Tektronix WFM8200 Technical Reference page 114

Video and general performance tests
98
RGB gain
13. Set the SD Anlg PixMon to RGB:
a. Press the CONFIG button.
b. Select Outputs, SD Anlg PixMon, and then RGB.
14. Connect the Y/G channel of the VGA to 5x BNC adapter cable to the test
oscilloscope CH 1 input.
15. Use the test oscilloscope cursors to measure the voltage difference from
blanking (black) to white level. Record this value in the SD G PixMon Gain
location of the test record. An acceptable value will lie in the range between
Vmin and Vmax (step 13). (See page 95, Test oscilloscope gain calibration.)
16. Repeat steps 14 and 15 for the B and R signals, using the Pb/B and Pr/R
cables, respectively.
Offset check
17. Remove the Pr/R cable from the test oscilloscope. Increase the test
oscilloscope gain to 50 mV/div. Adjust the CH 1 vertical position to align the
trace with the center graticule line.
18. Connect the Y/G channel of the VGA to 5x BNC adapter cable to the test
oscilloscope CH 1.
19. Check that the G signal blanking level is within 1 division of the center
graticule line (0V ± 50 mV). Record pass or fail in the test record.
20. Repeat steps 18 and 19 with the B and R signals, using the Pb/B and Pr/R
cables, respectively.
21. Set the SD Anlg PixMon to YPbPr:
a. Press the CONFIG button.
b. Select Outputs, SD Anlg PixMon, and then YPbPr.
22. Check that the Y, Pb, and Pr signal blanking levels are 0 V ± 50 mV, using the
Y/G, Pb/B, and Pr/R cables, respectively. Record pass or fail in the test record.
WVR8200 and WVR8300 Specifications and Performance Verification