One thing I can't work out is which VR to twiddle to get the meter calibrated. I have to increase the knob to make the analogue meter show 1V more, to get the actual voltage (measured on a dmm). For example, if I want 10V output on the 30V range, the
analogue, integral meter will say "11V".
I have read the calibration procedure in the PDF, but it's as clear as mud.