Maxim Integrated 6613_OMU_2+2S_URT_V100 - Manual (Page 14)

6613_OMU_2+2S_URT_V1_00 Firmware Description Document UG_6613_060
14 Rev. 1.1
4.5.2 Atomic Calibration Commands
The atomic calibration commands provide individual calibration of:
• Voltage.
• Current.
• Phase.
• Temperature.
• Power.
A sequence of these commands results in full calibration of the unit.
4.5.2.1 CLV Command
The CLV atomic calibration command calibrates voltage to the target value and tolerance and saves the
coefficients to flash. To calibrate the voltage, enter the CLV command:
>CLV<CR>
The response is:
VCal OK:
>
4.5.2.2 CLI Command
The user can then calibrate the current using the CLI command. The CLI command calibrates the current
from the specified channel to the target value and tolerance and saves the coefficients CLW. To calibrate
the current for channel 1, enter the following:
>CLI<CR> or CLI1<CR>
The response is:
ICal 1 OK:
>
The CLI2 command performs the current calibration for channel 2.
The CLI3 command performs the current calibration for both channel 1 and channel 2.
4.5.2.3 CLP Command
The user can calibrate for phase added by a current transformer by using the CLP command. The CLP1
command calibrates the phase from channel 1 to the target value and tolerance and saves the coefficient
to flash. An example of the procedure is given below.
Apply a controlled precision voltage and current signal at a set phase angle.
1. Enter target phase angle at )C3.
2. Enter phase tolerance at )BF
3. Enter phase calibration command.
>CLP<CR> or CLP1<CR>
The response is
>PCal 1 OK: