N5511A Phase Noise Test System User’s Guide 67
Absolute Measurement Fundamentals
Selecting a Reference (Dual Channel)
Example 1: Using a 100 MHz high-performance DUT as both REF1 and REF2
significantly reduces the number of cross-correlations - resulting in a dramatic
reduction in measurement time (~40 second to get to a -184 dBc/Hz
correlated device noise floor.
Figure 5-10
Using a 100 MHz High-Performance DUT
Example 2: Using a 9.6 GHz high-performance DUT as both REF1 and REF2
significantly reduces the number of cross-correlations - resulting in a dramatic
reduction in measurement time (~25 second to get to a -171 dBc/Hz
correlated device phase noise floor).
Figure 5-11
Using a 9.6 GHz High-Performance DUT
Summary of Contents for N5511A
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