Becker 0622.834-923, Installation And Operation Manual

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Operating Instructions
Auxiliary Audio Input
36 GK61X-XX DV16800.03 Issue 03 08/2015
3.8. Auxiliary Audio Input
The transceiver has a dedicated auxiliary audio input e.g. for MP3 player connection.
With auxiliary input enabled in installation setup, the auxiliary audio input signal mixing with the
received signal from antenna (passing squelch) and the intercom signal (when activated).
When intercom operates in ISOLATION mode, auxiliary audio input signal is audible on headphone
2 output, even if radio communication (transmission/receiving) is active.
AUX AUTO MUTE function depends on the AUX INPUT, selectable via the CONFIGURATION page in
the installation setup. This function automatically mutes the audio signal from the auxiliary audio input
as long as the AR620X detects (based on squelch evaluation) a RX signal or the user deactivates the
squelch manually. If this function is disabled the signal from the auxiliary audio input is permanently
audible on the audio output, independently of the received signal or the squelch status.
Automatic aux attenuation functionality controls the auxiliary audio input. The level of the auxiliary
input signal attenuates if intercom is activated by VOX or by /IC discrete input. The auxiliary input
signal reverts to its previous value after intercom deactivation. The attenuation value can be adjusted
within the range from 0...40 dB.
3.9. Intercom Operation
Intercom operation may be triggered automatically via VOX (with adjustable threshold) or externally
via intercom switch.
The setting of VOX-threshold and intercom volume is accessible in the pilot intercom menu, in tandem
configuration on primary controller only.
For a single block, the primary controller is the one directly connected to VHF transmitter. For a
remote VHF transmitter the primary controller is the one connected to primary control interface.
VOX-threshold and intercom volume for the second intercom circuit are controllable from secondary
controller RCU6201 (secondary controller is the one connected to secondary control interface).
The transceiver has two internal built in intercom circuits. Therefore, up to four headsets are
connectable. Pilot and co-pilot connect to the first intercom circuit. When intercom is active, both
microphone signals are mixed and amplified with each other and will be audible on both headphone
outputs. This enables internal communication via headsets between both pilots. Passenger headsets
are connecting to the second intercom circuit.
ALL mode - Everyone connected to the intercom will hear all communications (pilots hear passengers
and passengers hear pilots).
ISOL mode - Provides separate intercoms for the pilots (intercom circuit one) and the passengers
(intercom circuit two). This allows pilots to communicate with each other, and air traffic, while the
passengers are isolated. The passengers on the intercom circuit two can hear auxiliary audio (for
example from mp3 player) and can communicate with each other.
External "ISOL" input provides possibility to switch between ALL mode and ISOL mode. If the /PTT1
input is active and ISOL is active the passenger intercom operation on second intercom circuit is still
possible.
While transmit mode intercom operation is degraded. During receive mode the intercom operation
activates automatically via VOX (with adjustable threshold), or using the external intercom switch.
If intercom operation is active, the "IC" sign appears in the display.
118.005
127.000
IC
SQL
Intercom Operation via VOX
Via VOX, the intercom operation is automatically activated (threshold adjustable in the intercom
menu). With additional RCU6201, VOX threshold for the first intercom circuit is adjustable from
primary controller (AR620X or RCU6201) and for the second intercom circuit from second controller
RCU6201.
Intercom activation via VOX is not possible if: