FIELD: physics.
SUBSTANCE: device has an input and an output terminal for connecting the measuring object, a harmonic generator, signal level equalisation unit consisting of series-connected attenuator and controlled measuring amplifier, a differentiating unit, a control-measurement unit consisting of an oscilloscope and a measuring unit, as well as identical first and second display units consisting of a comparator circuit, a reference signal generator, a display, wherein the input of the first display unit is connected to the output of the signal level equalisation unit, and the input of the second display unit is connected to the output of the differentiating unit, two switches which shunt the differentiating unit and a repeated differentiation unit, which is identical to the differentiating unit and is connected between the output of the differentiating unit and the inputs of the control-measurement unit and the second display unit. Capacitors in the differentiating units are variable.
EFFECT: broader functional capabilities of the device and the set of determined harmonic distortion coefficients.
1 dwg
