15-3
IM DLM4038-02EN
15.1 Displaying History Waveforms
Displaying a List of Timestamps (List)
Press the List soft key to display the following menu.
Triggered time
Jump to the record number whose data contains the triggers
with the most time between them.
Jump to the record number whose data contains the triggers
with the least time between them.
Jump to the oldest record number.
Jump to the latest record number.
The difference between the triggered time of the current
data and the data before it
List of timestamps
Note
Notes about Configuring the History Feature
• When the acquisition mode is set to Average and the sampling mode is set to Repetitive, you cannot use
the history feature.
• When the display is in roll-mode, you cannot use the history feature.
• If you stop waveform acquisition, the DLM4000 only displays waveforms that have been acquired
completely.
Notes about Recalling Data Using the History Feature
• Waveform acquisition stops when you display the History menu. You cannot display history waveforms
while waveform acquisition is in progress.
• You can start waveform acquisition when the History menu is displayed. However, you cannot change the
history feature settings while waveform acquisition is in progress.
• Thesettingsarerestrictedsothatthefollowingrelationshipisretained:Lastrecord(End)≤SelectNo.≤
First record (Start).
• When you load waveform data from the specified storage medium, history waveforms up to that point are
cleared. The loaded waveform data is placed in record number zero. If you load a file containing multiple
waveforms, the latest waveform is placed in zero, and earlier waveforms are placed in order to record
numbers –1, –2, and so on.
• Computation and automated measurement of waveform parameters are performed on the waveform
of the record number specified by Select No. You can analyze old data as long as you do not overwrite
the acquisition memory contents by restarting waveform acquisition. If Average is set to ON, analysis is
performed on the averaged waveform.
• History waveforms are cleared when you turn the power off.
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