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export data to txt for long time acquisition only when recording

Hello

I am using signal express 3.0 to monitor a bench for a very long amount of time (weeks).

I need to acquire strain gauges, load cell and a displacement sensor.

During the test I need sometimes to collect all the data and then to work on them in excel\matlab. I need also to collect also all the data from the beginning to the end of the test

 

The question regards how to manage recording data.

I tried under tool-logging to activate the option to automatically save data to txt file when recording, however the software makes separate files for each signal. I would like to have just one big file in which I see different columns representing the data I am collecting.

 

Is it possible?

 

I can somehow bypass the issue adding one step "save to ASCII/LVM" but this is not satisfactoried because it saves data continuosly as soon as I run the script creating a huge amount of data which I need to post process later.

 

Please keep in mind that it is a fatigue test and it lasts weeks at a load rate of around 3-4 cycles for minute.

 

Could you help me?

 

Thanks

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