft without an operating transponder are invisible to TIS.
