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Performance Verification: Analog Section
4-14
WFM90D and WFM91D Service Manual
13. Select --10 dBu from the Operating menu.
14. Check that the display amplitude is within 0.5 dB of the reference level
graticule lines.
15. Set the audio generator for a 50 Hz tone output, with an amplitude of
+8.0 dBu.
16. Select 8dBufrom the Operating menu.
17. Check that the display amplitude is within 0.5 dB of the reference level
graticule lines.
18. Set the audio generator frequency to 5 kHz.
19. Check that the display amplitude is within 0.5 dB of the reference level
graticule lines.
20. Set the audio generator frequency to 10 kHz.
21. Check that the display amplitude is within 0.5 dB of the reference level
graticule lines.
22. Set the audio generator frequency to 15 kHz.
23. Check that the display amplitude is within 0.5 dB of the reference level
graticule lines.
24. Set the audio generator frequency to 20 kHz.
25. Check that the display amplitude is within 0.5 dB of the reference level
graticule lines.