Video and General Performance Verification Procedures
EDH and H D SDI Input
Equalization Range
(Option HD)
This test uses a
cable clone to simulate cable. This verifies that the waveform
monitorcan receive signals that have passed through long cables.
EDH.
1. Set the waveform monitor to the factory presets. (See page 60, Restore the
Factory Presets.)
2. Connect the TG2000 HDVG1 output to the TG2000 HDST1 input.
3. Connect th
e TG2000 HDST1 output to the waveform monitor SDI A input.
4. If you do not have the video status screen displayed, press the Display Select
4 button,
press and hold the STATUS button, select Video Session, and press
the FULL button to display the tile full screen.
5. Press th
e STATUS button to close the menu.
6. Select the 1080i59.94 “SDI Equalizer Test” signal from the TG2000 HDVG1.
7. Set the TG2000 HDST1 SDI parameters for a 1.0 error rate.
8. Check that the Y Chan and C Chan CRC Error readouts, Err Seconds column,
shown in the Video Session display, are incrementing at a rate of one per
second.
9. Record Pass or Fail in the test record.
Cabl
e Length Accommodation.
10. Connect a cable from an output of the TG2000 HDVG1 to the 80 m section of
the HD Cable clone.
11. Use a second cable to connect the other port of the cable clone section to the
SDI A connector on the waveform monitor.
12. On the TG2000 HDVG1, set the output to the SDI Matrix signal.
13. Press the FULL button to return to 4-tile view.
14. You should see a stable picture and waveform on the waveform monitor
display.
15. You should see that all of the CRC Error indicators in the Video Session
screen read OK.
16. Connect additional sections of the HD Cable Clone into the signal path to
find the longest length of “ cable” that does not generate any CRC errors in a
10-second period.
17. Add the HD Cable Clone section lengths to get the total length in meters of
Belden 8281 cable. Divide by 4 to calculate the attenuation in dB at 750 MHz.
18. Record the value in the test record.
84 Waveform Monitors Specifications and Performance Verification
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