Use fmcomms2 development board AD9361 configuration register, set the BIST test, 3 f4 can set 4 b receives the data, set up 03 termination of the radio frequency spectrum instrument can normal single tone signal spectrum, rf frequency, reception clock, etc are properly configured, but put 3 f5 configuration 01 formed from the ring after receiving data zero for the whole, is why? Has will change to address the corresponding delay in 006 and 007, remains zero for the whole, at the same time, if there is no test mode, the signal is set to zero, all radio spectrum instrument is similar results and send a single tone, as if the signal didn't sent out, but there is not reason, the great god of all stripes, please help, thank you,