Save only certain amount of data

Alex_Coleman · Post by **Alex_Coleman** » Fri Aug 01, 2014 3:08 pm

Hi all, beginner here.

I've purchased a picoscope 5242A and I'm working on a project using LabVIEW, which I don't have much experience with.
Anyway, I have a system outputting analogue signals at a fixed frequency and I'd like to record the digitized version of the signals in a binary file and then display them afterwards. I need the picoscope to operate in streaming mode, as my system runs in real-time. I've managed to do all of the above. Now the question is:
- How can I cut some of the digitized signals that I'm not interested? As in, the LabVIEW application reads the signals from picoscope but then it doesnt display everything once I read the binary file. Please have a look at the attached screenshots for more clarification. I have also attached both VIs I'm working on.

Thanks very much in advance.
Alex.

Post by **Martyn** » Thu Aug 07, 2014 6:17 am

Do you mean that the "area of interest" is the area you wish to cut ?

Alex_Coleman · Post by **Alex_Coleman** » Mon Aug 11, 2014 9:14 am

Hi Martyn
Yes please. Any ideas?
Thanks

Post by **Martyn** » Mon Aug 11, 2014 12:28 pm

You would need to do some array copying, and copy the data up to the point you wish to cut, and then again from the end of the cut.

Alex_Coleman · Post by **Alex_Coleman** » Mon Aug 11, 2014 1:39 pm

Would you be able to show me an example of how to do that? Or point me to the right direction. I'm a LabVIEW beginner

Thank you.

Post by **Martyn** » Wed Aug 20, 2014 8:49 am

I would suggest looking at http://www.ni.com/white-paper/7571/en/

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