HP 8590 E-Series, Руководство по калибровке

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41. Displayed A verage Noise Level,
HP 8594EM
This performance verication test must be performed with the EMC analyzer set
in the spectrum analyzer mode.
This performance verication test measures the displayed average noise level
within the frequency range specied. The EMC analyzer input is terminated in
50 .
The test tunes the EMC analyzer frequency across the band, uses the marker
to locate the frequency with the highest response , and then reads the average
noise in zero span.
T o reduce measurement uncertainty due to input attenuator switching and
resolution bandwidth switching, a reference level oset is added. The CAL OUT
signal is used as the amplitude reference for determining the amount of oset
required. The oset is removed at the end of the test by pressing instrument
preset.
Equipment Required
T ermination, 50
Cable , BNC, 23 cm (9 in)
A dapter , Type N (m) to BNC (f)
Figure 2-63. Displayed A verage Noise Level T est Setup , HP 8594EM
2-280 P erformance V erication T ests