09-04-2016, 07:13 AM
Hi Arne, don’t know about the scope but if you use a volt meter the top row is positive and bottom row is ground. At halfway you should have about 2.5v, 5v at full and 0v at off. Touch any ground pin on the board and run along top row of each channel to see the voltage. I do this during my testing, it did check out good so maybe it’s a scope setting.