Miranda NV8256-Plus, Руководство пользователя

Страница: 32 / 88

22 Rev 1.3 • 29 Mar 09
2. Introduction
Frame Expansion
Depending on which monitor card is installed, the following levels can be configured:
• SWB Monitor Card — SD and SWB.
• 3Gig Monitor Card — SD and SWB, or SD and 3Gig, or SWB and 3Gig.
When two NV8256-Plus routers are connected together, the two monitor outputs on one router are
connected to the two monitor inputs on the other router through monitor expansion connections.
This enables the monitoring of all outgoing signals from both routers through a single set of moni-
toring connections. For information on making monitor connections, see
Making Monitor Connec-
tions on page 43.
Frame Expansion
Two NV8256-Plus router frames can be connected together to create a switching matrix of up to
512 inputs and 512 outputs. The two frames are linked by connecting expansion connections on one
router to expansion connections on a second router.
The expansion connections are:
• I/O Signals — each frame has 8 signal expansion connections, each forwarding 64 signals
between two connected routers. All 8 connections must be connected. See Signal Expansion
Connections on page 34.
• Control System — one router is connected directly to the router control system. Using control
system expansion connections, control system connections are also made between the two rout-
ers. This enables the control system to see both routers through one control system connection.
See
Control System Expansion Connections on page 39.
• Monitor System — one router is connected directly to the monitoring equipment. Using monitor
expansion connections, monitor connections also made between the two routers. This enables
the monitoring equipment to see both routers through one monitor connection. See
Monitor
Expansion Connections on page 44.
Depending on your switching configuration, each frame may have one, two, or three crosspoint
cards, standard, filler or analog-to-SD input cards, and standard or SD-to-analog output cards. For
detailed information about switching configurations, see
Switching Configurations on page 4.
Figure 2-19 shows the flow of signals between two connected routers. The signals are forwarded to
the connected router through signal expansion connections.
Figure 2-19. Frame Expansion Diagram
I/O Expansion
Cable
Connections (8)
Router 1
Control
System
Monitoring
Equipment
Router 2