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Figure 84 Requirements for noise exceeding small angle limit
Measurement options
If the observed level exceeded the small angle line at any point beyond the PLL
bandwidth set for the measurement, you need to consider one of the following
measurement options.
1
2
3
4
Agilent E5505A User's Guide
Tuning Range (PTR) necessary to provide a sufficient PLL bandwidth to
make the measurement.
e5505a_user_peak_tune_range.ai
rev2 10/24/03
Evaluate your source using the noise data provided by the RF analyzer in
the procedure you just performed.
Increase the PTR if possible, to provide a sufficient PLL bandwidth to
suppress the noise. (For information on increasing the PTR, refer to
Changing the PTR in this section.)
Reduce the noise level of the signal sources.
Use the Discriminator technique to measure the phase noise level of your
source.
Absolute Measurement Fundamentals
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