Timer Operation - Garmin GTX 330 Pilot's Manual

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 vertical speed rate. The sensitivity of these arrows is
initially set during transponder installation.

Timer Operation

To operate the Flight Timer:
1) Press the FUNC key until FLIGHT TIME is displayed.
2) If the GTX 330 is configured with Automated Airborne Determination, the timer begins
automatically when the unit senses that the aircraft has become airborne. The timer
may be reset to zero at every takeoff, continue accumulating time at takeoff, or may be
controlled manually.
3) If desired, press START/STOP to pause or restart the timer.
4) Press CLR to reset the timer to zero.
5) If the timer is configured to start automatically it will stop when the Automated Airborne
Determination senses that the aircraft is on the ground.
To operate the Count Up timer:
1) Press the FUNC key until COUNT UP is displayed.
2) If necessary, press CLR to reset the Count Up timer to zero.
3) Press START/STOP to begin count up.
4) Press START/STOP again to pause the timer.
5) Press CLR to reset the timer to zero.
CONTRAST: This page is only displayed if manual contrast mode
is selected during installation configuration. Contrast is controlled by
the 8 and 9 keys.
DISPLAY: This page is only displayed if manual backlighting mode is
selected during installation configuration. Backlighting is controlled by
the 8 and 9 keys.
ADS-B: This page is displayed if the ADS-B pilot set option is se-
lected during installation configuration of an ES enabled GTX 330.
ADS-B defaults to ON at each power cycle. ADS-B ON/OFF is con-
trolled by the START/STOP key. Turn ADS-B OFF only at the request
of ATC. NO ADSB will appear in the upper left corner when ADS-B
is configured ON but cannot transmit the position of the aircraft, or
when ADS-B TX is manually turned OFF.