Hi Dave? G8PTN.
YES the ATU is doing exactly the same as your photos so obviously performing correctly.? Hopefully this week after changing the S8 Relay FET all should be OK.
Thinking ahead I might have trouble with the Shottky Diodes I've used.
I did manage to poke 2 volts DC into one of the input ports and a reading came onto the screen something like 20 watts out? 99%? bla black. But the other Reflected port showed nothing
probably because it's looking for a Negative volts.? Am I correct ?.? I only did it for a very quick check.
I knew that you cannot put more than say 4 volts MAX into the Input Ports.
73s Dave? ?G4RVH?