
Garmin G1000 Cockpit Reference Guide for the Socata TBM 850
190-00708-00 Rev. A
4-5
SECTION 4 – NAV/COM &
TRANSPONDER
Figure 4-11 Ground Mode
Standby Mode (Manual)
Select the
STBY Softkey. In Standby Mode, the tran-
sponder does not reply to interrogations, but new codes
can be entered.
STBY Mode (White
Code Number and
Mode)
Figure 4-12 Standby Mode
Manual ON Mode
Select the
ON Softkey. ON Mode generates Mode A
and Mode S replies, but Mode C altitude reporting is in-
hibited.
ON Mode
(No Altitude
Reporting)
Figure 4-13 ON Mode
Altitude Mode (Automatic or Manual)
Altitude Mode is automatically selected when the air
-
craft becomes airborne. Altitude Mode may also be se-
lected manually by selecting the ALT Softkey.
All transponder replies requesting altitude information
are provided with pressure altitude information.
ALT Mode (Mode C
Altitude Reporting)
Figure 4-14 Altitude Mode
Reply Status
When the transponder sends replies to interrogations,
an “R” indication appears momentarily in the reply status
field.
Figure 4-15 Reply Indication
Reply
Indication
Code Selection
VFR Code Selection
1)
Select the
XPDR
Softkey to display the
transponder Mode Selection softkeys.
2)
Select the
VFR
Softkey to enter the VFR code.
Selecting the
VFR
Softkey again restores the
previous identification code.
NOTE: The pre-programmed VFR Code is set at
the factory to 1200.
Enter Code Using Softkeys
1)
Select the
XPDR
Softkey to display the
transponder Mode Selection softkeys.
2)
Select the
CODE
Softkey to display the
transponder Code Selection softkeys, which
includes the digit softkeys.
3)
Press the appropriate digit softkeys to enter
the code in the four-digit code field of the
Transponder Status Box. When the last digit
is entered, the transponder code becomes
active.
When entering a code, select the
BKSP
Softkey
as needed to back up and change code
digits.
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