I'll assume that I'm doing something wrong, but I can't really figure out my uCurrent doesn't seem to be accurate.
I have a DMM Check Plus which has a 1mA current source built in.
The certificate that comes with it states it to be 1.0000mA.
If I measure it directly with a Fluke 189, I get 999.9uA.
Measured with a Fluke 8840A or an Extech EX330, I get 1.00mA.
So overall the reference seems to be good.
When I run it through my uCurrent Gold, I get these readings:
Fluke 8840A: 0.98680V
Fluke 189: 986.5mV
Extech EX330: 0.986V
I've changed the batter to be sure, but the reading hasn't changed.
What am I missing?