Subject: | |
From: | |
Date: | Wed, 26 Feb 1997 19:31:40 -0800 |
Content-Type: | multipart/alternative |
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Mitch,
I'm not a design genius so take this question as a grain of salt.
But doesn't the shorter risetime mean your traveling (transmission line
theory) through quicker hence less crosstalk?
Help me tooo.
Groovy
Mitch Morey wrote:
>
> I'm very surprised I haven't gotten ONE response to this yet. With the
trouble
> with the IPC net going on, I'm guessing it might not have gotten out
to the
> general public.
>
> Anyone?
>
> ----- Begin Included Message -----
>
> HELP! The engineer I work with has some issues I am hoping someone
can
> enlighten me on.
>
> > I have been using Automata in the past but stopped becuase something
> > doesn't seem right about the results it gives. Maybe I am wrong but
> > shouldn't the crosstalk increase when the signal rise time increases
> > if all else is held constant?
>
> > When I use the Automata Engineering Tools for doing lateral
crosstalk
> > calculations the slower the rise time the larger the crosstalk
result
> > becomes. Just doesn't seem right to me. Again, maybe I'm wrong!
>
> Here is two calculations from Automata:
>
> Automata's Lateral Crosstalk Modeling
>
> You submitted the following name/value pairs:
>
> Er = 4.3
> h1 = 8
> h2 = 8
> t = 1 Oz
> w = 6
> sx = 6
> length = 2
> **** risetime = 1.9 ****
>
> The crosstalk = 24.9 mv/v
> ----
>
> Automata's Lateral Crosstalk Modeling
>
> You submitted the following name/value pairs:
>
> Er = 4.3
> h1 = 8
> h2 = 8
> t = 1 Oz
> w = 6
> sx = 6
> length = 2
> **** risetime = 3.1 ****
>
> The crosstalk = 31.9 mv/v
> ----
>
> Does this seem correct to you?
>
> Thanks in advance for any help.
>
> ----- End Included Message -----
>
>
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