User`s guide

IV U1273A/U1273AX User’s Guide
Safety Considerations
Read the information below before using this multimeter. The descriptions
and instructions in this manual apply to the Agilent U1273A/U1273AX
Handheld Digital Multimeter (hereafter referred to as the multimeter).
CAUTION
• 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 3,000 m.
• Never measure voltage when current measurement is selected.
• Always use the specified battery type. The power for the multimeter
is 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.
WARNING
• Do not exceed any of the measurement limits defined in the
specifications to avoid instrument damage and the risk of electric
shock.
• 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.