Critical Signal Spacing Constraints
For critical traces, create a new spacing constraint set (SCS) by doing the following:
1. Navigate to the Spacing > Spacing Constraint Set > All Layers worksheet.
2. Right click the HSD_FPGA object.
3. Choose Create > Spacing CSet…
4. Name the constraint set something that indicates the spacing, like 12 mils (3x trace width, so 3x4 mils = 12 mils), so name
it SCS1_12MILS. Then it will populate the list as shown below.
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OrCAD X High-Speed Digital Design Guide
