Re: Wanted: CAT 5 cable simulator
From: John Woodgate (jmw_at_jmwa.demon.contraspam.yuk)
Date: 08/13/04
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Date: Fri, 13 Aug 2004 07:06:19 +0100
I read in sci.electronics.design that Allan Herriman <allan.herriman.hat
es.spam@ctam.com.au.invalid> wrote (in <84foh0plo59gtukcmll5gi4h5087cji0
7b@4ax.com>) about 'Wanted: CAT 5 cable simulator', on Fri, 13 Aug 2004:
>The number of sections needed in the simulator is proportional to the
>length multiplied by the bandwidth. In this case, it is a LARGE number
>(I calculate about 500 sections x 4 pairs => 18000 components, if we
>model the frequency dependence of G and R giving 9 components per
>section), so cable drums are a better idea.
Well, you choose to maximize the complication. The number of components
needed depends on the accuracy of simulation required.
-- Regards, John Woodgate, OOO - Own Opinions Only. The good news is that nothing is compulsory. The bad news is that everything is prohibited. http://www.jmwa.demon.co.uk Also see http://www.isce.org.uk
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