Grass Valley MRC v.1.2 - Manual (Page 80)

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Configuring Routers
Miscellaneous Page
Two NV8576-Plus frames can be connected to form an “expanded NV8576-Plus” router. A single
NV8576-Plus frame can also operate as a stand-alone router.
When two router frames are connected, one frame is designated as the main frame and one
frame as the expansion frame. The main frame is the one that is connected to the router control
system. The expansion frame does not communicate with the router control system, but
receives commands from main frame.
Any changes made to the main frame’s crosspoints are automatically sent to the expansion
frame ensuring synchronization between the connected frames. Expansion frame configura-
tions should not be updated independently of the main frame.
Each control card on each of the router frames must be configured separately and identically.
For routers with two frames, be sure to set all control cards on one frame as main and all control
cards on the remaining frame as expansion.
How to Set a Frame as Main or Expansion
1 Go to the ‘Miscellaneous Settings’ page. From the Control Cards table at the bottom of the
page, select a control card (for a router that has two frames).
2 In the ‘Expansion Settings’ section, click a radio button for the frame you are configuring:
• Expanded - Main — Designates the frame, for the control card you are modifying, as the
main frame.
• Expanded - Expansion — Designates the frame, for the control card you are modifying,
as the expansion frame.
3 The following settings are optional and do not apply to NV8500 routers:
a In the ‘Local Physical’ section, enter a start and end number for the router’s inputs and
outputs in this frame. This is an example for the NV8256-Plus:
b In the Control Card Bus section, if you router requires it, select the 10BASE2 radio button.
The frames of older two-frame routers, such as the NV8256-Plus, communicate through
their 10base2 connections. Choosing 10BASE2 is appropriate for these routers.
In the ‘Index’ field, enter a number that serves as a frame “ID.” Each frame of a multi-
frame router must have a unique ID.