Variables Tab for Design of Experiments

The Variables tab for the Design of Experiments Setup dialog displays list of the variables defined for the Design and Project as Optimetrics/Design of Experiments variables.

The columns list the Variable names, the current Min and Max Values and Units, and provides options for the following:

• Override--check this to override the current design value. Unchecking this causes a dialog to appear asking you to confirm the return to the design value.
• Include--whether to include the variable in an analysis.
• Discrete--Discrete Variables physically represent different configurations or states of the model. When check box in the Discrete column is checked the button in the “Levels” column will be enabled and Use Manufacturable Values is disabled.

  

  The Levels show the variable values. For continuous variable, Levels is determined by the min/max columns. For Integer variables Levels can be a subset of the min/max range. The discrete values can be bounded by a min/man range and/or manufacturable values.

  Click the enabled Levels button for the row to edit the Discrete values. An edit dialog for the variable appears.

  

  Continuous Variables, with Discrete unchecked, the values physically vary in a continuous manner between a lower and an upper bound (min/max) defined by the user. With continuous variables, you can also check Use Manufacturable Values.

• When you enable the check box in the “Use Manufacturable Values” column the button in the “Levels” column is enabled. Manufacturable Values represent real-world manufacturing or production constraints. The min max values for the variable will be upper and lower constraints on the available manufacturable values bounded by the min/max range. If you check Use Manufacturable values, you edit the Levels to define the Manufacturable values. Click the Levels button to edit the values. An edit dialog for the variable appears.