Measurement Functions
2–10
MTD200 MPEG Test Decoder User Manual
PID_error (1st priority)
The PMT (Program Map Table) entries reveal the elementary-stream PIDs that
are contained in the transport-stream multiplex. To decode a program with the
corresponding PID, these packets must be contained in the transport stream, and
for the MPEG-2 decoder to function error-free these packets also need to be
transmitted at certain intervals. The DVB Measurement Guidelines (ETR 290)
speak of a user specified period, which means that it can be freely selected by the
user. The preset value for the MPEG test decoder is 0.5 s, but it can be modified
in the MONITORING / LIMITS menu according to individual requirements
(refer to MONITORING / LIMITS Menu on page 4–15).
In the DVB Measurement Guidelines (ETR 290), the preconditions for a
PID_Error message are set as follows:
PID ERROR is signaled if
the interval between two elementary-stream packets of the same PID is > 0.5 seconds
An error of this type (cumulative message) is indicated by the LED labeled PID
lighting (line of LEDs at front panel). More detailed information on the type of
PID error as listed in the above table can be obtained from the monitoring report.
Summary of Contents for MTD200
Page 1: ...User Manual MTD200 MPEG Test Decoder 070 9951 00...
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Page 29: ...Introduction to Digital TV Transmission Technique 1 14 MTD200 MPEG Test Decoder User Manual...
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Page 167: ...Remote Control 5 70 MTD200 MPEG Test Decoder User Manual...
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Page 174: ...Maintenance and Checking 6 6 MTD200 MPEG Test Decoder User Manual...
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Page 204: ...Glossary Glossary 10 MTD200 MPEG Test Decoder User Manual...
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Page 209: ...Index Index 4 MTD200 MPEG Test Decoder User Manual...
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