User manual

LABKON Series
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24 GMC-I Messtechnik GmbH
3.10 The Power Supply Calibration
Because various factors may cause the reduction of the power supply’s output precision after it has been used for a period of
time, the user should calibrate the power supply’s output to make the output return to the previous precision. But it is
suggested that the power should not be calibrated frequently. This section mainly introduces how to unsecure the power
supply and the detailed procedures of manual calibration.
3.11 Calibration Procedure
Caution
When calibration is conducted, the ambient temperature should be within the range of 25° C ± 2° C. All testing instruments
and the supply power must be preheated for 30 minutes before calibration.
Press the “Vset” key while switching on the power supply and the display will show as follows:
Press “secure” key after pressing “2nd” key and you will see the following graph:
Enter the password “003662”, then press “Enter” key to enter into calibration menu, which is shown as below:
Select CV, CC or OV mode calibration by direction key. If “DEF” is selected, all calibration parameters are restored to default
value. CV, CC and OV mode should be calibrated one by one, which is the correct calibration sequence. Return to calibration
menu after each mode calibration is completed. Press “Clear” key to exist calibration state.