I'm having two issues with Linien but I'm not sure if they're related.

The first issue is that the modulation output has a constant DC offset of about 10mV. If I'm using a modulation amplitude of 50mVpp this is quite a significant fraction of the signal. The Red Pitaya oscilloscope program does not have this issue so I don't think it's a hardware problem.

The second issue is that when I plug this output (analog out 1) into a 50 ohm mixer the Red Pitaya loses WiFi signal. Could these issues be related? The mixer input is purely inductive, so has a very low DC resistance. Possibly this is drawing too much current causing issues with the WiFi?

I'm running Linien 2.1.0, with a Windows PC as the client.