Keysight N9915-90020 User’s Guide 145
Calibration for NA, CAT, and VVM ModesFUTURE
Verifying Calibration and Jumper Cable Integrity
— Because all LOAD standards have delay, you should see a small amount of
phase rotation as a function of frequency. In general, the measurement
result should agree with the characteristics of the calibration standard.
Test the Jumper Cable
With the LOAD standard still connected, move the jumper cable while
observing the trace.
— If the measurement trace is relatively stable, the jumper cable is of good
quality.
— If you observe significant movement in the peaks of the measurement trace
when moving the cable (>5 dB), the jumper cable may need to be replaced.
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