How to write to the file in the user defined interval

Hello

I am trying to find a way to take samples of data in a stream of measures of constraint which came to Labview to a NI 9237 module. These samples must be written to a file for later analysis. The vi must be able to record a data explosion according to an interval defined by the user and sampling frequency.

For example, save at 10 Hz up to 10 seconds every 15 minutes.

My attempt to do this is attached (as you can probably see I'm a newbie to Labview).

In my example, I used a random generator to simulate my data to the NI 9237. Using a loop for, I tried to get the vi to write 5 data points in the file. However he writes the same data point in the file 5 times, instead of 5 successive observations.

Finally, I'd like the vi to write data in the file for a period of time (10 seconds) instead of writing a set number of data points.

Please can someone tell how should I do to achieve this?

Thank you very much

Something like that?

Tags: NI Software

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