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Fab Drawing Issue

Computrol

I'm trying to produce the artwork for the design that I'm working on and having a minor issue.  I'm generating the Fab Drawing that shows all the drill holes and sizes on the Ncdrill_Figure layer, but this layer does not come through in the artwork.  If I select the Nclegend_1-4 it only shows the vias and through-hole parts that are loaded on the top side.  Is there a way to get all of them to show up in the artwork?

 Thanks!

 

James

  • mcatramb91

    Just to clarify.  The Film Record for your Fabrication Drawing looks fine in Allegro but when you generate an Artwork of the Fabrication Drawing Film Record it does not show everything in the Gerber.  Is this correct?

    I just want to be sure I know extactly what your problem is and also what Release of Allegro are you using.

    Thanks,
    Michael Catrambone
    UTStarcom, Inc

  • redwire

     I could not understand the orginal question but if your clarification is correct, it sounds like a photoplot outline is set such that it chops off the drill legend?

  • Computrol
    That is correct.  I updated to the most current revision of OrCAD PCB Editor and it fixed the problem that I was having.

    Thanks,

    James
  • archive

      Hi All,

    I am also facing the same issue. I use Allegro 16.0. After a first level investigation, I found that the drill symbols of all the through hole components placed in the bottom side of the PCB(mirrored components) are appearing in the NCdrill_figure subclass. Even if we add it in the film setup for crating an artwork including the "NCdrill_figure" subclass, the symbols will not be present in the final generated artwork. I had also tried to draw some lines in the "NCdrill_figure"subclass to checkwhether it is ignoring the entire subclass whilecreating the artwork. But, surprisingly, the lines I added manually to "NCdrill_figure"subclass appears in the art work.

    That is, only the drill symbols present in the "NCdrill_figure" subcalss is not getting 'exported' to the final artwork. I have no clue how to solve this. I think this is a problem with the tool itself. Allegro 15.7 doesn't have this problem because all the drill symbols are coming in the "NCdrill_figure"subclass only.

    NB: There is another post about this subject in the forum at     

    http://www.cadence.com/Community/forums/p/12652/18249.aspx

    http://www.cadence.com/Community/forums/p/12013/16100.aspx#16100

  • archive

    Hi all,

    I think I have a solutin for this problem.


    For 16.0 users please try the following steps (Steps below assume a 10-layer PCB).
     
    1.    Go to Setup>Subclasses
    2.    Add a new subclass “NCLEGEND-10-1” under the “MANUFACTURING” class
    3.    Make the “NCLEGEND-10-1” subclass visible
    4.    Update the drill chart from “Manufacture>NC>Drill Legend”. The drill figures of mirrored TH components will appear in this subclass.
    5.    In the film setup add the “NCLEGEND-10-1” subclass along with“NCLEGEND-1-10” subclass under the ‘FAB_DWG’ film

    These steps solved the problem for me. Hope this will work for others  also.

    Regards,

    Babu

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