Grass Valley NV8500 Series v.3.5 - Manual (Page 44)

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Inputs and Outputs
Types of Input and Output
I/O Space
Whether a router has standard cards or hybrid cards, each router has an I/O port “space” as listed
in this table:
However, hybrid routers do not have circuitry for all the port numbers in their port space.
Each video port and each AES async port is an element of the router’s crosspoint matrix.
Hybrid audio ports are elements of a hybrid router’s TDM audio switching “matrix.”
Each I/O card also has an I/O port space within the port space of the router:
The port numbers assigned to cards in successive slots increment by the numbers in this table.
However, hybrid cards do not have circuitry for all the port numbers in their port space.
Embedder and Disembedder Cards
For all NV8500 routers except the NV8140, a (hybrid) disembedder card has only 8 video ports.
Each of the 8 carries 16 embedded audio channels (or audio ports) for a total of 128 audio ports.
The 9th video port and the 16 audio ports it would have do not exist. Therefore, the 9th
connector on the disembedder card’s backplane goes unused.
That is true for the frame sync input cards and backplanes, which are essentially disembedder
cards whose backplanes have an additional RJ-45 port.
For the NV8140, a (hybrid) disembedder card has 16 video ports. Each of the 16 carries 16
embedded audio channels (or audio ports) for a total of 256 audio ports. The 9th and 18th video
ports and the 16 audio ports each of those ports would have do not exist. The 9th and 18th
connector on the card’s backplane go unused.
Router Inputs
a
a. Either video or AES async.
Outputs
a
Audio Inputs
b
b. For hybrid routers.
Audio Outputs
NV8144 144 144 2304 2304
NV8140 c
c. The NV8140 does not support AES async.
144 288 2304 4608
NV8280 288 576 4608 9216
NV8576 576 1152 9216 18432
NV8576-Plus
(stand-alone) 576 576 9216 9216
NV8576-Plus
(expanded)
d
d. The expanded NV8576-Plus has two frames.
1152 1152 18432 18432
Card Video Ports
a
a. Either video or AES async.
Audio Ports
b
b. For hybrid cards.
Input 9 144
NV8140 input 18 288
Output 18 288
Expansion output 9 144