Grass Valley NV9000-SE v.5.0 User Manual
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NV9000-SE Utilities
User’s Guide
4 Let V represent the number of virtual crosspoints. Then
(a) The physical level will have V virtual inputs and V virtual outputs.
(b) If your physical level has M real inputs, the total number of inputs that your configuration
can use is M + V.
(c) If your physical level has N real outputs, the total number of outputs that your configura-
tion can use is N + V.
Example: If your physical level has inputs 1–288 inputs, and outputs 1–576, with 64 vir-
tual crosspoints, the size of the available matrix becomes (288+64, 576+64) or (352, 640).
(d) Any virtual output v is coupled to virtual input v, where 1
< v < V.
Using the same example: virtual input 6 is coupled to virtual output 6. In the 352×640
matrix, that virtual input port is 288 + 6 = 294 and the associated virtual output port is
576 + 6 = 582.
NV9000-SE Utilities does not let you specify a port beyond the conbined range of real ports
and virtual ports.
Operators can select sources and destinations that use ports in the combined range of real
ports and virtual ports. Operators normally cannot distinguish virtual ports from real ports.
5 NV9000-SE Utilities requires that you define a “default input” for virtual crosspoints.
(See
The term “default input” is a misnomer. It is not a default for anything. It really should be
called an “initial” or “temporary” input.
In NV9000-SE Utilities, no output can be without an input and this includes virtual outputs.
Therefore, assign any of the real inputs as the initial input. When a system controller starts,
that input is taken to all the virtual outputs you have defined.
When an operator performs routes using virtual crosspoints, those routes override the initial
(and temporary) input.
6 The use of virtual crosspoints pre-supposes some setup salvos that put the NV9000 system
in a pre-defined state against which panel operators can perform takes to virtual outputs.
There can be many such pre-defined states.
See
on page 387 for additional information.