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In the Clearance rules shown above, the units are set to mils and the default clearance is set at 10mils (except for Holes). It then expanded it to show sub-categories, and clicked “Clearance” to show the Clearance Rule. In the example below, I clicked the white triangle next to the first category called “Electrical”. You should see a new window appear with a column on the left side sorted into categories.Ĭategories with a white triangle next to them mean there is more info inside them. We are going to review some of those settings and suggest a few changes to them.įrom the Main Menu, choose Design > Rules, or from the keyboard type “DR” If you create a New Project using the “ template, and then Add New PCB to the project, a blank PCB will be created with some default settings already assigned. If rules are changed midstream, Altium’s sophisticated Design Rule Checker can highlight violations based on the revised rules, and report them in an organized format for review and editing. The Altium Designer environment is controlled by rules, which are created using a powerful tool called the “PCB Rules and Constraints Editor”.īy creating rules before component placement and routing starts, Altium can warn you or prevent you from making mistakes, depending on how your preferences are set.