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147,948 Views 13 Replies Last post: Jul 4, 2011 2:35 AM by yu.yanfeng RSS
yu.yanfeng EDA JEDI 1,204 posts since
Jul 23, 2008
Currently Being Moderated

Nov 19, 2010 12:38 AM

EE7.9 Update3 output wrong Gencad File(Maybe 7.9.1 also have this severe bug)

It have been verified that EE2007.9 Update3 outputs wrong Gencad file, Bottom SMD pads be in the Top side. I guess 7.9.1 may also have this severe bug(I will check it late)
It seems that Mentor QA seldom do  full verification before release.  Taking a joke, EE means Endless Errors.

 

Yanfeng

jeff.heidel Active 71 posts since
Aug 25, 2008
Currently Being Moderated
Nov 22, 2010 6:54 AM in response to: yu.yanfeng
Re: EE7.9 Update3 output wrong Gencad File(Maybe 7.9.1 also have this severe bug)

Chris Smith from National Instruments called me last week and warned me about this issue.  Fortunately, my company isn't using GenCAD that much anymore.  I think he filed a bug report.  I will forward this thread to him and let him add anything new that he may have found.

chris.smith Active 59 posts since
Aug 25, 2008
Currently Being Moderated
Nov 22, 2010 11:15 AM in response to: yu.yanfeng
Re: EE7.9.1 Gencad Corrupt values for BTM pads.

We are writing a python script to correct this issue; essentially parsing the bad output and correcting the pad definitions.

It's troubling to have write scripts to "correct" a defect in a fundamental deliverable output. I hope that Mentor adds this to a QA checklist for the next release.

 

The output is unusable for our MFG and ICT Engineering teams.

 

As another warning we also saw problems with ODB++ output where mechanical cells had duplicate reference designators. NRD0, NRD0.
This causes Valor to crash. The only workaround is to delete the mech cells or add ASSY ref designators to the cells and force renumbers on the cells before ODB++ output.

 


Andreas.Schaefer Aficionado 204 posts since
Oct 7, 2008
Currently Being Moderated
Dec 6, 2010 12:13 AM in response to: yu.yanfeng
Re: EE7.9.1 Gencad Corrupt values for BTM pads.

Hello Yanfeng,

 

I doublechecked the issue an it is still in 7.9.1.

When looking into release notes, it says "dts0100632147 - Opposite side Pad in Padstack is doubly-opposed resulating in Mount side placement in GenCAD output".

 

Do you think, this fix is the root cuase? May be they have presented a bad fix for another issue?

 

kind regards,

Andreas

chris.smith Active 59 posts since
Aug 25, 2008
Currently Being Moderated
Feb 18, 2011 8:00 AM in response to: yu.yanfeng
Re: EE7.9.1 Gencad Corrupt values for BTM pads.

There is an option to reopen logs on supportnet (I thought?)

 

We tend to validate anything they marked as "corrected" also. There has been times where the testcase they used might be ok but other designs can have the same defect.
--When in doub't check it out.---

 

Email me Yanfeng if you need help in how we created an external solution to correct the defective output.

 

I would hope Mentor addresses this specific defect in the 7.9.2 release seeing that the deliverable output is completely worthless to MFG and ICT if they rely on Gencad.
Without the abillity of having our own Software Engineer and creating a solution outside of Mentor API; we would have been unable to use the new release.

 

Chris Smith

Application Support Analyst | PCB Services

National Instruments |www.ni.com

chris.smith@ni.com

Andreas.Schaefer Aficionado 204 posts since
Oct 7, 2008
Currently Being Moderated
Feb 20, 2011 11:49 PM in response to: yu.yanfeng
Re: EE7.9.1 Gencad Corrupt values for BTM pads.

Hi Yanfeng,

 

my customer support also asked me last week about this issue.

They said, the format was changed to help other customers with an import issue.

Obviously the format is not quite clear (engoineering said) and now they wanted to know, where I do an import,

to make their output valid for my import software.

 

You should reopen yiour DR and give a comment, where you want to import it.

An idea here:

Do you have Valor Enterprise? There is an licensed GenCad import possible there. Now Enterprise 3000 is vSure from Mentor ;-)

If your import is wrong there, they would have to fix it anyway, to get correct results in their own manufacturing suite.

 

kind regards,

Andreas

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