User`s guide

U1273A/U1273AX User’s Guide V
WARNING
• Never use the multimeter in wet conditions or when there is
water on the surface. If the multimeter is wet, ensure that the
multimeter is dried only by trained personnel.
• Before use, verify the multimeter's operation by measuring a
known voltage.
• When measuring current, turn off the circuit power before
connecting the multimeter in the circuit. Remember to place the
multimeter in series with the circuit.
• When servicing the multimeter, use only the specified
replacement parts.
• Use caution when working above 60 V
DC, 30 VAC RMS, or 42.4 V
peak. Such voltages pose a shock hazard.
• Be aware of the presence of hazardous AC voltage before using
the Low Pass Filter (LPF) function for AC voltage measurement.
Voltages measured are usually greater than what is indicated on
the multimeter as the AC voltages with higher frequencies have
been filtered through the LPF function.
• Do not use the Z
LOW
(low input impedance) function to measure
voltages in circuits that could be damaged by this function’s low
input impedance of 2 k
Ω.
• When using the probes, keep your fingers behind the finger
guards on the probes.
• 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.
• 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.