Apparatus, method, and computer program for obtaining a time-domain-reflection response-information

摘要

An apparatus for obtaining a time-domain-reflection response-information has a signal driver adapted to apply two pulses of different pulse lengths to a TDR port in order to excite a first TDR response signal corresponding to a first pulse and a second TDR response signal corresponding to a second pulse. The apparatus has a timing determinator adapted to provide a timing information on the basis of a first instance in time when the first TDR response signal crosses a threshold value and on the basis of a second instance in time when the second TDR response signal crosses the threshold value. The apparatus has a TDR response information calculator adapted to calculate an information about a TDR response on the basis of the timing information.