Continuity Measurement - UNI-T UT90A Operating Manual

Model UT90A: OPERATING MANUAL
disconnect the connection between the
testing leads and the circuit under test.
E. Continuity Measurement(see figure 7)
Warning
To avoid injury to the user, please do not
attempt the voltage higher than 60V/DC or
30V/AC.
To avoid damages to the Meter or to the
devices under test, disconnect circuit power
and discharge all the capacitors before
measuring continuity.
To test for continuity, connect the Meter as
below:
1. Insert the red test lead into the VO
terminal and the black test lead into the
COM terminal.
2. Set the rotary switch to
test leads across with the power being
measured.
3. The resistance of a open circuit under test
is> 100O.
4. The buzzer sounds continuously if the
resistance of a circuit under test is =10O,
and that shows the circuit is well
connected.
5. The measured approximate circuit
resistance value shows on the display, the
unit O.
Note
l
To measure online capacity, please turn off
power of the circuit and discharge all
, connect the
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