11 | Keysight | N4960A Serial BERT 17 and 32 Gb/s - Data Sheet
BER measurement results of each tested
sinusoidal jitter point can be displayed in
graphical format. A green colored dot on
the graph at right indicates the point at
which the receiver is passing, a red col-
ored X indicates a synchronization issue,
and the maroon colored + sign indicates
the point at which the BER threshold has
been exceeded.
The x-axis of the graph is PJ/SJ frequency
and the y-axis is PJ/SJ amplitude. The
compliance template is shown with a
dashed line. The minimum and maximum
bounds for the characterization test are
shown with a solid line.
The results can also be displayed in tabu-
lar format (Figure 17) and can be saved to
Figure 16. Jitter tolerance graph view.
a file for future analysis.
The jitter amplitude and frequency test
points are defined in a template file which
can be edited by simply pointing and click-
ing a mouse or entering the information in
the numeric fields (Figure 18).
Figure 17. Jitter tolerance table view.
Figure 18. Template file.
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