FIELD: control and measuring equipment. SUBSTANCE: method involves improving control of a connector in case of its repeated intermediate malfunction by applying a test action of electric harmonic vibrations within a frequency range of 0.10-300 mHz. The selected connector control parameter is resonance frequencies of the amplitude-frequency characteristic within an amplitude range from 0.1-0.2 to 0.8-0.9 U where U input voltage of the test action in the frequency amplitude from 0.04 0.05 to 285-295 mHZ The selected informative parameters are the presence of subharmonic vibrations or pulsations of closed and open connectors testifying to a malfunction while the reference values are subharmonic vibrations or pulsations at the output of a reference electric connector within the preset amplitude and frequency ranges. EFFECT: higher efficiency and improved control of connectors. 9 cl, 13 dwg
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