Re: [Discuss-gnuradio] WX GUI FFT sink block issues

[Marcus Müller]

Hi!
Just a side note: Try to replace your WX GUI widgets with QT ones (also set the 
Generate Option to QT in GRC). They are pretty mature and work well; also, in 
the long run, GNU Radio's going to move away from WX.

Greetings,
Marcus

On 04/23/2014 01:06 PM, Attila Kinali wrote:
> On Wed, 23 Apr 2014 12:04:52 +0500
> ali hanif <address@hidden> wrote:
>
> > I am facing issues regarding WX GUI fft sink block..
> > First that whatever center frequency i am providing it is showing a peak at
> > that frequency whether input signal is there or not..??
> The peak means that there is a DC bias component in your signal. That's
> pretty normal, depending on what kind of hardware you use.
> E.g. a bladeRF will show it, while (at least some) RTL-SDR don't have it.
>
>
> > Secondly there is a question that whether it can automatically shift to the
> > frequency by detecting the frequency of the input signal or not??
> You can supply the center frequency to the block. You can specify it
> as a variable to all blocks that need it, in order to have it to change
> only at one place.
>
> > Another issue in general that i am unable to use two sink blocks at the
> > same time..e.g.if i am using fft sink and scope sink then when i execute
> > it(i have no hardware attached uptill now)..then both plots are empty and i
> > have to disable one of them to get working..??
> That sounds weird. Can you show a screenshot of your GRC graph?
> (unless you are using a coded flow graph, than that please).
>
>                         Attila Kinali