Tektronix MTG100 - Manual (Page 102)

Hierarchy Display
MTG100 & MTG300 MPEG Generator User Manual
3Ć43
Table 3Ć42: Replace Setup dialog box parameters (Cont.)
Parameter Description
File Size Shows the size of the selected section file.
Time System Shows the reference time used by the Start Time parameter to start the file
replacement: Relative, TDT, TOT, or STT. Relative is displayed when a TDT,
TOT, or STT is not present in the transport stream. TDT, TOT, or STT is
displayed when a TDT, TOT, or STT is present in the section file.
For the Relative mode, data replacement starts when the period of time set
in the Start Time parameter has elapsed after the start of transport stream
output. For the TDT, TOT, and STT modes, data replacement starts when
the time described in the TDT, TOT, or STT corresponds to the time set in
the Start Time parameter.
PID Shows the PID value of the table corresponding to the section data.
Section Sets the mode for how section data will be contained in the transport stream
packets. You can select SINGLE or MULTI. Refer to Section Modes on
page 3Ć83 for more information.
Start Time Sets the time when data replacement is started. You can set the time value
from 00:00:00:000 to 24:59:59:999Ă(hoursĂ:ĂminutesĂ:ĂsecondsĂ:ĂmillisecĆ
onds). How this Start Time parameter works depends on the setting of the
Time System parameter in this dialog box.
When the Time System parameter is Relative, data replacement starts when
the period of time set in this Start Time parameter has elapsed after the
start of the transport stream output.
When the Time System parameter is TDT, TOT, or STT, data replacement
starts when the time described in the TDT, TOT, or STT of the transport
stream corresponds to the time set in this Start Time parameter. For
userĆinserted TDTs, TOTs, and STTs, the TDT Item, TOT item, and STT
Item dialog boxes contain a parameter to set the start time. When the start
time setting in this dialog box matches the start time setting in the TDT
Item, TOT item, or STT Item dialog box, data replacement is started.
Continuous Sets the duration for data replacement. When you select TIME, you can set
the time value from 00:00:00:000 to 24:59:59:999Ă(hoursĂ:ĂminutesĂ:ĂseĆ
condsĂ:Ămilliseconds). When you select INFINITE or set the time value to
00:00:00:000, the data replacement duration is set toĂinfinite.
File Interval Sets the time interval between data replacements. The replacement file will
be repeatedly inserted into the transport stream output at the specified time
interval. You can set the interval period from 100 ms to 3000 ms in 10 ms
steps.
Packet Interval Data in the replacement file is packetized by the MPEG generator prior to
being inserted in the transport stream output. Use this parameter to set the
time interval between the packets of the replacement file. You can set the
packet interval period from 1 to 1000 packets in 1 packet steps.
Replace Mode Sets how the selected section data are replaced with the original data. You
can select Section End or Timing. Refer to Replacement Modes on
page 3Ć84 for more information.
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