Remote control commands
R&S
®
RTO6
2492
User Manual 1801.6687.02 ─ 05
24.22.2.2
Results
For remote operation, the component is indicated by the suffix
COMPonents<n>
.
Table 24-20: Advanced jitter components
Suffix
<n>
Component
Description/Result
Basic components
1
Symbol rate
Number of data symbols per second of the analyzed signal. It is equivalent
to the baud rate.
For binary signals, the signal rate is equal to the bit rate.
2
Symbol duration
The length of time to transfer one signal symbol. Equals the inverse value
of the symbol rate.
3
Event Count
Number of analyzed data transitions.
Jitter components (option R&S
RTO6-K133)
4
TJ@BER
The eye closure at the user-defined target BER.
5
RJ+(O)BUJ
Consists of any influence that cannot be predicted with model parameters.
Usually, this jitter component follows a Gaussian probability distribution.
Other Bounded Uncorrelated Jitter (OBUJ) is included here. OBUJ refers to
any jitter that is bounded, uncorrelated time interval error (TIE) distribution,
for example from unobserved data signals.
6
DJ (
δ
-
δ
)
Industry standard approximation to the deterministic jitter measurement,
calculated by fitting a model of two overlapping, equally large Gaussian dis-
tributions to the observed DJ histogram. The calculated value is the time
difference between the two distributions center points.
7
TJ
Measures the total Time Interval Error (TIE) of the input signal.
It is defined as the time between each transition of the input signal and its
corresponding reference clock transition.
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.
Jitter analysis and clock data recovery
