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S7200 TV Signal Analyzer Operation Manual
indicator.
(5) PCR_accuracy_error
If the PCR jitter exceeds ±500 ns, a PCR_accuracy_error will be set.
(6) PTS_error
The spacing between two PTS values must not be greater than 700 ms to avoid a
PTS error.
(7) CAT_error
An MPEG-2 transport stream packet can contain scrambled data, but only the
payload must be scrambled, never the header or the adaptation field. A scrambled
payload is flagged by two special bits in the TS header, the Transport Scrambling
Control bits. If both bits are set to zero, there is no scrambling. If one of the two
is not zero, the payload part is scrambled and a Conditional Access Table (CAT) is
needed to descramble it. If this is missing or only rarely there, a CAT_error occurs.
The CAT has a 1 as PID and also a 1 as table ID. Apart from the EIT in the case of
the transmission of a program guide, all DVB tables must be unscrambled.
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