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  3. How to set the spacing constaints for Diff pair to get DRC...

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How to set the spacing constaints for Diff pair to get DRC error if the spacing more than constraint value

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archive over 17 years ago

Is it possible to set the constraint for differential siganl spacing in allegro PCB design L for the below , we will get the DRC error only if the spacing is less than the constraint value if it goes more than that it will not show error. For example consider this problem below ( 20 differentia signal trace width=5mil , spacing bettewn pair = 10mil & spacing betweent Diff pair to dif pair= 20mil How to set the constaint dif pair to diff pair & how to get drc error if spacing goes to more than 5mil ) Regards, Girish


Originally posted in cdnusers.org by girish_mn
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  • archive
    archive over 17 years ago

    Allegro PCB Design L does not have any constraint for Diff Pairs. Diff pair constraints are a performance and above feature.
    Your only option is to set a grid route by hand and then fix the traces.

    Regards,
    BillZ
    EMA Design Automation


    Originally posted in cdnusers.org by BillZ_EMA
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  • archive
    archive over 17 years ago

    Allegro PCB Design L does not have any constraint for Diff Pairs. Diff pair constraints are a performance and above feature.
    Your only option is to set a grid route by hand and then fix the traces.

    Regards,
    BillZ
    EMA Design Automation


    Originally posted in cdnusers.org by BillZ_EMA
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