Rev.7a (for units from ser.no. 51053/built 2010) 26.01.2010 This document substitutes previous versions page 24 of 34
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AIRCOM Manual
functional description
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Via AUX OUT A and AUX OUT B commentator signals are fed into the intercom-system. Since
configuration switch 4-4 (AUX OUT PRE) is set, independent of ON AIR or TALK button states.
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Inside the intercom-system commentator signals are handled depending on control signal states of
COM 1 A and COM 1 B. As a result the commentator signals are integrated into the intercom-
system.
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As the commentator signals are always available (AUX OUT PRE is ON), they can be used for
proprietary functions of the intercom-system (additional intercom channels).
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When a TALK button on the operating interface of the intercom-system is actuated, a control signal
should drive the respective OFF AIR control input at the AIRCOM (This implements the same
behaviour, as if a TALK button on the AIRCOM front panel is depressed.).
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Intercom return signals are fed via AUX IN A and AUX IN B into the AIRCOM monitoring section
(Refer to settings of 4-10 and 4-11.).
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Since the AIRCOM „normal“ program input is not available in this configuration, program signal is
connected to COM3 input. Signalisation at COM3 is disabled by setting of configuration switch 4-8
(COM3 Signalisation Off).
… alternatively ...
In case the intercom-system return signals do not just deliver intercom, but also include program
monitor signals, COM3 input assignment is redundant. But consider the fact, that the level ratio in
between intercom and program signals must then be well-balanced inside the intercom system,
because it cannot be controlled by the commentator.
