I hope this helps.
Vice Chair EIA-IBIS Open Forum
> Valid point! I am an IBIS consumer too. And I'm getting tired of
> messy, incomplete, and blatantly wrong IBIS files. I do the same as
> you. I run ibis_chk and then look at each VI and VT curve with
> ibisplot. About 90% of the files I receive require some fixing on my
> side. It appears that many people are creating IBIS files with very
> little understanding of the specification. Just because s2ibis ran
> without errors does not guarantee a good IBIS file! I think the best
> we can do right now is to tell the suppliers about the errors that we
> find in their files. Most of them want to learn how to do it right,
> and will gladly accept suggestions when presented tactfully.
> Here are some of the flags I look for:
> s2ibis 0.91BETA (!!! WARNING !!!)
> no Vmeas, Cref, Rref, or Vref
> clamp curves left in pullup and pulldown (s2ibis)
> pullup and pulldown curves not crossing 0,0
> 2 significant digits (s2ibis) causing stairstep curves
> I don't want to take away from the massive amount of work done in
> developing s2ibis. It can be a great tool if you know how to use it.
> Don't just run it without understanding what it does. I changed some
> things I didn't like in the code and use it internally when I have
> spice models.
> I was saying just yesterday that we need an ibis_fix program to look
> for the common errors and try to fix them. EDUCATION is the only real
> Weston Beal
> > Thank you in advance for your response.
> > Best Regards,
> > Abe Riazi
> > SI Engineer
> > Anigma, Inc.
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