190-00734-11
GTX 33X and GTX 3X5 ADS-B Maintenance Manual
Rev. 6
Page 3-6
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.
