Mode Selection Keys; Code Selection - Extra 200 Information Manual

Section 915
GARMIN GTX 330 Transponder

915.1.1 MODE SELECTION KEYS

OFF
Powers off the GTX 330.
STBY
Selects the standby mode displaying the last active identification code. When in standby mode,
the transponder will not reply to any interrogations.
ON
Selects 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.

915.1.2 CODE SELECTION

Code selection is done with eight keys (0 - 7) that provide 4,096 active identification codes.
Pushing one of these keys begins the code selection sequence. The new code will not be activated
until the fourth digit is entered. Pressing the CLR key will move the cursor back to the previous
digit. Pressing the CLR key when the cursor is on the first key of the code, or pressing the CRSR
key during code entry, will remove the cursor and cancel 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, contrast and display brightness, and in the Configuration 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)
0021 The VFR code commonly used in Germany (default is set to 0021 at time of
installation)
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)
915 - 4
Pilot´s Operating Handbook
EXTRA 200
Page Date: 28. February 2006