Keysight U1241C/U1242C Service Guide
5
WARNING
– When using the probes, keep your fingers behind the finger guards on the
probes.
– Only use the probe assemblies with RATED MEASUREMENT CATEGORY III
or IV for MAINS measurements.
– Connect the common test lead before you connect the live test lead.
When you disconnect the leads, disconnect the live test lead first.
– Remove the test leads from the multimeter before you open the battery
cover.
– Remove the test leads from the measuring source or target before
changing the rotary switch position.
– Do not operate the multimeter with the battery cover or portions of the
cover removed or loosened.
– To avoid false readings, which may lead to possible electric shock or
personal injury, replace the battery as soon as the low battery indicator
appears and flashes.
– Comply with local and national safety requirements when working in
hazardous areas, and use proper protection equipment.
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 multimeter is for use at altitudes of up to 3000 m.
– Never measure voltage when the current measurement is selected.
– Always use the specified battery type. The power for the multimeter is
supplied by four 1.5 V AAA batteries. Observe the correct polarity
markings before you insert the batteries to ensure proper insertion of the
batteries in the multimeter.
– To prevent damage to the multimeter from battery leakage:
– Always remove dead batteries immediately.
– Always remove the batteries and store them separately if the multimeter
is not going to be used for a long period.