67
NV8500 Series
User’s Guide
Normally, the redundant crosspoint module is in stand-by mode; it does nothing unless one of
the normal crosspoints fails.
If fail-over is automatic and a normal crosspoint card fails, the NV8280’s control card causes the
redundant card to take over for the failed card. When the redundant card becomes active, it
sends its outputs to the output cards normally supported by the failed crosspoint card.
NV8576
In an NV8576, the router’s switching matrix is distributed across 8 crosspoint cards. Each card
switches a specific subset of the inputs or outputs. Crosspoint cards are installed in crosspoint
slots 1–4 and 7–10. The optional redundant crosspoint module is installed in slots 5 and 6:
Fig. 3-2: NV8576 (Front View)
Normally, the redundant crosspoint module is in stand-by mode; it does nothing unless one of
the normal crosspoints fails.
If fail-over is automatic and a normal crosspoint card fails, the NV8576’s control card causes the
redundant card to take over for the failed card. When the redundant card becomes active, it
sends its outputs to the output cards normally supported by the failed crosspoint card.
INPUTS 289
576
INPUTS 1
288
FAN
OUTPUTS
1144
INPUTS
1144
INPUTS 1
288
INPUT MONITOR
OUTPUTS
289432
(8 cards)
OUTPUTS
577720
(8 cards)
OUTPUTS
8651008
(8 cards)
OUTPUT MONITOR
(16 cards)
INPUTS
289432
(16 cards)
OUTPUTS 1576
OUTPUTS
145288
(8 cards)
INPUTS
145288
(16 cards)
INPUTS
433576
(16 cards)
(not used)
FAN
OUTPUTS
433576
(8 cards)
OUTPUTS
721864
(8 cards)
OUTPUTS
10091152
(8 cards)
SEC. CONTROL
PRIM. CONTROL
INPUTS 289
576
INPUTS 1
288
INPUTS 1
288
INPUTS 289
576
INPUTS 289
576
REDUNDANT CROSSPOINT
(8 cards)
OUTPUTS 5771152
1
2
3
4
7
8
9
10
5, 6
CROSSPOINT
SLOTS
INPUT
MONITOR
OUTPUT
MONITOR
Inputs 1–288 are received by cros-
spoint cards 1, 2, 7, and 8.
Inputs 289–576 are received by
crosspoint cards 3, 4, 9, and 10.
Outputs 1–576 are distributed by
crosspoint cards 1–4.
Outputs 577–1152 are distributed
by crosspoint cards 7–10.
Содержание NV8500 Series
Страница 1: ...NV8500 Series Hybrid Digital Video Audio Routers User s Guide UG0034 09 30 Oct 2014 ...
Страница 8: ...viii ...
Страница 16: ...xvi Table of Contents ...
Страница 124: ...108 Expanded NV8576 Plus Connecting the NV8576 Plus Frames ...
Страница 134: ...118 Alarms Making Alarm Connections ...
Страница 150: ...134 Power Connecting to Power ...
Страница 161: ...145 NV8500 Series User s Guide Network Page Time Page ...
Страница 204: ...188 M3 Cards M3 Cable and Connectors ...
Страница 216: ...200 Maintenance Obtaining Service ...
Страница 228: ...212 IP Gateway Specifications ...
Страница 236: ...220 Frame Expansion ...
Страница 246: ......