Auto save (real-time save)
This section describes how to save waveform data (using the real-time save function) to media (an
SD Memory Card or a USB Drive) while measurement is in progress.
Numerical calculation results can also be saved to media automatically.
You can also save both waveform data and numerical calculation results automatically.
The following measurement data can be saved automatically:
Saved data Setting File extension Description
Waveform data Binary format .MEM Waveform data will be saved in the instrument’s
dedicated format (binary format) while
measurement continues.
Ordinarily, it is recommended to use the [Binary]
setting.
Text format .CSV, .TXT* Waveform data will be saved in the text format
while measurement continues.
Although the data can be loaded using
spreadsheet software, it cannot be loaded by the
instrument or the Logger Utility.
MDF format .MF4 Waveform data is saved in the MDF (Ver. 4) format
while measurement is ongoing. These les can
be loaded on a PC using a waveform viewer that
supports the MDF format. They cannot be loaded
by the instrument or the Logger Utility.
Numerical
calculation
results
Text format .CSV, .TXT* Numerical calculation results will be saved after
measurement stops.
*: If a setting other than [Comma] is selected under [Delimiter] in the [Text format] area, the
extension is set to [.TXT].
Binary and text format limitations on auto save operation
The number of channels that can be used with auto save operation is limited as shown below
based on the save format and recording interval as well as whether any CAN Units are connected.
Save format Recording interval
CAN Unit(s)
No Yes
MEM, MDF
1 ms Up to 150 channels Up to 20 channels
2 ms
No limitations
Up to 80 channels
5 ms Up to 150 channels
10 ms Up to 700 channels
20 ms Up to 1500 channels
50 ms or longer No limitations
CSV
1 ms to 5 ms Auto save setting not available
10 ms Up to 60 channels Up to 100 channels
20 ms
No limitations
Up to 200 channels
50 ms Up to 500 channels
100 ms Up to 1000 channels
200 ms Up to 2000 channels
500 ms or longer No limitations
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