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AD9361 RX channel test,I receive data is correct, Q receive data is wrong

hi,

I'm working with the AD9361 with LVDS,FDD,Transmission channel test signal spectrum is correct。

Test receive channel,I'm using the AD9361 BIST data looopback (Tx data -> Rx data).Reg. set up: 0x3F4=0x00; 0x3F5=0x41;0x3F6=0x00 in order to achieve alignment I'm changing the Tx and Rx delay (Reg 0x006, 0x007).No matter how I debug time delay(Reg 006,007) there is always a way receive data is wrong, either I or Q。

What reason is this?

.


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