Original link: http://loonlog.com/2023/9/15/altium-designer-query-write/

When I usually use AD (Altium Designer) to design PCB, I often involve some settings such as line width, line spacing, via size, etc. I always use a basic rule setting. Sometimes the spacing setting is larger than the chip pins. spacing will make it impossible to route traces. At this time, the safety spacing is directly set to the minimum, and then changed back after drawing. I believe many people do this, but there will be many errors during the final DRC check. This Every time, you have to confirm the report one by one. Only when there are no problems can you dare to output the file to the processing plant. This does the trick, but it’s not perfect. Next, we started to study how to make the AD rule settings more perfect.

The perfect rule setting is of course the use of advanced rule settings. Advanced rule settings use Query statements to limit the scope of design rules in detail.

1.Write Query statement

In the PCB document interface, select the menu Design->Rules… to open the PCB Rules and Constraints Editor dialog box, and change Where The…

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