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115User Manual 1316.0827.02 ─ 06
4.4.1 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. The history accesses the
samples that were stored before the current acquisition, displays these samples as his-
tory waveforms, and makes them available for further analysis. It considers all channels
that were enabled during the running acquisition. When the acquisition was stopped and
a new acquisition is started with RUN CONT or RUN×SINGLE, the memory is cleared
and written anew.
You can work with history waveforms in the same way as with the waveform of the latest
acquisition: use zoom, cursor measurements, and automatic measurements, create math
waveforms, perform mask testing and so on. Saving the history data is also possible,
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.
The memory can be enhanced with optional memory extension: 50 MSa with RTO-B101
100 MSa with RTO-B102.
History and equivalent time sampling are mutually exclusive, waveforms acquired with
equivalent time sampling have no history.
Quick-access History dialog box
When you press the HISTORY key on the front panel or tap "Display" menu > "Show
history", the history mode is enabled and the quick-access "History" dialog box is dis-
played. This small 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 also disables the history mode.
4.4.2 Using History
You can access the history waveforms in two ways:
●
Display a particular acquisition.
●
Replay all or a part of the saved waveforms to track the signal run.
Furthermore, you can export history data to a file.
● "To open the history and get information" on page 116
● "To display a particular acquisition" on page 116
● "To replay history waveforms" on page 116
● "To exit the history" on page 117
History