Sync Control System 21
Inside the audio control unit is a single circuit board: the CMS Audio PCB.
The CMS Audio PCB adapts the intercom audio(s) which is then delivered to the consoles through the
global audio cable.
A communication cable connected to the Sync computer allows telephone style functionality for the
intercom.
The board is powered by an external power supply. Refer to the gure titled Audio Control Unit -
Internal View.
Audio Control Unit - Internal View
(1) CMS AUDIO PCB (2) VOLUME CONTROL
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