As the push for advanced shipboard power systems leads to incorporation of power-electronics based converter systems, system integration concepts that preserve stability has become a major research thrust. To this end, low voltage and power impedance measurement units (IMU) have been developed that allow determine salient input and output impedance characteristics of the deployed components, including the converters. The measures impedance characteristics support determining the stability related system properties. This project report details approaches and results of testing the first medium voltage, megawatt-power level IMU. The IMU was developed by the Center for Power Electronics Systems (CPES) at Virginia Tech, and tested in a relevant system environment at the Center for Advanced Power Systems (CAPS) at Florida State University.