Tektronix MTD200, Руководство пользователя

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Measurement Functions
2–18
MTD200 MPEG Test Decoder User Manual
An error of this type is indicated in a cumulative message signaling several
single errors by the LED labeled OTHER lighting (in the line of LEDs on the
front panel). Additional information on the PID of the table, in which a repetition
rate error was found, can be obtained from the monitoring report.
NIT, SDT, EIT, RST and TDT_error (3rd priority)
These types of service information (SI) are also inserted into the transport stream
as additional data (multiplex) and contain items such as the current date, time,
and description of the TV program. Each of these tables is transmitted in the
form of packets with a given packet number (PID) and must be contained in the
transport stream at certain intervals according to the DVB specification.
However, not every SI has a different PID; packets for TDT and TOT as well as
SDT and BAT have identical PIDs. These tables are differentiated by an entry in
the table header, the so-called table index (table_id). This table_id enables an
MPEG-2 decoder working in compliance with the DVB standard to identify the
type of service information with which it is dealing.
Table 2–3 gives an overview of the service information according to the DVB
guideline ETS 300 468.
Table 2–3: Overview of service information according to DVB guideline ETS
300468
Service Information PID [hex] Table_id [hex] Max. interval [sec]
NIT 0x0010 0x40, 0x41, 0x42 10
SDT 0x0011 0x42, 0x46 2
BAT 0x0011 0x4A 10
1
EIT 0x0012 0x4E to 0x4F,
0x50 to 0x6F 2
2
RST 0x0013 0x71 —
TDT 0x0014 0x70 30
TOT 0x0014 0x73 30
Stuffing Table 0x0010 to 0x0013 0x72 —
1
Only if present.
2
For the current transport stream multiplexer.