Grass Valley NV8256-Plus v.1.2 - Manual (Page 19)

NV8256-Plus Digital Video Router • User’s Guide 9
2. Introduction
Module Slots and Rear Connections
Slots and Corresponding Signal Numbers
If the NV8256-Plus router is used as a standalone router, up to 256 incoming signals can be
received and up to 256 outgoing signals distributed. The crosspoint card installed in the left cross-
point card slot manages inputs 1–256. If two NV8256-Plus routers are connected together, signals
coming into one router can be sent to a second, connected router. This can double the number of
signals managed by the two routers to a maximum of 512 inputs and 512 outputs. The crosspoint
card installed in the right crosspoint card slot manages inputs from the second router: 257–512.
A crosspoint card installed in the middle slot acts as a redundant crosspoint card for fail-over. For
more information on crosspoint cards, see
Crosspoint Card Slots and Managed Signals on page 5.
For information on installing cards in modules slots, see Installing Active Cards on page 32.
Figure 2-3. Inputs and Outputs, Numbers Assigned (Front View)
Each input card slot and output card
slot, and the card it holds, receives or
distributes signals through 16 BNC
connectors. Each signal is assigned a
number that corresponds to the physi-
cal input or output connection. The
numbers correspond to the slot in
which an input card or output card is
installed. This means that input slot 1
corresponds to inputs 1–16, input slot
2 corresponds to inputs 17–32, and so
on, up to 256, as shown in Figure 2-3.
Output slots are similarly numbered,
such that output slot 1 corresponds to
outputs 1–16, output slot 2 corre-
sponds to outputs 17–32, and so on,
up to 256, as shown in Figure 2-3.
Similarly, the location of an input card
or output card in the router frame
determines the inputs and outputs
managed by that card. For example,
an input card located in slot 1 man-
ages inputs 1–16. An input card
located in input slot 2 manages inputs
17–32, and so on.
Control Card—Primary
OUTPUTS 129-144 OUTPUTS 145-160 OUTPUTS 161-176 OUTPUTS 177-192 OUTPUTS 193-208 OUTPUTS 209-224 OUTPUTS 225-240 OUTPUTS 241-256
INPUTS 129–144 INPUTS 145–160 INPUTS 161–176 INPUTS 177–192 INPUTS 193–208 INPUTS 209–224 INPUTS 225–240 INPUTS 241–256
OUTPUTS 1–16 OUTPUTS 17–32 OUTPUTS 33–48 OUTPUTS 49–64 OUTPUTS 65–80 OUTPUTS 81–96 OUTPUTS 97–1
12
OUTPUTS 1
13–128
INPUTS 1–16 INPUTS 17–32 INPUTS 33–48 INPUTS 49–64 INPUTS 65–80 INPUTS 81–96 INPUTS 97–1
12
INPUTS 1
13–128
MONIT
OR
FAN
CROSSPOINT
INPUTS 1-256
CROSSPOINT
(REDUNDANT)
CROSSPOINT
INPUTS 257-512
Control Card—Secondary