Verifying Calibration And Jumper Cable Integrity; Verify A Calibration; Test The Jumper Cable - Keysight FieldFox A Series User Manual

Table of Contents

Calibration for NA, CAT, and VVM Modes

Verifying Calibration and Jumper Cable Integrity

After calibrating, it is important to verify that the calibration is good. When

using a jumper cable, also verify that the cable is of high quality.

— Connect a LOAD standard at the calibration reference plane (where

— In CAT Mode, select

— In NA Mode, select

— For frequencies lower than 9 GHz, observe the trace on the FieldFox

Verifying Phase Accuracy

— Connect a LOAD standard at the calibration reference plane (where

— In NA Mode, select a S11 Reflection with Polar or Smith Chart format.

— Because all LOAD standards have delay, you should see a small amount of

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

— If you observe significant movement in the peaks of the measurement trace

calibration standards were connected). This may be at the end of the

jumper cable or at FieldFox PORT 1 connector.

— Lower than 35 dB indicates a GOOD calibration.

— Higher than 30 dB indicates that you should recalibrate.

calibration standards were connected).

phase rotation as a function of frequency. In general, the measurement

result should agree with the characteristics of the calibration standard.

when moving the cable (>5 dB), the jumper cable may need to be replaced.

with Log Mag format.

Keysight N9927-90001 User's Guide