11-4
IM 701310-01E
Replay
Displays waveforms in order from the specified waveform to the oldest or the latest
waveform.
A List of Timestamps
• You can display a list of acquired waveform data numbers and their corresponding
trigger timestamps.
• One screen displays up to 75 data values. You can scroll through the list using the
rotary knob.
Clearing the History Memory
• Clears all the waveforms in the acquisition memory.
• You cannot recover waveforms that have been cleared.
• Notes about Setting the History Memory Function
• In Averaging, Roll Mode, or Repetitive Sampling mode, the DL9000 acquires
signals at the display update interval.
• In Averaging or Repetitive Sampling mode when the trigger mode is Single, the
DL9000 acquires multiple signals while it completes one waveform. Only the
completed waveform is saved to the history memory.
• If you stop waveform acquisition, the DL9000 will only display waveforms that have
been acquired in their entirety.
• If the trigger mode is not Single and you start waveform acquisition after changing
the waveform acquisition conditions, data that is in the history memory before you
changed the conditions will be cleared.
For details on the signal acquisition conditions, see section 4.7.
• Notes about Recalling Data Using the History Memory Function
• If you display the history memory menu, signal acquisition will stop. The DL9000
cannot display history waveforms while signal acquisition is in progress.
• You can start signal acquisition even when the history memory menu is displayed.
However, you cannot change the history memory settings while signal acquisition is
in progress.
• The record number that you can select is limited by the start and end record
numbers.
• If you load measurement data from the specified storage medium, the history
waveforms will be cleared. The loaded measurement data is always placed in
history memory record number zero. If you load a measurement data file containing
multiple waveforms, the latest waveform is loaded in record number zero, the next
latest waveform in record number –1, and so on.
• Computation and automated measurement of waveform parameters are carried
out on the waveform that corresponds to the selected record number. You can
analyze old data as long as you don’t restart acquisition and overwrite the contents
in the history memory. Analysis can be performed on the averaged waveform when
average display is enabled.
• The history waveforms will clear if you turn the power OFF.
11.1 Displaying History Waveforms
