User`s guide

DCD + ISI vs. Edge
This view plots the DCD+ISI relative to the pattern. It gives information about how the DCD+ISI
component of jitter varies relative to bit position of the pattern. The information in the UI Distrib view is
over laid on the DCD+ISI information to show where in the pattern it occurred. This plot shows jitter
components that are correlated to the data and relates to the DCD+ISI number in the Summary view. A
zoomed in view of this plot will show three lines at each edge position and give an indication of the
average location of each edge as well as the pk-pk size of all measurements taken of each edge.
The x-axis shows average edge position relative to the pattern marker. The number of measurements
made per edge is set in menu titled DCD+ISI Samples.
The y-axis shows time, which is the average edge deviation from its ideal location calculated using the
measured bit rate.
© WAVECREST Corporation 2005 Section 4 - GigaView
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