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7
Absolute Measurement Examples
RF Synthesizer using DCFM
Selecting Loop
Suppression
Verification
Figure 7-26 Selecting Loop suppression Verification
Setup
Considerations for
the RF Synthesizer
using DCFM
Measurement
7-40
E5500 Phase Noise Measurement System Version A.02.00
1
Using
Figure 7-26
as a guide, navigate to the Cal tab.
2
In the Cal dialog box, check Verify calculated phase locked loop
suppression and Always Show Suppression Graph. Select If
limit is exceeded: Show Loop Suppression Graph.
3
When you have completed these operations, click the Close
button
.
Measurement Noise Floor
The signal amplitude at the R input (Signal Input) port on the
Agilent 70420A sets the measurement noise floor level. Use
Figure 7-27
and
Figure 7-28
provide a noise floor level that is below the expected noise floor of
your UUT.
to determine the amplitude required to
Document Part No. E5500-90024 Ed. 1.0
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