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B. SAFETY CONSIDERATIONS
WARNING: Please follow manufacturers test procedures
whenever possible. Do not attempt to measure unknown
voltages or components until a complete understanding
of the circuit is obtained.
GENERAL GUIDELINES
ALWAYS
• Test 440 before using to ensure proper operation.
• Inspect the test leads before using to make sure there
are no breaks or shorts.
• Double check all connections before testing.
• Have someone check on you periodically if working
alone.
• Have a complete understanding of the circuit being
measured.
• Disconnect power to the circuit, then connect the test
leads to the 440, then to the circuit being measured.
NEVER
• Attempt to measure unknown high voltages.
• Attempt to measure current with the meter in parallel to
the circuit.
• Connect the test leads to a live circuit before setting up
the instrument.
• Touch any exposed metal part of the test lead assembly.
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