Random vibration tester

The random vibration tester of the invention comprises a noise generator (1) whose output is connected, via a means (10) for correction of the amplitude-frequency response of a vibrator (9) in order to provide a level frequency response, to parallel- connected channels (2) for shaping a signal with a preset spectrum the outputs of said channels being connected to the respective inputs of summer (7). The means (10) for correction of the vibrator amplitude- frequency response comprises a loading element (11) and two circulators (12, 13). The first terminal of the circulator (12) is connected to the output of the noise generator (1), the second terminal of said circulator is connected, via the loading element (11), to the input of the vibrator (9), while its third terminal is connected to a zero-potential bar. The first terminal of the circulator (13) is connected, via the loading element (11), to the second terminal of the circulator (12) and directly to the input of the vibrator (9), the second terminal of said circulator is connected to the inputs of the channels (2) for shaping a preset spectrum signal, and the third terminal is connected to the output of the summer (7). figure 1.