Re: [Discuss-gnuradio] about samples

[Josh Blum]

On 12/20/2010 09:03 PM, lishan_wh wrote:
> Hi, I'm trying to use USRP to receive signals and collect the
> samples.Here is the flow graph: 
> usrp_source_c-->stream_to_vector-->complex_to_mag-->vector_sink_f dst
> = gr.vector_sink_f() data =  dst.data() In my opinion, what stores in
> data should be the amplitude of the samples. But I found that
> len(data) is quite different for each running. I don't know why. I
> also want to know the time duration for each sample collecting. Thank
> you! Ally
> 

You may want to put a gr_head block between the input and the output to
control the number of samples that pass into the vector sink. In
addition, the head block will terminate flow graph execution when the
samples have accumulated.

-Josh

> 
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