Re: Caution - grown men playing with oscilloscope toys
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Well, I'm going to have to get a little tutoring from Ed since I just tried FFT on my Rigol for the first time today and haven't got it all figured out yet.
Regarding dB-Vrms, I think that's dB relative to 1 volt RMS. So if you have your source driving a 50 ohm load, 1 volt RMS gives +13 dBm into the load. With that value, your scope should say 0 dBm. So I think you just add 13 to what the scope gives to get dBm.
Does that make sense?
I kinda think the FFT implementation on the Rigol isn't quite as slick as it is on the Owan, or whatever that was.
On Tue, Jan 20, 2015 at 4:14 PM, n5em@... [PHSNA] <PHSNA@...> wrote: