Programming Examples 15
U8480 Series Programming Guide 369
Real-Time Measurement Uncertainty
The Real-Time Measurement Uncertainty (RTMU) feature enables you to obtain
the Measurement Uncertainty (MU) for your test setup by dynamically calculating
the MU as measurements are being made. The DUT Gamma, which is used to
determine the mismatch between the DUT and the sensor, may be selected as a
Single Point Gamma, Table-Based Gamma, or S-Parameter.
– For Single Point Gamma, the DUT Gamma you provide will be applied to the
MU calculations across all frequencies in the sensor operating range.
– For Table-Based Gamma, you may provide a list of Gamma values for the
desired measurement frequencies.
– For test setups that include a 2-port device, select S-Parameter as the DUT
Gamma. The Gamma values will then be taken from the selected S-Parameter
table.
If you want the mismatch to be included as a source of uncertainty in the MU
calculation, follow the steps below:
– Disable the Gamma Correction feature
– Disable the S-Parameter Correction feature
The following programming sequence examples describe some simple commands
to accomplish the steps as outlined above.
Example 1
– Enter the Single Point Gamma
– Turn on the RTMU feature
The values for Single Point Gamma and Table-Based Gamma are the same as
those for the Gamma Correction feature.
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