Grass Valley MRC v.1.2 - Manual (Page 56)

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Configuring Routers
Router Levels Page
If you have not selected a stereo level, or if you have none defined, the table has 16 entries as
shown here:
If you have selected a defined stereo level, only the first 8 entries of the table are enabled:
Table entries 9–16 are disabled. Entries 1–8 provide pass-through audio support for 8 stereo
pairs. Channels 1 and 2 are paired, channels 3 and 4 are paired, and so on.
The pass-through ports you specify are specified according to the mono port numbering.
Any ports you have used for table entries 9–16 (for mono pass-through) are disabled for stereo
pass-through.
How to Specify a Basic Pass-Through Audio Source
1 Check the ‘Pass-Thru Audio Source’ check box. If this box is not checked, the pass-through
audio source field is greyed out.
2 Enter one of the audio input ports of the hybrid router in the pass-through audio source
field. The field actually accepts values in the range [0–65,535] but only valid audio port num-
bers will work properly. We recommend that you specify one of the unused audio ports of
the router’s disembedder cards (or MADI cards). Otherwise, if you specify a normal port, that
port cannot be used for any real input.
 Always choose an unused audio port number that is greater than the number of video
input ports of the router. Unused port number between 1152 and 2304 will work well for
any NV8500 router.
Uncheck the ‘Pass-Thru Audio Source’ check box if you do not want to use basic pass-
through audio.
3 Perform other changes in the ‘Router Level’ page as required and click the ‘Update Control
Card’ button at the bottom of the page.