Grass Valley NV8500 Series v.3.5 - Manual (Page 48)

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Inputs and Outputs
Types of Input and Output
connectors — the 9th and the 18th — are unused. Nevertheless, the unused connectors are
counted in the port numbering sequence as if they were additional video inputs with 16
embedded audio channels.
The router’s port numbering scheme associates 16 audio port numbers with each video port.
Video port 1 carries audio ports 1–16, video port 2 carries audio ports 17–32, and so on.
This numbering applies to a disembedder card in any slot. A disembedder card in slot 1 provides
video ports 1–16 and audio channels 1–128 and 145–272. The 9th and 18th connectors are
unused and the corresponding ports (video ports 9 and 18 and audio ports 129–144 and 273–
288) do not exist. Thus, a disembedder card in slot 2 supports video ports 19–26 and 28–35 and
audio channels 289–416 and 433 –560. Its 9th and 18th connectors are also not used. A disem-
bedder card in slot 3 supports video ports 37–44 and 46–53 and audio channels 577–704 and
721–833, and so on.
Consecutive disembedder cards increment by 18 video ports and 288 audio channels. Consecu-
tive cards follow the slot ordering for port numbers. See
Slot Order for Port Numbering on
page 37.
For Other Routers
For all NV8500 routers except the NV8140, the hybrid disembedder card can disembed 16 audio
channels from each of its 8 video inputs. Each disembedder card thus has 128 audio inputs.
However, input backplanes used for disembedder cards have 9 connectors. Eight of the connec-
tors are used for the video and the 9th connector is unused. Nevertheless, the 9th connector is
counted in the port numbering sequence as if it were another video input with 16 embedded
audio channels.
(Frame sync input cards (and backplanes) can be considered disembedder cards that have an
additional RJ-45 port for configuring frame sync functions.)
The router’s port numbering scheme associates 16 audio port numbers with each video port.
Video port 1 carries audio ports 1–16, video port 2 carries audio ports 17–32, and so on.
This numbering applies to a disembedder card in any slot. A disembedder card in slot 1 provides
video ports 1–8 and audio channels 1–128. The 9th connector is unused and the corresponding
ports (video port 9 and audio ports 129–144) do not exist. Thus, a disembedder card in slot 2
supports video ports 10–17 and audio channels 145 through 272. Its 9th connector is not used.
A disembedder card in slot 3 supports video ports 19–26 and audio channels 289–416, and so
on.
Consecutive disembedder cards increment by 18 video ports and 288 audio channels. Consecu-
tive cards follow the slot ordering for port numbers. See
Slot Order for Port Numbering on
page 37.
Embedder Output
The hybrid embedder card and the hybrid disembedder/embedder card can each embed 16
audio signals into each of 16 video streams. Each card thus has 256 audio outputs. However,
output backplanes used for embedder and disembedder/embedder cards have 18 connectors.
Sixteen of the connectors are used for the video and the two connectors
— the 9th and the 18th
— are unused. Nevertheless, the unused connectors are counted in the port numbering
sequence as if they were additional video outputs with 16 embedded audio channels.