12-17
IM 701730-01E
Saving and Loading Data
12
Executing the Unload Operation
9.
Press the
Unload Exec
soft key. The unload operation is executed.
Explanation
Data Type and Extension
• Binary
• The sampled data in the acquisition memory is saved in binary format.
• The data that is saved can be loaded to display the waveform and compute
numeric data.
• A header file that is used when analyzing the waveform on a PC is automatically
created. The header file cannot be opened on the instrument. For details on the
header file format, see appendix 3.
• The extension is .WVF. The extension of the header file name is .HDR.
• When saving waveform data in binary format, a header file is automatically created
with the extension .HDR. When the instrument is used to copy, delete, change the
names of, or change the file attribute of waveform data files (files with .WVF
extension), the header files are automatically updated to reflect the changes. Do
not delete only the header file or only the waveform data file, as this may cause a
system malfunction.
• ASCII
• The units of the sampled data in the acquisition memory are converted per the
specified range and saved in ASCII format. The data can be used to analyze the
waveform on a PC.
• The file cannot be loaded into the instrument.
• The extension is .CSV.
• Float
• The units of the sampled data in the acquisition memory are converted per the
specified range and saved in 32-bit floating format. The data can be used to
analyze the waveform on a PC.
• The order of the data is little-endian (Intel format).
• The file cannot be loaded into the instrument.
• The extension is .FLD.
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, MATH1 and MATH2 are turned OFF, and
using history waveform 1 condition.
Data Type
Extension
Data Size (Bytes)
Binary
.WVF
Approx. 850 K ((100 kW + 32)
×
four channels
×
the number of
history waveforms
×
2 + 46 K)
.HDR
Approx. 2 K (approx. 3 K when Math1 and Math2 are ON)
ASCII
.CSV
4 to 5 M byte
Float
.FLD
Approx. 1.6 M (((100 kW + 32)
×
four channels)
×
the number of
history waveforms
×
4)
12.5 Saving/Loading the Waveform Data
