Garmin GTX GTX 330D Pilot's Manual - Page 7

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Also for Garmin GTX GTX 330D: Pilot's Manual Addendum (50 pages), Pilot's Manual Addendum (50 pages), Pilot's Manual (13 pages), Installation Manual (49 pages)

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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 take off, continue accumulating time at take off, 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.

To operate the Count Down timer:

1) Press the FUNC key until COUNT DOWN is displayed.

2) Press CRSR and use the 0 - 9 keys to set the initial time. All digits must be entered (use

the 0 key to enter leading zeros).

3) Press START/STOP to begin count down.

4) Press START/STOP again to pause the timer.

5) When the Count Down timer expires, the COUNT DOWN banner is replaced with a

flashing EXPIRED, the message "Timer Expired" is heard, and the time begins counting up.

6) Press CLR to reset the timer to the initial time value.

If the GTX 330 is configured for Automated Airborne Determination, normal operation

begins when take off is sensed. When the aircraft is on the ground the screen automatically

displays GND. The transponder does not respond to ATCRBS interrogations when GND

is annunciated. When a delay time is set (dependent upon installation configuration), the

GTX 330 waits a specified length of time after landing before changing to GND mode.

If the unit detects an internal failure, the screen displays FAIL. When FAIL is annunciated

no transponder data is transmitted.