Patent ID: 6832172
Filing Date: 2004-12-14
Classification: G01R

Abstract:
A method for decomposing Total Jitter of a data signal into its component parts of Deterministic Jitter and Random Jitter for measurement of said Deterministic Jitter and Random Jitter, comprising the steps of:measuring Total Jitter; performing Spectral Separation of Deterministic Jitter and Random Jitter; performing further spectral separation of Deterministic Jitter into Periodic Jitter and its components Duty Cycle Jitter, and ISI; performing an inverse FFT on spectrum impulses of said Deterministic Jitter and its components to obtain a histogram of said Deterministic jitter and histograms of its components; performing further separation of Duty Cycle and ISI components using separate histograms or statistics for positive and negative edges; measuring Peak-Peak statistics on all Deterministic Jitter components; using Random Jitter spectral power to estimate true Random Jitter distribution; convolving the estimated Random Jitter distribution with a Histogram of Deterministic Jitter-only data to form a histogram of said convolution; and using said histogram of said convolution to generate a bathtub error curve to estimate bit error rate.