127
Saving Measured Data
Recordable time and data
When
[Auto-save operation]
is set to
[ON]
, the remaining save time for the USB flash drive being
used will be displayed. An estimate of the remaining save time is calculated based on the amount
of usable space on the USB flash drive, the number of parameters being recorded, and the data
saving interval time.
Approximate recordable time for text format and common format
Number of
measurement items
to be recorded per
USB capacity
32 GB (1x)
64 GB (approx. 2x)
128 GB (approx. 4x)
Text
Binary
Text
Binary
Text
Binary
100
301 h
996 h
602 h
1992 h
1204 h
3984 h
200
158 h
517 h
316 h
1034 h
632 h
2068 h
500
65 h
212 h
130 h
424 h
260 h
848 h
1000
33 h
107 h
66 h
214 h
132 h
428 h
2000
16 h
54 h
32 h
108 h
64 h
216 h
5000
7 h
21 h
14 h
42 h
28 h
84 h
The table above does not take file segmentation into consideration. If file segmentation is considered, the
recordable times will be slightly shorter.
In text format, one measured data set consists of up to 13 bytes; in binary format, one measured data set
consists of four bytes.
Estimated data sizes of waveforms are as follows. Data files are segmented every 500 MB.
Volume of waveform data
Text format
Binary format
1 channel, 1000 points
26 kB
6 kB
1 channel, 5 megapoints
130 MB
20 MB
24 channels, 1000 points
456 kB
118 kB
24 channels, 5 megapoints
2270 MB
584 MB
Timing at which new files are created
If data is being saved onto a USB flash drive, a new file will be created when integration starts.
Example 1: If the amount of data exceeds approximately 500 MB per file, a new file will be created. (A
maximum of 1000 files will be saved per measurement.)
Example 2: When you stop integration and then press the
DATA RESET
key, a new file will be
created upon the start of the next time integration. (A maximum of 100 files will be
saved per folder.)
Example 3: A new file is created when the number of data points per file exceeds one
megasampling point.
Example 4: When the saving format is set to binary format, a new file is created when the
integration stops and the voltage and current ranges are changed.
See “Folder and file structure when saving data automatically” (p. 128).
Saving Data and Managing Files
HIOKI PW8001A961-00
Summary of Contents for PW8001-01
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