Verify Calibration; Verifying Calibration And Jumper Cable Integrity - Agilent Technologies FieldFox N9913A 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
 For frequencies lower than 9 GHz, 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
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
 If you observe significant movement in the peaks of the measurement trace
Calibration for NA, CAT, and VVM Modes
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).
phase rotation as a function of frequency. In general, the measurement result
should agree with the characteristics of the calibration standard.
quality.
when moving the cable (>5 dB), the jumper cable may need to be replaced.
then Data->Mem.
Loss.
with Log Mag format.
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