Garmin G1000 Manual page 169

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
reply status field of the Transponder Data Box.
190-00709-05 Rev. D
Figure 4-49 ON Mode
Figure 4-50 Altitude Mode
Figure 4-51 Reply Indication
Garmin G1000 Pilot's Guide for the Socata TBM 850/900
AUDIO PANEL AND CNS
ON Mode
(No Altitude
Reporting)
ALT Mode
(Mode C Altitude
Reporting)
Reply to
Interrogation
155