EX430A-en-GB_v6.0 7/16
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CONTINUITY CHECK
WARNING: To avoid electric shock, never measure continuity on circuits or wires that have
voltage on them.
1. Set the function switch to the green position.
2. Insert the black lead banana plug into the negative COM jack.
Insert the red test lead banana plug into the positive jack.
3. Press the SELECT button to indicate on the display.
4. Touch the test probe tips to the circuit or wire you wish to check.
5. If the resistance is less than approximately 150, the audible signal will
sound. If the circuit is open, the display will indicate “OL”.
DIODE TEST
1. Set the function switch to the green position.
2. Insert the black test lead banana plug into the negative COM jack and the red test lead banana
plug into the positive diode jack.
3. Press the SELECT button to indicate on the display.
4. Touch the test probes to the diode under test. Forward voltage will
typically indicate 0.400 to 0.700V. Reverse voltage will indicate
“OL”. Shorted devices will indicate near 0V and an open device will
indicate “OL” in both polarities.
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