6
3. Resistance precision testing
Please clear the insulation layer and the oxidation layer on the
surface of the object to be measured before test.
Do not perform live test for resistance or DC low resistance. Live
test may damage the meter.
Test clips may be oxidized after they are used for a long time. To
ensure good contact of clips, please clear the oxide and the foreign
object at the clips.
Make sure the connection between test leads and tester/measured
object are reliable.
Component heat during test may cause error, thus it is
recommended to perform test for 30 seconds, with testing interval
at 30 seconds.
If the symbol “OL” appears during test, it indicates the resistance
between measured points exceeds the range. Please restart the
meter and then retest to troubleshoot fault caused by overload
protection, if the fault is caused by overload protection, it indicates
the measured resistor is energized, please de-energized the
measured resistor immediately and restart the meter for retesting.
Or please check if poor contact of test leads occurs (the circuit
between measured points may be open).
Measure resistance by connecting the meter with the resistor
Measured resistor RX
Black
Red
Summary of Contents for UT620C
Page 1: ...110401111444X ...
