ADInstruments S7200 Operation Manual page 204

AD INSTRUMENTS S7200 TV Signal Analyzer Operation Manual
Priority 3 parameters include: NIT_actual_error, NIT_other_error,
SI_repetition_error, Unreferenced_PID, SDT_actual_error, SDT_other_error,
EIT_actual_error, EIT_other_error.
(1) NIT_actual_error
Network Information Tables (NITs) as defined by DVB contains information on
frequency, code rates, modulation, polarization, etc. of various programs which
the decoder can use. It is checked whether the NIT related to the respective TS is
present in this TS and whether it has the correct PID.
(2) NIT_other_error
Further Network Information Tables (NITs) can be present under a separate PID
and refer to other TSs to provide more information on programs available on other
channels. Their distribution is not mandatory and the checks should only be
performed if they are present.
(3) SI_repetition_error
For SI tables, a maximum and minimum periodicity are specified in EN 300 468
and TR 101 211 documents. This indicator should be set in addition to other
indicators of repetition errors for specific tables.
(4) Unreferenced_PID
Each non-private program data stream should have its PID listed in the PMTs.
(5) SDT_actual_error
The SDT (Service Description Table) describes the services available to the viewer.
It is split into sub-tables containing details of the contents of the current TS
(mandatory) and other TS (optional). Without the SDT, the receiver is unable to
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