11-02-2010 09:36 AM
I cant find the VI whcih has this function, please show me ,thx
11-02-2010 09:42 AM
There isn't one, but that doesn't mean you can't create the curve yourself and add it to the graph. See, for example, http://en.wikipedia.org/wiki/Bathtub_curve
11-02-2010 09:55 AM
So except for Bathtub curve, is there any ways that can confirm the signals that i got from CompactDAQ is pure waveform?
11-02-2010 11:34 AM
I'm sorry, but I don't understand your question. What do you mean by confirming it's a "pure" waveform. Please define "pure waveform". What exactly are you trying to determine? The CompactDAQ module you have will have specifications on its accuracy and resolution, so it will never be a "pure waveform" (at least based on my definition of "pure waveform"). It will always be a representation of it.
11-02-2010 11:55 AM
hi, my "pure" waveform means that sine waveform without harmonics or distortion, so u got my meaning?
11-03-2010 02:00 PM
Have you tried just doing an FFT of the signal?
11-03-2010 03:50 PM
Yes, i did, are there any solution else?