Sonifex CM-CU21, User Handbook Manual

Page: 18 / 32

8
CM-CU21 Commentator Unit User Handbook
CM-CU21 COMMENTATOR UNIT
4
REAR P
ANEL C
ONTR
OLS & C
ONNEC
TIONS
On Air or Talkback buttons. The On Air buttons will illuminate red when pressed and the
Talkback buttons will illuminate green. When the button is released, the tone on that
output will be muted.
With the test tone in auto mode, each of the Comm and Talkback outputs are automatically
identified by a unique number of short tone bursts, lasting 0.25 seconds each, which
are repeated every 3 seconds. Each button flashes when tone is being routed to the
corresponding output. The number of pulses on each output is shown below:
Comm 1 1 pulse
Comm 2 2 pulses
Comm 3 3 pulses
Talkback A 4 pulses
Talkback B 5 pulses
The 4 return audio inputs function normally when the test tone is enabled. This could
be useful in allowing the user to receive instructions on which channel to output tone
to when using the test tone in manual mode. When the test tone is disabled, normal
operating mode is resumed and the On Air and Talkback buttons will be returned to the
state they were in prior to entering test tone mode.
Return Audio Inputs
The four transformer balanced return audio inputs, Prog, A, B and C are via 3 pin female
XLR-3 connectors with the following connections:
Pin 1: Ground
Pin 2: Phase
Pin 3: Non-phase
Audio Outputs
The three electronically balanced commentator outputs Comm1-3, and the transformer
balanced talkback A and B and mix outputs are all via 3 pin male XLR-3 connectors with the
following connections:
Pin 1: Ground
Pin 2: Phase
Pin 3: Non-phase
DC Supply Input
The commentator unit can be powered from an external, regulated 12V or 24V DC power
source. The DC input is via a 4 pin male XLR-4 connector with the following connections:
Pin 1: 0V
Pin 2: No connection
Pin 3: No connection
Pin 4: +VE (12-24 Volt DC)