5
190-01004-04 Rev. N
GTN 625/635/650 Cockpit Reference Guide
Transponder
TRANSPONDER
Transponder Control
Squawk Code Field
Transponder
Mode
Active
Transponder
G
Transponder Control
Transponder ID
Touch the Squawk Code Field to enter frequency for either Transponder 1
(XPDR1) or Transponder 2 (XPDR2).
IDENT
Touch
IDENT
to activate the transponder’s IDENT function. The key text
remains gray and will change to green when IDENT mode is active.
Current
Transponder
Mode
Transponder Panel Page (Non-GDL 88 Installations with Mode C Transponder)
Standby:
Touch to place transponder in Standby mode. It is still
powered, but will not transmit information. STBY displays in the
squawk code field.
Ground:
Touch to place transponder in Ground mode. Refer to the
documentation provided with your GTX transponder for specific
information on this mode of operation.
On:
Touch to turn transponder On for Mode A operation. Will
transmit the squawk code when interrogated. ON displays in
the squawk code field.
Altitude
Reporting:
Touch for Mode C operation. The transponder will be on and
will transmit its squawk code and altitude when interrogated.
ALT displays in the squawk code field.
VFR:
Touch to set the squawk code to 1200.
Enable ES:
Touch to toggle extended squitter.