Re: [Discuss-gnuradio] Tune UHD - as fast as possible

[Marcus D. Leech]

On 11/02/12 05:50 AM, Marius wrote:
>
> I hope it doesn't add any latency to the equation like: RPC command +
> UHD command + FPGA reaction + RF frontend. I'm not even sure if using
> the C++ API would be any different. So my Monday morning experiment
> now is set ;)
>
> Best,
> Marius
>
>
>   
Well, yes, it will add latency. Not a lot, but *some*.   The hardware
generally takes about 1ms
  to tune and lock.

If you want absolute minimum latency without doing an FPGA-based
implementation, then stick
  entirely with the C++ API. GRC produces Python, and while the blocks
themselves are mostly
  written in C++, things like parameter changes to blocks (including
source/sinks) have to
  "percolate" through Python first, and it's an interpreted language.




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