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5.2.2.
Insert the black test lead plug into the negative COM jack.
Insert red test lead plug into the positive V jack.
5.2.3.
Touch the black test probe tip to the neutral side of the circuit.
Touch the red test probe tip to the "hot" side of the circuit.
5.2.4.
Read the voltage in the display.
5.2.5.
Press the HZ/% button to indicate "Hz".
5.2.6.
Read the frequency in the display.
5.2.7.
Press the Hz/% button again to indicate "%".
5.2.8.
Read the % of duty cycle in the display.
5.3.
DC CURRENT MEASUREMENTS
WARNING! DO NOT make 20A current measurements for longer than 30 seconds. Exceeding 30 seconds may cause damage to
‰
the meter and/or the test leads.
5.3.1.
Insert the black test lead plug into the negative COM jack.
5.3.2.
For current measurements up to 6000µA DC, set the function switch to the µA position and insert the red test lead plug into the µA/mA
jack.
5.3.3.
For current measurements up to 600mA DC, set the function switch to the mA position and insert the red test lead plug into the µA/mA
jack.
5.3.4.
For current measurements up to 20A DC, set the function switch to the 10A/HZ/% position and insert the red test lead plug into the
10A jack.
5.3.5.
Press the MODE button to indicate "DC" on the display.
5.3.6.
Remove power from the circuit under test, then open up the circuit at the point where you wish to measure current.
5.3.7.
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.
5.3.8.
Apply power to the circuit.
5.3.9.
Read the current in the display.
5.4.
AC CURRENT (FREQUENCY, DUTY CYCLE) MEASUREMENTS
WARNING! DO NOT make a 20A current measurements for longer than 30 seconds. Exceeding 30 seconds may cause
‰
damage to the meter and/or the test leads.
5.4.1.
Insert the black test lead plug into the negative COM jack.
5.4.2.
For current measurements up to 6000µA AC, set the function switch to the µA position and insert the red test plug into the µA/mA jack.
5.4.3.
For current measurements up to 600mA AC, set the function switch to the mA position and insert the red test lead plug into the µA/mA
jack.
5.4.4.
For current measurements up to 20A AC, set the function switch to the 10A/HZ/% position and insert the red test lead plug into the
10A jack.
5.4.5.
Press the MODE button to indicate "AC" on the display.
5.4.6.
Remove power from the circuit under test, then open up the circuit at the point where you wish to measure current.
5.4.7.
Touch the black test probe tip to the neutral side of the circuit.
Touch the red test probe tip to the "hot" side of the circuit.
5.4.8.
Apply power to the circuit.
5.4.9.
Read the current in the display.
5.5.
RESISTANCE MEASUREMENTS
WARNING! To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any
‰
resistance measurements. Remove the batteries and unplug cables.
5.5.1.
Set the function switch to the Ω CAP position.
Insert the black test lead plug into the negative COM jack.
Insert the red test lead plug into the positive Ω jack.
5.5.2.
Press the MODE button to indicate "Ω" on the display.
5.5.3.
Touch the test probe tips across the circuit or part under test. It is best to disconnect one side of the part under test so the rest of the
circuit will not interfere with the resistance reading.
5.5.4.
Read the resistance in the display.
5.6.
CONTINUITY CHECK
WARNING! To avoid electrical shock, Never measure continuity on circuits or wires that have a voltage on them.
‰
5.6.1.
Set the function switch to the
5.6.2.
Insert the black lead plug into the negative COM jack.
Insert the red test lead plug into the positive Ω jack.
5.6.3.
Press the MODE button to indicate" " and "Ω" on the display
5.6.4.
Touch the test probe tips to the circuit or wire you wish to check.
5.6.5.
If the resistance is less than approximately 50Ω, the audible signal will sound. If the circuit is open, the display will indicate "OL".
5.7.
CAPACITANCE MEASUREMENTS
WARNING! To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any capacitance
measurements. Remove the batteries and unplug the cables.
5.7.1.
Set the rotary function switch to the Ω CAP position.
5.7.2.
Insert the black test lead plug into the negative COM jack.
Insert the red test lead plug into the positive V jack.
5.7.3.
Press the MODE button to indicate "nF" on the display.
5.7.4.
Touch the test leads to the capacitor to be tested.
5.7.5.
The test may take up to 3 minutes or more for large capacitors to charge. Wait until the readings settle before ending the test.
5.7.6.
Read the capacitance value in the display.
5.8.
DIODE TEST
5.8.1.
Set the function switch to green
5.8.2.
Insert the black test banana plug into the negative COM jack and the red test iead banana plug into the positive V jack.
© Jack Sealey Limited
Ω CAP position.
Ω CAP position.
Original Language Version
MM104.V2 Issue 1 19/01/21
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