Electrical - Short-Circuit
This document is no longer available beyond version 4. Information can now be found here: Short-Circuit Rule for version 5
Rule category: Electrical
Rule classification: Binary
Summary
This rule tests for short circuits between primitive objects on the copper (signal and plane) layers. A short circuit exists when two objects that have different net names touch.
Constraints
Default constraints for the Short-Circuit rule.
- Allow Short Circuit - defines whether the target nets falling under the two scopes (full queries) of the rule can be short-circuited or not. If you require two different nets to be shorted together, for example when connecting two ground systems within a design, ensure that this option is enabled.
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 expressions match the objects being checked.
Rule Application
Online DRC, Batch DRC, and during autorouting.
Note
In a Printed Electronics design when different nets cross over on different layers, they are flagged as a short circuit. These cross-overs are isolated by placing a dielectric patch on a non-conductive layer.