Major tech MT1887 IV, Инструкция по эксплуатации, Страница: 8 / 24

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6.1. DC VOLTAGE MEASUREMENTS
CAUTION: Do not measure DC voltages if a motor on the circuit is
being switched ON or OFF. Large voltage surges may occur
that can damage the meter.
1. Set the function switch to the " VDC " position.
2. Insert the black test lead banana plug into the
negative COM jack. Insert the red test lead
banana plug into the positive V jack.
3. Touch the black test probe tip to the negative
side of the circuit. Touch the red test probe tip
to the positive side of the circuit.
4. Read the voltage on the display.
6.2. AC VOLTAGE (FREQUENCY, DUTY CYCLE) MEASUREMENTS
CAUTION: Do not measure AC voltages if a motor on the circuit is
being switched ON or OFF. Large voltage surges may occur
that can damage the meter.
1. Set the function switch to the green VAC/Hz/%
position.
2. Insert the black test lead banana plug into the
negative COM jack. Insert red test lead banana
plug into the positive V jack.
3. Touch the black test probe tip to the neutral side of
the circuit. Touch the red test probe tip to the "live"
side of the circuit.
4. Read the voltage on the display.
5. Press the
MODE button to indicate " Hz ".
6. Read the frequency in the display.
7. Press the
MODE button again to indicate " % ".
8. Read the % of duty cycle on the display.
WARNING: Risk of Electrocution. The probe tips may not be long
enough to contact the live parts inside some 240V outlets
for appliances because the contacts are recessed 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.