Garrecht Avionik GmbH
VT-01 Transponder
User manual
Dokument 01.0200.10E
Revision: 1.3
8
13.02.07
3. Normal Operation
When in normal operation mode, the following screen is shown by the system:
The current pressure altitude (related to 1013,25 hPa) will be shown as Flightlevel
(FL) in the upper left corner of the LCD screen.
Replies are indicated by a blinking <R> in the lower left corner of the LCD screen.
3.1. Selecting a Mode
The current mode is shown in the centre
of the bottom line of the screen. Pressing
the mode key circulates through the
following modes:
Screen
Mode
Description/function
SBY
Standby
Standby - System is switched on, no replies
or squitters will be sent.
ON
System operating,
no alticode will be
replied
Selected reply code will be replied for Mode-
A/C interrogations, altitude information is set
to zero, squittering is enabled, Mode-S inter-
rogations will be replied. Switch to this mode
only if required by the ATC .
ALT
System operating,
alticode will be
replied
Selected reply code will be replied for Mode-
A/C interrogations, altitude information is set
to indicated value, squittering is enabled,
Mode-S interrogations will be replied.
FL045 >0021
R ALT 0022
Altitude (FL)
Current replycode
Reply-/
Squitter-
Indicator
Standby-
Replycode
Current mode
