Re: [Discuss-gnuradio] How to use the SNR block in the GRC

[Josh Blum]

On 04/07/2011 05:18 AM, intermilan wrote:
> 
> Hi all:
>     I found these is a block gr_probe_mpsk_snr in the grc which is used to 
> measure the snr of the bpsk or qpsk signals. But I
> do not know how to use this block.In my flow graph, I put the bpsk modulated 
> data input this block,and put the output of the block to a file_sink.
> But there is nothing in that file.So I hope someone can tell me how to use 
> this block.
> Thanks in advance.
> inter
>                


I dont know what version your using. But I reworked how the probe blocks
work since the last release, so here is how it works in the current master:

Attach a probe block to your signal. Notice in the probe block docs,
that the available functions are listed. Use the function probe block to
read that function periodically and to write the value into a variable.

To display the result, just use the ID from the function probe in the
value parameter for the appropriate graphical widget.

-Josh
                        
> 
> 
> 
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden
> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio