Garmin GTX 330D Maintenance Manual page 29

FUNC In normal mode, pressing the FUNC key changes the subpage group shown on the right side
of the display. Subpages include flight ID, pressure altitude, flight time, altitude monitor,
system count up, and count down timers. In the Configuration mode, steps through the
function pages.
ENT Confirms entry for selected item and moves the cursor to the next editable item, or function
selection, in configuration and normal operation. Starts and stops the altitude monitor, count
up, count down, and flight timers.
CRSR Selects changeable fields in configuration and normal operation. Initiates entry of the
starting time for the count down timer and cancels transponder code entry. 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, count down entry, or flight ID entry. Used in Configuration mode to scroll
through the function pages.
8 Used as a scroll-up key to navigate through page groups in normal and configuration mode.
9 Used as a scroll-down key to navigate through page groups in normal and 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. The numbers 8 and 9 are not used for code entry, only
for flight ID entry, count down time, aircraft tail number entry, and data selection in Configuration and
Normal mode.
Configuration Mode
To enter configuration mode, press and hold the ENT key, then energize the unit. To exit configuration
mode, press and hold the OFF key until the unit de-energizes.
 To cycle through the pages, press the FUNC key
 To access items on the page, press the CRSR key
 To cycle through the selections of an item on the page, press the 8 or 9 key
 To scroll up or down on the page when nothing is selected, press the 8 or 9 key
 To move within the page, press the ENT key
 To move to previous selection on the page, press the CLR key
 To exit the page, press the FUNC key
GTX 3X5 units may also be configured using the GTX 3X5 Install Tool. For configuration using the
GTX 3X5 Install Tool, refer to section 3.5.
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Rev. 6
GTX 33X and GTX 3X5 ADS-B Maintenance Manual
Page 3-6