Design Rules Available for PCB Layout in Altium NEXUS

Created: September 20, 2021 | Updated: September 21, 2021 | Applies to version: 4

Now reading version 4. For the latest, read: Design Rules Available for PCB Layout in Altium NEXUS for version 5

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This documentation page references Altium NEXUS/NEXUS Client (part of the deployed NEXUS solution), which has been discontinued. All your PCB design, data management and collaboration needs can now be delivered by Altium Designer and a connected Altium 365 Workspace. Check out the FAQs page for more information.

Your Altium Design Software's PCB Editor uses the concept of Design Rules to define the requirements of a design. These rules collectively form an 'instruction set' for the PCB Editor to follow. They cover every aspect of the design - from routing widths, clearances, plane connection styles, routing via styles, and so on - and many of the rules can be monitored in real-time by the online Design Rule Checker (DRC).

Design rules target specific objects and are applied in a hierarchical fashion. Multiple rules of the same type can be set up. It may arise that a design object is covered by more than one rule with the same scope. In this instance, a contention exists. All contentions are resolved by a priority setting. The system goes through the rules from highest to lowest priority and picks the first one whose scope(s) match the object(s) being checked.

With a well-defined set of design rules, you can successfully complete board designs with varying and often stringent design requirements. And as the PCB Editor is rules-driven, taking the time to set up the rules at the outset of the design will enable you to effectively get on with the job of designing, safe in the knowledge that the rules system is working hard to ensure that success.

Define your rules in the PCB Rules And Constraints Editor dialog, accessed by choosing the Design » Rules command from the main menus.

For a detailed overview of the rules system in Altium NEXUS, see Constraining the Design - Design Rules. For an overview of the system used to verify adherence to defined rules, see Design Rule Checking.

The Design Rules are divided into separate categories to make it easier to locate and configure your desired rules (s). The categories and their specific rules are listed below.

Electrical Rules

Routing Rules

SMT Rules

Mask Rules

Plane Rules

Testpoint Rules

Manufacturing Rules

High Speed Rules

Placement Rules

Signal Integrity Rules

Druckversion

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