Continuity Measurements; Diode Test - Extech Instruments EX710 User Manual

Continuity Measurements

1. Insert the black test lead into the negative COM terminal and the red test lead into the
V·Ω·CAP·Hz·
2. Set the function switch to the
3. Use the MODE button to select continuity "
button is pressed.
4. Touch the test probe tips across the circuit or component under test.
5. If the resistance is < 40Ω, a tone will sound.

Diode Test

1. Insert the black test lead banana plug into the negative COM jack and the red test lead banana
plug into the V·Ω·CAP·Hz·
2. Turn the function switch to
necessary (diode symbol will appear on the LCD when in Diode test mode)
3. Touch the test probe tips to the diode or semiconductor junction under test. Note the meter
reading
4. Reverse the test lead polarity by reversing the red and black leads. Note this reading
5. The diode or junction can be evaluated as follows:
•
If one reading displays a value (typically 0.400V to 0.900V) and the other reading
displays OL, the diode is good.
•
If both readings display OL the device is open.
•
If both readings are very small or '0', the device is shorted.
positive terminal.
position.
)
)
•)
positive jack
position. Use the MODE button to select the diode function if
. The display icons will change when the MODE
)"
)
•)
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