U1271A/U1272A User’s Guide 5
Safety Considerations
Read the information below before using this multimeter. The descriptions
and instructions in this manual apply to the Keysight U1271A and U1272A
Handheld Digital Multimeters (hereafter referred to as the multimeter).
The model U1272A appears in all illustrations.
• Disconnect circuit power and discharge all high-voltage capacitors
before testing resistance, continuity, diodes, or capacitance.
• Use the proper terminals, function, and range for your
measurements.
• This device is for use at altitudes of up to 2,000 m.
• Never measure voltage when current measurement is selected.
• Always use the specified battery type. The power for the meter is
supplied with four standard AAA 1.5 V batteries. Observe the
correct polarity markings before you insert the batteries to ensure
proper insertion of the batteries in the meter.
• You are advised to use low leakage batteries when changing to new
batteries. Please remember to remove the batteries when the meter
is not in use for a long period of time. Warning on the risk of battery
leakage.
• Do not use the multimeter if it is damaged. Before you use the
multimeter, inspect the case. Look for cracks or missing plastic.
Pay particular attention to the insulation surrounding the
connectors.
• Inspect the test leads for damaged insulation or exposed metal.
Check the test leads for continuity. Replace damaged test leads
before you use the multimeter.
• Do not operate the multimeter around explosive gas, vapor, or wet
environments.
• Do not apply more than the rated voltage (as marked on the
multimeter) between terminals, or between terminal and earth
ground.
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