Patent ID: 7460983

Claim:
A method of calibrating a signal path of a signal analysis system comprising the steps of: acquiring sets of samples in the time domain of a signal under test from a device under test via the signal path including a plurality of selectable impedance loads with the signal path for each set of samples having a selected impedance load of the plurality of selectable impedance loads; converting the sets of samples of the signal under test in the time domain to a spectral domain representations; characterizing transfer parameters of the device under test within a spectral domain from the spectral domain representations of the sets of samples; computing an equalization filter from the characterized transfer parameters and the spectral domain representation of one of the sets of samples with the equalization filter adapted to compensate for loading of the device under test caused by measurement of the device under test and transmission errors in the system; converting the computed equalization filter from the frequency domain to a time domain equalization filter; acquiring at least an additional set of samples in the time domain of the signal under test from the device under test via the signal path including the selectable impedance load of the set of samples used for computing the equalization filter; and processing the additional set of samples using the time domain equalization filter to effect thereby a reduction in signal error attributable to the measurement loading of the device under test and transmission errors in the system.