R&S RTO6 - Page 1097

Jitter analysis and clock data recovery
R&S
®
RTO6
1097User Manual 1801.6687.02 ─ 05
Measurement Abbrevia-
tion
Description Resu
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Diagram
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Periodic jitter
(2)
PJ Caused by crosstalk from periodic signal sources to
the transmitter or transmission line.
It represents the harmonic portion of the overall time
interval error (TIE).
x x x x x
Deterministic
Dual-Dirac jitter
DJ (δ-δ) Industry standard approximation to the deterministic
jitter measurement, calculated by fitting a model of
two overlapping, equally large Gaussian distributions
to the observed TJ histogram. The calculated value
is the time dif
ference between the two distributions
center points.
x
Inter-Symbol
interference
ISI The time between the earliest and the latest signal
transition of a single transition type, i.e.rising and fall-
ing edges. The measurement result is the largest
value across all transition types.
x
Data-depend-
ent and peri-
odic jitter
(2)
DDJ + PJ Consist of the data-dependent and periodic jitter
DDJ+PJ is the same as deterministic jitter minus
other bounded uncorrelated jitter. In contrast to
deterministic jitter, DDJ+PJ offers track and spectrum
plots.
DDJ+PJ spectrum is a useful approximation of the
deterministic jitter spectrum for negligible small other
bounded uncorrelated jitter.
x x x x x
Other bounded
uncorrelated jit-
ter
(1)
(O)BUJ Composite impact of all unknown but deterministic
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
(1)
A
vailable, if (Other) bounded uncorrelated > "Enabled"
.
(2)
Available, if Periodic > "Enabled".
(3)
No results available, if "Transitions" is set to "Rising"/"Falling".
Advanced jitter and noise (option R&S RT
O6- K133/K134)