Pilot’s Guide
G7490-07
XPNDR (Transponder) Select Knob
This knob is used to activate transponder 1 or transponder 2. Only one transponder can be
active at one time.
IDENT (Identification) Button
This button is used to transmit the ATC radar aircraft identification. Push this button
when requested by air traffic control (“Squawk Ident”).
XPNDR (Transponder) FAIL Indicator
This indicator is illuminated when the selected transponder fails (will not illuminate
during failure if Mode Select Knob is set to STBY).
FID (Flight Identification) Indicator
This indicator illuminates when the Flight ID mode is selected. This indicator flashes
when a Flight ID (Call Sign and/or Flight Number) is being entered.
ATC (Air Traffic Control) Indicator
This indicator illuminates when the ATC mode is selected.
Display
The display can show up to eight alphanumeric digits. An ATC code consists of only four
numeric digits. A Flight ID code consists of a combination of letters (airline call sign)
and numbers (flight number).
Keypad Buttons
These alphanumeric buttons are pressed to enter the ATC or the Flight ID code. Refer to
“
Setting the ATC Code
” and “
Setting the Flight ID
” sections below.
CLR (Clear) Button
Use the CLR button to erase the last entered digit. Hold the CLR button for 2 seconds to
erase all digits.
ENT (Enter) Button
Press the ENT button to validate and transmit the Flight ID code. The FID indicator will
stop blinking when you press the ENT button.
ATC/FID (Air Traffic Control/Flight Identification) Button
This button is used to switch between the ATC mode and the Flight ID mode.
ABS (Absolute) Button
Press and hold the ABS button to momentarily change the altitudes shown on the TCAS
display from “relative” to “absolute”. See “Panel Operation” below for more details.
G7490-07 Pilot’s Guide Rev 01
COPYRIGHT © Gables Engineering, July 28, 2004
Page 2 of 17
