| Variance Control Limits
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Use this dropdown list to select the
Variance control limits type:
- None. If this option is selected, the analysis will not generate any control limits on the Variance chart.
- Use defined UCL and LCL
- If
Use defined UCL and LCL option is selected, the analysis will look for variables named
*_RUCL and
*_RLCL for each characteristic (where '*' is the name of the characteristic) and use the values in the respective variables as the
Upper control limit and
Lower control limit values.
- Each time the value in the
*_RUCL or
*_RLCL variable changes moving downward in the column, the system will create a new set on the
Variance chart.
- If a value in the
*_RUCL or
*_RLCL variable is blank, the system will use the previous valid value found in the respective column.
- If no valid values are found in the
*_RUCL variable, the
Calculated UCL will be used as the
Variance chart UCL value if the
Calculate if defined variance limits are blank checkbox. If this option is not selected, the chart will not have a UCL.
- If no valid values are found in the
*_RUCL variable, the
Calculated LCL will be used as the
Variance chart LCL value if the
Calculate if defined variance limits are blank checkbox is selected. If it is not selected, the chart will not have a
LCL.
- Calculate UCL and LCL. If this option is selected,
UCL value will be computed for the
Variance chart and there will be no
LCL.
- Calculate UCL or Calculate LCL. If this option is selected,
LCL value will be computed for the
Variance chart and there will be no
UCL.
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| Check Variance Control Limits
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Select this checkbox to check for control limit violation on the
Variance
chart and raise an alarm.
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| Calculate if defined variance limits are blank
|
Select this checkbox to calculate the
Variance chart control limit, if you have selected to
Use defined UCL and LCL option the
Variance Control Limits dropdown list above, and that variable has blank or invalid values.
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| Calculate if defined variance limits are blank
|
Select this checkbox to calculate the
Variance chart control limit, if you have selected to
Use defined UCL and LCL option the
Variance Control Limits dropdown list above, and that variable has blank or invalid values.
|
| Process Sigma Multiplier for variance chart
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Use this miniscroll to select a user defined process sigma multiplier for calculating the control limits on the
Variance chart.
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| Variance Control Limit label name
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This text box allows you to choose the
Control limit label type on the
Variance chart from the following:
- Text only
- Text and number
- Number only
- None
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| Upper Variance Control Limit label name
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In this text box, enter a label for the
Upper Control limit when
Text only or
Text and number options are selected.
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| Lower Variance Control Limit label name
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In this text box, enter a label for the
Lower Control limit when
Text only or
Text and number options are selected.
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| Variance Control Limit violation name
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In this text box, enter the
Variance Control Limit Violation name to be used in the generated alarms spreadsheet and on the
Variance chart legend.
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