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February 1997

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Subject:
DES: Crosstalk calculations
From:
[log in to unmask] (Mitch Morey)
Date:
Wed, 26 Feb 1997 07:40:09 -0800
Content-Type:
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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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