Spectrum Analyzer Question.

Thread Starter

Petrucciowns

Joined Jun 14, 2009
62
If you are using a spectrum analyzer to view an AM envelope and the Y axis is displayed in DB how can you convert this to voltage? There are equations for DBm or DBv, but I cant find one for DB other than Vout/Vin which I cannot use in this case. I would appreciate any help.

Thanks.
 

Wendy

Joined Mar 24, 2008
23,415
0 dBm = 1 mw

so the voltage depends on the impedance you are dealing with, such as 50Ω.

Most spectrum analyzers will read in dBm.

Widipedia is your friend on this one.
 
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