Hi Jawad,
when you import the data from optisystm, you will have a two colons on is time and the second is values. But if you see the time is repeated to each trace so to plot the eye diagram correctly in matlab you have to plot the curve the same number of traces using the data.
just to check idea use excel and plot the curve in scattering format so you will see the same eye diagram figure.
hope that answer your question.
thanks
Mohamed Abouseif
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