Iso-Tech IDM 91E Manuel D'instructions page 18

3-5 Diode Check
1. Set the rotary switch to the "
2. Connect the black test lead to the "COM" terminal and the red test lead to the "V
3. Connect the test lead to the diode. Normally the forward voltage drop of good silicon diode is shown
between .500V and .900V. If the diode under test is defective, "000" (short circuit) or "1" (non-conductance) is
displayed. Reverse check of diode: If the diode under test is good "1" is displayed. If the diode under test is
defective "000" or other values are displayed.
3-6 Continuity Check by sounder
1. Set the rotary switch at the "
2. Connect the black test lead to "COM" terminal and the red test lead to "V
3. Connect test leads to the circuit under test.
4. Built-in sounder operates if the resistance in the circuit under test is below 50
" position.
" position.
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" input terminal.
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" input terminal.
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