Remote control commands
R&S
®
RTP
2269User Manual 1337.9952.02 ─ 12
Suffix
<n>
Component Description/Result
8 DJ The reproducible portion of the overall TIE of the input signal.
It consists of the Data Dependent Jitter (DDJ) and Periodic Jitter (PJ) com-
ponents.
9 DDJ Consists of Inter-symbol Interference (ISI) and Duty Cycle Distortion
(DCD).
It depends on the symbol sequence. ISI is an effect commonly caused by
limited signal bandwidth in the transmitter and transmission line, which
forces influence from past symbols onto future symbols. DCD is a mis-
match between rising and falling signal transitions due to reference level
mismatch or other imbalances between transitions.
10 DCD Measure of imbalance between rising and falling data transitions. It is
defined as the time difference between the average rising and average fall-
ing edge.
11 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).
12 ISI The time between the earliest and the latest signal transition of a single
transition type, i.e.rising and falling edges. The measurement result is the
largest value across all transition types.
13 DDJ +PJ 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.
14 (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.
15 (O)BUJ (δ-δ) Other bounded uncorrelated Dual-Dirac jitter (O)BUJ (δ- δ) is an industry
standard approximation to the other bounded uncorrelated jitter measure-
ment. It is calculated by fitting a model of two overlapping, equally large
Gaussian distributions to the observed RJ+(O)BUJ histogram. The calcula-
ted value is the amplitude difference between the two distributions center
points.
16 RJ Consists of any influence that cannot be predicted with model parameters.
Usually, this jitter component follows a Gaussian probability distribution.
The algorithm computes the standard deviation and the peak-peak value of
the TIE caused by RJ within the analyzed waveform.
Noise components (Option R&S RTP-K134)
17 EH@BER Returns the vertical eye opening at the user-defined BER.
18 RN+(O)BUN Random noise plus (other) bounded uncorrelated noise or (other) bounded
uncorrelated noise is the combined effect of both noise types.
If periodic components are activated RN + OBUN are displayed, otherwise
RN + BUN.
RN + (O)BUN is typically used, if track or spectrum plots are desired. Both
plots are not available for RN only or (O)BUN only components as the time
dependencies of these noise types are unknown. RN + (O)BUN spectrum
is a useful approximation of the RN spectrum for negligible small (O)BUN.
Jitter analysis and clock data recovery
To Next Page
Loading...
