Checks for Routing Constraints

The Routing Constraint Manager constraint checker lets you check constraints on routed nets. Some of the checks performed by the constraint checker are:

Shield Checks

• Perform shielding checks for the following topologies: parallel, tandem, and coaxial.
• Flag shielded nets forwhich the ratio of existing shields to ideal shields exceeds the specified tolerance.
• Flag shielded nets with the following errors. The errors reported with markers are:
  • Shield wires that violate minWidth
  • Regions where shielding is not placed at exactly gap spacing
  • Tandem shields that violate tandemWidth
  • Regions where the shielding is missing
  • Shield wires that violate valid shield and number of via shield cuts
    • Need to check if validLayers applies to the layers that are shielded, or the layers on which shields can be built
  • Nets shielded with the wrong net are considered unshielded.
  • No markers are generated if the ratio falls below the tolerance

Related Topics

Checking Routing Constraints

Routing Constraint Manager User Interface

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