Garmin GTX 320A, Installation Manual

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GTX 320/320A Installation Manual Page 3-3
190-00133-01 Rev M
3.2.3 IDENT Button
On occasion, the controller will request “SQUAWK IDENT”. Respond by momentarily pressing and releasing
the IDENT button. Pressing the IDENT button activates the Special Position Identification Pulse (SPI) for
approximately 20 seconds identifying your transponder return from other aircraft on the controller’s scope.
3.2.4 Reply Light
The reply light will blink each time the transponder replies to ground interrogation. The reply light also remains
lit during the IDENT time interval.