Becker Avionics GmbH AR6203 Manual Do Utilizador
Operating Instructions
Device Description
0638.420-071 Issue 03 July 2015
VHF Transceiver Family 620X
9
2.1.3.
Safety-Conscious
Utilization
Switch OFF the device before starting or shutting
down engines.
A voice communication test shall be performed
before starting the engine.
It should be noted that, if the communication test is
carried out close to a ground station, the results may
be positive even if the antenna cable is broken or
short-circuited. In such a case, at a distance of 5 to
10 km and above, communication might not be
possible.
•
Speak always loud, clear and not too fast for optimal voice
communication.
•
Keep the microphone always close to the lips otherwise a
special suppressing circuit in the VHF COM will not be capable
to suppress normal cabin noise.
•
Use only microphones or headsets which are suitable for use
in an aircraft.
o In aircraft made of wood, synthetic materials or in gliders or
helicopters, incoming radiation can affect the integrated
amplifier of the microphone (feedback), noticeable in the
ground station by whistling and/or heavy distortion.
If the power supply voltage drops below the "Low Battery Threshold"
(default value is 10.5 V), the "LOW BATTERY" message will appear each
3 seconds in the lower part of the display.
If the power supply voltage drops below 10 V the
system enters power saving mode:
•
Speaker output of the transceiver is automatically
switched "OFF"
•
Speaker sign will no longer be presented on LCD
display
•
The pilot must use headphones to continue
listening.