Tektronix MTM400 사용자 설명서

Stream View 

 

MTM400 MPEG Transport Stream Monitor User Manual 

Maintenance Mode 

When enabled, no alarms (TTL, relays or audible) will be raised 
for the stream. The RTM device will continue to monitor the 
stream and errors will be logged. The action of enabling and 
disabling maintenance mode is also recorded in the log. In this 
mode, all buttons are colored black. 

This button returns the MTM400 to the initial state upon 
acquiring a stream; all tests are reset and all SI information is 
flushed. This is useful if you make a seamless switch between 
nearly identical streams, if there is no change in the SI identity 
and/or versions to inform the MTM400 that is a new stream, you 
can reset the stream manually here.  

See MTM400 Configuration Files, page 3

-85. 

Scheduling* See 

Scheduling, page 3-91. 

Factory Default    When selected, all stream configuration items for the current 

stream are reset to their factory defaults. 

* - licensed options (see Table 1-5: MTM400 options summary, page 1-6). 

Each program in a transport stream can contain one or more elementary streams 
(for example, video, audio and control). The content of each elementary stream is 
carried as packets of data; each elementary stream is assigned a Packet Identifier 
(PID). Service Logging allows packet counts for specified PIDs (range: 0 to 100) 
to be collected at a user-definable interval. 

Typically this information can be used by network operators to bill customers for 
transferred data. Network operators may want to present an itemized bill for 
packets of data carried in each time period. 

The data is stored as a grid. After each time period, all the counts move down one 
position and a new count is started in the top row. The grid is 64 rows (time 
periods) deep and 100 PIDs wide. So up to 100 PIDs may be monitored, with a 
common timing resolution.