E2681A Datasheet, PDF (2/15 Pages) Keysight Technologies – EZJIT Plus Jitter Analysis Software

02 | Keysight | EZJIT Plus Jitter Analysis Software for Infiniium Oscilloscopes – Data Sheet
With the faster edge speeds and shrinking data valid windows in today’s high-speed
digital designs, insight into the causes of signal jitter is critical for ensuring the reliability
of your design. Keysight Technologies, Inc. EZJIT Plus jitter analysis software for
Infiniium oscilloscopes provides the advanced decomposition, analysis, and views of
jitter necessary for fast and accurate insight into your signal. Decompose jitter into
components, view BER bathtub curves and estimate TJ at low BER. Whether your signal
is subject to channel ISI, power supply interference, or crosstalk from adjacent signal
paths, EZJIT Plus enables you to accurately estimate TJ and determine the sources of
jitter affecting your signal.
Easy to Use Rj/Dj Separation Wizard
Your jitter separation experience begins with the EZJIT Plus Rj/DJ jitter separation
wizard. The easy-to-use wizard makes setting up jitter separation fast and easy. Walk
through the step-bystep wizard to set critical parameters such as thresholds, vertical
scaling, clock recovery, noise removal, and clock recovery. When you are finished with
the wizard, you get fast and accurate separation of jitter.
Separate jitter on both periodic and
non-periodic (arbitrary) waveforms
One of the advantages of a real time oscilloscope over other jitter analysis engines is the
ability to separate jitter on arbitrary patterns, including long periodic patterns such as
PRBS23 and PRBS31. Typically, jitter separation is performed on repetitive waveforms
that are designed to stress the data transmission link and receivers clock recovery
circuitry. However, many embedded designs using multi-vendor chipsets are limited to
testing live traffic with additional align characters and packet frames that may not be
repetitive. EZJIT Plus allows designers to choose between periodic and arbitrary data
modes when analyzing jitter for compliance. In the arbitrary data mode, the ISI filter
shows victim-aggressor relationships between each rising and falling edge that are
N-edges apart in the captured waveform. By setting the filter wide enough to capture
all significant relationships, designers can quickly analyze ISI problems and accurately
separate RJ/DJ parameters to provide a TJ estimation at low BER.
Figure 1. The ISI filter makes it possible to determine DCD in arbitrary patterns.