[Hackrf-dev] Constallation plot

Simon IJskes simon at ijskes.org
Fri Nov 7 18:55:00 EST 2014


On 07-11-14 02:18, Vitor Augusto wrote:
> Hi.
>
> Please I need help. Could someone tell me why I'm getting a
> constallation plot this way (link below)?
>
> This plot is from Hackrf One at 1.1GHz. Curiously, at 500MHz the
> constallation is well distributed.
>
> http://i.imgur.com/LAMigRt.png

Are you sure you want a throttle block in there. The osmocom source will 
already dictate sampling rate

the docs say:
        N.B. this should only be used in GUI apps where there is no 
other rate limiting block. It is not intended nor effective at precisely 
controlling the rate of samples. That should be controlled by a source 
or sink tied to sample clock. E.g., a USRP or audio card.

Gr. Simon




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