Ground Mode - Garmin G3X Pilot's Manual

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. To manually
select Ground Mode, press and hold the STBY Softkey. A green GND indication and
transponder code appear in the mode field of the Transponder Data Box and the STBY
Softkey becomes the GND Softkey. 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.
Deselect (press) the GND Softkey to return to Standby Mode.
STANDBY MODE (MANUAL)
Standby Mode can be selected at any time by pressing the STBY Softkey. In Standby,
the transponder does not reply to interrogations, but new codes can be entered. When
Standby Mode is selected, a white STBY indication and transponder code appear in the
mode field of the Transponder Data Box.
MANUAL ON MODE
ON Mode can be selected at any time by pressing the ON Softkey. 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.
ALTITUDE MODE (AUTOMATIC OR MANUAL)
Altitude Mode is automatically selected when the aircraft becomes airborne. Altitude
Mode may also be selected manually by pressing the ALT Softkey.
If Altitude Mode is selected, a green ALT indication and transponder code appear
in the mode field of the Transponder Data Box, and all transponder replies requesting
altitude information are provided with pressure altitude information.
REPLY STATUS
When the transponder sends replies to interrogations, a white R indication appears
momentarily in the Transponder Data Box.
190-01115-00 Rev. J Garmin G3X Pilot's Guide
CNS Interface
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