An electrical parameter measurement device, comprising: a front end that includes an opening that is sized and dimensioned to receive a conductor under test; a plurality of electrodes positioned proximate to the front end; one or more common mode reference voltage sources coupled to the plurality of electrodes, the one or more common mode reference voltage sources operative to output one or more alternating current, AC, reference voltages in each of the plurality of electrodes; control circuitry communicatively coupled to the one or more common mode reference voltage sources and the plurality of electrodes, wherein the control circuitry, is configured, in operation, to: control the one or more common mode reference voltage sources to output the one or more AC reference voltages in one or more electrodes of the plurality of electrodes; for each electrode of the plurality of electrodes, obtain a reference current signal data point indicative of a reference current signal that is generated in the electrode as a result of the one or more AC reference voltages being outputted in the one or more electrodes and as a result of the conductor under test having a calibration voltage applied thereto and being positioned in a known position in the opening of the front end of the electrical parameter measurement device, wherein a reference frequency of the one or more AC reference voltages in the one or more electrodes of the plurality of the electrodes is different from a frequency of the calibration voltage; and determine a calibration factor to be applied to an electrical parameter measurement by the electrical parameter measurement device based at least in part on reference current signal data points obtained for the plurality of electrodes. a front end that includes an opening that is sized and dimensioned to receive a conductor under test; a plurality of electrodes positioned proximate to the front end; one or more common mode reference voltage sources coupled to the plurality of electrodes, the one or more common mode reference voltage sources operative to output one or more alternating current, AC, reference voltages in each of the plurality of electrodes; control circuitry communicatively coupled to the one or more common mode reference voltage sources and the plurality of electrodes, wherein the control circuitry, is configured, in operation, to: control the one or more common mode reference voltage sources to output the one or more AC reference voltages in one or more electrodes of the plurality of electrodes; for each electrode of the plurality of electrodes, obtain a reference current signal data point indicative of a reference current signal that is generated in the electrode as a result of the one or more AC reference voltages being outputted in the one or more electrodes and as a result of the conductor under test having a calibration voltage applied thereto and being positioned in a known position in the opening of the front end of the electrical parameter measurement device, wherein a reference frequency of the one or more AC reference voltages in the one or more electrodes of the plurality of the electrodes is different from a frequency of the calibration voltage; and determine a calibration factor to be applied to an electrical parameter measurement by the electrical parameter measurement device based at least in part on reference current signal data points obtained for the plurality of electrodes. control the one or more common mode reference voltage sources to output the one or more AC reference voltages in one or more electrodes of the plurality of electrodes; for each electrode of the plurality of electrodes, obtain a reference current signal data point indicative of a reference current signal that is generated in the electrode as a result of the one or more AC reference voltages being outputted in the one or more electrodes and as a result of the conductor under test having a calibration voltage applied thereto and being positioned in a known position in the opening of the front end of the electrical parameter measurement device, wherein a reference frequency of the one or more AC reference voltages in the one or more electrodes of the plurality of the electrodes is different from a frequency of the calibration voltage; and determine a calibration factor to be applied to an electrical parameter measurement by the electrical parameter measurement device based at least in part on reference current signal data points obtained for the plurality of electrodes.