Signal Integrity - Supply Nets

Created: March 23, 2017 | Updated: September 26, 2019 | Applies to versions: 18.0, 18.1, 19.0, 19.1, 20.0, 20.1 and 20.2

Now reading version 18.1. For the latest, read: Signal Integrity - Supply Nets for version 21

Rule category: Signal 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 Defining, Scoping & Managing PCB Design Rules.

Constraints

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.

Note

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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