Aktakom AMM-1009 Manuel de l'utilisateur - Page 13

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DIODE TEST

WARNING: To avoid electric shock, do not test

any diode that has voltage on it.

1. Connect the black test lead to COM jack and the

red test lead to V: jack.

2. Set the function switch to the

3. Turn off power to the circuit under test.

4. Touch probes to the diode. A forward-voltage

drop is about 0.6V(typical for a silicon diode).

5. Reverse the 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:. In this case the diode must be

disconnected from the circuit for accurate

testing.

position.