Triple-Play Service Deployment

Chapter 6: Troubleshooting Video in the Headend
This comparative analysis is a very effective way to segment the broadcast chain
and isolate problem sources to a specific piece of equipment or stage of the
network. It requires the MPEG analyzer to have a broad range of interfaces to
provide the test access across the broadcast chain. Additionally, if the analyzer
supports simultaneous analysis, this task becomes even more efficient, as the
technician can literally compare the same video programs at two separate points
in the chain at the same time. For example, in Figure 6.10, if the MPEG analyzer
supports simultaneous analysis, the headend technician may look simultaneously
at the same program on the ASI monitor port from a satellite receiver and at the
GigE output of a video IP switch.
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