Sonifex CM-CU1, Руководство пользователя

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7
CM-CU1 Rear Panel Controls & Connections 1
Test Tone Switch
The CM-CU1 has a built in test tone generator which selectively routes
a line-up tone to all outputs to assist channel identification and cabling
checks. There are two test tone modes; manual and auto. Regardless of
mode, a 1kHz tone is permanently routed to the Mix Output and the PPM
meter will indicate that the signal level is 0dBu. The test tone is enabled
by sliding the TEST TONE switch to the upper “ON” position. To change the
test tone mode; keep the Talkback B and Talkback C buttons pressed for 2.5
seconds.
Test Tone Manual Mode
With the test tone in manual mode, the ON AIR and TALKBACK buttons flash
amber. The test tone can be routed to the Comm and Talkback Outputs
by pressing the ON AIR or corresponding TALKBACK buttons. The ON AIR
button illuminates red when pressed and the TALKBACK buttons illuminate
green. When the button is released, the tone on that output is muted.
Test Tone Auto Mode
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 pulse
Talkback A 2 pulses
Talkback B 3 pulses
Talkback C 4 pulses
Talkback D 5 pulses
The 5 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 return to the state they were in prior to entering test
tone mode.
Return Audio Inputs
The five transformer balanced return audio inputs, Prog, A, B, C and D 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 electronically balanced commentator output, and the transformer
balanced talkback A, B, C and D 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)
When powering the CM-CU1 via the DC supply input, it is important to
ensure that the unit is suitably earthed. An earth connection point is
provided on the rear panel in the form of a M4 stud and screw and this
should be connected directly to a technical earth.