Newtec M6100 - TS Analyser

Newtec Proprietary
Confidentiality: Unrestricted
V1.4
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Features Descriptions M6100 Broadcast Satellite Modulator
12.7 TS Analyser
The transport stream analyser makes it possible to monitor the incoming transport stream. The
purpose of this feature is to help determine if a problem seen at the output of a satellite receiver is
due to a problem on the satellite link or to a problem in the head-end before the modulator.
Consequently, it provides the possibility to identify the root cause of service outages that happened
in the video head-end, or on the transmission path between the video mux and the satellite
modulator. Because the analyser is built into the modulator, inserting it does not change the
behavior of the signal or the topology of the network, making the troubleshooting easier. This leads
to a shorter defect resolution time.
Go to the following location to view the parameters in this functional block.
M6100> TS Analyser
• The TS analyser can be enabled at any time.
• It is possible to reset the TS analyser and this to restart an analysis of the incoming transport
stream.
When the user enables or resets the TS analyser the following alarms are reported:
• Pat_error;
• Sync_byte_error
• TS_sync_loss
These alarms should disappear after five seconds. When these alarms do not
disappear after five seconds it is needed to check the transport stream that is being
analyzed.
Measurement of the transport stream bit rate, variations in the bit rate may indicate errors in the
video processing head-end preceding the satellite modulator, in video source losses, still pictures,
failing video encoder etc. This measurement is made on the incoming stream. The measured bit
rate is accurate to the nearest entirely loaded packet. For example: for an incoming bit rate of
2250000bps or 149,6 TS packets/s. The actual measurement should be 149,6 packets/s but this
value is rounded off to 149 packets/s. This translates into a measured bit rate = 149 x 188 x8=
224096bps. In case of TSoIP input, measurement is done after some jitter removal, but before the
full rate smoothing performed just before the modulation stage. Jitter on the incoming signal may
thus affect this measurement a bit.
While not being a full-fledged TS analyser, this feature provides most of the
measurements needed for a good tracking of the origin of issues seen in a typical
head-end.