Psi/Si Table Analysis - ADInstruments S7200 Operation Manual

AD INSTRUMENTS S7200 TV Signal Analyzer Operation Manual

6.12.7. PSI/SI Table Analysis

The "Program Specific Information" (PSI) has exactly the same structure. The PAT
has a PID of zero and begins with a table ID of zero. The PMT has the PIDs defined
in the PAT as PID and has a table ID of 2. The CAT has a PID and a table ID of 1 in
each case. The PSI can be composed of one or more transport stream packets for
PAT, PMT and CAT depending on content.
Apart from the PSI tables PAT, PMT and CAT, another table, the "network
information table" (NIT) is provided in principle but not standardized in detail. It
was actually implemented as part of the DVB (Digital Video Broadcasting) project.
All tables are implemented through the mechanism of sections. There are non-
private and private sections. Non-private sections are defined in the original
MPEG-2 Systems Standard. All others are by default private. The non-private
sections include the PSI tables and the private ones include the SI sections of DVB
which are used for data broadcasting. The header of a table contains the version
number of a table and information about the number of sections of which a table
is made of.
Taking advantage of the "private section" and "private table" features, the
European DVB Group has introduced numerous additional tables intended to
simplify the operation of the set-top boxes or quite generally of the DVB receivers.
Called "service information" (SI), they are defined in ETSI Standard ETS300468.
They are the following tables:
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