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Hole symbols from mirrored symbol pins not showing on Fab Layer Gerber

LANCEK
Hello fellow PCBers:

I’m having a problem manufacturing my Fab-Layer artwork in v16.0. When I view the Fab-Layer in Orcad, all the holes are shown with their correct symbols. After manufacturing the artwork, only the holes of parts that are on the Top Layer are shown on the Gerber File.

I have updated their individual PAD files and Symbol files, updated the symbols on the board, updated the Drill Legend and NC-Drilled a dozen times, gone to drill customization verified that the holes are defined as I thought and "validated" (not that I know what validate does).

NCLEGEND-1-2 (it’s a 2-Layer board) is in the Manufacture>Artwork>FabLayer film definition, so I have no clue how to fix this problem.

When I view only the Fab Layer in Orcad and turn on Symbol Pin in Super Filter, I can "select" the hole-symbols of parts that are on the top layer, but the program does not appear to recognize the hole-symbols that are on the bottom layer.

There has to be some basic thing I have set up incorrectly, because this seems like a fairly simple task that I'm trying to accomplish!

Thanks for any help!
-Lance

  •   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/10715/11705.aspx#11705

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

  • 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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