User Guide

Garmin G1000 Pilot’s Guide for the Diamond DA42
190-00649-00 Rev. A4-42
AUDIO PANEL AND CNS
4.8 TRANSPONDER OPERATION
MODE SELECTION
Mode selection can be automatic (Ground and Altitude Modes) or manual (Standby, ON, and Altitude Modes).
The STBY , ON, and ALT Softkeys can be accessed by pressing the XPDR Softkey.
GROUND MODE (AUTOMATIC)
NOTE: Ground Mode can be overridden by pressing any one of the Mode Selection softkeys.
Ground Mode is automatically selected when the aircraft is on the ground. 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.
Figure 4-47 Ground Mode
STANDBY MODE (MANUAL)
NOTE: In Standby Mode, the IDENT function is inhibited.
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 is selected, a white
STBY indication
and transponder code appear in the mode field of the Transponder Data Box.
Figure 4-48 Standby Mode
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.
Figure 4-49 ON Mode