What value of Er do I enter into the stack-up? the manufacturers' data give a range of values at different frequencies, I also note that he Frequency box is 'greyed' out in the stack-up editor.
Normally, just enry a value of Dk@1GHz for fr-4 type material and Hyperynx support Dybe Dielectric model.
My supplier only provide Dk@2GHz, how do I change the "Er frequency"?
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