FFT in LTSpice

Thread Starter

atferrari

Joined Jan 6, 2004
4,764
LTSpice

I am confused about this: what it is the actual reference (0 dB) as shown in the graphic of a FFT from a certain signal?

In other words, the level of the harmonic content, is it compared to what?
 

debjit625

Joined Apr 17, 2010
790
Normally the FFT shows the result in decibel but you can change the unit to Volts or Amp,use "linear" option to repersent the magnitude.To, get the option window in LTSpice click on the decibel units on FFT window.

Good Luck
 

Thread Starter

atferrari

Joined Jan 6, 2004
4,764
Yes Ron, I was suggested to do a FFT exactly on that. It is clear for me now.

Good Luck, thanks for your reply as well! :D Have to experiment with all that.
 
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