IIO Scope Capture

I have a ZCU102 rev1 board, and ADRV9371 eval board that I'm starting a project on.

I manage to communicate with the ADI IIO Scope Capture. In the receiver testing, I am applying a CW TONE at the Rx which have been offset from the setting for ADRV9371.  I can see a signal at the offset as expected e.g. 10MHz in the frequency domain.

However,  in the time domain, I am not seeing the offset signal in the time domain for I and Q. All I see are two noise like curves and the amplitude does change when adjusting the Rx Level. 

What does each channel represent in the time domain? 

Thank you