User`s manual

1-16
IM 701610-01E
Sequential Store <Section 7.3>
In the real-time sampling mode, waveform data will be stored in the acquisition memory
only a set number of times, and all waveforms can be displayed. This stops
automatically after acquisition. The maximum acquisition count available with the feature
varies depending on the record length.
The range for the DL1620/DL1640 is 2 to 4000 times (for the DL1640L, it is 2 to 16000
times).
Once the specified number of waveforms have been stored, you can display any of the
waveforms individually or all of them together, so that it is possible to derive a time series
of the waveform variation. The drawings below illustrate how stored data can be
displayed (assuming sequential storage of 100 waveforms).
Display Example in Case Count = 100 Times
Displaying All Waveforms
(ALL)
Displaying Newest Waveform
(Selected Record No. = 0)
Displaying Oldest Waveform
(Selected Record No. = –99)
Sampling Mode <Section 7.5>
As explained earlier in “Relationship between the time axis setting and sampling mode”
(section 1.2), data sampling can be performed either in real-time or in repetitive sampling
mode depending on the time axis and record length. The available time axis range
under repetitive mode varies according to the acquisition settings. For details, see
Appendix 1.
Accumulated Waveform Display <Section 8.6>
This mode holds each waveform on the screen for a time that is longer than the update
cycle, so that multiple waveforms are overlapped. The waveform age can be identified
by color.
The following two modes are available.
• Persist: Overlaps the display of waveforms using the display color of each channel.
The intensity is gradually reduced, and the waveform disappears after the
specified time.
• Color: Overlaps the display of waveforms using 8 colors which signify the
frequency of occurrence of the data values.
This function is useful when you want to observe jitters and temporary turbulence in
waveforms.
1.4 Setting the Acquisition and Display Conditions