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Re: [Discuss-gnuradio] QT GUI Sink: wrong frequency scale, fft size (nex


From: Hans Van Ingelgom
Subject: Re: [Discuss-gnuradio] QT GUI Sink: wrong frequency scale, fft size (next branch)
Date: Sun, 19 May 2013 17:10:26 +0200

Ok, could you add me as a contributor? I just added an account (username: hansvi).


On Sun, May 19, 2013 at 11:25 AM, Tom Rondeau <address@hidden> wrote:
On Sun, May 19, 2013 at 12:58 AM, Hans Van Ingelgom
<address@hidden> wrote:
>
> If you just make any signal source and a QT GUI Sink, you'll see that the
> frequency scale is wrong: a 32ksps signal will show a frequency range from
> -8kHz to +8kHz (instead of -16...16kHz).
>
> Also, if you keep the default FFT size of 1024, the chooser widget shows
> 256, but in reality the FFT size is correct at 1024. If you select 1024,
> nothing changes. Going back to 256, the spectrum becomes coarser.
>
> BTW, I can zoom in/out in the FFT view using the scroll wheel, but I can't
> move up/down. By default I just see the frequency peak of the synthesized
> sine wave, not the noise floor.
>
> Greetings,
> Hans.

Hans,

Thanks for the reports of the issues. Please use the bug tracker so we
can properly keep track of these bugs to fix them:

http://gnuradio.org/redmine/projects/gnuradio/wiki/FAQ#How-can-I-post-on-this-wiki-use-the-bug-tracker

Tom


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