Garmin G900X Pilot's Manual page 148

AUDIO PANEL AND CNS
STANDBY MODE (MANUAL)
In Standby Mode, the IDENT function is inoperative.
NOTE:
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.
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.
ALTITUDE MODE (AUTOMATIC OR MANUAL)
Altitude Mode is automatically selected when the aircraft becomes airborne. Altitude Mode may also be
selected manually by selecting 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.
4-26
Figure 4-31 Standby Mode
Figure 4-32 ON Mode
Figure 4-33 Altitude Mode
Garmin G900X Pilot's Guide
STBY Mode (White
Code Number and
Mode)
ON Mode
(No Altitude
Reporting)
ALT Mode
(Mode C Altitude
Reporting)
190-00726-00 Rev. A