HP 8590 E-Series, Calibration Manual

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14. Reference Level A ccuracy ,
HP 8591EM
This performance verication test must be performed with the EMC analyzer set
in the spectrum analyzer mode.
A 50 MHz CW signal is applied to the INPUT 50 of the EMC analyzer through
two step attenuators . The attenuators increase the eective amplitude range of
the source . The amplitude of the source is decreased in 10 dB steps and the
EMC analyzer marker functions are used to measure the amplitude dierence
between steps . The source's internal attenuator is used as the reference
standard. The test is performed in both log and linear amplitude scales .
It is only necessary to test reference levels as low as 17 dBV (with 10 dB
attenuation) since lower reference levels are a function of the EMC analyzer
microprocessor manipulating the trace data. There is no error associated with
the trace data manipulation.
Equipment Required
Synthesizer/level generator
Attenuator , 1 dB steps
Attenuator , 10 dB steps
Cable , BNC 122 cm (48 in) (two required)
A dapter , Type N (m) to BNC (f)
A dapter , BNC (m) to BNC (m)
Figure 2-17. Reference Level A ccuracy T est Setup , HP 8591EM
2-70 P erformance V erication T ests