To Perform A Calibration Check - HP 8711C User Manual

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3. Plot the results to disk or to hard copy for later comparison.
4. Compare subsequent calibration checks against the initial one and keep
track of the tune interval between the first calibration check and later
ones.
5. When the residual errors have drifted beyond what is acceptable, note
the tune interval and use that information to determine what is the best
calibration interval for your measurements.
6. Repeat the process above enough times to feel confident that your
calibration interval is correct.
The calibration check feature can be used on any of the transmission or
reflection calibrations available (including the factory default calibration). See
Calibration
Measurement
Transmission
Default
Response
Response & Isolation
Enhanced Response
Test Sat3
Reflection
Default
One Port
Test Sat3
1 0 - Open, S - Short, L - Load, T = Thru
2 See "Error Term Descriptions and Typical Values", later in this chapter,
3 Used with HP 8707X multiport test set only
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Table 6-2. Calibration Check Error Terms
Standards'
Needed
Source Match, load Match, Transmission Tracking
Source Match, load Match, Transmission Tracking
Source Match, load Match, Transmission Tracking, lsolatior
Source Match, bad Match, Transmission Tracking
Source Match, Load Match, Transmission Tracking
Diractivity, Source Match, Reflection Tracking
Diractivity, Source Match, Reflection Tracking
Diractivity, Source Match, Reflection Tracking
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Calibrating for Increased Measurement
Accuracy
Check the Calibration
Error Terms2
Computed
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