Tuning a Variable
- Before tuning a variable, you must specify that you intend for it to be used during a tuning analysis in the Properties dialog box.
- On the Twin Builder menu, click Tune
.
The Tune
dialog box appears. - Clear the Real Time option. If this option is selected, a simulation begins immediately after you move the slider.
- In the Sim. Setups column, select the solution setup you want Twin Builder to use when it solves the specified design variation. Twin Builder solves the analysis using the solution setup you select. If you select more than one, results are generated for all selected solution setups.
- In the Nominal
text box for the variable you want to tune, type the value of the variable
for Twin Builder to solve, or drag the slider to increase or decrease
its value.
Warning:
Variable values must be single real numbers, or expressions that evaluate to single real numbers. Complex numbers cannot be used as the values of variables in any optimetric analysis.
Alternatively, if you want Twin Builder to solve a range of values, specify a linear range of values with a constant step size:
- Select the Sweep check box.
- In the text box below the Step value, type the starting value in the variable range.
- Type the step size, or difference between variable values in the sweep definition, in the Step text box. The step size determines the number of design variations between the start and stop values. Twin Builder solves the model at each step in the specified range, including the start and stop values.
- In the text box just below the variable name, type a stopping value in the variable range.
- Click Tune.
You can click Abort to abort the tuning process, if desired.
Note:Sweeping or using a complex variable is not allowed in any optimetrics setup, including optimization, statistical, sensitivity, and tuning setups.
- When finished tuning, you can:
- Save the tuned state.
- Apply the tuned state to the design.
- Revert to a saved tuned state.
- Reset variable values.
Note:Improper or undefined simulation setups will cause errors during Tuning Analysis. To verify the analysis setups, select Analysis > Analyze in the Project Manager pane to analyze the nominal circuit and review the messages in the Twin Builder Message Manager pane prior to running the Tuning Analysis.