User guide

8
Jitter Tolerance Tests
Jitter Tolerance Tests - Concepts
N O T E
This chapter refers only to Serial BERT instruments on which the calibrated and
integrated jitter injection option J10 is installed.
A jitter tolerance measurement is used to determine the ability of a device or
system to maintain communication quality in the presence of jitter. It comes in two
varieties:
• Jitter Tolerance Characterization determines the jitter levels where the device
under test can no longer maintain a desired bit error ratio (BER).
• Jitter Tolerance Compliance verifies that the device under test is able to
maintain a BER level at pre-defined jitter levels and jitter frequencies, as defined
by a standard.
The basic setup of a jitter tolerance test is illustrated below:
Understanding Jitter Tolerance
The behavior and the passed/failed classification of data receiving devices or
circuits are determined by their ability to withstand
• Jitter
Agilent J-BERT N4903B High-Performance Serial BERT
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