Re: [Discuss-gnuradio] Problem with N200 and waterfall display in grc

[Josh Blum]

On 08/16/2011 08:33 AM, Isaac Gerg wrote:
> Hi Everyone,
> 
> I have a USRP N200 rev 2.  I created a simple graph using the gnu radio
> companion (grc) which is composed of three blocks, a UHD source, a variable
> slider, and a WX FFT Waterfall display.  When I run this graph, i quickly
> see the waterfall display fill up with the color blue and then the
> application becomes unresponsive.  How can I fix this?
> 

Sounds like the opengl plotter widget is getting overwhelmed. Its
different on every computer. Try a smaller fft size to shrink the size
of the on-screen texture.

> When I run the uhd_fft tool, it appears to work correctly -- it shows me a
> spectrum and allows me to adjust the fc and the gain.
> 
> Also, where can i find a guide to the N200 debug lights?  Lights C, E, and F
> seem to be on all the time.  Is this okay?
> 

http://www.ettus.com/uhd_docs/manual/html/usrp2.html#front-panel-leds