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AD9361 configuration

Question asked by sunilkumar on Apr 24, 2014
Latest reply on Apr 28, 2014 by DragosB

I am working on AD9361 Transceiver &  have followed the steps given in below link

http://wiki.analog.com/resources/eval/user-guides/ad-fmcomms2-ebz/software/baremetal

 

I have ported bit file, complied the code & executed the  c code on zed board.

If i understand correctly, 1MHz CW is being generated in reference design and pushed to AD9361TX section, so expected Tx output is single tone at 2401MHz/2399MHz.

 

I observed on chipscope,  Tx signal(sine wave) are generated well.

On the spectrum so many multiple tones are observed.Two of them are found at 2400.5MHz&2399.5MHz. Apart from this so many tones are there in band of 20MHz(As we farther from 2400MHZ, amplitude gets lesser).

how to resolve the issue??

 

One more point, when i press PS Reset, a very good CW is observed at 2400MHz.

Why is it so??? Does is erase the running executable file on processor??

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