Grass Valley NV8288 v.1.5 - Manual (Page 27)

NV8288 and NV8288-Plus Digital Video Routers • User’s Guide 17
2. Introduction
Active Cards
nals to the output cards (via the motherboard). Each crosspoint card can receive and distribute up to
288 signals.
The router can house up to two crosspoint cards. A second crosspoint card is only required to sup-
port outputs greater than 288. All installed crosspoint cards receive all incoming signals. (See
Input
Cards on page 16.)
Depending on the router being used, crosspoint cards send signals to output cards, as follows:
• NV8288 — The top crosspoint card feeds signals to the output cards located in the upper half of
the frame (outputs 1–288). The bottom crosspoint card feeds signals to the output cards located
in the lower half of the frame (outputs 289–576). See Figure 2-1 on page 5.
• NV8288-Plus — If two routers are connected, the top crosspoint card feeds signals to all output
cards on the local router (Outputs 1-288). The bottom crosspoint card feeds signals to the con-
nected router (Outputs 289-576). If the router is not connected to a second router, the router
only manages local Outputs 1-288. See Figure 2-2 on page 6.
Figure 2-16 shows the flow of signals through the crosspoint card:
Figure 2-16. Crosspoint Card Block Diagram
The crosspoint card includes a status reporting circuit. Five LEDs on the front of the crosspoint
card indicate the card’s status: alarm (Red), power good (Green), FPGA loaded (Amber), good
communication with the control card (Green) and bad communication with the control card (Red).
For more information, see
Indicator LEDs on page 58.
Output Cards
The router frame can house up to 48 output cards, each processing up to 12 SD or 12 SWB signals.
There are two types of output cards: standard and filler. The NV8288 uses the filler output card
only. The NV8288-Plus uses the standard output card only.
The filler output card manages signals distributed to the coaxial connections. The standard output
card manages signals distributed to the coaxial connections and to the expansion connections when
two NV8288-Plus routers are connected together.
The following is a list of the different output cards available. Each card is listed by the function it
performs (category)
— filler or standard — and the type of signal it manages — SD-SD or SWB. For
your convenience, the part number for each card has been included. For a detailed description of a
card’s function, see
Output Card Functions on page 18.
Motherboard Motherboard
Input Card
Crossbar
Switch
288 x 288
Crosspoint
Card
Output Card
Input Card Signal Type
Standard
(SMPTE)
Rates Part
Filler SD 259M
344M
143, 177, 270, 360, and 540 Mb/s EM0532
Filler SWB 259M
344M
292M
143, 177, 270, 360, and 540 Mb/s;
1.483 and 1.485 Gb/s
EM0533