The use of multimeter ohm gear
(1) Select the appropriate magnification. When measuring resistance with an ohmmeter, an appropriate magnification should be selected so that the pointer indicates near the median value. It is best not to use the left third of the scale, which is poorly dense.
(2) Zero adjustment before use.
(3) Do not measure with electricity.
(4) The resistance under test cannot have a parallel branch.
(5) When measuring the equivalent resistance of polar components such as transistors and electrolytic capacitors, you must pay attention to the polarities of the two pens.
(6) When measuring the equivalent resistance of the nonlinear element with the ohm stop of different magnifications of the multimeter, the measured resistance values are not the same. This is because the median resistance and full-scale current of each gear are different. In a mechanical watch, the smaller the magnification, the smaller the measured resistance.
