GRASS VALLEY NV8500 Series, Руководство пользователя

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Introduction
About the NV8500 Series Routers
An NV8500 router can be classified as a standard router or a hybrid router. A router is considered
a hybrid router if it has a hybrid control card. A hybrid control card is required if any I/O card is a
hybrid card. A router is considered a standard router if it has a standard control card. If it has
standard control card(s), it cannot have any hybrid I/O cards.
NV8500 series routers have multiple I/O slots and accept a number of different I/O card types
that support the different signal types listed on the previous page. I/O cards can also be classi-
fied as
standard or hybrid .
For standard I/O cards, the router passes embedded audio (audio embedded in video signals)
through the router, with the video, unaltered. In contrast, hybrid I/O cards allow the indepen-
dent routing of audio and video. This is accomplished by (1) de-embedding audio from a video
stream, (2) re-combining or re-embedding audio in video output, (3) extracting audio from
MADI streams, and (4) re-combining audio in outgoing MADI streams.
This flexible router architecture lets you realize these savings:
•
Less facility space and power is needed because one NV8500 series router can perform rout-
ing functions that previously required multiple frames.
• There is considerably less need to power and house separate video/audio de-embedders
and embedders.
•
Increased flexibility give you more control over the signals routed.
•
You can easily enlarge a switching matrix to meet future needs without investing in multiple
routers, subject to the maximum matrix size of the router.
I/O modules for all NV8500 series router can be “hot swapped.” Hybrid modules have green
labeling for easy differentiation from standard modules.
Signal Types and Rates
The NV8500 series supports the follows signal types:
Signal Type Standard Card Class Rates Supported
AES async (bal-
anced or unbal-
anced) AES3id Standard Sample rates 32 to 192 kHz (passed through)
Dolby E Dolby E Standard Passed through
Hybrid Phase aligned
MADI synchro-
nous streams
(unbalanced) AES10 Hybrid A stream of 56 or 64 time-multiplexed chan-
nels (customer configurable) at 48 kHz,
locked to reference
Video over Ether-
net SMPTE 2022-6 (no FEC) Hybrid Packetized video (uncompressed) carried
over 10GE Ethernet.
HD-SDI (SD or
HD) SMPTE 259M, 272M,
292M, 299M Standard Video rates from 19 Mb/s to 1.5 Gb/s.
Outputs: automatic re-clocking at 270 Mb/s
and 1.483 or 1.485 Gb/s. Automatic reclocker
bypass, with pass-through, for other rates.
Embedded audio passed through