76
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
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