Triple-Play Service Deployment

Chapter 6: Troubleshooting Video in the Headend
Figure 6.5: TR 101-290 provides a simple, yet comprehensive assessment of the MPEG-2 transport
stream’s instantaneous health. In this analyzer screenshot, each category has an LED to
indicate current status and a counter for historical performance in that category.
Each table represents the parameters for health at a specific
priority of MPEG performance. Left to right they are Priority 1, 2, 3,
and a fourth column labeled Miscellaneous.
– Priority 1 parameters are critical for the MPEG Transport Stream
to be capable of being decoded. Note that sync, continuity
count, and PAT/PMT tests are represented in Priority 1.
– Priority 2 parameters are recommended for continuous
monitoring. In application most of these parameters directly
affect the quality of Program presentation. Note that all the PCR
tests are represented in this group.
– Priority 3 parameters are defined as optional. These are tests
specific to the DVB SI data and would be irrelevant to any system
not deploying a DVB Electronic Program Guide (EPG) in-band to
the transport stream.
– The Miscellaneous column is not part of TR 101-290. It is an
extension unique to the JDSU DTS-330, providing an additional
tier of performance metrics that are pertinent to the concept of
an MPEG health check.
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