Patent ID: 9588039
Date: 2017-03-07
CPC Classifications: G01J,G01N

Claim:
1. A device for measuring a periodic signal comprising: a light source for generating an optical input signal directed at an object being measured from an electrical input signal generated by a driver device on the basis of a first clock pulse; an optical receiver for detecting and converting the signal received from the object being measured, the received signal corresponding to the optical input signal altered in terms of phase and amplitude, into an electrical measuring signal; a central control and measuring device designed to generate the first clock pulse for the driver device and to receive and to process the electrical measuring signal; and a voltage supply apparatus for supplying the driver device, wherein the central control and measuring device is designed to generate a second clock pulse for the voltage supply apparatus and to filter the electrical measuring signal on the basis of the first and/or second clock pulse, wherein the frequency of the second clock pulse is an even multiple of the frequency of the first clock pulse.