Jitter analysis and clock data recovery
R&S
®
RTO6
1102User Manual 1801.6687.02 ─ 05
Measurement Abbrevia-
tion
Description Resu
lts
Diagram
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p
/a
b
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H
is
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Inter-symbol inter-
ference noise
ISIN The level difference between the highest and the
lowest level error of a symbol, i.e. one or
zero.The largest value across all symbols is the
measurement result.
x
Data-dependent
noise and periodic
noise
(2)
DDN+PN Data-dependent noise plus periodic noise is the
combined ef
fect of both jitter types.
Note that DDN+PN equals deterministic noise
minus other bounded uncorrelated noise.
DDN+PN spectrum is a useful approximation of
the deterministic noise spectrum fot negligible
small other bounded uncorrelated noise.
x
x x x x
Other bounded
uncorrelated noise
(1)
(O)BUN Composite impact of all unknown but determinis-
tic portions of the overall time interval error of the
input signal. It consists of any disturbance that
comes from a deterministic source but cannot be
reproduced from the input signal. Often it is
caused by crosstalk from other data signals.
x x x
Other bounded
uncorrelated Dual-
Dirac noise
(1)
(O)BUN (δ-
δ)
Other bounded uncorrelated Dual-Dirac noise
(O)BUN (δ- δ) is an industry standard approxima-
tion to the other bounded uncorrelated jitter mea-
surement. It is calculated by fitting a model of two
overlapping, equally large Gaussian distributions
to the observed RN+(O)BUN histogram. The cal-
culated value is the amplitude difference between
the two distributions center points.
x
Random noise
(1)
RN Consists of any influence that cannot be predicted
with model parameters. Usually
, this noise com-
ponent follows a Gaussian probability distribution.
The algorithm computes the standard deviation
and the peak-peak value of the level error (LE)
caused by RN within the analyzed waveform.
x
x
(1)
A
vailable, if
(Other) bounded uncorrelated > "Enabled".
(2)
Available, if Periodic > "Enabled".
(3)
No results available, if "Levels" is set to "Rising"/"Falling".
Remote command:
ADVJitter<m>:DCOMposition:
COMPonents<n>:ENABle on page 2495
Select all /Clear
Selects/clears all components in the noise dialog.
Advanced jitter and noise (option R&S R
T
O6- K133/K134)
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