MMD 540H Hybrid Multimeter Meter Functions 15
Meter Functions – Diode Check ( |
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IMPORTANT: Turn the power OFF to |
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the test circuit |
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Ñ Select the Diode Check “ |
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function with the rotary switch and |
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mode button. |
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Insert: |
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Ñ Black lead in COM terminal. |
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Ñ Red lead in |
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Touch the Black test probe to the |
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negative |
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Touch the Red test probe to the |
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positive (+) side of the diode. Reverse |
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the probes: Black to the positive (+) |
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side and Red to the negative |
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NOTE: A “good” diode will read low |
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in one `direction and high in the |
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other direction when the probes are |
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reversed (or vice versa). |
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| Black– | Red+ | ||
A defective diode will have the same |
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reading in both directions or read |
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between 1.0 to 3.0 V. in both directions. |
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Diode
- to +
Reverse Probes
+ to -
Good | .4 to .9V | OL | |
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OL | .4 to .9V | ||
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| OL | 1.0 to 3.0V | |
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| 1.0 to 3.0V | OL | |
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Bad | .4 to .9V | .4 to .9V | |
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| OL | OL | |
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| .000V | .000V | |
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MMD 540H Instruction Manual Version 1 February 2008 | Robert Bosch LLC |
