User Manual

then press the Next point softkey to calibrate the second point.

4. Supply 0V from the external DC power supply. The AD value should be 7900±300,

then press the Next point softkey to calibrate the third point.

5. Input -9Vdc from the external DC power supply. The AD value should be 1000±300,

then press the Next point softkey.

1. The instrument will show “Cal End”, then press ESC to complete the external voltage