Garmin manual Keys for Other GTX 330 Functions

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When the transponder code is changed, a notification is sent to ATC by the GTX 330. This notification is temporary and may not be sent if the GTX is not active (i.e., set to ON, ALT or GND) when the code is changed.

NOTE: On a dual transponder installation, change the code on the active transponder. This ensures the notification is transmitted to ATC.

Keys for Other GTX 330 Functions

IDENT Pressing the IDENT key activates the Special Position Identification (SPI) Pulse for 18 seconds, identifying your transponder return from others on the air traffic controller’s screen. The word IDENT will appear in the upper left corner of the display during this time.

VFR Sets the transponder code to the pre-programmed VFR code selected during installation configuration (this is set to 1200 at the factory). Pressing the VFR key again restores the previous identification code. If the VFR Key is pressed when disabled (dependent upon installation configuration) a VFR Key Disabled message appears to indicate that no operation took place.

FUNC Changes the page shown on the right side of the display. Display data includes Pressure Altitude, Flight Time, Altitude Monitor, Count Up, and Count Down timers. Also displays Outside Air Temperature, Density Altitude, Contrast, Display, and ADS-B Operation (dependent upon installation configuration).

START/STOP Starts and stops the Altitude Monitor, Count Up, Count Down, and Flight timers.

CRSR Initiates starting time entry for the Count Down timer and cancels transponder code entry.

CLR Resets the Count Up, Count Down, and Flight timers. Cancels the previous keypress during code selection and Count Down entry. Returns cursor to the fourth code digit within five seconds after entry.

8 Reduces Contrast and Display Brightness when the respective fields are displayed (dependent upon installation configuration) and enters the number eight into the Count Down timer.

9 Increases Contrast and Display Brightness when the respective fields are displayed (dependent upon installation configuration) and enters the number nine into the Count Down timer.

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Contents GTX 330/330D Software License Agreement Copyright 2002, 2007, 2008 All Rights Reserved44/0870.8501251 Limited WarrantyCode Selection Mode Selection KeysKeys for Other GTX 330 Functions Function Display Count UP Timer Controlled by START/STOP and CLR keysTimer Operation To operate the Flight Timer Altitude Trend IndicatorTo operate the Count Up timer To operate the Count Down timerAltitude Monitor Operation To operate the Altitude Monitor Mode S Data TransmissionFailure Annunciation Entering a Flight ID Number Traffic Information Service GTX 330D Diversity Mode S TransponderGTX 330 ES Options Audio Alerts