Uncertainty analysis of non-coherent sampling phase meter with four parameter sine wave fitting by means of Monte Carlo

Uncertainty analysis of a very simple sampling phase meter based on four parameter sine wave fitting is presented in this paper. An uncertainty of a sample time and a measured voltage is assigned to every sampled point and a total uncertainty of a phase difference is calculated by means of the Monte Carlo method. Results show the total uncertainty is lower than 0.5 millidegree for selected digitizer. A noise of the measured signal or the digitizer is the largest contribution to the total uncertainty.