5. We have a lot of spacing constraints, but we only care about trace-to-trace spacing right now (line-to-line). Double-click
the column that says Line To at the top. That expands our Line-to-Object options (e.g. Line to Line, Line to Thru Pin, Line
to SMD Pin, etc.).
6. We care about line to line spacing. Set the value to 12 mils = 0.3048 mm (you can type it in as 12 mils and it will automat-
ically convert it to mm or vice versa).
7. Now let's apply the constraint to a critical net, like Clock.
8. Notice the 220V Spacing Constraint Set as well. Its traces are set to be at least 3.400 mm (133.858 mils) away from all
other traces.
This is nice but what about regions that need tighter spacing?
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OrCAD X High-Speed Digital Design Guide