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4.2.
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.
4.2.1.
set the function switch to the highest V Ac position.
4.2.2.
insert the black test lead banana plug into the negative (com) jack. insert red test lead banana plug into the positive (V) jack.
4.2.3.
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.
4.2.4.
read the voltage in the display. reset the function switch to successively lower V Ac positions to obtain a higher resolution reading.
the display will indicate the proper decimal point and value
4.3.
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.
4.3.1.
insert the black test lead banana plug into the negative (com) jack.
4.3.2.
for current measurements up to 200mA dc, set the function switch to the highest dc mA position and insert the red test lead banana
plug into the (mA) jack.
4.3.3.
for current measurements up to 10A dc, set the function switch to the 10A range and insert the red test lead banana plug into the (10A)
jack.
4.3.4.
remove power from the circuit under test, then open up the circuit at the point where you wish to measure current.
4.3.5.
connect test leads in series with the circuit under measurement.
4.3.6.
Apply power to the circuit.
4.3.7.
read the current in the display. for mA dc measurements, reset the function switch to successively lower mA dc positions to obtain a
higher resolution reading. the display will indicate the proper decimal point and value.
4.4.
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 the line cords.
4.4.1.
Set the function switch to the highest Ω position.
4.4.2.
insert the black test lead banana plug into the negative (com) jack. insert the red test lead banana plug into the positive Ω jack.
4.4.3.
touch the test probe tips across the circuit or component under test. it is best to disconnect one side of the component under test so
the rest of the circuit will not interfere with the resistance reading.
4.4.4.
Read the resistance in the display and then set the function switch to the lowest Ω position that is greater than the actual or any
anticipated resistance. the display will indicate the proper decimal point and value.
4.5.
continuitY cHecK
WArninG! to avoid electric shock, never measure continuity on circuits or wires that have voltage on them.
‰
4.5.1.
Set the function switch to the / •))) position.
4.5.2.
Insert the black lead banana plug into the negative (COM) jack. Insert the red test lead banana plug into the positive (Ω) jack.
4.5.3.
touch the test probe tips to the circuit or wire you wish to check.
4.5.4.
If the resistance is less than approximately 30Ω, the audible signal will sound. If the circuit is open, the display will indicate "I".
4.6.
diode test
4.6.1.
insert the black test lead banana plug into the negative com jack and the red test lead banana plug into the positive diode jack.
4.6.2.
Turn the rotary switch to the / •))) position.
4.6.3.
touch the test probes to the diode under test. forward voltage will indicate 400 to 700mV. reverse voltage will indicate "i".
shorted devices will indicate near 0mV. shorted devices will indicate near 0mV and an open device will indicate "i" in both polarities.
4.7.
BAtterY test
4.7.1.
insert the black test lead banana plug into the negative com jack and the red test lead banana plug into the positive V jack.
4.7.2.
select the 1.5V or 9V BAt position using the rotary switch.
4.7.3.
connect the red test lead to the positive side of the 1.5V or 9V battery and the black test lead to the negative side of the 1.5V or 9V
battery.
4.7.4.
read the voltage in the display.
9V Battery
1.5V Battery
4.8.
non contAct VoltAGe
4.8.1.
the ncV function works on any function switch position.
4.8.2.
test the detector on a known live circuit before use. direct the top of the
multimeter very close to the voltage source.
4.8.3.
if voltage is present, the red warning light will illuminate and the
multimeter will buzz.
© Jack sealey limited
Good
>8.2V
>1.35V
Original Language Version
Weak
7.2 to 8.2V
1.22 to 1.35V
Bad
<7.2V
<1.22V
ncV
Warning
light
tm101 | issue 3 12/10/16
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