Layer Pairs

Rule category: Manufacturing

Rule classification: Unary


This rule checks to ensure that the used layer-pairs match the current drill-pairs. The used layer-pairs are determined from the vias and pads found in the board, one layer-pair for each Start Layer-End Layer combination that is found.


Default constraint for the Layer Pairs rule.

  • Enforce layer pairs settings - specifies whether the check is made or not.

How Duplicate Rule Contentions are Resolved

All rules are resolved by the priority setting. The system goes through the rules from highest to lowest priority and picks the first one whose scope expression matches the object(s) being checked.

Rule Application

Online DRC, Batch DRC and during interactive routing.

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