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Creating a ground plane

autodeskguest

I have finished creating the board layout except all the GND wires.

What I want is that all the free place on the board will be part of the GND

ground plane.

How should I do that?

 

Harry

 

 

Parents

  • On 01/21/2010 10:39 AM, Jim Littlefield wrote:

    Harry H. Arends wrote:

    "Morten Leikvoll" <mleikvol@yahoo.nospam> schreef in bericht

    news:hj9ial$81r$1@cheetah.cadsoft.de...

     

    Next problem, I have text on the bottom where the ground plane should

    come.

    How can I create a clear rectangle around that text. If I create a

    poly around the board the text is still there but completely enclosed.

     

    It depends on what layer you put the text in and how your CAM job

    outputs.    If the layer that the text is in is output as part of the

    bottom silkscreen then it will not interfere w/ the pour since the

    silkscreen will be printed on top of the metalization.

     

    If you are trying to put text into the same layer as the ground pour

    then the letters in the text will automatically be isolated from the

    plane just like vias, pads, etc.

     

    If you want a nice rectangle around the text, you can draw draw a

    rectangle on the bRestrict layer that encloses the area occupied by the

    text to prevent the copper pour from filling that area.  This will

    produce DRC errors since the text itself is within the bRestrict area.

    Once these errors are marked as approved DRC will not bother you again.

     

    Enjoy,

        - Chuck

     

Reply

  • On 01/21/2010 10:39 AM, Jim Littlefield wrote:

    Harry H. Arends wrote:

    "Morten Leikvoll" <mleikvol@yahoo.nospam> schreef in bericht

    news:hj9ial$81r$1@cheetah.cadsoft.de...

     

    Next problem, I have text on the bottom where the ground plane should

    come.

    How can I create a clear rectangle around that text. If I create a

    poly around the board the text is still there but completely enclosed.

     

    It depends on what layer you put the text in and how your CAM job

    outputs.    If the layer that the text is in is output as part of the

    bottom silkscreen then it will not interfere w/ the pour since the

    silkscreen will be printed on top of the metalization.

     

    If you are trying to put text into the same layer as the ground pour

    then the letters in the text will automatically be isolated from the

    plane just like vias, pads, etc.

     

    If you want a nice rectangle around the text, you can draw draw a

    rectangle on the bRestrict layer that encloses the area occupied by the

    text to prevent the copper pour from filling that area.  This will

    produce DRC errors since the text itself is within the bRestrict area.

    Once these errors are marked as approved DRC will not bother you again.

     

    Enjoy,

        - Chuck

     

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