This just means your PC is not fast enough to sample at that speed and update the window. Try keeping the sample rate low.

On Sat, Feb 4, 2012 at 2:50 AM, davood ahmady <aassbb...@gmail.com <mailto:aassbb...@gmail.com>> wrote:

    hello all
    when I run uhd_fft.py and change sample rate from 1 to 2 the graph
    is being locked and i couldnot change anythig,
    what is my fault?
    Thank you.
    Davood
    _______________________________________________

Also try using:

fft-rate 5 --averaging

to reduce the number of updates, which also helps.

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

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