METHOD AND DEVICES FOR DETECTING ELECTROMAGNETIC INTERFERENCE ON DATA TRANSMISSION LINES

摘要

A method for remotely detecting electromagnetic interference on a data transmission line of a communication network, in particular for electromagnetic interference caused by a power supply unit located at a client site, said power supply unit comprising a switching converter, comprising: - measuring at a client site a noise power spectrum on said data transmission line as a function of frequency, for a predetermined frequency range, said noise being present when said data transmission line is not carrying a data signal; - forwarding said measured noise power spectrum to a remote computing means at a network operator's site; - determining periodicities in said measured power spectrum by said remote computing means; - determining the switching frequency of said power supply unit by said remote computing means, based on periodicities in said power spectrum; and remote computing means. The method is based on REIN: Repetitive Electrical Impulse Noise Detection.