Hi Erik
I was wondering what you think might cause the base line to jump up and down like this. I'm using your latest firmware as of today, but it was the same with your previous firmware version.
I've done the self test and the level calibration with a through lead. All OK.
Their are no nearby strong signals (that I can find), it's on it's own little antenna. It also sometimes does it with no antenna connected.
I've not changed any setting but set it to high input and the start/stop frequency. All other settings as default.
