The receiver can work as AM or BPSK receiver. At each of the differential inputs we have a carrier and two sidebands. I have only a single ended probe so I have to measure each input separately. I have different criteria for sensitivity than S/N . Ok, calling it sensitivity can be confusing, lets say it is just an input voltage.
I am not quite sure how to add the sidebands. If I read from spectrum analyzer XdBµV (peak detector) , and then convert XdBµV to YµV, then YµV*0.707 to get AµVrms , than can I just add all of them Sens=sqrt(AµV^2+BµV^2+CµV^2+DµV^2) to get the result?