DIGITAL MULTIMETER
OPERATING INSTRUCTION
2) Under the manual range mode, when only ‘OL’ or ‘-OL’
is shown on the LCD, it means the measurement has
exceeded the range. A higher range should be
selected.
3) Under the manual range mode, when the scale of the
value to be measured is unknown beforehand, select
the highest range first and lower the range gradually.
4.11 MEASURING AC VOLTAGE
WARNING
Beware of Electrocution.
Pay special attention to avoid electric shock when
measuring high voltage.
Do not input any voltage 750V rms AC, which may
destroy the inner circuit, although a higher voltage
can be shown.
4.11.1 Plug the black test lead into the COM jack and the red
test lead into the V jack.
4.11.2 Set the rotary selector to the V range position.
4.11.3 Press the "SELECT" button to switch to AC
measurement. Then press the “RANGE” button to
choose the auto range or manual range mode.
4.11.4 Connect the test leads to the voltage source or load
terminals for measurement.
4.11.5 Take the reading on the main indicator of the LCD.
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DIGITAL MULTIMETER
OPERATING INSTRUCTION
NOTE:
1) At small voltage range, unsteady readings may 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.
2) At the manual range mode, when only ‘OL’ or ‘-OL’ is
shown on the LCD, it means the measurement has
exceeded the range. A higher range should be
selected.
3) At the manual range mode, when the scale of the value
to be measured is unknown beforehand, select the
highest range first and lower the range gradually.
4.12 MEASURING FREQUENCY
4.12.1 Plug the black test lead into the COM jack and the
red test lead into the Hz jack.
4.12.2 Set the rotary selector to the Hz range position (or
press the “Hz/DUTY” button at the AC/DC V range to
switch to Hz measurement).
4.12.3 Connect test leads to the two ends of the source or
load for measurement.
4.12.4 Take the reading on the main indicator of the LCD.
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(1 pages)
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