Patent ID: 8686779
Filing Date: 2014-04-01
Classification: G01R

Abstract:
1. An arrangement configured to measure a transfer function of a linear time-invariant system, the arrangement comprising: a test signal generator connected to an input of the system and configured to input a test signal for exciting of the linear time-invariant system; a buffer configured to store an instantaneous sample of a response signal at an output of the system; and a trigger unit configured to trigger the buffer to store and provide at an output of the buffer, in response to the test signal, at least one respective instantaneous value of the response signal, wherein the arrangement is further configured to generate a sequence of samples of discrete values of the response signal by iteratively exciting, at predetermined instances of time increasing by a predetermined duration, the linear time-invariant system with the test signal until enough samples have been taken to derive the transfer function and the trigger unit comprises: a delay unit, connected to the test signal generator, and configured to receive and delay the test signal by an adjustable delay, and supply the delayed test signal to the buffer, wherein the buffer is further configured such that the delayed test signal triggers the buffer to store the at least one respective instantaneous value of the response signal and provide the sample at an output of the buffer.