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Diode Test
1. Set the function switch to position.
2. Press the
RANGE
/ / button until the symbol appears in the
display.
3. Insert the black test lead banana plug into the negative (-) jack
COM
and the red test lead banana plug into the positive (+) jack
Ω
.
4. Touch the test probe tips to the diode or semiconductor junction you
wish to test. Note the meter reading
5. Reverse the probe polarity by switching probe position. Note this read-
ing.
6. The diode or junction can be evaluated as follows:
A. If one reading shows a value and the other reading shows OL, the
diode is good.
B. If both readings show OL, the device is open.
C. If both readings are very small or 0, the device is shorted.
WARNING:
To avoid electric shock, do not test any diode that has
voltage on it.
NOTE:
The value indicated in the display during the diode check is the
forward voltage.
Frequency/Duty Cycle Measurements
1. Set the rotary function switch to the “Hz %” position.
2. Insert the black lead banana plug into the negative
COM
jack and the
red test lead banana plug into the positive
Hz
jack.
3. Touch the test probe tips to the circuit under test.
4. Read the frequency on the display.
5. Press the Hz/% button again to indicate “%” on the display.
6. Read the % of duty cycle on the display.
