DIGITAL MULTIMETER
OPERATING INSTRUCTION
2 Turn the rotary selector or press any of the
“HOLD/B.L”, “SELECT”, “RANGE”, “Hz/DUTY” or
“REL” button to resume operation of the meter under
auto the power off mode.
3 Press the “SELECT” button to disable the auto power
off function.
4.9 PREPARATING FOR MEASUREMENT
4.9.1 Switch on the power by turning the rotary selector. If
the battery voltage is lower than 3.6V, the “ ”
symbol will appear and the batteries should be
replaced.
4.9.2 The “ ” symbol beside the input lead shows that the
input voltage or current should not exceed the
specified value in order to protect the internal circuit
from damage.
4.9.3 Turn the rotary selector to the required function and
range to be measured. Under the manual mode,
choose the highest range when the value scale to be
measured is unknown.
4.9.4 Connect the common test lead first and then the
charged test lead when making connection. Take
away the charged test lead first when disconnecting.
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DIGITAL MULTIMETER
OPERATING INSTRUCTION
4.10 MEASURING DC VOLTAGE
WARNING
Beware of electrocution.
Pay special attention to avoid electric shock when
measuring high voltage.
Do not input any voltage over 1000V DC, which may
destroy the internal circuit, although a higher voltage
can be shown.
4.10.1 Plug the black test lead into the COM jack and the
red test lead into the V jack.
4.10.2 Set the rotary selector to the V range position.
4.10.3 Press the "SELECT" button to switch to DC
measurement. Then press the “RANGE” button to
choose the auto range or manual range mode.
4.10.4 Connect the test leads to the voltage source or load
for measurement.
4.10.5 Take the reading on the main indicator of the LCD.
The polarity symbol denotes the polarity of the end
connected by the red test lead.
NOTE:
1) At small voltage range, unsteady readings will appear
before the test leads contact the circuit. This is
normal because the meter is highly sensitive. When
the test leads contact the circuit, the true reading will
be shown.
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(1 pages)
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