User guide

The Mask Run Control aligns the mask, switches it on, starts displaying the number
of waveforms, and the number of mask violations per mask region, and the worst
BER per Mask region.
Exit stops the computation, hides the mask, and the violations.
Automated Eye Parameter Measurement
Table 31
S.No Parameter Description
1 Rise time Measures the mean
transition-time taken by
the data on the rising edge
of the eye diagram. The
data crosses three
thresholds: lower,
crossover point, upper and
the eye transition.
Note: Rise time is
dependent on the
Transition Time of the
View Tab. The two options
are 10/90 and 20/80.
2 Fall time Measures the mean
transition-time taken by
the data on the falling edge
of the eye diagram. The
data crosses three
thresholds: lower,
crossover point, upper and
the eye transition.
Note: Fall time is
dependent on the
Transition Time of the
View Tab. The two options
are 10/90 and 20/80.
3 Sample Count The number of points
measured for the eye
diagram. If persistence,
‘infinite’, is enabled, the
value will gradually
increase.
Advanced Analysis 6
Agilent J-BERT N4903B High-Performance Serial BERT 337
Automated Eye Parameter
Measurement