Re: [Discuss-gnuradio] QT Oscilloscope

[Ian Larsen]

Your intuition is correct.  The Basic TX and RX boards allow this --
they don't do any RF front-end processing.

The Basic boards let you make the USRP into a poor man's oscope, with
very limited voltage ranges on the input.

-Ian

On 9/7/07, Rohit Garg <address@hidden> wrote:
> Hi,
>
> I am curious about what you have created. I imagine that you are
> grabbing the signals with the ADC of the usrp when used as an
> oscilloscope. If that is correct then it must be possible to use it as
> a signal generator as well if you plucked the output off the DAC.
>
> More generally, has the usrp been designed to allow easy decoupling of
> the RF frontend and to use it as a pure signal analyzer/generator?
>
> On 9/7/07, Ian Larsen <address@hidden> wrote:
> > All,
> >
> > As part of some thesis research, I've made a stand-alone
> > oscilloscope/spectrum analyzer that also shows AM and FM demodulated
> > signals, using the gnuradio C++ libraries.  It uses QT, and the output
> > looks very pretty, being anti-aliased and such.  You can also grab
> > screenshots from it by pressing a button.  The sourceforge page is
> > here:
> >
> > http://sourceforge.net/projects/usrposcope/
> >
> > and you can get the source via subversion.  Since (as far as I know)
> > the C++ libraries don't support multiple daughterboards yet, this will
> > only work with the BasicRX.
> >
> > It has fairly limited capability, but is a good intro for those who'd
> > like to use the C++ libraries and/or would like to expand the
> > functionality.
> >
> > -Ian Larsen
> >
> > --
> > My PGP Public Key:
> > http://www.scrapshark.com/pubkey.txt
> >
> >
> > _______________________________________________
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> > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
> >
>
>
> --
> Rohit Garg
>


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