Waveform Analysis
R&S
®
RTM3000
117
User Manual 1335.9090.02 ─ 08
the displayed waveform and also the data of the waveforms that have been captured
before. Each stored waveform is called a segment. The record length of the segments
can be defined. The number of segments depends on the record length. The shorter
the record length, the more segments can be saved.
t
3
t
4
t
5
t
6
t
7
t
8
t
9
t
10
t
11
t
12
t
1
t
2
Segmented
memory at
time = t
5
-3
-2
-1
0
t
1
t
2
t
3
t
4
4 waveforms acquired 4 segments
Total memory 10 segments
Discarded
earlier
waveforms
t
13
t
5
12 waveforms acquired 10 segments
Segmented
memory at
time = t
13
-3
-2
-1
0
-6
-5
-4
-9
-8
-7
Figure 6-9: Segmented memory. In this example, the memory can store 10 segments.
Each segment has a timestamp time to identify when the events took place.
The history can access the stored segments and display them. When you start a new
acquisition, the memory is cleared and the segments are written anew.
The history stores the following data during acquisition:
●
All active analog channels.
●
All logic channels if at least one logic is active (with option R&S
RTM-B1).
●
Decoded bus data if the bus is active (with at least one serial protocol option, for
example, R&S
RTM-K1 or -K2).
Fast segmentation
During normal acquisitions, only a short time of the acquisition cycle is used for sam-
pling; processing and display take most of the time. The processing and display time is
blind time causing a gap in the recorded signal. Usual acquisitions can miss very short-
time and infrequent events occurring during the dead time.
To reduce the dead time and thus the probability of missed events, fast segmentation
is provided. Fast segmentation takes effect for [Single] acquisitions if "Nx
Single" > 1.
With fast segmentation, subsequent triggered acquisitions are captured very fast, with
hardly any dead time between the acquisitions. After the acquisition of all segments
has been completed, the data is processed and the latest waveform is displayed.
Using the history viewer, you can view and analyze all stored waveform segments.
History and Segmented Memory (Option R&S
RTM-K15)
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