248 Keysight B2980B User’s Guide, Edition 1
Function Details
Setup Integrity Checker
Operation
Figure 5-15 shows the operation of noise checker.
Figure 5-15 Operation of Noise Checker
If the one-sided F testing for 95 % reliability is performed on these results and the
calculated Variance Ratio is less than 1.4, the population A (Reference), where the
input switch is OFF, and the population B (Target), where the input switch is ON,
are deemed to be same. That means the noise level of the Target that includes
your measurement environment is considered to be the same as that of Reference.
Population A :
100 times Sampling
at Input Switch OFF
Population B :
100 times Sampling
at Input Switch ON
Population A :
Calculates Standard Deviation
(Reference)
Population B :
Calculates Standard Deviation
(Target)
Calculates and Displays Variance Ratio
of Population A to Population B
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