Re: HP 3582A ?

Bob
The 3582A has a periodic and random noise source but no tracking osc. It
has on-screen digital readout for freq. and amplitude. It also does FFT of
which I know very little! It's really too complex for what I'm trying to do
but its what I have.
73
Hank WD5JFR
"Bob" <nimby_NEEDSPAM@xxxxxxxxxxxx> wrote in message
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"Henry Kolesnik" <kolesnik@xxxxxxxxxxxxx> wrote in message
news:vAgah.31042$yl4.7046@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx
I've posted this to other groups looking for help on using the 3582A.
Has anyone used the HP 3582A audio spectrum analyzer to plot the freq
response of audio devices like mikes, speakers, etc. Knowing the mike
response I'd like to see the spectrum of plucked guitar strings and their
harmonics and see how different manufacturers sound varies in a plot that
can be saved and printed. I got
a 3582A at a swap meet, its complex and probably overkill but that's what
I
have and I am anxious to try it out and would appreciate any tips. I've
downloaded the ops manual from the Agilent site but the manual is very
terse and assumes that I know a lot that I don't! I'm quite versed in
the use of RF spectrum analyzers but on this one I need some help!Sure
would like to talk to someone who is familiar with the 3586A.
Thanks

--

73
Hank WD5JFR




Hank,

Does the 3582A have a tracking oscillator output? That is, does it have an
output whose frequency corresponds to the center of the frequency band
that is input to the analyzer is currently (at that point in time)
responding to?

If not, then to see the frequency response of (let's say) a microphone
then you're going to have to stimulate the microphone/speaker with some
type of broadband noise (e.g., white noise).
If so then you can merely drive the sound source (amplifier driving a
speaker) with the tracking oscillator and hook the microphone (may need a
preamp) to the input of your beautiful new analyzer.

The biggest problem you're going to have to somehow come up with an
acoustic source that has a know output vs. frequency (when plotting the
mike's response) or know input vs frequency (when plotting your speaker's
response).

There are calibrated microphones and sound sources available but they're
VERY expensive.

Bob




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