Abstract: Device for digitally slaving the position of a moving part, including: a digital sensor (20) which is intended to measure the actual position of the moving part (10) and delivers a digital effective position value, drive means comprising an electric motor (30) for driving the moving part into a setpoint position defined by a digital setpoint value, a digital control unit (50) delivering at least one signal for controlling a circuit (40) for supplying the motor as a function of the discrepancy between the said setpoint value and the said actual value, in which the digital sensor having a determined measuring interval, the motor supply circuit comprises timer means for maintaining the supply to the motor for the time which is necessary and sufficient for the sensor to be positioned at the middle of the interval corresponding to the setpoint value.

Abstract: The invention relates to an attenuator device for a rectangular waveguide, in which a plunger (10) is rotated about an eccentric axis (12) so that it penetrates into the guide (1) through a longitudinal slot (19) to an insertion height (h) which is a function of its angular position.