11-24-2016 10:42 PM
I'm new to Labview and currently am trying to measure a specific point from a the simulate signal express VI. For example if I simulate a sin wave and I want to know the amplitude at 1 second how would I do this?
11-25-2016 01:52 AM
Hi Mickan,
For example if I simulate a sin wave and I want to know the amplitude at 1 second how would I do this?
You get a waveform from your (simulated) signal. Then pick the sample at (about) 1s.
You might not get the sample at exactly 1s as the time resolution is related to your sample rate…
11-25-2016 09:31 AM
You don't include any code (which would tell us how you are doing this and what version of LabVIEW you are using), but I'm going to guess you are using an Express VI whose output, "Signal", is a (Dreaded) Dynamic Data Wire (I added the third "D" descriptor). You can turn this into a Waveform using the Signal Manipulation palette, and if you know how to use Waveforms, you can find the value that is nearest to your chosen time. If the Signal Generator is sending out "packets" that are shorter than your chosen time, you'll need concatenate them or otherwise handle the pieces.
Why don't you give it a try, see if it makes sense to you, and if you have more questions, come back to this post and (please!) attach your VI. [If you only attach a picture of the VI, I'll probably complain ...].
Bob Schor