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How to set clreance design rule between two net classes

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  • How to set clreance design rule between two net classes

    Hi all,

    I need create clearance design rule for checking in our pcb project.

    I have two net class A and B
    I want to set clearances for these net classes with anything not in the class is 120mil. please help me how to set this rule in Altium Designer.

    Thanks all,
    Last edited by syhaunguyen; 02-16-2016, 02:54 AM.

  • #2
    Hi syhaunguyen,

    If I understood correctly, you want a minimum clearance of 120mil between objects in net class A and all other objects, and minimum clearance of 120mil between objects of net class B and all other objects.

    If that is the case, here is how to set up such rule with custom queries:
    Click image for larger version

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    I am using Altium Designer 16, it might look a bit different with older versions.

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    • #3
      Good day to you mairomaster it's OK now. Thanks you so much.

      Once more Q, How to disable check on no-net pad? Picture attach.


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      • #4
        The best practice in my opinion is to put a No-DRC directive to all unconnected pads in your schematics. That also ensures you will not randomly forget to connect a pin and prevents errors/warning during the schematic compilation as well. After placing the directives don't forget to re-compile the project and import the changes to the PCB.

        Here is how to place the directives:
        Click image for larger version

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        • #5
          Thank mairomaster great to know that.

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