Major tech MT1887 Manuel de l'utilisateur - Page 7
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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.
1.
Set the function switch to the green
2.
Insert the black test lead banana plug
Insert the red test lead banana plug into the
3.
Press the MODE button to indicate
4.
Touch the test probe tips across the
best to disconnect one side of the part
circuit will not interfere with the resistance
5.
Read the resistance in the display.
CONTINUITY CHECK
WARNING: To avoid electric shock, never measure continuity on circuits or wires that have
voltage on them.
1.
Set the function switch to the green
2.
Insert the black lead banana plug into
Insert the red test lead banana plug into the
3.
Press the MODE button to
display
4.
Touch the test probe tips to the circuit
5.
If the resistance is less than
signal will sound. If the circuit is open, the display will indicate "OL".
DIODE TEST
Set the function switch to the green Ω
1.
2.
Insert the black test lead banana plug
and the red test lead banana plug into the
3.
Press the MODE button to indicate
display.
Touch the test probes to the diode under test.
4.
indicate 0.400 to 0.700V. Reverse voltage will
will indicate near 0V and an open device will
ΩCAP position.
into the negative COM jack.
positive jack.
""on the display.
circuit or part under test. It is
under test so the rest of the
reading.
Ω CAP
position.
the negative COM jack.
positive jack.
indicate"
or wire you wish to check.
approximately 35, the audible
CAP
position.
into the negative COM jack
positive V jack.
" " and "V"
Forward voltage will typically
indicate "OL". Shorted devices
indicate "OL" in both polarities.
Ω" on the