User Manual

UT108/109 OPERATING MANUAL
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D. Resistance Testing (see gure 7)
Warning
To avoid damages to the Meter or to the devices under test, disconnect circuit
power and discharge all the high-voltage capacitors before measuring resistance.
To avoid harm to yourselves, never attempt to input an effective voltage over 60V in
DC or 30V in AC.
To measure resistance, connect the Meter as follows:
1. Insert the red test lead into the Ω terminal and the black test lead into the COM
terminal.
2. Set the rotary switch to an appropriate measurement position in Ω range then press
BLUE button to select resistance measurement mode.
3. Connect the test leads across with the object being measured.
The measured value shows on the display.
Note
● When there is no input, for example in open circuit condition, the Meter displays “OL”.
● When the resistance reading≥0.5Ωin the short-circuit condition, please check for
loose test leads or other reasons.
● For high resistance (>1MΩ), it is normal taking several seconds to obtain a stable