Diode Test; Frequency Measurements - Craftsman 82170 Owner's Manual

DIODE TEST

WARNING: To avoid electric shock, do not test any diode that has
voltage on it.
1. Set the function switch to
2. Insert the black test lead banana plug into the negative (COM) jack.
Insert the red test lead banana plug into the positive (V) jack.
3. Touch the test probe tips to the diode or semiconductor junction you
wish to test. Note the meter reading.
4. Reverse the probe polarity by switching probe position. Note this
reading.
5. The diode or junction can be evaluated as follows:
A. If one reading shows a value and the other reading shows "1", the
diode is good.
B. If both readings show "1", the device is open.
C. If both readings are very small or 0, the device is shorted.
NOTE: The value indicated in the display during the diode check is the
forward voltage.
FREQUENCY MEASUREMENT
1. Set the function switch to the FREQ position.
2. Insert the black test lead banana plug into the negative (COM) jack.
Insert the red test lead banana plug into the positive (V/Ω) jack.
3. Touch the black test probe tip to the negative side of the circuit.
Touch the red test probe tip to the positive side of the circuit.
4. Read the frequency in the display. The digital reading will indicate the
proper decimal point, and value.
position.
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