hola! i'm what you'd call a newbie, so please bear with me...
i'm having issues checking AC voltage, on the provided power supply. i've got a DMM (sinometer ms8268) and the auto range function is giving me an unstable readout (jumps around, giving wildly different values) when touching the black lead to V- and the red lead to V+, on the power supply. when touching the black lead to ground (green/yellow) and the red to either V- or V+ i get a reading of ~2.5 (and it slowly increments up, from there).
can anyone tell me what i'm doing wrong, or what the issue might be?
note: the DMM reads a 9v battery @9.09v and my wall outlet @121.3v...so i'm guessing the problem doesn't lie with it?
p.s. i've turned the trim pot screw all the way, clockwise and counter clockwise, with little change.