Grass Valley NV8500 Series v.3.5 - Manual (Page 84)

68
Crosspoints
Overview of Crosspoints
Expanded NV8576-Plus
(See Chapter 6, Expanded NV8576-Plus on page 97, for details of the NV8576-Plus.)
In an NV8576-Plus, the router’s switching matrix is distributed across 8 crosspoint cards in each
of two frames. Crosspoint cards are installed in crosspoint slots 1–4 and 7–10 of each frame. The
optional redundant crosspoint is installed in slots 5 and 6 of each frame.
Each card switches a specific subset of the inputs or outputs. The frames exchange signals on
their expansion cabling.
Figure 3-3 shows the regions of the NV8576-Plus that correspond to the crosspoint cards:
Fig. 3-3: Expanded NV8576-Plus Frames (Front View)
Inputs 1–288 are received by crosspoint cards 1, 2, 7, and 8 in frame 1.
Inputs 289–576 are received by crosspoint cards 3, 4, 9, and 10 in frame 1.
Inputs 577–864 are received by crosspoint cards 1, 2, 7, and 8 in frame 2.
Inputs 865–1152 are received by crosspoint cards 3, 4, 9, and 10 in frame 2.
Outputs 1–288 are distributed by crosspoint cards 1 and 3 in frame 1, and 2 and 4 in frame 2.
Outputs 289–576 are distributed by crosspoint cards 7 and 9 in frame 1 and 8 and 10 in frame 2.
REDUNDANT CROSSPOINT
FAN
LOCAL OUTPUTS
1–144
INPUTS
1–144
(16 cards)
LOCAL OUTPUTS
289–432
(16 cards)
(16 cards)
INPUTS
289–432
(16 cards)
INPUTS
145–288
(16 cards)
INPUTS
433–576
(16 cards) (not used)
FAN
INPUT
MONIT
O
R
OUTPUT
MONIT
O
R
SEC. CONTROL PRIM. CONTROL
TO OUTPUTS 577–720
IN OTHER FRAME
TO OUTPUTS 865–1008
IN OTHER FRAME
FAN
LOCAL OUTPUTS
577–720
INPUTS
577–720
INPUT
MONIT
O
R
(16 cards)
LOCAL OUTPUTS
865–1008
(16 cards)
OUTPUT
MONIT
O
R
(16 cards)
INPUTS
865–1008
(16 cards)
INPUTS
721–864
(16 cards)
INPUTS
1009–1152
(16 cards) (not used)
FAN
SEC. CONTROL PRIM. CONTROL
REDUNDANT CROSSPOINT
TO OUTPUTS 1–144
IN OTHER FRAME
TO OUTPUTS 289–432
IN OTHER FRAME
INPUTS 1–
288
OUTPUTS 1–
288
INPUTS 1–
288
OUTPUTS 577
–
864
INPUTS 289–576 OUTPUTS 1–
288
INPUTS 289–576 OUTPUTS 577
–
864
INPUTS 1–
288
OUTPUTS 289–576 INPUTS 1–
288
OUTPUTS 865–1
152
INPUTS 289–576 OUTPUTS 289–576 INPUTS 289–576 OUTPUTS 865–1
152
INPUTS 577
–
864
OUTPUTS 577
–
864
INPUTS 577
–
864
OUTPUTS 1–
288
INPUTS 865–1
152
OUTPUTS 577
–
864
INPUTS 865–1
152
OUTPUTS 1–
288
INPUTS 577
–
864
OUTPUTS 865–1
152
INPUTS 577
–
864
OUTPUTS 289–576 INPUTS 865–1
152
OUTPUTS 865–1
152
INPUTS 865–1
152
OUTPUTS 289–576
LOCAL OUTPUTS
145–288
(16 cards)
LOCAL OUTPUTS
433–576
(16 cards)
TO OUTPUTS 721–864
IN OTHER FRAME
TO OUTPUTS 1009–1152
IN OTHER FRAME
LOCAL OUTPUTS
721–864
(16 cards)
LOCAL OUTPUTS
1009–1152
(16 cards)
TO OUTPUTS 145–288
IN OTHER FRAME
TO OUTPUTS 433–576
IN OTHER FRAME
INPUT
MONIT
O
R
OUTPUT
MONIT
O
R
INPUT
MONIT
O
R
OUTPUT
MONIT
O
R
1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10
Frame 1 Frame 2