Oh my, my own AC/DC clamp from 300$ fall to 150$, and it got discontinued.
Well my last attempt about finding a technical information of what the three pots does in my clamp by contacting USA /France /Greece/ and Italy, turn out with out results.
Its looks that Chauvin Arnoux and AEMC , they are hard to cooperate so to assist some one in need.
And so they will not see me again, no matter if they offer their tools even for free.