I have a question about the BIST mode of the AD9361. My hardware platform is KC705+FMCOMMS3. I use Xilinx SDK to configure AD9361. And HDL is made by kc705_fmcomms2-3_2015_r2. I just add some debug core. When the configuration is complete, switch to BIST mode, tone waveform, but the received waveform is not like a sine wave, who can tell me where the problem is?