Dear all, I have created .spec file and using n2port to do the PSS simulation. However, it could not simulate. Is the s-parameter data could not simulate in PSS? I make sure that the format of the .spec file is correct. I have tried to simulate the s-parameter. It is workable. However, as I simulate in PSS, the error is appeared and could not simulate. Therefore, how could I simulate it in PSS simulation? Thanks Charles CHENG