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Figure 8-12 Calibration Source Beatnote Injection
Document Part No. E5500-90024Ed. 1.0
4
Adjust the calibration source to the same output power as the
measured output power of the power splitter.
5
Adjust the output frequency such that the beatnote frequency is
within the range of the analyzers being used.
6
The system can now measure the calibration constant.
7
Disconnect the calibration source and reconnect the power
splitter.
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.
NOTE: 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.
E5500 Phase Noise Measurement System Version A.02.00
Residual Measurement Fundamentals
Calibration Options
8
8-17
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