receiver isolation measurement


i am using AD9371 eval board. i wanna to know how to measure the Receiver 1 isolation from Receiver 2 and same for transmitters and also Tx with Rx. i know there are values already mention in the datasheet of AD9371 but i wanna to measure them now as Rx1 impedance is shifted from 50 ohms to 26 ohms i wanna to see how this factor affect overall isolation

can you plz also explain the procedure how to measure the noise figure of AD9371. the noise Figure of AD9371 is not static and it changing with gain. online methods of noise figure measurement are mostly using amplifier as DUT. how to measure the the noise figure of a receiver.