Innova Digital Multimeter 10MegOhms, Owner'S Manual

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NOTE: A diode is a semiconductor device that lets cur-
rent flow in one direction only. If the diode to be tested is
part of a circuit (with other electronic components), you
must isolate it from the other components by discon-
necting at least one side of it from the circuit before
testing. A good diode will show a low voltage drop
across its junction (0.5-0.8 volts for a silicon diode or
about 0.3V for a germanium diode) when the leads are
connected in one polarity and a very high resistance
(or open circuit) when the leads are reversed (con-
nected in the opposite polarity).
1. Plug the RED test lead into the jack of the multimeter;
plug the BLACK test lead into the "COM" jack.
2. Set the meter’s Function/Range Selector Switch to the
position (see Controls and Indicators, Item 4).
3. Place the RED test lead onto one side of the diode being
tested and the BLACK test lead onto the other side.
4. Read the results on the display.
5. Reverse the test leads and again read the results on the dis-
play. Compare the two readings. One reading should indi-
cate a voltage drop value; the other reading should indicate
an overrange (1) condition.
See note above.
D. CONTINUITY TEST
1. Plug the RED test lead into the jack of the multimeter;
plug the BLACK test lead into the "COM" jack.
2. Set the meter’s Function/Range Selector Switch to the
position (see Controls and Indicators, Item 5).
3. Place the RED Test Lead to one end of the wire or device
being tested for continuity and the BLACK Test Lead to the
opposite end.
4. Listen to the sound of the beeper and confirm the results by
reading the display.
NOTE: The beeper will sound only if the continuity of
the item under test (resistance between the two test
leads) measures less than approximately 50 ohms.
8
E
WARNING
To avoid electric shock, shut off the power to the test arti-
cle before testing it for continuity.