At National Institute of Metrological Research (INRIM), an automated setup tocalibrate DC Voltage generators, mainly top-level calibrators from 1 mV to 1 kVhas been developed. The heart of the setup is an INRIM-built automated fixedratios DC Voltage divider. The significant achievement of this setup is thepossibility to interconnect the divider, a DMM characterized in linearity, a DCVoltage Standard and a DC Voltage generator under calibration and automaticallyto manage the calibration process. This calibration method allows to save a lotof time, to improve the reliability and to increase the accuracy of thecalibration of generators. The relative uncertainties of the system span from0.6x10-6 to 1.2x10-4 improving the previous capabilities of the INRIMlaboratory for calibration of programmable multifunction instruments. Inaddition, this system allows to avoid the employment of several Standards (someof them still manually operating) carrying out the entire process withoutchanging the setup configuration and without the presence of operators. Theconcept of this setup can be transferred to secondary high-level electricalcalibration Laboratories that could be consider it useful for their calibrationactivities.
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