[SI-LIST] Re: AW: IBIS-AMI Simulation produces split eye diagram

what was that?
Here's what I tried to say.

To follow up with Todd's post, when you look at the impulse response, if 
there is a relatively larger pulse towards the right side of the plot, 
then you may be experiencing time domain aliasing of the frequency 
domain data. This can be due to two potential sources: Insufficient 
frequency domain sampling in the tool or insufficient frequency domain 
sampling in the S-parameters.

If the problem is just the tool you are using, you only have to increase 
frequency domain resolution settings. If the problem is with the 
S-parameters you are using, you will need to regenerate the s-parameters 
at a smaller frequency step size. If you did not generate the 
S-parameters yourself, then you can ask the model vendor to provide a 
new model with a larger number of sample points, or you can use a 
compact rational model fit to create a continuous function that can be 
resampled and simulated at a higher sample rate.

Good luck

Scott

Scott McMorrow
Grand Poobah
Teraspeed Consulting Group LLC
121 North River Drive
Narragansett, RI 02882
(401) 284-1827 Business
(401) 284-1840 Fax

http://www.teraspeed.com

Teraspeed® is the registered service mark of
Teraspeed Consulting Group LLC


On 1/5/2011 9:12 AM, Scott McMorrow wrote:
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