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 Post subject: Gerber not recognized by old software of PCB house.
PostPosted: 16 Aug 2017, 03:23 

Joined: 16 Aug 2017, 03:03
Posts: 1

It seems that there is not enough documentation on how the Gerber RS-274X dialog box functions. For example, what does "Enable G54" means?

The problem we have is that after we generated the Gerber and checked with a Gerber viewer such as GC-Prevue, everything seemed okay. But when we send the Gerber to the PCB house, they made a PCB with a square pad rotated by 45 degree, and it shorted to the surrounding ground plane. After checking with them, they were using a very old Genesis v92b software. After discussing with them, they recommend that we modify the way we generate the Gerber file. But it seems like DipTrace does all the generation automatically.

After checking the ASCII Gerber file, it was found that the rotated pad was drawn as a square, but then it was defined in the Gerber as %ADD124OUTLINE3*%. and %AMOUTLINE3*5,1,4,0,0,2.47487,-45.0*%. The problem is that why a square pad generates into an outline? And I cannot even find from the Ucamco document how this outline statement works at all. So why the Gerber generator generates such an exotic aperture with a simple square pad? Is there a way to avoid it?

Obviously, the problem is the outdated software of the PCB house. But they have a large customer based and it will be next to impossible for them to upgrade the software just for us. Therefore, we have to be able to generate what is most compatible for them.

 Post subject: Re: Gerber not recognized by old software of PCB house.
PostPosted: 21 Aug 2017, 11:20 
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Joined: 08 Nov 2011, 07:48
Posts: 18
Location: Ottawa, Ontario
Convert the square pad to a rectangle. Don't use a polygon.... that old crappy software that some of the Chinese fabs will work fine with the Diptrace gerber if the pad is defined as a rectangle.

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