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Connecting solid and crosshatched shapes

Jason T

Hello,

Is there a standard way to connect a solid shape to a crosshatched shape (with both shapes being dynamic) in OrCAD PCB Designer?

background:

I'm using OrCAD PCB Designer Professional 17.4 for a rigid-flex design. I am crosshatching the ground across the flex zone, but I want the ground in the rigid area to be a solid shape. I use dynamic shapes in both cases and am currently just overlapping the shapes a little. If I merge them then they become all-solid or all-crosshatched. A lot of DRC errors are reported where the shapes meet due to same net to same net shape spacing and minimum connection angle violations. I would prefer not to waive all of these DRC errors. One option is to leave a gap and manually route some traces between the shapes but I don't like that approach.

I'm also curious why the tool does not flag DRC errors along the edge of the dynamic crosshatch shape since the intersection of the diagonal lines and the perimeter line creates many acute angles.

Thanks - Jason

Parents
  • excellon1
    +1

    Jason, you don't have to use the "Same Net Checking". This particular DRC rule I can honestly say I have never found a use for. 

    If you want to disable it or see the choices available go to Setup > Constraints > Modes. On your cross hatch and solid shapes you cant go with a merge as while they are
    dynamic the result will be a all or nothing type of thing due to the actual fill type. Overlap does work good though if needed.

Reply
  • excellon1
    +1

    Jason, you don't have to use the "Same Net Checking". This particular DRC rule I can honestly say I have never found a use for. 

    If you want to disable it or see the choices available go to Setup > Constraints > Modes. On your cross hatch and solid shapes you cant go with a merge as while they are
    dynamic the result will be a all or nothing type of thing due to the actual fill type. Overlap does work good though if needed.

Children
  • Jason T
    0 in reply to excellon1

    Ok thank you. I will just waive the DRC errors for acute angles at the overlap boundary. Seems like there would be a more elegant way of doing this.

  • excellon1
    0 in reply to Jason T

    Hi Jason,

    I don't see any drc errors here when overlapping shapes of the same net. What is the specific DRC error that needs to be waived.

    Note: There should never be DRC errors that need to be waived.

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