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Stap 15
Place one probe at each end of the circuit or component you want to test. It doesn't matter which probe goes where; resistance is non-directional.
  • Place one probe at each end of the circuit or component you want to test.

  • It doesn't matter which probe goes where; resistance is non-directional.

  • If your multimeter reads close to zero, the range is set too high for a good measurement. Turn the dial to a lower setting.

  • If you set the range too low, the multimeter simply reads 1 or OL, indicating that it is overloaded or out of range. This won't hurt the multimeter, but we need to set the dial to a higher range.

  • The other possibility is that the circuit or component you are testing doesn't have continuity—that is, it has infinite resistance. A non continuous circuit will always read 1 or OL on a resistance test.

在两根表笔之间放入您想测试的电路或电子元件。

表笔放置的位置正反无所谓,因为电阻没有方向。

如果万用表的读书是0,那么说明测试区间设置过高。请将旋钮转向低一点的区间。

如果设置的测试范围过低,万用表会显示1或者 OL,表明电路过载或者超过测试范围。此时万用表不会受到损伤,但是我们需要将万用表调到更高的测试区间。

另一种可能性是待测电路或电子元件中间有断路导致电阻无限大。断路也会导致万用表在测试电阻时候显示1或者 OL。

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