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Safety Considerations
Read the information below before using this multimeter. The descriptions and
instructions in this manual apply to the Keysight U1273A/U1273AX
Handheld Digital Multimeter (hereafter referred to as the multimeter).
– Disconnect circuit power and discharge all high-voltage capacitors
CAUTION
– Use the proper terminals, function, and range for your measurements.
– This device is for use at altitudes of up to 3,000 m.
– Never measure voltage when current measurement is selected.
– Always use the specified battery type. The power for the multimeter is
– You are advised to use low leakage batteries when changing to new
– Do not exceed any of the measurement limits defined in the specifications
WARNING
– Do not use the multimeter if it is damaged. Before you use the
– Inspect the test leads for damaged insulation or exposed metal. Check
– Do not operate the multimeter around explosive gas, vapor, or wet
– Do not apply more than the rated voltage (as marked on the multimeter)
6
before testing resistance, continuity, diodes, or capacitance.
supplied with four AAA 1.5 V batteries. Observe the correct polarity
markings before you insert the batteries to ensure proper insertion of the
batteries in the multimeter.
batteries. Please remember to remove the batteries when the multimeter
is not in use for a long period of time. Warning on the risk of battery
leakage.
to avoid instrument damage and the risk of electric shock.
multimeter, inspect the case. Look for cracks or missing plastic. Pay
particular attention to the insulation surrounding the connectors.
the test leads for continuity. Replace damaged test leads before you use
the multimeter.
environments.
between terminals, or between terminal and earth ground.
Keysight U1273A/U1273AX User's Guide
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