Select the General tab in the Variable Quality Characteristics Properties dialog box.
The Active box is checked by default to activate data collection for the product; clear to disable the option. Note that the Document must also be active for collection.
Enter a Name for the if it should different from the default.
Enter a Description for the variable; the description will display in the directory.
Select XBar-R or XBar-S chart set from the Calculation type drop-down list.
Select a floating-point array Point of two (2) elements in the Setpoint ID field if you want to use the current XBar-R or S value elsewhere in your project, or download them to a device.
The array contains numbers for:
XBar and range or
XBar and standard deviation.
Check Values or Points to specify the sampling parameters.
Enter an integer for the Subgroup size (sample size).
Enter an integer for the Gap size; that is, how many units will be skipped before the next sample is taken.
Select or create a Point for the Subgroup size.
Select or create a Point for the Gap size.
The Gap size is how many units will be skipped before the next sample is taken.
Step 3. Add and configure variable quality characteristics.