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7.0
AUDIO INPUTS AND OUTPUTS
C2-7000 series units with AES3 digital audio have extra connections at the
rear to bring the audio in and feed the mixed & routed channels back out
again.
7.1
Connection summary
The connectors on the rear provide the following connections:
Connector:
AES3-id I/O 1
AES3-id I/O 2
Inputs:
AES1 to AES8, DARS1
AES9 to AES16, DARS2
Outputs:
CH1 to CH8 for output 1 CH1 to CH8 for output 2
Note that all 16 AES3-id inputs (AES1 to AES16) are freely available for use
within the unit for routing and mixing, but that the outputs are designed to
match the video outputs. Therefore, since the unit has 2 outputs, the audio
outputs have 2 connectors (as shown above) – in which the AES3-id audio
signals are referred to as ‘CH1 to CH8’.
Note that where an SDI output is present, these digital audio outputs are also
embedded into this signal. The AES3 audio outputs and the embedded SDI
audio channels always follow each other. This is also why there are 8 stereo
channels on each output connector – since SDI has this many audio signals
that can be embedded within it.
Please also note that the unit processes 8 stereo audio signals for each video
input and output. Therefore you will find that each video signal (e.g. CV1) can
have 8 audio signals assigned to it. If you’re outputting SDI, then all 8 routed
signals will be embedded and all 8 sources for the video being routed may
therefore need to be setup – otherwise you may just want to define 1 audio
source and only use 1 AES3-id output.
7.2
DARS locking
A DARS AES3-id input is available on both I/O connectors – this is to allow
locking to a studio reference source. This is enabled using the ‘Lock’ menu
item in ‘Adjust outputs’, by setting it to ‘DARSlock’.
The DARS input must be a 48kHz AES3-id signal, as the 48kHz AES3-id
audio outputs will be synchronized to this source. The unit’s internal pixel
clock generator will also be synchronized to this source, so it is vital that the
DARS input is a stable signal.
Note that in Independent mode, DARS1 and DARS2 are completely
independent of each other – the first synchronizes the outputs on AES3-id I/O
1 and the second synchronizes the outputs on AES3-id I/O 2.
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