Section 7
Columbia 400 (LC41-550FG)
Description of the Airplane and Systems
Initial Issue of Manual: November 10, 2004
RC050002
Latest Revision Level/Date: A/12-01-2004
7-131
START/STOP
– Starts and stops the Count Up, Count Down, and Flight timers. In
Configuration Mode, steps through configuration pages in reverse.
CRSR
– Initiates starting time entry for the Count Down timer and cancels transponder code
entry. Returns cursor to last code digit within five seconds after entry. Selects changeable
fields in Configuration Mode.
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. Used in Configuration Mode.
8
– Reduces Contrast and Display Brightness when the respective fields are displayed and
enters the number eight into the Count Down timer. Used in Configuration Mode.
9
– Increases Contrast and Display Brightness when the respective fields are displayed and
enters the number nine into the Count Down timer. Used in Configuration Mode.
Function Displays –
The following functions are shown in the display window.
PRESSURE ALT
– Displays the altitude data supplied to the GTX 330 in feet, hundreds of
feet (i.e., flight level), or meters, depending on configuration.
FLIGHT TIME
– Displays the Flight Time, controlled by the START/STOP and CLR keys
when Automated Airborne Determination is configured as normal. Under Automated
Airborne Determination control, the timer begins when liftoff is sensed.
ALTITUDE MONITOR
: Controlled by START/STOP key. Activates a voice alarm and
warning annunciator when altitude limit is exceeded.
OAT/DALT
: Displayed when the GTX 330 is configured with temperature input. Displays
Outside Air Temperature and Density Altitude.
COUNT UP TIMER
– Controlled by START/STOP and CLR keys.
COUNT DOWN TIMER
– Controlled by START/STOP, CLR, and CRSR keys. The initial
Count Down time is entered with the 0 – 9 keys.
CONTRAST
– This page is only displayed if manual contrast mode is selected in
Configuration Mode. The 8 and 9 keys control contrast.
DISPLAY
– This page is only displayed if manual backlighting mode is selected in
Configuration Mode. The 8 and 9 keys control backlighting.
GTX 330 Configuration Mode
– The GTX 330’s configuration is normally set at time of
installation, including the Mode S aircraft address. To view or change any of the GTX 330
configuration parameters, you must access the GTX 330 Configuration Mode. Use caution when
changing configuration. When in doubt, contact your authorized Garmin Aviation Service
Center. Your Garmin dealer can assist in configuration changes. The Configuration Mode should
not be used during flight.
To use the GTX 330 Configuration Mode:
1. Press and hold the FUNC key while powering on the unit using the STBY, ON, or ALT key
(or using an avionics master switch).
2. Press the FUNC key to sequence through the configuration pages. Press the START/STOP
key to sequence in reverse. Reverse sequence stops on the Display Mode page.
3. Use the CRSR key to highlight selectable fields on each page.
4. When a field is highlighted, use the 8 or 9 keys to select changeable fields or the 0 – 9 keys
to enter numeric data.