Hi Henrik,
I will like to understand what are OUTPUT_1 and OUTPUT_2 : any help? Sine or square ?
What about the other two outputs ?
What is the purpose of R_13 Trim ?

I do not have any schematics for this board nor manual to read ! My board is exactly the one shown in your photo.

Thanks again for the great help .
Bye
Ambrogio
IW2FVO