Altium Designer Documentation

Working with the Supply Nets Design Rule on a PCB in Altium Designer

Created: March 23, 2017 | Updated: September 26, 2019
All Contents

Rule categorySignal Integrity

Rule classification: Binary

Summary

This rule identifies a supply net and specifies its voltage (or set of nets using the net class scope).

All design rules are created and managed within the PCB Rules and Constraints Editor dialog. For a high-level view of working with the design rules system, see Constraining the Design - Design Rules. For detailed information regarding how to target the objects that you want a design rule to apply to, see Scoping Design Rules.

Constraints

Default constraints for the Supply Nets rule.Default constraints for the Supply Nets rule.

  • Voltage - the voltage value for the net(s) falling under the scope (full query) of the rule.

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

Batch DRC and during Signal Integrity analysis.

Tips

  1. The supply net(s) can be specified by choosing the Net or Net Class from the drop-down field in the Where The Object Matches region of the PCB Rules and Constraints Editor dialog, and then choosing the required net or net class from the corresponding secondary drop-down list. The corresponding Full Query for the rules' scope will be as follows: InNet('NetName') - for a single net; InNetClass('NetClassName') - for a net class.
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