Major tech MT22 Manuel d'instruction - Page 11

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Major tech MT22 Manuel d'instruction

6.6. AC VOLTAGE MEASUREMENTS

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.
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 V AC position.
2.
Insert the black test lead banana plug into the negative (COM) jack
and the red test lead banana plug into the positive (V) jack.
3.
Touch the test probe tips to the circuit under test.
4.
Read the voltage on the display. The display will indicate the proper
decimal point, value and symbol (AC, V, etc.).

6.7. DC CURRENT MEASUREMENTS

CAUTION: Do not make current measurements on the 10A scale for
longer than 30 seconds. Exceeding 30 seconds may cause
damage to the meter and/or the test leads
1.
Insert the black test lead banana plug into the negative (COM) jack.
2.
For current measurements up to 2000μA DC, set the function switch
to the μA position and insert the red test lead banana plug into the
(μA) jack.
3.
For current measurements up to 200mA DC, set the function switch
to the mA range and insert the red test lead banana plug into the
(mA) jack.
4.
For current measurements up to 10A DC, set the function switch to
the A position and insert the red test lead banana plug into the 10A
jack.
5.
Press the AC/DC button until "DC" appears on the display.
6.
Remove power from the circuit under test, then open up the circuit at
the point where you wish to measure current.
7.
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.
8.
Apply power to the circuit.
9.
Read the current in the display. The display will indicate the proper
decimal point, value and symbol.
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