15
MEASURING RESISTANCE
WARNING
•
Beware of electrocution.
•
When measuring in-circuit resistance, make sure that the power of the circuit
under test has been turned off and that all capacitors have been fully discharged.
•
Plug the black test lead into the
COM
jack and the red test
lead into the
INPUT
jack.
•
Set the rotary selector to the range position to ensure that
the meter goes into ‘
Ω
’ range.
•
Connect the test leads to the ends of the resistor or circuit
for measurement.
•
Take the reading on the LCD.
Note: When the input is open, the “OL” will appear on the LCD to
indicate that the range has been exceeded.
•
For measuring resistance above 1MΩ, it may take a few
seconds to get a steady reading. This is normal for high
resistance reading.
TESTING DIODE
•
Plug the black test lead into the
COM
jack and the red test lead into the
INPUT
jack.
•
Set the rotary selector to the range position.
•
Press the “
SEL
” button to switch to test.
•
Connect the red test lead to the anode and the black test lead to the cathode of
the diode for testing.
•
Take the reading on the LCD.
Note: The meter will show the approximate forward voltage drop of the diode.
When the test leads have been reversed or opened, “OL” will appear on the LCD.
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.
•
Take the reading on the LCD.
Note: If the duty cycle is less than 10%, the symbol “UL” will be displayed on the LCD.
If the duty cycle is more than 99.9%, the symbol “OL” will be displayed on the LCD.
•
The input signal frequency range is 10 - 10kHz. It is possible to test the duty cycle
of a frequency signal higher than 10kHz, but the tolerance of the test result can’t
be ensured.
•
“ ” means the maximum input voltage is 750V rms AC.
•
Plug the black test lead into the
COM
jack and the red test
lead into the
INPUT
jack.
•
Set the rotary selector to the range position.
•
Press the “
SEL
” button to switch to continuity test.
•
Connect the test leads to the two ends of the circuit for
Summary of Contents for D03128
Page 1: ...1 CLAMP METER MODEL D03128...
