[SI-LIST] Re: Question regarding current loop, clarification

Doug, do you mean you wish to observe at the receiver?   That is fine 
with me.

Or are you trying to imply that there is some line stabilization 
going on for a sufficiently wide bit interval?

If we are talking transmission lines here, we should be able to use 
either a termination resistor, or an infinitely long section of 
transmission line beyond our observation point.  In either case, the 
idea is that there are no reflections from the far end.  The wave 
front simply advances from the transmitter launch and goes on its 
happy little way.

Regards,


Steve.


At 01:27 PM 4/24/2006, Doug Brooks wrote:
>I believe we needed one more assumption.
>Assume that the point on the waveform we are interested in has reached the
>far end of the trace(s) (i.e. at the receiver).
>
>Sorry
>
>Doug
>
>
>
>At 12:36 PM 4/24/2006, Doug Brooks wrote:
> >Assume we have a differential pair, driven in odd mode with no 
> timing offsets.
> >Assume the pair is terminated with a single resistor between the two traces.
> >Assume the signal is purely trapezoidal.
> >Assume there is an underlying plane (but assume what you want about the
> >spacing to the plane.)
> >Assume what you want about the spacing between the traces.
> >*If* current flows in a closed loop and *if* current is constant everywhere
> >in the loop, and *if* current is a point (as opposed to an average) concept
> >in time....
> >
> >What is the definition of the current loop at the instant when the current
> >wave form is at the middle of the constant part of the wave form (between
> >the rise and fall times)?
> >
> >Doug Brooks
> >
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