User Manual

UT108/109 OPERATING MANUAL
34
Note
● In a circuit, a good diode should still produce a forward voltage drop reading of 0.5V
to 0.8V; However, the reverse voltage drop reading can vary depending on the
resistance of other pathways between the probe tips.
Connect the test leads to the proper terminals as said above to avoid error display.
● The LCD will display “OL” indicating open-circuit or wrong polarity connection.
● When diode testing has been completed, disconnect the connection between the
testing leads and the circuit under test.