General - Extra 200 Information Manual

Pilot´s Operating Handbook
EXTRA 200
915.1

GENERAL

The Garmin GTX 330 panel mounted Mode S Transponder is a radio transmitter and receiver that
fulfills the role of the airborne beacon equipment according to the requirements of the Air Traffic
Radar Beacon System (ATCRBS). Its functionality includes replying to ATCRBS Mode A and C
and Mode S interrogations. The Mode S function will allow the ground station to individually select
the aircraft by its Aircraft Address assigned to the aircraft by the aviation agency.
It operates on radar frequencies, receiving ground radar interrogations at 1030 MHz and
transmitting a coded response of pulses to ground-based radar on a frequency of 1090 MHz. The
GTX 330 is equipped with IDENT capability that activates the Special Position Identification (SPI)
pulse for 18 seconds. Mode S transmit/receive capability also requires 1090 MHz transmitting
and1030 MHz receiving for Mode S functions.
In addition to displaying the code, reply symbol and mode of operation, the GTX 330 screen will
display pressure altitude and timer functions. The displayed pressure altitude may not agree with
the aircraft's baro-corrected altitude under non standard conditions. The unit also features flight
timers.
The Traffic Information Service (TIS) is not available in this installation.
The GTX 330 owner accepts all responsibility for obtaining the proper license before using
the transponder.
The coverage you can expect 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 should be turned off before starting or shutting down aircraft engine.
The GTX 330 Transponder is automatically powered on by the respective AVIONIC MASTER
switch or when previously manually powered off while AVIONIC MASTER switch is on by pressing
the STBY, ALT or ON keys. After power on, a start-up page will be displayed while the unit
performs a self test.
Page Date: 28. February 2006
NOTE
CAUTION
Section 915
GARMIN GTX 330 Transponder
915 - 3