Tektronix MTS400 Series, Quick Start User Manual

Page: 46 / 96

Operation
Duplex Operation
The MTS400 Series system (including the MTS400P) can be operated in duplex mode (ASI/SMPTE/DVB Parallel (SPI) only).
For example, while the Player is playing out a stream, the TS Compliance Analyzer can be analyzing a separate stream or, if
the output is looped back to the input, the output of the Player can be monitored by TS Compliance Analyzer (TSCA).
NOTE. Duplex operation is unavailable on the MTX100B/RTX100B/RTX130B.
Setting Up Loopback
With loopback in operation you can:
Use the MPEG Player to play out a stream
Loop the instrument output back to the input
Monitor/analyze the incoming stream using the TSCA
Before starting:
Identify the stream to be played out (in this example, the sym1.mpg test stream is used).
Choose the output/input interface (ASI/SMPTE310 or DVB SPI) and make the necessary connections (loop between the
connectors) at the rear of the instrument.
In the following example, the stream is looped back using the ASI interface and the stream is looped in the player (to
play continuously).
NOTE. You can choose either ASI or SPMTE310 to be supplied through the BNC connectors. The DVB SPI output will
always be available, whatever the settings are in the player. IP is unavailable.
MPEG Player setup.
1. Open the MPEG Player: Start > Programs > Tektronix MTS400 > Player > MPEG Player .
2. Open a stream: File > Open … > sym1.mpg.
3. Make the following settings in the
Play menu:
Packet size: 188
Update: On
Sync: TS Packet
Loop: On
Other: Standard: DVB
TSCA setup.
1. Open the TSCA: Start > Programs > Tektronix MTS400 > Analyzers > TS Compliance Analyzer .
2. In the start-up dialog box ( Open Transport Stream …), select Change … in Stream Interpretation and select the DVB
base standard with no extensions. Close the Stream Interpretation dialog box.
24 MTS400 Series Quick Start User Manual