Abstract: The proposed method of testing objects for random actions thereon consists of recording random actions to which an object is subjected in the course of operation, determining the characteristics of said random actions, reproducing said random actions as a stimulating random pulse process which is a train of pulses of different shapes of a selected combination of pulse shapes, forming statistically independent random parameters of pulses, analyzing the characteristics of the random actions being reproduced and the response of the object to these random actions, and correcting the characteristics of the simulating random pulse process by varying its probability characteristics. The proposed digital simulator-computer system comprises a control computer hooked via an interface unit to main and auxiliary forward and feedback channels, and a test bed connected via first and second distribution devices, respectively, to the main and auxiliary forward channels and the main and auxiliary feedback channels.