Diode Test - Extech Instruments MA61 User Manual

Diode Test
1. Insert the black test lead banana plug into the negative COM jack and the red test
lead banana plug into the
2. Turn the function switch to
button to select the diode function if necessary (the diode and
voltage symbols 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.
4.
If both readings are very small or '0', the device is shorted.
positive jack.
position. Use the MODE
12
Fig‐9 DIODE TEST
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