Page 5-2
GTX 327 Installation Manual
Revision K
190-00187-02
NOTE
Any time the function switch is in the ON or ALT position the transponder
becomes an active part of the Air Traffic Control Radar Beacon System
(ATCRBS). The transponder also responds to interrogations from TCAS equipped
aircraft.
•
IDENT
Pressing the IDENT key activates the Special Position Identification (SPI) Pulse
for 18 seconds, identifying the transponder return from others on an air traffic
controller’s screen. During the IDENT period, the word ‘IDENT’ appears in the
upper left corner of the display.
•
VFR
Sets the transponder code to the pre-programmed VFR code selected in
Configuration mode (set to 1200 at the factory). Pressing the VFR key again will
restore the previous identification code.
•
FUNC
Changes the page shown on the right side of the display. Display data includes
Pressure Altitude, Flight Time, Count Up and Count Down timers. In the
Configuration mode, steps through the function pages.
Pressure Alt:
Displays the altitude data supplied to the GTX 327 in feet,
flight level format or meters, depending on configuration
setup.
Flight Time:
Displays the Flight Time which is controlled as configured on
Configuration #1 page.
Count Up Timer:
Controlled by START/STOP and CLR buttons.
Count Down Timer: Controlled by START/STOP, CLR, and CRSR buttons.
Count down time entered with 0 – 9 buttons.
Contrast:
Controlled by 8 and 9 buttons.
Display Brightness: Controlled by 8 and 9 buttons
•
START/ STOP
Starts and stops the Count Up, Count Down and Flight Time. In the
Configuration mode, reverses through the function pages.
•
CRSR
Activates the change fields for the Count Down timer.
•
CLR
Resets the Count Up, Count Down and Flight timers. Returns cursor to
fourth code digit up to five seconds after code entry is complete.
•
8
Reduces screen Contrast and Display Brightness. Enters the number eight
into the Count Down timer.
•
9
Increases screen Contrast and Display Brightness. Enters the number nine
into the Count Down timer.
