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5.3 AC voltage measurement (frequency, duty cycle)
WARNING: Risk of Electrocution. The probe
tips may not be long enough to contact
the live parts inside some 240 V outlets for
appliances because the contacts are recessed
appliances because the contacts are recessed
deep in the outlets. As a result, the reading
deep in the outlets. As a result, the reading
may show 0 volts when the outlet actually has
voltage on it. Make sure the probe tips are
touching the metal contacts inside the outlet
before assuming that no voltage is present.
CAUTION: Do not measure AC voltages if a
CAUTION: Do not measure AC voltages if a
motor on the circuit is being switched ON or
motor on the circuit is being switched ON or
OFF. Large voltage surges may occur that can
OFF. Large voltage surges may occur that can
damage the meter.
1. Set the functionswitch to the green VAC/Hz/% position
2. Insert the black test lead banana plug into the negative
COM jack
3. Insert red test lead banana plug into the positive V jack
4. Touch the black test probe tip to the neutral side of the
circuit.
5. Touch the red test probe tip to the 'hot' side of the
circuit
6. Read the voltage in the main display and the frequency
in the right auxiliary display
7. Press and hold the MODE button 2 second to indicate
'Hz'
8. Read the frequency in the main display
9. Press the MODE button to indicate '%'
10. Read the % of duty cycle in the main display
11. Press EXIT for 2 seconds into the function of AC+DC
test DC and AC TURE Rms
Nieaf-Smitt is a brand name of Mors Smitt
48
www.nieaf-smitt.com
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