Tektronix MTM400 - Manual (Page 131)

Stream View
MTM400 MPEG Transport Stream Monitor User Manual 3-83
The timing resolution of counts is controlled by configuration file parameter PS4
(Packet Counting Bin Duration) multiplied by PS6 (Number of Packet
Counting Bins), typically PS4 * PS6 is set for 1000 ms.
PS4 is the
τ (tau) value for the PID occupancy bit rate measurement as defined in
TR 101 290. This value affects many measurements; in this case it ensures that the
timespan is a whole multiple of the bit rate counting interval and reduces sampling
errors. PS6 should be set to give the required count duration - Timing Interval
(PS4 * PS6 * 10).
Service Log Configuration
The Service Log parameters can also be set using the configuration file.
The example below shows how to monitor four PIDs. Note that the PIDs may be
specified as separate elements or as a space delimited list.
<?xml version="1.0" encoding="UTF-8"?>
<MTM400Configuration Name="Service Log Config"
xmlns:xsi="XMLSchema-instance"
xsi:noNamespaceSchemaLocation="config.xsd">
<Streams>
<Stream Number="1">
<PS6>10</PS6>
<PS4>100</PS4>
<ServiceLog>
<PIDS>301</PIDS>
<PIDS>302</PIDS>
<PIDS>304 410</PIDS>
</ServiceLog>
</Stream>
</Streams>
</MTM400Configuration>
This configuration can be embedded in a full configuration file, or just uploaded as
an incremental change (refer to Configuration File Structure in the MTM400
MPEG Transport Stream Monitor Programmer Manual).