190-00709-00 Rev. A
Garmin G1000 Pilot’s Guide for the Socata TBM 850
4-31
AUDIO PANEL AND CNS
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, the transponder can be returned to Ground Mode
by selecting the
GND
Softkey.
GND
Mode
Figure 4-36 Ground Mode
STANDBY MODE (MANUAL)
NOTE:
In Standby Mode, the IDENT function is inhibited.
Standby Mode can be selected at any time by selecting the
STBY
Softkey. 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.
STBY Mode (White
Code Number and
Mode)
Figure 4-37 Standby Mode
MANUAL ON MODE
ON Mode can be selected at any time by selecting 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.
ON Mode
(No Altitude
Reporting)
Figure 4-38 ON Mode
