Steps to Execute Constraint for Impedance Control:
1. Open the Constraint Manager.
2. Navigate to the Electrical > Electrical Constraint Set > Impedance worksheet.
3. Define target impedance values for different trace types (e.g., single-ended).
4. You can then go to the Electrical > Net > Routing > Impedance worksheet and apply the constraint to any net, net class,
or net group.
5. Then you can determine whether the nets are adhering to the rules inside the constraint set by right clicking a net name
and selecting Analyze.
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OrCAD X High-Speed Digital Design Guide