Video and General Performance Verification
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WVR6100, WVR7000, and WVR7100 Specifications and Performance Verification
5.
Terminate the other SDI Input A connector.
6.
Measure the Return loss from 300 kHz to 1.5 GHz. Record the lowest return
loss value (the biggest reflection) over the frequency range in the test record.
7.
Repeat steps 4 through 6 for SDI Input B.
This test uses a network analyzer to check the reflections from the input. You can
also use the Spectrum Analyzer, tracking generator, and return loss bridge to
make this measurement.
1.
Turn on the network analyzer and set it for Return loss, the S11 measure-
ment.
2.
Set the frequency range for approximately 300 kHz to 35 MHz.
3.
Use the calibration kit and calibrate the network analyzer with one of the
BNC cables attached.
4.
Connect the calibrated end of the cable to one of the Reference inputs on the
waveform rasterizer.
5.
Terminate the other Reference connector.
6.
Measure the Return loss from 300 kHz to 6 MHz. Record the lowest return
loss value (the biggest reflection) over the frequency range in the test record.
7.
Measure the Return loss from 300 kHz to 30 MHz. Record the lowest return
loss value (the biggest reflection) over the frequency range in the test record.
Check that DUT can reference to NTSC and PAL while viewing digital signals.
1.
Press FACTORY on the waveform rasterizer.
2.
Press EXT to enable external reference mode.
3.
Connect an SDI color-bars signal to the SDI A input. Use a signal type
appropriate to the unit under test:
H
WVR7000 / WVR7100: 1080i 59.94 color bars from HDVG1
H
WVR6100: 525/270 color bars from DVG1
Terminate the SDI loop-through connector.
4.
Apply an NTSC black signal from the AVG1 output to the Reference input
of the waveform rasterizer. Terminate the other Reference input with a
precision termination.
5.
Check that the lower-left corner of the waveform rasterizer display shows the
proper standard for the reference.
External Reference
Return Loss
External Reference
Formats Supported:
Bi-Level