Waveform analysis
R&S
®
RTO6
275
User Manual 1801.6687.02 ─ 05
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History
memory at
time = t
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-1
0
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4 waveforms acquired 4 history waveforms
Total memory 10 history waveforms
Discarded
earlier
waveforms
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12 waveforms acquired 10 history waveforms
History
memory at
time = t
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-3
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-1
0
-6
-5
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-9
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-7
Figure 7-5: History memory. In this example, the memory can store 10 waveforms.
You can work with history waveforms in the same way as with the waveform of the lat-
est acquisition: use zoom, cursor measurements, and automatic measurements, create
math waveforms, perform mask testing and so on. Saving the history data is also pos-
sible, either completely or a part of the data.
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.
Quick-access History dialog box
When you press the [History] key on the front panel or tap "Display" menu > "Show his-
tory", the history mode is enabled and the quick-access "History" dialog box is dis-
played. A running acquistion stops immediately.
The small quick-access "History" dialog box can remain visible on the screen during
history replay, so that the history can be replayed at any time by a simple tap on the
"Play" button. Closing the quick-access "History" dialog box, or starting a new acquisi-
tion disables the history mode.
History
