Sorensen MML Series Operation and Programming Manual
7-8
Adjust VRA11 on board L until the module’s display is as follows:
LoFFS
<<
−
offset calibration of low range voltage
00XX
<<
−
xx:25 to 40(hex)
Press LOAD , wait two seconds, and check the module’s display:
HoFFS
<<
−
offset calibration of high range voltage
00XX
<<
−
xx:25 to 40(hex)
Press LOAD , wait two seconds, and check the module’s display:
LoFFS
<<
−
offset calibration of low range current
00XX
<<
−
xx:25 to 40(hex)
Press LOAD , wait two seconds, and check the module’s display:
HoFFS
<<
−
offset calibration of high range current
00XX
<<
−
xx:25 to 40(hex)
Remove input terminals’ short circuit. Press LOAD to return to normal display mode.
Voltage measurement adjustment:
Set the load module to CRH mode.
Set the DC source to 80V/0.1A. Connect DMM to the module’s input terminals.
Adjust VRA9 on board L until the display voltage = DMM (V) reading
±
0.01V.
Current offset adjustment:
Set the DC source to 5V/200mA and current shunt range to 200mA.
Set the load module to CCL mode and program the current to 6mA.
Adjust VRA2 on board L until shunt current = 5.9 to 6.1mA.
Set the load module to CCH mode and program the current to 60mA.
Adjust VRA6 on board L until shunt current = 59.5 to 60.5mA.
Current setting/measurement adjustment:
Set the DC source to 5V/7A and current shunt range to 20A.
Set the load module to CCL mode and program the current to 6A.
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