I am using AD9361+zc706 platform. And I have tested the data loopback mode(0X3F5=0x01), it seems that my digital interface timing is correct. Then I test the RF loop. I directly connected to the RF transceiver interface with a SMA cable, and I saw something strange:
Sometimes, The received I-channel data becomes the transmitted Q-channel data；
Sometimes, The received I-channel data is the transmitted I-channel data,But data polarity is reversed.
I am using No-os software, Can anyone help me ?