I have an analogue bench psu (Isotech IPS2302A) which can be configured in series for bipolar use. Since it has an analogue output meter, I need to use a DVM for accuracy each time I alter the voltage, which is time consuming. So I'm looking for something digital, not too expensive, but nothing shite either. It must have bipolar option (-/G/+). I was looking at the Rigol DP832, but seems it doesn't go bipolar.
Common voltages required are
(+/G/-) 15VDC
(+/G/-) 12VDC
(+/-) 5VDC