Garmin GTX 330D Maintenance Manual page 26

START/STOP Starts and stops the altitude monitor, count up, count down, and flight timers.
CRSR Initiates entry of the starting time for the count down timer and cancels transponder code
entry. Selects changeable fields in Configuration mode. If using software v8.02 or later,
holding the CRSR key during power on will place the unit into a Ground Test mode that
forces the aircraft into an airborne status for testing purposes.
CLR Resets the count up, count down, and flight timers. Cancels the previous key press during
code selection and count down 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.
Code Selection
Code selection is entered with eight keys (0 – 7) providing 4,096 active identification codes. Pushing one
of these keys begins the code selection sequence. The new code is not activated until the fourth digit is
entered. Pressing the CLR key moves the cursor back to the previous digit. Pressing the CLR key when
the cursor is on the first digit of the code, or pressing the CRSR key during code entry, removes the cursor
and cancels 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 data selection in the
Configuration mode.
190-00734-11
Rev. 6
GTX 33X and GTX 3X5 ADS-B Maintenance Manual
Page 3-3