Thanks Michael,
It looks obvious that since d and s are in a ratio with
each other, their magnitudes don't matter as long as
their units are the same (ft/ft, inches/inches), but which
standard are the units based - inches, mils, millimeters...?
I assume since it's dealing with wire it's mils?
Michael Royer wrote:
>
> Reply to: RE>UTP - Unshielded Twisted Pair
>
> Twisted pair equations
>
> d = diameter or wire
> s = separation of wires centers
> er= effective relative dielectric constant of medium between wires
>
> Z = {120/(er^.5)}*ln(2*s/d)
>
> Michael Royer
************************************************************
-------------------------------------------------------
The comments and opinions stated herein are mine alone,
and do not reflect those of my employer.
-------------------------------------------------------
************************************************************
