HP 83480A User Manual

The Digital Communications
Analysis Menus
Measure Eye Menu
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Jitter
Jitter is a measurement of the variance in time locations of the crossing
points. Horizontal time histograms are constructed to determine the location
of the crossing points. An iterative process is used to narrow the histogram
window to precisely determine the crossing points and the variance. Jitter
can be displayed in one of two formats: peak-to-peak or RMS. Both values are
based on the standard deviation of the crossing point position.
Jitter RMS = 1  crossing
Jitter p-p
=6

crossing
Figure
6-9.
Jitter
measurement.
Key Path
4
Shift
54
Meas ey
e
5
N
NN
NNNNNNNNNNNNNNNNN
Jitter
NN
NNNNNNNNN
RMS or
N
NN
NNNNNNNN
p-p
6-39

HP 83480A Specifications

General

Brand	HP
Model	83480A
Category	Measuring Instruments
Language	English