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 DRC errors with Copper pour 

Last post Thu, Aug 23 2007 4:40 AM by archive. 6 replies.
Started by archive 23 Aug 2007 04:40 AM. Topic has 6 replies and 885 views
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  • Thu, Aug 23 2007 4:40 AM

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    DRC errors with Copper pour Reply

    Hi Everybody,

    I am facing some problem with the copper pour in the outer layers. I have done Fan out for SMT components (small trace with via). The GND via will be connected to the inner layer plane.
    When i flood the GND copper in the outer layer, i am getting somany "line to via" spacing DRC errors. I could able to clear these erros by touching the trace.

    But if i want to modify the outer layer copper shape at any small corner, the same number of DRC errors are repeating.
    I have attached PDF snap shot of the same error.

    I request your expertise and need solution.

    Thanks in advance.
    Sriram


    Originally posted in cdnusers.org by sriramssr
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  • Thu, Aug 23 2007 4:45 AM

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    RE: DRC errors with Copper pour Reply

    Switch OFF the same net DRC.

    Regards,
    Kishore


    Originally posted in cdnusers.org by kishore
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  • Thu, Aug 23 2007 4:47 AM

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    RE: DRC errors with Copper pour Reply

    you can try picking up the copper (move) and put it down without moving it (ix 0). and / or run dbdoctor.

    also, i wouldn't worry too much about these drc's until your about done with the board.


    Originally posted in cdnusers.org by KenM
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  • Thu, Aug 23 2007 4:54 AM

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    RE: DRC errors with Copper pour Reply

    If there are too many copper shapes on the layer, then pickingup each shape and incrementing with "0" would be cumbersome. I would rather suggest you to turn the Same net DRC "OFF".

    Regards,
    Kishore


    Originally posted in cdnusers.org by kishore
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  • Thu, Aug 23 2007 6:39 AM

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    RE: DRC errors with Copper pour Reply

    I made same net DRC in OFF condition. But still i found few errors. I tried with the move copper by ix 0, but no use.

    Some how i removed all DRCs, i have moved one via. Strange! i got so many errors.


    Originally posted in cdnusers.org by sriramssr
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  • Thu, Aug 23 2007 7:46 AM

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    RE: DRC errors with Copper pour Reply

    Go to the Global Dynamic Shape Parameters, and on the Clearances tab set the Oversize value to 0.2. This will eliminate those errors.
    Regards,
    Harold


    Originally posted in cdnusers.org by Hpattie
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  • Thu, Aug 23 2007 8:03 AM

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    RE: DRC errors with Copper pour Reply

    Anytime you have a Cline routed inside of a shape it will break up into individual Cline segments at every vertex. What is actually occuring in your example is the Cline is not exactly going straight into the Via and there is a Cline jog undernearth or very near the edge of the via pad which clearance is being checked to because the Cline is being broken into individual segments.

    Turning off Same Net DRC is a good option to eliminate the DRCs but you may eliminate DRCs that you would want to see.


    Originally posted in cdnusers.org by mcatramb91
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Started by archive at 23 Aug 2007 04:40 AM. Topic has 6 replies.