• Turn off circuit power and discharge all high-voltage capacitors in the circuit before
CAU T ION
• Use the correct terminals, functions, and range for your instruments.
• Never measure voltage when current measurement is selected.
• Use the instrument with the cables provided.
• Repair or service that is not covered in this manual should only be performed by
U3401A User's and Service Guide
you perform resistance, continuity, diodes, or capacitance tests.
qualified personnels.
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