device under test

Given the items: Signal generator, two ac/dc voltmeters and a shunt If the voltmeters could measure phase, how can you determine the reactance of the DUT

So, I found these models for Line Impedance Stabilization Network (LISN) in two different books. I want to simulate these two models in LTspice, but I don't know which side to connect the EUT and which side to connect the spectrum analyzer and ofcourse, where to connect the source? and how do I...