evertz 7881TSM-IP, Руководство пользователя

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7881TSM-IP
User Manual
Version 1.0
Page - 41
SDT_PID, TDT_PID, EIT_PID, RST_PID, reserved_for_future_use PIDs, or PIDs user defined as
private data streams) not referred to by a PMT within 0.5 s.
•
SDT_error:
The SDT 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 IRD is unable to give the viewer a list of what services are available. It is also possible to
transmit a BAT on the same PID, which groups services into "bouquets".
•
SDT_Repetition_error: This test checks that the SDT information which describes the services
contained in a particular Transport Stream is transmitted at least every 2 seconds on PID 0x0011.
•
EIT Repetition: This test checks the EIT information that describes what is currently on and what will
be on next on each service in a particular Transport Stream. By default it is transmitted at least every 2
seconds.
•
EIT_error: The EIT (Event Information Table) describes what is on now and next on each service, and
optionally details the complete programming schedule. The EIT is divided into several sub-tables, with
only the "present and following" information for the current TS being mandatory. The EIT schedule
information is only accessible if the TS is not scrambled.
• RST_Repetition_error: This test checks that any two sections with table_id = 0x71 (RST) occur on
PID 0x0013 within 25 ms (or lower).
•
RST_error: The RST is a quick updating mechanism for the status information carried in the EIT.
•
TDT_Repetition_error:
This test checks that any two sections with table_id = 0x70 (TDT) occur on PID
0x0014 within 25 ms.
• TDT_error: Sections with table_id = 0x70 (TDT) not present on PID 0x0014 for more than 30 s. The
TDT carries the current UTC time and date information.
More information can be found at: http://www.etsi.org
7.6.2. P3 ATSC TABLES
•
MGT Repetition: Master Guide Table. For each type of PSIP tables, the MGT provides the location in
the Transport stream, the current version of the table and the length in bytes. This test checks that the
Master Guide Table repetition rates do not exceed 150ms.
• TVCT Repetition: Terrestrial Virtual Channel Table. Consists of virtual channel definitions where each
channel is characterized by the two-part channel number that the user will use to access the service, its
text name, how the service is physically delivered, its MPEG-2 program_number, its “source ID” and
the type of service. This test checks that the Terrestrial Virtual Channel Table repetition rates do not
exceed 400ms.
•
CVCT Repetition: Cable Virtual Channel Table. Consists of virtual channel definitions where each
channel is characterized by the two-part channel number that the user will use to access the service, its
text name, how the service is physically delivered, its MPEG-2 program_number, its “source ID” and
the type of service. This test checks that the Cable Virtual Channel Table repetition rates do not exceed
400ms.
• EIT Repetition: The PSIP table that carries program schedule information for each virtual channel, this
test checks the following is true: