Tektronix RTX100A, Service Manual

Page: 54 / 160

Performance Verification
3-8
RTX100A ISDB-T RF Signal Generator Service Manual
31. Press the PLAY button on the RTX100A to start playing the
SPI214Mbps.trp file.
32. Verify that the hierarchic view is displayed on the screen and that no error
messages appear. In addition, verify that the bit rate is 40 Mbps and that the
transport stream packet size is 188 bytes.
NOTE. Ignore Program 3 and PID 120 (0x78) errors in the hierarchical view
because these are caused by the original test40.TRP file.
33. Press the STOP button on the RTX100A.
34. Close the TS Compliance Analyzer window.
This test confirms that the external clock/reference input (Clock/Ref In) and
external trigger input (Trig In/Out) on the RTX100A are functioning correctly.
Equipment
i d
MPEG analyzer
q p
required
Function generator
Two 50
Ω
BNC cables
Parallel interface cable
test64.TRP file
1. Use a 50
Ω
BNC cable to connect the Clock/Ref In connector on the
RTX100A to the Ch1 connector on the function generator. See Figure 3-4.
2. Use the 50 Ω BNC cable to connect the Trig In/Out connector on the
RTX100A to the Ch2 connector on the function generator. See Figure 3-4.
3. Use the parallel interface cable to connect the SPI In/Out connector on the
RTX100A to the DVB/SPI In connector on the MPEG analyzer. See
Figure 3-4.
External Clock/Reference
and External Trigger
Inputs