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11-3
IM 701210-06E
Waveform Analysis/Search
11
Explanation
The acquisition memory retains waveform data of the last specified number of triggers.
If a trigger is activated beyond the number of triggers that can be held, the oldest
waveform data is cleared.
Selected Record No.
The selectable range is 0 to –(the number of retained waveforms – 1). The default value
is 0. The newest (current) waveform is 0, the waveform previous to that is –1, and so on.
The number of triggers that can be held varies depending on the selected record length.
For details, see appendix 2.
If the trigger count is 1, only the displayed waveform is held in the acquisition memory;
waveform data in the past are not held.
Display Mode
• Display Only the Selected Waveform: One
Select the waveform to be displayed using Select Record in the range specified by
Start Record and End Record.
• Display All Waveforms in the Selected Range: All
The waveform data specified by Start Record and End Record are displayed
accumulated. The waveform data selected by Select Record is displayed brightly.
• Average Display: Ave
The waveform data specified by Start Record and End Record are displayed
averaged.
Show Map (A List of Time Stamps)
You can list the number of the waveform data stored in the acquisition memory and the
time at acquisition end. One screen displays 75 data points of information. You can
scroll through the data by using the jog shuttle.
Clearing the History Memory
• Clears all the waveforms in the acquisition memory.
• Cleared waveforms cannot be recovered.
Notes When Setting the History Memory Function
• You cannot use the history memory function when the dual capture function is used or
when realtime recording is in progress.
• You cannot use the history memory function, if the acquisition mode is Average.
• If you abort the waveform acquisition, the triggered waveform is displayed as a valid
waveform.
• History records are not lost when waveform acquisition is stopped and then restarted,
provided that acquisition conditions remain unchanged.
• If you change the acquisition settings, history memory is cleared when you restart
acquisition using the new settings.
For details on the waveform acquisition conditions, see section 7.1, “Starting/Stopping
Waveform Acquisition.”
• Average display is not possible on the following waveforms.
• Waveforms when the record length is greater than equal to 1 MW on the standard
model, 2.5 MW on the M1 option model, 5 MW on the M2 option model, or 10 MW
on the M3 option model.
11.1 Displaying History Waveforms