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Waveform analysis
R&S
®
MXO 5 Series
170User Manual 1802.3369.02 ─ 02
Remote command:
CALCulate:MATH<m>:VERTical:OFFSet on page 528
Unit
Sets a user-defined unit for the math operation.
8.3 History
The history accesses the data of previous acquisitions and provides them for further
analysis.
8.3.1 About history
If a continuous acquisition runs, the captured data is stored in the sample memory and
the current acquisition is processed and shown on the display. After the acquisition is
stopped, the history accesses the captured samples that were stored, displays these
samples as history waveforms, and makes them available for further analysis. It con-
siders all channels that were enabled during the running acquisition.
When a new acquisition is started with [Single], the memory is cleared and written
anew. In continuous acquisition, stopping and starting the acquisition does not clear
the memory, and the history memory is continued. When the memory is full, new
acquisitions are stored, and the oldest are removed (first in, first out). The history mem-
ory is cleared when the acquisition parameters are changed. To clear the history mem-
ory on demand, use the [Clear] key or the "Clear" tool on the toolbar.
t
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History
memory at
time = t
5
-3
-2
-1 0
t
1
t
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t
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t
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4 waveforms acquired 4 history waveforms
Total memory 10 history waveforms
Discarded
earlier
waveforms
t
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12 waveforms acquired 10 history waveforms
History
memory at
time = t
13
-3
-2
-1 0
-6
-5
-4
-9
-8
-7
Figure 8-1: History memory. In this example, the memory can store 10 waveforms.
The number of stored history waveforms depends on the memory size, the number of
enabled channels, and the record length. The shorter the record length, the less the
number of channels, and the larger the memory, the more history waveforms are
saved.
History
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