EN
DRAFT COPY
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Flight Timer
The Flight Timer records the time for which the transponder has been powered on and
operating in flight mode
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either ON or ALT. Press the FUNC button to display the
Flight Timer.
Timer
The stopwatch can be used as a convenient timer. Press the FUNC button to display
the stopwatch. Pressing ENT will reset and start the timer. Pressing ENT again will
stop the timer.
ADS-B Position Monitor
The ADS-B Monitor is only available on installations that include an ADS-B position
source. The ADS-B Monitor provides a display of the position information that is being
transmitted in ADS-B position reports. This can provide confirmation that the correct
information is being transmitted, particularly where the GPS source is remote from the
transponder.
In the event that valid position information is NOT available from the GPS, the latitude
and longitude display will be replaced by dashes; if no valid latitude and longitude is
shown then ADS-B position information is NOT being transmitted.
Loss of ADS-B position information will also result in a WARNING message being
displayed.
Altitude Monitor
The Altitude Monitor activates an audio annunciator or annunciator light (depending
on installation) when the aircraft pressure altitude differs from the selected altitude by
more than 250 feet. Press the FUNC button to display the altitude monitor enable
screen. Pressing ENT toggles the altitude monitor at the current altitude.
When altitude monitoring is in use, a small deviation pointer appears adjacent to the
altitude display on the transponder.
Warning Messages
If the transponder detects a problem, the screen will indicate WARNING and a brief
statement of the problem. Depending on the nature of the problem, your transponder
may not be replying to interrogations. Note the message on the screen and pass that
information to your avionics maintenance organisation. Press ENT to clear the
message; if the fault is still present the message will reappear.
Fault Annunciation
If the transponder detects an internal failure, the screen will indicate FAULT and a
brief statement of the problem. No replies will be made to interrogations when a fault
is detected.
