Garmin G900X Pilot's Manual page 179

GROUND MODE
Ground Mode is normally selected automatically when the aircraft is on the ground. The transponder
powers up in the last mode it was in when shut down. Ground Mode can be overridden by selecting any one
of the Mode Selection Softkeys. A green GND indication and transponder code appear in the mode field of
the Transponder Data Box. 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.
When Standby Mode has been selected on the ground, press the GND Softkey to return the transponder
to Ground Mode.
STANDBY MODE (MANUAL)
In Standby Mode, the IDENT function is inhibited.
NOTE:
Press the STBY Softkey at any time to select Standby Mode. In Standby, the transponder does not reply
to interrogations, but new codes can be entered. When Standby is selected, a white STBY indication and
transponder code appear in the mode field of the Transponder Data Box. In all other modes, these fields
appear in green.
MANUAL ON MODE
Press the ON Softkey at any time to select ON Mode. ON Mode generates Mode A and Mode S replies, but
Mode C altitude reporting is inhibited. In ON Mode, a green ON indication and transponder code appear in
the mode field of the Transponder Data Box.
190-00726-00 Rev. J
Figure 4-37 Ground Mode
Figure 4-38 Standby Mode
Figure 4-39 ON Mode
Garmin G900X Pilot's Guide
AUDIO PANEL AND CNS
GND
Mode
STBY Mode (White
Code Number and
Mode)
ON Mode
(No Altitude
Reporting)
163