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7
Absolute Measurement Examples
Stable RF Oscillator
Figure 7-6 Noise Floor Calculation Example
7-8
E5500 Phase Noise Measurement System Version A.02.00
If the output amplitude of your UUT is not sufficient to provide an
adequate measurement noise floor, it will be necessary to insert a
low-noise amplifier between the UUT and the test set. Refer to
"Inserting an Device" in
Fundamentals" for details on determining the effect the amplifiers
noise will have on the measured noise floor.
VCO Reference Source
This setup calls for a second signal source that is a similar type to
that of the UUT. The second source is used as the reference source. In
order for the noise measurement results to accurately represent the
noise of the UUT, the noise level of the reference source should be
below the expected noise level of the UUT. (For additional help in
selecting an appropriate reference source, refer to
"Absolute Measurement Fundamentals".)
Chapter
6, "Absolute Measurement
Document Part No. E5500-90024 Ed. 1.0
Chapter
6,
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