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Re: [Discuss-gnuradio] What is USRP oscope showing me?
From: |
Lamar Owen |
Subject: |
Re: [Discuss-gnuradio] What is USRP oscope showing me? |
Date: |
Tue, 5 Dec 2006 09:36:04 -0500 |
User-agent: |
KMail/1.9.5 |
On Tuesday 05 December 2006 01:26, Eric Blossom wrote:
> On Mon, Dec 04, 2006 at 10:03:25PM -0800, Chris Stankevitz wrote:
> > 103.3Mhz wave. Note: you do not tune the oscilloscope.
> $ usrp_oscope.py -R a -f 103.3M -d 256
>
> This will plot the signal that is received in a 250kHz wide window
> centered at 103.3 MHz. (64e6 / 256 = 250e3)
What would be useful is for oscope is to have the X axis scaled according to
the actual viewed frequency, not the frequency after downconversion. This
would be the same as the fft program displaying in -X to X MHz instead of
showing the acutal tuned frequency on the axis.
In other words, make oscope look like a real oscilloscope display rather than
the downconverted display now. I have some other ideas; I need to look at
QtDSO (which works with the Velleman PCS64i) and see what would be required
to do the same with the USRP code.
--
Lamar Owen
Director of Information Technology
Pisgah Astronomical Research Institute
1 PARI Drive
Rosman, NC 28772
(828)862-5554
www.pari.edu