9
Diode Tests
1. Set the Function/Range switch to
W
W
W
W
W
/
/
position.
2. Remove power from the equipment under test.
3. To toggle the
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/continity/diode/capacitance modes, press SELECT switch.
4. Touch probes to the diode. A forward-voltage drop is about 0.6V (typical for
a silicon diode).
5. Reverse probes. If the diode is good, "OL" is displayed. If the diode is shorted,
".000" or another number is displayed.
6. If the diode is open, "OL" is displayed, in both directions.
7. If the junction is measured in a circuit and a low reading is obtained with both
lead connections, the junction may be shunted by a resistance of less than
1k
W
. In this case the diode must be disconnected from the circuit for accurate
testing.
Continuity Measurements
1. Set the Function/Range switch to
W
W
W
W
W
/
/
position.
2. Remove power from the equipment under test.
3. To toggle the
W
/continity/diode/capacitance modes, press SELECT switch.
4. Connect the test leads to the two points at which continuity is to be tested. The
buzzer will sound if the resistance is less than approximately 100
W
.
