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Diode Test
WARNING: Please remove power to the circuit under test and discharge all capacitors
before taking diode measurements. Do not input voltages > 30V DC or AC to the meter.
1. Turn the function switch to the
position.
2. Use the M button to select the diode icon
.
3. Insert the black test lead banana plug into the negative (COM) jack and the red test lead
banana plug into the positive (V) jack. See Fig. 10.
4. Touch the test probes to the diode under test, in both polarity directions, one at a time.
5. Forward voltage will indicate 0.5 to 0.8V.
6. Reverse voltage will indicate “OL”.
7. Shorted devices will indicate a reading close to ‘0’ ohms and the meter will beep.
8. An open device will indicate ‘OL’ in both directions.
Fig. 10 – Diode Testing
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