Cirrus Logic CRD5463PM - Manual (Page 12)

CRD5463PM
12 DS805RD2
7) Click the Yes button to proceed with the calibration process.
8) Wait for the completion of the process. The Irms Offset calibration takes about 4 seconds.
Figure 18. Calibration Completed Dialog
4.6.3 Gain Calibration
The CRD5463PM gain calibration process is to detect and save the Vrms and Irms register values and
associated true voltage and current values. In normal power monitoring operation, the GUI will use these
values to convert the raw register data into true measurement results. The CRD needs gain calibration
under one voltage and load condition only. Follow the procedure below to operate the gain calibration.
1) Turn on the AC source and adjust the voltage to the nominal operation voltage.
2) Switch on the CRD5463PM.
3) Launch the GUI.
4) Open the System Calibration window.
5) Turn on the load. The power factor of the load should be 1 and the load level should be in the range
of your accuracy interest.
6) Enter the calibration condition, AC volatge and AC current with the voltage and current measure-
ments from the reference meter.
7) Click the GAIN CAL button. The following message will pop up.
Figure 19. Calibration Process Confirmation Dialog
8) Wait for the completion of the process. The gain calibration takes about 5 seconds.
Figure 20. Calibration Completed Dialog