Grass Valley NVISION Compact CQX - Manual (Page 61)

Compact Router System Configurator • User’s Guide 49
8. Viewing Router Crosspoints
Using the ‘View Router Crosspoints’ page, you can view router crosspoints and perform ‘takes’
(i.e., manipulate router crosspoints). The page provides a visual representation of the router
matrix—the inputs and outputs
— enabling you to manage the crosspoints through an easy-to-use
interface.
A router matrix is organized into levels. Levels are partitions in the matrix. A signal can only be
switched from inputs to outputs within the same level. (See
Configuring Router Levels on page 25.)
Depending on the router, there may be only one level encompassing the entire router, as with CQX
routers, or several levels, each representing a portion of the matrix.
The grid that displays on the ‘View Router Crosspoints’ page represents a router’s entire crosspoint
matrix. Inputs are columns; outputs are rows. There are as many rows and columns as supported by
the router. For example, a 16×4 router will have 16 columns and 4 rows. The grid for AES routers,
however, shows twice as many rows and columns because there are two channels for a single input
or output. (See
About AES Crosspoints on page 49.)
Panel operators can perform ‘takes’ and locks at any time, changing the router crosspoints. Any
crosspoint change made by a panel operator is reflected immediately in the ‘View Router Cross-
points’ page.
‘Takes’ can be performed using the page by clicking a cell where an input (column cell) intersects
an output (row cell). For example, to take input 7 to output 11, click the cell at column 7 and row
11. The cell turns black indicating that it is a crosspoint connection. To undo the last take click
Undo Last Take .
To open the ‘View Router Crosspoints’ page, from the navigation pane, click ‘View Router Cross-
points’ under the ‘Tools’ bar. The ‘View Router Crosspoints’ page appears.
At any time, click
Refresh Summary
to refresh the list of crosspoints.
Discussion
About AES Crosspoints
AES routers have paired signals for each input and output. Usually the signals are stereo pairs, but
this is not a requirement. Because of this pairing, the crosspoint view for AES routers has 2 rows
for every output and 2 columns for every input. As an example, a 32×4 AES crosspoint matrix has
64 inputs and 8 outputs. Therefore the crosspoint view for that router has 64 columns and 8 rows.
For AES routers to operate in synchronous mode, there must be a video reference signal present. If
no video reference signal is present, the router operates in asynchronous mode. Compact routers
cannot resolve mono signals without a video reference. When the router is in synchronous mode,
the router’s level type is ‘Synchronous AES Mono’. When the router is in asynchronous mode, the
router’s level type is undefined, but it appears as though it were ‘Synchronous AES Mono’. In other