Fw: Re: Fw: Re: [Test-Equipment] Spectrum Analyzer BW measurement

[John Miles]

If there were any justice in the world, this book
(http://www.amazon.com/exec/obidos/isbn=1884932169) would be featured on
Oprah.  Robert Witte is an HP engineer from their analyzer group, and he's
great at explaining topics like this.  Highly recommended.

-- john KE5FX


> 	For most spectrum analyzers what you are saying is roughly true.
> What is typically measured is the low pass filtered output of an
> envelope  (or sometimes quasi RMS) detector looking at the output of a
> log IF amplifier.   Some very modern instruments sample the IF signal
> and use DSP processing and can measure true RMS in some situations,
> however.
>