In most installations, this display will be sited in the master control suite to provide an immediate, and very space-effective, confidence check of the transmitted output. A second, master terminal VGA display is also provided which gives further detailed information and technical data on the status and performance of any selected service.

The system is also capable of multi-user access and one or more remote displays can also be established using IP connectivity to the monitoring point.

24/7 Real-time Confidence Monitoring
Purple Monitoring can be used to monitor all transmitted channels real-time, continuously for 24 hours a day, 7 days a week. Each VNOC card accepts two inputs and outputs two channels to the network. The Purple Monitoring System Controller processes the data against predefined alarm parameters and displays the video, audio and other service data in whichever display format the customer has preselected.

Multi-channel sampling
An alternative configuration enables an entire ASI transport stream to be monitored by just one VNOC card. Each card will sample, on a rotating basis, all the services within an ASI stream at a predetermined sampling rate and, at the same time, one service from the transport stream can be selected and monitored continuously. The video display clearly shows the services being actively monitored and the other services display their last known state and still frame.

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