what is everyone using to do controlled impedance calculations..

i have looked at polaris's product, but i am guessing it's gonna be expensive..

i am currently setting up a spreadsheet in excel, after playing the the
formulas in mathematica...

i am just using the formulas i found in ipc-2221.. and have not done much
fiddling with anything yet..

awaiting a set of test coupons to see how close i am...

thanks in advance...

____
Sergio T. Ruiz
Sales and MIS
Philway Products, Inc.
(419) 281-7777 x228

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