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NOTE:
1) If the duty cycle is less than 10%, symbol 'UL' will be
displayed on LCD; if the duty cycle is more than
99.9%, symbol 'OL' will be displayed on LCD.
2) The input signal frequency range is 10-10 kHz. It is
possible to test duty cycle of the higher than 10 kHz
frequency signal, but the tolerance of the test result
can not be ensure.
3) “ ” means the maximum input voltage is 600V rms AC.
4.15 Measuring Resistance
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.
WARNING
4.15.1 Plug the black test lead into the COM jack and
the red test lead into the INPUT jack.
4.15.2 Set the rotary selector to the range position
to make the meter get into Ω range.
4.15.3 Connect the test leads to the ends of the resistor
or circuit for measurement.
4.15.4 Take the reading on the LCD.
1) When the input is open, 'OL' will appear on the LCD
to indicate that the range has been exceeded.
2) For measuring resistance above 1MΩ, it may take a
few seconds to get a steady reading. This is normal
for high resistance reading.
NOTE:
4.16 Testing Diode
4.16.1 Plug the black test lead into the COM jack and
the red test lead into the INPUT jack.
4.16.2 Set the rotary selector to the range position.
4.16.3 Press the "SEL" button to switch to test.
4.16.4 Connect the red test lead to the anode and the
black test lead to the cathode of the diode for
testing.
4.16.5 Take the reading on 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.
Ω
Ω
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