MN25 Version 2.2 Aug 2003
13
Diode Test
1. Insert the black test lead banana plug into the negative COM
jack and the red test lead banana plug into the positive
diode jack.
2. Turn the rotary switch to the position.
3. Touch the test probes to the diode under test. Forward
voltage will indicate 400 to 700mV. Reverse voltage will
indicate “I”. Shorted devices will indicate near 0mV. Shorted
devices will indicate near 0mV and an open device will
indicate “I” in both polarities.
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 position.
2. Insert the black lead banana plug into the negative (COM)
jack
Insert the red test lead banana plug into the positive (Ω)
jack.
3. Touch the test probe tips to the circuit or wire you wish to
check.
4. If the resistance is less than approximately 30Ω, the audible
signal will sound. If the circuit is open, the display will
indicate “1”.
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