hi Dhiman Kakati
that’s to say those parameters are defaulted in optisystem, so i don’t need.but,in the 2D graph of the report window,the value of eye opening factor vs Q factor is zero after simulation running. and other penalty items are also zero,so i think whether i can set a reference value（self-defined) to them for making them isn’t zero,and whether the penalty reference value is concluded from back-to-back system.thanks a lot and attenched my simulation model.oh my model isn’t permitted mainly because the software version is 2007,i’m sorry to that.
with regards
mengchao