Grass Valley NV8500 Series v.3.5 - Manual (Page 105)

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Monitoring
Monitor cards allow an operator to assess the presence and quality of signals within the router.
Topics
Overview of Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Installing Monitor Backplanes and Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Making Monitor Signal Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
Overview of Monitoring
The monitor card for the NV8280, NV8576, and NV8576-Plus sample two signals. The same
monitor card is used for inputs and outputs. In an output monitor slot, the monitor card samples
two outputs. In an input monitor slot, the monitor card samples two inputs. These are the
monitor backplanes for the NV8280, NV8576, and NV8576-Plus:
Fig. 5-1: Monitor Backplanes for NV8280, NV8576, and NV8576-Plus
The monitor card for the NV8144 is different from the monitor cards used for the NV8280,
NV8576, and NV8576-Plus. The monitor card for the NV8144 samples one input signal and one
output signal. This the NV8144’s monitor backplane:
Fig. 5-2: Monitor Backplane for the NV8144
The NV8140 has no monitor card slot and does not support monitoring.
A router can send one signal from any input (or output) card to the monitor card. Under control
of the router control system, the monitor card selects which of many cards to sample.
Each monitor card produces two signals that can be sent to monitoring equipment. You can use
MRC (or UniConfig) to select the inputs and outputs to monitor.
Monitor cards can sample either video with or without embedded audio or AES async signals.
1
For a list of monitor cards available and part numbers, see Monitor Cards on page 219.
1. It is not possible to select a MADI signal for monitoring, although MADI channels can be embedded in a
a video signal which can be monitored.