Advantech Adam - 4021, User Manual, Page: 205 / 286

193 ADAM-4000 Series User Manual
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4. Issue the Analog Data Out command to the module with an output value of 4
mA.
5. Check the actual output value at the terminals. If it does not equal to 4 mA, use
the “Trim” option in the “Calibrate” sub menu to change the actual output. Trim
the module until the millimeter indicates exactly 4 mA. In the case of using a
voltage meter with shunt resistor, the voltage meter should indicate exactly 1 V.
(When calibrating for 20 mA using voltage meter and shunt resistor, the correct
voltage would be 5 V.)
6. Issue the 4 mA Calibration command to indicate that the output is calibrated.
The calibrated parameters should be stored in the modules EEPROM.
7. Execute an Analog Data Out command with an output value of 20 mA, and the
output will approximately be 20 mA.
8. Continue executing the Trim Calibration command until the output current is
equal to exactly 20 mA.
9. Execute the 20 mA Calibration command until the present output is exactly 20
mA. The analog output module will store its calibrated parameters in EEPROM.