Thanks, redwire. That cleared up some things for me. The paper steve referenced suggested "Trapezoid traces are specified by setting the trapezoidal_angle_in_degrees variable in the "Signal Analysis" category of the User Preferences dialog. I used "74" as suggested in SourceLink solution 11064512." I had looked, but didn't have trapezoidal_angle_in_degrees. Now I understand that that is "Etch Factor." I guess Saturn must assume some etch factor... This is my first time trying to use the calculation for a differential pair; can you please explain what you mean by "loosely coupled?" When is it good enough to just look at the single ended impedance?![]()
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