Re: [Discuss-gnuradio] Flow graph using RTL-SDR or OSMOSDR source doesn't execute on 3.6.4.1

[Marcus D. Leech]

> Thanks for the advice Sreeraj, but would a sampling rate mismatch stop 
> the flow graph  from executing at all?
>
> If In the same flow graph I substitute the RTL-SDR by the UHD USRP 
> Source using the N210, the flow graph executes properly.
>
> Joe
The sample-rate mismatches will be different with the UHD devices. 
 2.8Msps is not a proper fraction of 100Msps, so UHD will pick
  something "close".

You really, really, need to make sure that the sample rates within your 
flow-graph are consistent and correct.  Doing anything other than
  that will lead to rapid overruns or underruns at some early point in 
the execution of your flowgraph.   Having correct sample rates isn't
  optional, it's absolutely vital to making sure your flow-graph 
executes correctly, particularly when there are two hardware devices 
involved--
  in this case, an SDR source, and an audio sink.    Everybody has to 
"see" the correct sample rate--there's no "kinda sorta close" operator
  in DSP work.



--
Marcus Leech
Principal Investigator
Shirleys Bay Radio Astronomy Consortium
http://www.sbrac.org