Re: [SI-LIST] : W element correlation with measured data

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From: [email protected]
Date: Tue Dec 14 1999 - 09:37:20 PST

I took the liberty of downloading the presentation file, converting to PDF,
and uploading back to the server. the PDF file size is under 1.2MB (same
name with pdf extention). Tarek, I hope you do not mind.
enjoy,

Mithkal Smadi, Ph.D. , Logic Technology & Qualification, IBM Global
Procurement
(512) 838--7686, Tie line 678-7686
Fax: (512) 823-9478, Tie Line 793-9478
MS 9224, 11400 Burnet Rd, Austin, TX 78758

Study, Learn, Teach

"Rick Brooks" <[email protected]>@silab.eng.sun.com on 12/14/99
10:35:37 AM

Please respond to [email protected]

Sent by: [email protected]

To: [email protected]
cc:
Subject: Re: [SI-LIST] : W element correlation with measured data

I for one would be interested in this presentation, however, this
particular powerpoint file (fiber_channel_analysis.ppt) is completely
unwieldy.
The download was as expected for a 10 meg file, but I never had the
patience to wait the estimated 30 minutes it would take to open in
powerpoint.
Maybe it's just my computer, or the fact that I'm using Powerpoint '97?

Does anyone have a pdf version of this presentation?

- Rick Brooks
Nortel Networks

At 11:50 AM 12/13/1999 -0800, you wrote:
>IMAPS presentation by Jim Foppiano has comprehensive comparison of
>measured time-domain waveforms and W-element simulations for a Gigabit
>transceiver design, including long cables and traces.
>
>A pointer to the presentation was posted on the SI list few months ago,
>I included a copy below. It is still available for download.
>
>Regards,
>Dmitri Kuznetsov
>The W-element Developer
>
>Re: [SI-LIST] : IMAPS Presentation on Simulating Fibre Channel Loss
>From: Tarek Ali - WGS Board Design Technology <[email protected]>
>
>Hi,
>
> If anyone needs to download the imaps presentation please access
>my freedrive account at http://www.freedrive.com.
>
> login: tarek
> password: tarek
>
> And you can download the ppt file from the imaps folder.
> Most email systems will not permit files above 5 Meg, and this
>file is 10 Meg.
>
> Thanks,
>
> Tarek Ali
>
>
>Bradley S Henson wrote:
>>
>> Hi Ron,
>>
>> I can only speak to the fact that the frequency dependent parameters are
now
>> included and look substantially more real. I have not stayed put in one
job long
>> enough to actually have my folks characterize this for me! We have some
work
>> going on now, but nothing as well designed as I'd specify. The results
will
>> likely not be sharable due to the funding source :( Again, I don't
think anyone
>> will miss this data much at all since it appears to me to be way too
superficial
>> and poorly designed from an experimental viewpoint.
>>
>> If I get a chance to compare 'W' elements to measured data I'll share
with the
>> list anything publishable. Unfortunately, I have nothing in the works
right
>> now...
>>
>> Brad Henson
>>
>>
>> Ron Miller <[email protected]> on 12/10/99 11:26:13 AM
>>
>> Hi Brad
>>
>> I am using HP ADS a frequency domain simulator with Impulse, a real time
>> convolution
>> to the time domain with time domain models mixed in. I started using
this
>> because of the
>> problem with spice not modeling frequency dependent losses properly for
some
>> cable losses.
>>
>> The ADS simulations matched the measured results very nicely. However,
the
>> problem
>> with ADS is that the simulations take a long time to run when converting
back to
>> the time
>> domain, so they are a bit slow and expecially when having large spice
circuits
>> driving and
>> receiving the signals.
>>
>> My question is, does the W element simulations closely match the
measured
>> results of
>> cable and long PCB traces?
>>
>> Thanks
>>
>> Ron Miller
>>
>
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