Spectral Jitter
Spectral Jitter - Concepts
The Spectral Jitter measurement allows you to analyze the jitter
inherent in the output signals of your device under test (DUT) as a
function of the frequency. This measurement can be used for
investigating the behavior of the DUT, for example to identify crosstalk
effects.
Spectral Jitter Analysis
The Spectral Jitter measurement provides a method for investigating
the spectrum of the jitter, that means, its power distribution over
frequency.
Deterministic jitter can be caused by repetitive data patterns. It can also
be caused by internal or external periodic effects.
The Spectral Jitter measurement detects even small periodic
components that may be hidden in a high level of random noise. It
informs you about the frequencies of such components and measures
their contribution to the total jitter.
This helps to identify jitter sources and to reduce or eliminate their
influence.
Prerequisites for Using the Spectral Jitter Measurement
It is important that the initial sampling point is in optimum position
(which means, in the middle of the eye opening), because the Spectral
Jitter measurement derives its starting sampling point from that point.
“General Requirements” on page 160
.
How the Spectral Jitter Measurement Works
The Spectral Jitter measurement performs a capture and compare
operation in the jitter region. The number of compared and captured
bits is adjustable.
By default, the analyzer sampling point is set to an offset of -0.5 analyzer
clock periods or unit intervals (UI) from the optimum sampling delay.
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Advanced Analysis
278
Agilent J-BERT N4903 High-Performance Serial BERT
Summary of Contents for J-BERT N4903
Page 1: ...S Agilent J BERT N4903 High Performance Serial BERT User Guide s Agilent Technologies...
Page 68: ...2 Setting up Patterns 68 Agilent J BERT N4903 High Performance Serial BERT...
Page 158: ...4 Setting up the Error Detector 158 Agilent J BERT N4903 High Performance Serial BERT...
Page 314: ...6 Evaluating Results 314 Agilent J BERT N4903 High Performance Serial BERT...
Page 374: ...7 Jitter Tolerance Tests 374 Agilent J BERT N4903 High Performance Serial BERT...
Page 394: ...8 Solving Problems 394 Agilent J BERT N4903 High Performance Serial BERT...
Page 434: ...Index 434 Agilent J BERT N4903 High Performance Serial BERT...
