EN
several minutes. You should always switch on the transponder
(usually to GND mode) before taxiing to the runway, to ensure that the
sensor is operating before you become airborne.
General Low Temperature Operation
The transponder is certified to operate correctly down to -25C, but at
low temperatures the display may be impaired. On a cold day you
may need to wait for the cockpit to warm up to ensure normal
operation.
ADS-B 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.
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 a catastrophic internal failure, the screen
will indicate FAULT and a brief statement of the problem. No replies
will be made to interrogations when a fault has been detected.
Some FAULT indications can be recovered by switching the
transponder off and back on again, although in all cases a FAULT
code implies that there is a fault with the transponder or the
installation. Note the FAULT message at the bottom of the screen
and pass that information to your avionics maintenance organisation.
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