Garmin G1000 Pilot's Manual page 114

AUDIO PANEL AND CNS
IDENT FUNCTION
In Standby Mode, the IDENT Softkey is inoperative.
NOTE:
Pressing the IDENT Softkey sends an ID indication to Air Traffic Control (ATC). The ID return distinguishes
one transponder from all the others on the air traffic controller' s radar screen.
The IDENT Softkey appears in all levels of transponder softkeys. When the IDENT Softkey is pressed,
a green 'IDENT' indication is displayed in the mode field of the Transponder Data Box for a duration of 18
seconds.
When the IDENT Softkey is pressed while in Mode or Code Selection, the system reverts to the top-level
softkeys.
4-30
Figure 4-42 IDENT Indication
Garmin G1000 Pilot's Guide for the Diamond DA40/40F
IDNT
Indication
190-00592-02 Rev. A