The Aircraft Digital Audio Control System consists of Audio
Control Panels (ACP51 or ACP53), Audio Management Unit (AMU50) and
Remote Memory (RM01).
The ACP51 and ACP53 are Dzus-mounted units that allow the
operator to adjust volume, select a transceiver, and select the
patient mode. It's a 'terminal' that monitors user switch
selections and level adjustments, passing them along to the Audio
The AMU50 is able to support eight receivers, eight
transceivers, two CVRs, six direct inputs, six ACPs and seven
headsets. It integrates a warning generator providing eight
tone/voice alarms with multiple levels of priority. The RM01
remotely stores the system's configuration and the aural warning
file allowing replacement of the AMU50 without having to
reconfigure the replacement unit. It has been especially designed
for helicopters and light aircraft.
Cobham's Digital Audio Control System is standard fit in more
civil production helicopters than any other system in the
world. The EC175, EC135, EC635, EC725, EC225, EC155, AW109,
AW119, AW149, AW169, and AW189 all rely on DACS.