Using Differential Pairs in Allegro PCB Editor
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2. Assign the ECSet to the appropriate DPs.
a. In the ELECTRICAL domain of Constraint Manager, select the Net >
Routing > Differential Pair worksheet.
b. Click in the Referenced Electrical CSet column for the DP row(s) and
select the DP_10 ECSet from the pull-down.
3. Create a Spacing Constraint Set (SCSet) with specific spacing rules for the DPs.
a. In the SPACING domain of Constraint Manager, select the Spacing
Constraint Set > All Layer(s) worksheet.
b. Right-click on the design name in the Objects column and select Create >
Spacing Set.
c. Enter a meaningful name (DP_SP) and click OK.
d. Enter the required DP line-to-line spacing constraint for the SCSet.
