HP 8711C User Manual page 245

Calibrating for Increased Measurement
Accuracy
Choose an Appropriate Calibration Method
Step 3: Verify
Once a measurement calibration has been generated with a user-defined
Performance
calibration kit, its performance should be checked before making device
measurements. To check the accuracy that can be obtained using the new
calibration kit, a device with a well-detied frequency response (preferably
unlike any of the standards used) should be measured. The verification
device must not be one of the calibration standards: measurement of one of
these standards is merely a measure of repeatability.
'lb achieve more complete verification of a particular measurement
calibration, accurately known verihcation standards with a diverse magnitude
and phase response should be used. NBS traceable or HP standards are
recommended to achieve verifiable measurement accuracy.
The published specifications for your analyzer system include accuracy
C A U T I O N
enhancement with compatible calibration kits. Measurement calibrations
made with user-defined or modihed calibration kits are not subject to those
analyzer specihcations.
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