Transponder Mode Selection - Garmin G3X Pilot's Manual

TRANSPONDER MODE SELECTION

The transponder mode will automatically switch between GND Mode and ALT Mode.
The mode can also be manually set using the softkeys.
Selecting a transponder mode:
1) From the full-screen PFD and/or the split-screen PFD Page, press the XPDR
Softkey.
2) Press the MODE Softkey.
3) Press the desired mode softkey (STBY / GND, ON, or ALT). Pressing and
holding the STBY Softkey activates Ground (GND) Mode and the STBY
Softkey becomes the GND Softkey.
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.
190-01115-00 Rev. K Garmin G3X Pilot's Guide
CNS Interface
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