General; Mode Selection Keys - Extra 200 Information Manual

Pilot´s Operating Handbook
EXTRA 200
914.1

GENERAL

The GARMIN GTX 327 is a panel-mounted TSO.d transponder with the addition of timing
functions. The transponder is a radio transmitter and receiver that 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 327 owner accepts all responsibility for obtaining the proper license before using
the transponder.
The coverage you can expect from the GTX 327 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 327 should be turned off before starting or shutting down aircraft engine.
The GTX 327 Transponder is powered on by pressing the STBY, ALT or ON keys, or by the
AVIONIC MASTER switch. After power on a start-up page will be displayed while the unit performs
a self test.

914.1.1 MODE SELECTION KEYS

OFF
Powers off the GTX 327.
STBY
Powers on the transponder in standby mode. At power on the last active identification code will
be selected. When in standby mode, the transponder will not reply to any interrogations.
ON
Powers on the transponder in Mode A. At power on the last active identification code will be
selected. In this mode the transponder replies to interrogations, as indicated by the Reply Symbol.
Replies do not include altitude information.
ALT
Powers on the transponder in Mode A and Mode C. At power on the last active identification code
will be selected. In ALT mode, the transponder replies to identification and altitude interrogations,
as indicated by the Reply Symbol. Replies to altitude interrogations include standard pressure
altitude received from a separate encoder.
Page Date: 28. February 2006
NOTE
CAUTION
Section 914
GARMIN GTX 327 Transponder
914 - 3