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# Individual Phase Calibration

The calibration is performed by means of the CAL command, specifying the references for a single phase. To calculate the phase calibration constants, it is advisable to set the WECO or the Meter Tester used to apply a noticeable phase difference between the voltage and the current vectors. The recommended value is 60º (power factor 0.5L).

The parameters of the calibration command are the voltage, current, and angle applied. When the command is sent, the application code computes and saves the calibration constants in non-volatile memory.

    >CAL (Ua=220.00,Ia=1.00,Aa=60.00)
    Calibrating...
    Calibrating Done!
    >

When the process is finished, use the PAR command, as explained in the previous section, to read the measurements and check the accuracy obtained with the calibration.

Rev: E