THOMSON Grass Valley KAM-HD-MULTI, Инструкция по эксплуатации

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20 KAM-HD-MULTI—Instruction Manual
Configuration and Adjustments
KAM-HD-MULTI audio capabilities are summarized in Table 2 below:
The KAM-HD-MULTI module can use a rear module with either balanced
or unbalanced AES audio connectors. Eight audio streams can be con-
nected in the following configurations set on the I/O Config web page:
• 8 inputs/0 outputs – when the module is set for 8 inputs and no out-
puts, all eight audio connectors on the rear module become inputs for
external AES audio.
• 4 inputs/4 outputs – when the module is set for 4 inputs and 4 outputs,
4 audio connectors become inputs for AES audio and 4 audio connec-
tors become AES audio outputs on the rear module. Refer to the I/O
Config web page for the specific rear module connector numbers.
• 0 inputs/8 outputs – when the module is set for 8 inputs and no out-
puts, all eight audio connectors on the rear module become inputs for
external AES audio.
AES C/U/V Bits Pass Through
The control bits that are part of each subframe of AES data are defined as
C (Channel status), U (User), and V (Valid) bits and the Z bit, which carries
the start position of the AES block frame. For the control and status bits in
the CUV positions of each audio channel, and the Z marker for each stream
(pair of channels), there is a buffer on the module that handles the asyn-
chronous timebase slips between the input and output AES stream fre-
quency.
This buffer will drop or repeat an entire block (occurring every 192 sam-
ples) of CUV bits when the two timebases cross a block boundary rather
than drop or repeat individual bits from the block.
Table 2. KAM-HD-MULTI Audio Capabilities Summary
Audio Source Audio Type
Asynchronous Audio
Allowed
CUVZ Passthrough
Permitted
SRC Bypass
Enabled
Auto Track
Enabled
AES Rear Connector Port
Audio Yes Yes
1
1
CUVZ Pass Through with asynchronous inputs will cause entire blocks of C, U, and V bits to be periodically skipped or repeated.
Synchronous only Yes or No
Non-Audio No Yes
1
Must be enabled Disabled
Demultiplexed Audio
Audio Yes Yes
1, 2
2
Only when the input video shares the same genlock reference as the module or when the module is in input-timed mode, are the Demultiplexed streams considered
to be synchronous.
Synchronous only
2
Automatically disabled
when SRC Bypass is
enabled.
Non-Audio No Yes
1,2
Must be enabled Disabled
Bypass to AES
Output Ports
Force-flagged as
Asynchronous
Mandatory N/A N/A