An impedance tuner is used to present controlled impedances to a device under test (DUT). When used on the output of a DUT, the set of measurements is commonly referred to as load pull. When used on the input of a DUT, the set of measurements is commonly referred to as source pull. By varying the impedance, it is possible to fully characterize the performance of a DUT. A demonstration at MAPCON 2024 highlights the capabilities of the MTUNE3 tuner calibration and control software, facilitating fundamental, harmonic, non-harmonically related multi-frequency, and frequency-interpolated impedance tuning.