Re : how do I find the FWHM of a test signal

[Stysley]

I am simply wondering how would I find the pulse width at of a test signal (real or generated by a VI) at full width half maximum.  It's pretty easy to do on my oscilloscope so I can only assume labview has something similar built in I am just having trouble finding it.  Thanks

[tinnitus]

hye

i'm not sure to clearly understand, is it what your are looking for ?

@+

Tinnitus

[Andrew_E]

Hello,

There may be several other forum posts that explain this in different ways. A, B, C . As you will find in alot of things associated in LV, it is easily coded for, but there is not a function to specifically find the FWHM, yet. If you could still report on what method you use to perform the FWHM calculations, it would be extremely helpful for other people searching the forums.

[Stysley]

There is a "pulse and transitions measurements.vi" that gets me close but as of right now I am not having much luck adapting it for a gaussian pulse shape. 

[tinnitus]

hello,

if your signal is not too noisy you can try that,

you can simulate differente noise level to see influence on width precision ,

also you have  the way , by your self, to mean multiple width ...

 best regards

Tinnitus