I just recently received (Jan. 2016) a Rigol DP832 Digital ver. 00.01.14.00.03, Analog ver. 03.02.04.03.02.04 and bootloader 01.09. I have noticed a strange readback problem on startup no load. I have searched the forum looking for a resolution and possible calibration fix but have not found anything specific to my problem. In short when I power the unit up and activate the channels I get:
No load everything zeroed.
CH1
show 10mV, 0A, OW
read 4.2mV, 2.25mA
CH2
show 2mV, 1mA, 0W
read 4.7mV, 2.63mA
CH3
show 2mV, 3mA, 0W
read 1.6mV, 0.85mA
Reading from a Fluke 87 (yeah, an original like new 87)
These errors will carry forward as input values are adjusted. I understand (to some degree) the limits of the unit accuracy but it just bugs me that I cannot set to unit to read zero at startup. The 1 or 2 mV hear or there is no big deal but the 10mV on CH1 really bugs me. Any way to fix?