Specify whether to display results for VDA 5 and
specify the values to use for any applicable sources of uncertainty that are not from
the data in the study.
Display VDA 5
results
Select this option to calculate statistics for a VDA 5 study, such as uMP and
%QMP.
Resolution
Specify the gage resolution (uRE). Resolution is the least increment of measurement
that the gage accurately reports. For example, if the gage accurately reports
measurements to the tenths place, then specify 0.1.
Source of uncertainty
(error)
Enter values greater than 0 for sources of uncertainty to include in the analysis. To
leave a source of uncertainty out of the calculations, do not enter a value.
- Calibration (uCAL)
- Specify the calibration uncertainty (uCAL) in the units of the data. The
calibration uncertainty is the uncertainty in the known value of the
reference standard. the determination of the uncertainty is part of many
calibration processes. Usually, this value comes from the calibration
certificate.
- Linearity (uLIN)
- Specify the linearity uncertainty (uLIN) in the units of the data. The
linearity uncertainty is the uncertainty from changes in the bias of the
gage across its measurement range. Usually, this value comes from a
linearity study where the reference part was within the range of
measurements.
- Other factors
(uREST)
- Specify the uncertainty because of any other factors that add uncertainty.
For example, if you know that the measurements have greater variation when
the data collection is at a higher temperature, enter a value to account for
uncertainty due to temperature. Enter values in the units of the data.
- If you have separate values for multiple additional factors, the analysis
calculates their combined effect. Specify up to 100 values that are greater
than 0. Separate multiple values with spaces.
- You can also specify a column that contains values from the other factors.
In the column, use up to 100 values that are greater than 0.
- Repeatability at reference
(uEVR)
- Specify the uncertainty from the repeatability at a reference part.
Repeatability is the uncertainty from measurements of the same part, with
the same device, by the same operator. Usually, this value comes from a Type
I Gage Study.
- Bias (uBI)
- Specify the uncertainty from the bias of the measurements. Bias is the
estimated difference between a known reference value and the average
measurement of the value. Usually, the estimate of the bias comes from a
study that esimates the bias of measurements of reference parts.
