Re: [Discuss-gnuradio] Displaying the Magnitude on the scope

[Eric Blossom]

On Thu, Nov 17, 2005 at 09:01:22AM -0700, Robitaille, Michael wrote:
> I now able to demodulate my signals and would like to view the magnitude of
> the output rather than the real/img.  I tried to use the gr.complex_to_mag()
> operation and feed it in the scope_sink_f but I get a blank scope screen.
> 
>  
> 
> u_mag = gr.complex_to_mag()
> 
> self.connect(u_xlated, u_mag)
> 
> scope_input = scopesink.scope_sink_f (self, panel, sample_rate= base_rate)
> 
> self.connect ((u_mag, 0), (scope_input, 0))
> 
> Does scope_sink_f need two inputs?

No.  

Try setting it to trigger in "Auto" mode on the display.
You might also try hitting the "50%" button (sets trigger level to 50%
of min/max).

Eric