Re: [Discuss-gnuradio] Minimum amount of data to trigger WX GUI Scope Sink? and Ch 1 vs. Ch2 with Ch 3 vs. Ch 4

[Wayne Roberts]

The trigger of scope sink is not for XY mode.

If you want to view two complex signal simultaneous, then it seems you need two scope sinks.

If you dont see anything, maybe you have a block driving it that doesnt output anything until some condition is met.

On Wed, Dec 11, 2013 at 10:53 AM, David Halls <address@hidden> wrote:

Hi,

I am using WX GUI Scope Sink, and I have set the sample rate = 1M, same as the USRP. It seems that a minimum number of data points are required before anything appears on the plot - is that correct, and how can it be adjusted?

Also, I am looking at constellations, using the XY mode to show real and imaginary. It is possible to have multiple inputs, but is it possible to view multiple 'series' in XY mode?

I seem to be only able to choose Ch X vs Ch Y, e.g. Ch 1 vs. Ch 2 ( Re(in1) vs. Im(in1) ) or Ch 1 vs. Ch 4 (Re(in1) vs. Im(in2)). I would like to see Ch 1 vs. Ch 2 and Ch 3 vs Ch 4 simultaneously?

Thanks in advance! :)

David

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