Abstract: In a circuit arrangement for analyzing a clocked signal reflected from an object, particularly an optical signal, wherein at least one radiation emitter which, for providing the clocked signal, is connected to a clocking signal generator, and at least one radiation receiver which receives radiation pulses emitted by the radiation emitter and reflected from the object, and a comparator by which the output signal pulses of the radiation are compared with reference pulses whose amplitudes depend on output signals of the comparator, are provided, the reference signal pulses occur concurrently with the radiation impulses received by the radiation receiver and the impulses received by the radiation receiver are compensated for each by a respective internal reference impulse before their analysis in the circuit arrangement.