Using Differential Pairs in Allegro PCB Editor
Learn more at Cadence Support Portal - https://support.cadence.com
© 2019 Cadence Design Systems, Inc. All rights reserved worldwide. Page 24
4. Create a Net Spacing Class (NCLs) and assign all DPs to the same class.
a. In the SPACING domain of Constraint Manager, select the Net > All
Layers worksheet.
b. Under the Objects column, select all DP objects.
c. Right-click on one of the selected objects and choose Create > Net
Class.
d. Enter a meaningful name (DP_CLASS) and click OK.
5. Assign the SCSet from step 3 to the NCls.
a. In the SPACING domain of Constraint Manager, select the Net > All
Layers worksheet.
b. Select the Referenced Spacing CSet cell for the NCls row and select
the SCSet that was created in step 3 above.