Altium NEXUS Documentation

PCB Editor - DRC Violations Display

Modified by Susan Riege on Feb 27, 2018

Parent page: PCB Preferences


The PCB Editor - DRC Violations Display page of the Preferences dialog

Summary

The PCB Editor - DRC Violations Display page of the Preferences dialog provides a range of controls that determine the visual functionality of the DRC Violations Display feature within the PCB workspace.

Access

The PCB Editor - DRC Violations Display page of the Preferences dialog is accessed by clicking DRC Violations Display under the PCB Editor folder in the main Preferences dialog (accessed by clicking the  button in the top right corner of the workspace).

Options/Controls

Violation Overlay Style 

Select the visual overlay style to specify how violations appear in the PCB workspace. Choose from the following options:

  • None (Layer Color) - the DRC override color is ignored, leaving the default layer color visible only.
  • Solid (Override Color) - the DRC override color is used, totally overriding the default layer color.
  • Style A - the DRC override color is used in the display of an exclamation-type pattern, leaving the default layer color also visible.
  • Style B - the DRC override color is used in the display of a cross-type pattern, leaving the default layer color also visible.
The override color (the color associated with the display of a violation overlay) is as defined for the DRC Error Markers under System Colors on the View Configuration panel.

Overlay Zoom Out Behavior 

Use these options to determine how the overlays are displayed when you zoom out:

  • Base Pattern Scales - select to scale the base pattern as you zoom out.
  • Layer Color Dominates - select to have the assigned layer color become more dominant the further you zoom out until the color is not noticeable.
  • Override Color Dominates - select to have the assigned net override color become more dominant the further you zoom out until the color is not noticeable.

Choose DRC Violations Display Style

This region presents a grid allowing you to choose the display style used on a per-rule basis.

  • Enabling the Violation Details field for a rule type will use the associated custom violation graphics to display the DRC violations of that rule.
  • Enabling the Violation Overlay field will display the violations using the specified overlay style.

Right-click anywhere in the region to access a context menu, with commands to quickly enable or disable use of a violation display type for all rule types. You can also quickly enable the display of violations – detailed graphics or overlay styles – for only those rules currently being used in the design.

By default, the Violation Details display option is enabled for all rule types and the Violation Overlay display option is enabled only for Clearance, Width, and Component Clearance rules.
Using the two display types together can prove useful in terms of providing a 'coarse' and 'fine' indication of violations. When zoomed out, the violation overlay can flag where a violation exists, then zoom in to view the detail delivered by the associated custom violation graphic.
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