Why the division operator give me different results in different screws?

Hi all

I'm quite the LabVIEW newbie, so please forgive me if it's elementary.  I have a signal that I'm acquisition.  The signal is fairly low amplitude (.01-0,1 V).  During each acquisition, I share the values of the sample defined by another few (0.047) using the division operator.  I see inconsistent results and I am puzzled as to why.

In ex1, which I built from scratch for this post, everything works as expected.  I can confirm with the debugger that every reading of the sample overall is well divided and the average, max and waveform graph look like I expect.

When I use a similar construction in my real application, however, the division often results in the INF file, and when I look with the debugger I see after fracture of the values of the signal... just don't make sense to me (x 2).

I thought I must be missing something in the real application associated with split and merge multiple signals, so I ripped out everything except the Division (ex3).  Although this code looks a lot like the ex1 works well, the product always division infs and strange results.

These three examples receive the same signal.  My best guess is at this point that the built-from-scratch example is force double passes to the operator of division "the right way" and that the examples of dysfunction are force double in a different way, incorrect.  I tried to delete and re-create the signal path in the examples of dysfunction without result.  My problem is that I don't know enough about the LabVIEW data types to find out how to impose the appropriate constraint.

Can someone point me in the right direction for a solution?  I would be very happy to help.

Your first image divides your signal of 0.047. Your second and third images are 0.047 dividing your signal. Reverse your son in fracture on image 2 and 3 knots, and I think you should be ok.

Tags: NI Software

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