Garmin G2000 Cockpit Reference Manual page 36

Nav/Com/XPDR/Audio Panel
Selecting a Transponder Mode:
1) Touch the Transponder Mode Button to display the Transponder Screen.
2) Touch a Mode Button to activate the transponder mode.
Transponder
Mode Buttons
Transponder Mode
Altitude Reporting
(ALT)
On
Ground (GND)
Standby (STBY)
FLIGHT ID
20
Garmin G2000 Cockpit Reference Guide for the Cessna Corvalis T240
Transponder Mode Selection
Altitude Reporting Mode is automatically selected when the aircraft
becomes airborne. Altitude Reporting Mode may also be selected
manually by selecting the Altitude Reporting Button. (ADSB-OUT)
ON Mode can be selected at any time by selecting the ON Button. ON
Mode generates Mode A and Mode S replies (ADSB-OUT), but Mode C
altitude reporting is inhibited.
Ground Mode is normally selected automatically when the aircraft is on
the ground. In Ground Mode, the transponder does not allow Mode A
and Mode C replies, but it does permit acquisition squitter and replies
to discretely addressed Mode S interrogations (ADSB-OUT).
Standby Mode can be selected at any time by selecting the Standby
Button. In Standby, the transponder does not reply to interrogations,
but new codes can be entered (NO ADSB-OUT).
The Mode S Transponder reports aircraft identification as the aircraft
registration number. The Flight ID cannot be changed by the pilot.
Description
190-01264-01 Rev. A