ABSTRACT: This demonstration features a vector-receiver harmonic load-pull system, with couplers placed at the DUT input and output to capture a- and b-waves at both fundamental and harmonic frequencies. The NT-8G-65G-1C source tuner controls impedance conditions at the DUT input, while the NT-8G-67G-3C load tuner provides fundamental and harmonic impedance control at the DUT output. With this configuration, users can conduct advanced load-pull characterization under controlled source and load impedance conditions.