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You can create specification elements by adding collection elements to your specifications. Collection element specification limits are defaulted to these specification elements. For example, if you create a specification element by adding the Frequency collection element to a specification, the target value of 2000, and lower and upper user-defined, specification, and reasonable range limits -- 1800-2200, 1720-2080, and 1600-2400 respectively -- are defaulted to the specification element.

Attention: If you are defining specification limits for numeric collection elements, the decimal precision of the collection element controls the decimal precision of the specification limits. For example, if the decimal precision of the collection element is 3, you can define specification limits of up to 3 decimal places such as 3.999.

   To define collection element specification limits:

1. Navigate to the Collection Elements window.

2. Select the Collection Element.

You can select any collection element, even those that are disabled.

3. In the Collection Elements window, choose the Spec Limits button. The Specification Limits window appears.

4. Enter the Target Value.

The target value represents the preferred value.

5. Enter the lower and upper User-Defined Range limits.

The lower and upper user-defined range limits can be used to represent a process control limit. Your user-defined limits can be inside of, outside of, or overlapping your specification range limits. The upper limits must exceed the lower limits.

6. Enter the lower and upper Specification Range limits.

The lower and upper specification range limits can represent engineering tolerances. The upper limits must exceed the lower limits.

7. Enter the upper and lower values Reasonable Range limits.

The lower and upper reasonable range limit ensures that you collect values that make sense. The upper limits must exceed the lower limits.

8. Save your work.

Note: You can explicitly save your work, but if you do not, your work is saved when the collection element is saved.