30
DIGITAL MULTIMETER
OPERATING INSTRUCTION
• If the lead connection is reversed, only figure ‘OL’ will be
displayed.
• When the input is not connected, i.e. at open circuit, the
figure ‘OL’ will be displayed.
4.19 TESTING CONTINUITY
WARNING
When testing the circuit continuity, be sure that the
power of the circuit has been shut down and all
capacitors have been discharged fully.
4.19.1 Connect the black test lead to the COM jack and the
red test lead to the INPUT jack.
4.19.2 Set the transform
switch at the range
position.
4.19.3 put down the ‘FUNC.’
transformed at
continuity test.
4.19.4 Connect test leads
across two points of the
circuit under testing.
4.19.5 If continuity exists
（ i.e., resistance less
than about 50Ω ） ,
built-in buzzer will
sound.
NOTE:
• If the input open circuit (or the circuit resistance measured
is higher than 200Ω), then the figure ’0L’ will be displayed.
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