DIGITAL MULTIMETER
OPERATING INSTRUCTION
4.17 MEASURING CAPACITANCE
WARNING
Beware of Electrocution.
To avoid electric shock, make sure that the
capacitors have been fully discharged before
measuring the capacitance of a capacitor.
4.17.1 Plug the black test lead into the COM jack and the
red test lead into the
jack.
4.17.2 Set the rotary selector to the
Ω
range position.
4.17.3 After fully discharged the capacitor, connect the test
leads to the two ends of the capacitor for
measurement.
4.17.4 Take the reading on the main indicator of the LCD.
NOTE:
1) It may take some time (about 30 seconds for the 200
µ
F
range) for steady readings when measuring high
capacity.
2) Sometimes a reading may appear when the circuit is
open. In such case, press the “REL” button to reset
the reading and take measurement again.
4.18 TESTING DIODE
4.18.1 Plug the black test lead into the COM jack and the
red test lead into the
jack.
4.18.2 Set the rotary selector to the
Ω
range position.
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DIGITAL MULTIMETER
OPERATING INSTRUCTION
4.18.3 Press the "SELECT" button to switch to
test.
4.18.4 Connect the red test lead to the anode and the black
test lead to the cathode of the diode for testing.
4.18.5 Take the reading on the main indicator of the LCD.
NOTE:
1) The meter will show the approximate forward voltage
drop of the diode.
2) When the test leads have been reversed or open, ‘OL’
will appear on the LCD.
4.19 TESTING CONTINUITY
WARNING
Beware of Electrocution.
Make sure that the power of the circuit has been
turned off and the capacitors have been fully
discharged before testing the continuity of a circuit.
4.19.1 Plug the black test lead into the COM jack and the
red test lead into the
Ω
jack.
4.19.2 Set the rotary selector to the
Ω
range position.
4.19.3 Press the “SELECT” button to switch to
for
continuity test.
4.19.4 Connect the test leads to the two ends of the circuit
for measurement.
4.19.5 If the resistance of the circuit being tested is less than
40
Ω
, the built-in buzzer will sound.
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