Patent ID: 8612177

Claim:
A method for determining measurement uncertainty of measured values of a network analyser having a nonlinearity, comprising: calculating, for every measured value of a respectively-selected measurement type, the measurement uncertainty in an internal computer of the network analyser according to modulus and/or phase; displaying the calculated measurement uncertainty together with the respective measured value, storing in databanks allocated to the internal computer data required for calculating the measurement uncertainty, said data resulting directly from properties and an operating mode of the network analyzer and directly accessible to the internal computer, and entering externally into the databanks only data from additionally-used measurement resources, which differ from the data already stored in the databanks, where they are set off against the originally-stored data and included as new data in the calculation of the measurement uncertainty; wherein the method for the measurement-uncertainty analysis influences the measurement of non-linear devices in order to determine the dynamic influence of stimulus fluctuations in a device under test, wherein external measurement-resource data, which are to be entered additionally for the various, most-current measurement resources, are listed in a databank of the network analyser, from which they can be selected according to a frequency range for superposing statistical measurement uncertainties on the calculated measurement uncertainty; and wherein the nonlinearity of the analyser is added to the statistical measurement uncertainties.