Hi,
I'm doing voltage and current calibration remotely using a power supply.
I'm referring to SLUA379E for the automation.
The only question is the accuracy of the voltage and the current during the calibration.
In the SLUA409A it is written that the the voltage and the current must be +-1mV or +-1mA.
But in commercial power supply products the power supplies have bad accuracy compared to the desired one.
For example, this one http://www.tek.com/datasheet/pws4000-dc-power-supply-programmable-dc-power-supplies
is ±0.02% + 3 mV for the voltage and ±0.05% + 2 mA for the current. If I set 12V and 2Amp for the calibration I obtain +- 5.4mV and +- 3mA !
Is this accuracy still OK, because I don't find any power supplies that fulfill the requirements.
Thanks for your answer,
Alex