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– Never use the multimeter in wet conditions or when there is water on the
WARNING
– Before use, verify the multimeter's operation by measuring a known
– When measuring current, turn off the circuit power before connecting the
– When servicing the multimeter, use only the specified replacement parts.
– Use caution when working above 60 V DC, 30 V AC RMS, or 42.4 V peak.
– Be aware of the presence of hazardous AC voltage before using the Low
– Do not use the Z
– When using the probes, keep your fingers behind the finger guards on the
– Connect the common test lead before you connect the live test lead.
– Remove the test leads from the multimeter before you open the battery
– Do not operate the multimeter with the battery cover or portions of the
– To avoid false readings, which may lead to possible electric shock or
Keysight U1271A/U1272A User's Guide
surface. If the multimeter is wet, ensure that the multimeter is dried only
by trained personnel.
voltage.
multimeter in the circuit. Remember to place the multimeter in series
with the circuit.
Such voltages pose a shock hazard.
Pass Filter (LPF) function for AC voltage measurement. Voltages
measured are usually greater than what indicated on the multimeter as
the AC voltages with higher frequencies have been filtered through the
LPF function.
LOW
measure voltages in circuits that could be damaged by this function's low
input impedance of 2 kΩ (nominal).
probes.
When you disconnect the leads, disconnect the live test lead first.
cover.
cover removed or loosened.
personal injury, replace the battery as soon as the low battery indicator
appears and flashes.
(low input impedance) function (U1272A only) to
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