MCM’s Power Source Analyzer is used for testing the phase rotation, E & F circuit continuity and the supply voltage at the end of the aircraft cable (connector). The flat bottom design and top mounted receptacle of the power analyzer allows for the device to be placed on the ramp for ease of connector insertion. The handles are used as foot treads to secure the analyzer while extracting the connector. Lights and test points are recessed for protection and increased visibility. An E & F feedback circuit is utilized allowing the gate box or converter contactor to close. The test points are used to check the phase voltage, phase rotation and total supply voltage.