Hi
I was wrong buying this bench YIHUA 305D IV!!! is was a real mistake since amps readings are terrrible off... Can anyone know how can I calibrate with the 4 internal blue pots in order to have real amps reading and not offset in low currents (like 100mah error!!...)
I have managed to get volts almost acceptable *compared with my reliable unit multimeter 980d+, but current think has 3 pots to work with.... i know maybe they are for:
1- mA range gain.
2- A range gain.
3- mA and A offset.
4- V gain. says VR in the board attached pic
but dont know which one controls what, in the IV version... see circuit attched
also the procedure to calibrate or adjust..... low current measure half of the real current eg says 50mah and should be 110mah in 4000mah says 310mah and so
crap
I was wrong buying this bench YIHUA 305D IV!!! is was a real mistake since amps readings are terrrible off... Can anyone know how can I calibrate with the 4 internal blue pots in order to have real amps reading and not offset in low currents (like 100mah error!!...)
I have managed to get volts almost acceptable *compared with my reliable unit multimeter 980d+, but current think has 3 pots to work with.... i know maybe they are for:
1- mA range gain.
2- A range gain.
3- mA and A offset.
4- V gain. says VR in the board attached pic
but dont know which one controls what, in the IV version... see circuit attched
also the procedure to calibrate or adjust..... low current measure half of the real current eg says 50mah and should be 110mah in 4000mah says 310mah and so
crap
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