RE: comparing IBIS model simulation and measurements

Hi,

1) simulated slewrate: 2ns (20-80%)
2) measured slewrate: 6ns
3) scope: Tektronix TDS680B, probe: Tektronix P6245

Thanks,
Betty

> -----Original Message-----
> From: Daniel Nilsson [mailto:Daniel.Nilsson@compaq.com]
> Sent: Monday, November 27, 2000 4:57 PM
> To: Betty Luk
> Cc: 'ibis-users@eda.org'
> Subject: Re: comparing IBIS model simulation and measurements
>
>
> Hi,
>
> In order to help you with this I need more information:
>
> What is the slewrate you are simulating ?
> What is the slewrate you are measuring ?
> What measurement equipment are you using, scope model and
> probe model ?
>
>
> Regards
> Daniel Nilsson
>
> Betty Luk wrote:
> >
> > Hi,
> >
> > I've created an IBIS model, and I'm using it with HyperLynx
> BoardSim.
> > These results correlate well with Spice simulations, which
> leads me to
> > believe that the IBIS model was created correctly from the Spice
> > model. On the net that I'm simulating, I'm using some Samsung IBIS
> > models, and some passive components.
> >
> > Now I'm trying to compare the HyperLynx simulation with
> measurements.
> > I'm noticing that my simulation has a significantly faster slew rate
> > than my measurements. I've checked my scope probe, and they should
> > have negligible effect on my measurements. Is this most likely a
> > deficiency with my original Spice model?
> >
> > I would appreciate any feedback!
> >
> > Thanks,
> > Betty Luk
> >
>
 
Received on Mon Nov 27 14:25:24 2000