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Need Help. NI Labview, SignalExpress, power spectrum (spectra)

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Not sure what you mean, what did you expect it to be? Your time domain signal was in volts, so your PSD is on volts/rt-Hz

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7ofakss

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There is a homework forum hosted by engineering.com:
 
i expect to see Volt^2/Hz.
thanks.
 
Then you simply need to square the ordinate

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7ofakss

Need help writing a question or understanding a reply? forum1529


Of course I can. I can do anything. I can do absolutely anything. I'm an expert!
There is a homework forum hosted by engineering.com:
 
The scare fades in the dB unit.

A simple analogy with the pressure level allows to understand.

Lp=10*Log10(p^2/pref^2) with pref= 2.10^(-5)Pa (and not pref = 2.10^(-5)Pa^2 ...)

Here the operation is 10*Log10((V^2/Hz)/Ref^2) where Ref is in V/sqrt(Hz) and equals 1
 
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