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Need Help. NI Labview, SignalExpress, power spectrum (spectra)
- Thread starter dho
- Start date
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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- Thread starter
- #3
Then you simply need to square the ordinate
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amanuensis
Automotive
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
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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