Matthias,

If you plot the Gerbers with the option "plot holes" checked you will
rub out a 0 mil annular ring as well as a i.e. 0.001 mil (which
satisfies your DRC rule).
So never plot the holes in Gerbers!

Hope this helps,

Emanuel

[EMAIL PROTECTED] wrote:
> 
> Hi,
> 
> I have a problem with vias on a 6 layer board with a stack up like:
> 
> T
> --P--
> 1
> --C--
> 2
> --P--
> 3
> --C--
> 4
> --P--
> B
> 
> Among others a via type, from layer 1 to layer 4, witch is depending on the layer 
>stack, were used. But some of the vias were only connected on layer 1 and layer 3. 
>Our board manufacturer had problems with these ones, because these vias appeared 
>without the pad on layer 4 in the Gerber files. In other words, there was just a 
>metallized hole in the board. During the etching process these vias were destroyed. 
>All vias and tracks were manually placed and routed.
> In DRC runs with Minimal Anular Ring Rule set >0 no violation were found.
> 
> Does anyone out there know, how to fix this trouble or how to check the vias. Any 
>help would be welcome.
> Thanks in advance.
> 
> 
> Regards,
> 
> Matthias Trebeck
> 
> Infineon Technologies AG
> Automotive Industrial
> AI MC AC EMC
> 
> fon: +49 89 636 83244
> fax: +49 89 234 723831
> 
> mailto:[EMAIL PROTECTED]
> 
> **** VISIT US AT: http://www.infineon.com ****
> 
> Mit freundlichen Grüßen
> 
> Matthias Trebeck
> 
> Infineon Technologies AG
> Automotive Industrial
> AI MC AC EMC
> 
> fon: +49 89 636 83244
> fax: +49 89 234 723831
> 
> mailto:[EMAIL PROTECTED]
> 
> **** VISIT US AT: http://www.infineon.com ****
> 

-- 

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
MPL AG                      www.mpl.ch
Emanuel Zimmermann          [EMAIL PROTECTED]
Manager R&D                 Phone: +41 (0)56 483 34 34
Taefernstrasse 20           Fax:   +41 (0)56 493 30 20

CH-5405 Daettwil
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* To post a message: mailto:[EMAIL PROTECTED]
*
* To leave this list visit:
* http://www.techservinc.com/protelusers/leave.html
*
* Contact the list manager:
* mailto:[EMAIL PROTECTED]
*
* Forum Guidelines Rules:
* http://www.techservinc.com/protelusers/forumrules.html
*
* Browse or Search previous postings:
* http://www.mail-archive.com/proteledaforum@techservinc.com
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

Reply via email to