The standards demand and the measurement generates jitter with
sinusoidal distribution.
In terms of the Serial BERT, sinusoidal jitter (SJ) and periodic jitter (PJ)
with sinusoidal characteristic are used for the test (see also
N4903 Generates Jitter” on page 321
).
Whether SJ or PJ is used depends on the jitter frequency. SJ supports
wide amplitude variations up to some MHz. PJ supports narrow
amplitude variations over a wide frequency range. The measurement
switches automatically between the two sources.
The measurement cannot be executed if jitter generation is totally
disabled. SJ and PJ may be enabled or disabled.
N O T E
SJ and SSC (Spread Spectrum Clock, option J11) operate mutually exclusive. If you
run a Jitter Tolerance Measurement while SSC is active, only PJ, together with
200
+
ps delay line, will be used to perform the measurement.
If desired, you can add additional jitter of random, external, or bounded
uncorrelated origin to the automatically generated jitter.
When the measurement has finished, the jitter composition shown in
the
Jitter Setup
window is restored.
Target BER
The target bit error ratio must be specified.
7
Jitter Tolerance Tests
354
Agilent J-BERT N4903 High-Performance Serial BERT
Jitter Type
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...
