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13-23
IM 701210-06E
Saving and Loading Data
13
Data Size
The following table shows the data size when the record length is set to 100 kW,
waveform data of CH1 to CH4 are saved, all Math channels are turned OFF, and using
history waveform 1 condition.
Data Type
Extension
Data Size (Bytes)
Binary
.WVF
Approx. 800 K ((100 kW + 32)
×
4 channels
×
the number of
history waveforms
×
2)
.HDR
Approx. 2 K (approx. 3 K when Math1 and Math2 are ON)
ASCII
.CSV
4 to 5 MW
Float
.FLD
Approx. 1.6 M ((100 kW + 32)
×
4
×
the number of history
waveforms
×
4)
Waveform to Be Saved: Trace
• You can save all the waveforms or the specified waveforms from CH1 to CH16, DSP1
to DSP6 (optional), Math waveforms, logic waveforms, and event waveforms.
• The setup parameters including vertical axis, horizontal axis, and trigger of the
waveform to be saved are also saved.
• For waveforms that are loaded using the history memory function, you can select
whether to save all of the history data, save the average of the history data, or save
just the current displayed waveform on the screen. If History is set to All, MATH
channels are not saved. If you wish to save the data of MATH channels, set History
to One. You can also save only the results obtained by searching the history memory
data. For a description of searching the history memory data, see section 11.2.
• For a description of snapshot waveforms, see section 13.9.
Selecting the Range of the Waveform to Be Saved
Select the range (region) of the waveform from the following list of choices. Only the
data that has been saved by selecting Binary in the aforementioned section “Selecting
the Data Type” can be loaded in the DL750/DL750P.
• Main
The range of the normal (Main) waveform. It is the range defined by the displayed
record length (range displayed on the screen).
• Z1
The range of zoom waveform Z1.
• Z2
The range of zoom waveform Z2.
Compressing the Data and Saving: P-P Comp (When Data Type Is Set to Binary)
You can select whether to P-P compress the waveform data before saving.
Power spectrum computation data cannot use P-P compression.
Decimating the Data and Saving: Save Interval (When Date Type Is Set to ASCII)
When saving to ASCII format, data is decimated and converted to ASCII format before
the data is saved.
Save Interval:
OFF (no decimation), Per 5, Per 10, Per 20, Per 50, Per 100, Per 200,
Per 500, Per 1000, Per 2000, and Per 5000
For example, if Per 5 is selected, the data is decimated as follows.
“First data point” “+5” “+10” “+15” ...
13.7 Saving/Loading the Waveform Data