In this paper, the real time characteristics analyzing system is proposed to analyze characteristics of inverter. The system is consisted of DSP unit and personal computer. Conventionally, power conversion system is designed by the load and the use. And control characteristics for the designed power conversion system is evaluated by the control input. In order to study of control methods, power conversion system is required for a study of control methods and observed system is required for a analyzing of the inverter. Inverter system is consisted to evaluate for proposed real time characteristics analyzing system. And induction motor is driven by control input that is manufactured by personal computer. Output of inverter and control characteristics is variously analyzed.