Iso-Tech IDM 97, Instruction Manual

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3.6 Diode testing
1. Turn the function switch to " ".
2. Plug the black lead into the "COM" input terminal and the red lead into the "V -
è
- " input terminal.
3. Connect the probes to the diode to be tested. With a non-faulty silicon diode, the voltage shown in the forward direction
will be between 0.400 and 0.900V. When the diode being tested is faulty, "000" (short-circuit) or OL (open circuit) will be
shown.
4.
When tested in the opposite direction (blocking direction), "000" or a different value will appear for a faulty diode.