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NOTE
Figure 8-11
Residual Measurement Fundamentals
The Calibration Options
8. Adjust the phase difference at the phase detector to 90 degrees
(quadrature) either by adjusting the test frequency or by adjusting an
optional variable phase shifter or line stretcher. Quadrature is achieved
when the meter on the front panel of the phase noise interface is set to
zero.
For the system to accept the adjustment to quadrature, the meter must be
within ±2 mV to ±4 mV.
9. Reset quadrature and measure phase noise data.
Calibration Source Beatnote Injection
8-18 Agilent Technologies E5500 Phase Noise Measurement System
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