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when i conduct frequency hopping,why the receive IQ data become garbled in fastlock mode

Question asked by daxuan on Sep 17, 2016
Latest reply on Sep 20, 2016 by Vinod

please,when I use ad9361's fastlock mode,I send IQ data after VCO  is stable.The received data is OK during the carrier is not change .I is I,Q is Q.but When performing a frequency hopping,the received data is not ok.the data of I is possibility becaming the data of Q.I am very confused,i don't know why it is so.Looking forward to your reply.


the left was sampled when the carrier is 800MHz,the right was smpled when thwe carrier is 860MHz.The change of IQ is when the carrier is changing.