Jitter and eye contour at BER measurements after DFE

A test and measurement system comprising:

• an input port structured to receive an input signal via a channel suffering from inter-symbol interference (ISI);
• and
• a processor configured to:
• determine bit sequences encoded in the input signal;
• assign portions of the input signal into sets based on the corresponding bit sequences;
• apply a Decision Feedback Equalizer (DFE) to graphs for each set by employing a DFE slicer pattern corresponding to each set in order to obtain DFE adjusted graphs that accurately capture jitter suppression;
• and
• normalize and combine the DFE adjusted graphs;
• in which the processor is further configured to generate a histogram or a probability density function (PDF) for each set prior to applying the DFE, such that the DFE adjusted graphs include set histograms or PDFs for each set, and in which each set histogram or PDF is generated by convolving an averaged ISI pattern with uncorrelated jitter and uncorrelated noise measured for the set before the application of DFE.