Increase In Measured Noise As Ref Source Approaches Dut Noise - Agilent Technologies e1420b User Manual

Increase in Measured Noise as Ref Source Approaches DUT Noise

The graph shown in
reference source approaches the noise level of the DUT, the level measured by
the software (which is the sum of all sources affecting the test system) is
increased above the actual noise level of the DUT.
3.0
2.5
2.0
1.5
1.0
0.5
Amount expected DUT noise exceeds reference noise (dB)
Figure 291 Reference source and DUT noise levels
Agilent E5505A User's Guide
Figure 291
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Reference Graphs and Tables
demonstrates that as the noise level of the
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