Verifying Calibration And Jumper Cable Integrity; Verify Calibration - Keysight N9923A FieldFox User Manual

To find the best choice for your DUT:
 Press Preset then Preset.
 Select the appropriate S-Parameter and other settings (frequency range,
 Press Trace 6 then
 Press
 Press Cal 5 then
 Select a CalReady Cal to compare with the current setting.
 Press Esc to exit the cal menu.
 View the differences in the two traces.

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.
Verify a Calibration
 Connect a LOAD standard at the calibration reference plane (where calibration
 In CAT Mode, select
 In NA Mode, select
 Observe the trace on the FieldFox screen:
Verifying Phase Accuracy
 Connect a LOAD standard at the calibration reference plane (where calibration
 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 phase
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.
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Enhanced Response
o
(S12 and S22) measurements separately. Therefore, when measurements in only
one direction are required, this choice provides faster trace measurements than
a full 2-port cal. Also choose an Enhanced Response Optimization. Learn more
on page 73.
resolution, and so forth).
Math and Memory
Data & Memory.
More
standards were connected). This may be at the end of the jumper cable or at
FieldFox PORT 1 connector.
Return
S11
Lower than 35 dB indicates a GOOD calibration.
o
Higher than 0 dB indicates that you should recalibrate.
o
standards were connected).
rotation as a function of frequency. In general, the measurement result should
agree with the characteristics of the calibration standard.
(default) – Corrects forward (S21 and S11) and reverse
then Data->Mem.
Loss.
with Log Mag format.
FieldFox User's Guide