1. Before measuring the multimeter, it is necessary to perform the mechanical zero adjustment of the multimeter, that is, before the measurement, let the pointer of the multimeter be in a place of zero voltage or zero current.
2. During the measurement process of the multimeter, the metal position of the test lead is charged, try not to touch it, otherwise the danger of electric shock will easily occur, causing unnecessary trouble, and the measured data is also inaccurate .
3. When using a multimeter to measure a certain amount of electricity, if it is found that the measured value is too small or too large, it needs to be disconnected before changing the gear. Do not adjust the gear while measuring, otherwise It is easy to damage the multimeter, and if the data is measured later, it will bring inaccuracy.
4. When the multimeter is in use, it is also necessary to ensure that it is in a horizontal state, so as to ensure that the data error of measurement processing will be smaller. In addition, it is also necessary to avoid magnetic fields, which can interfere with the multimeter and affect the data measurement.
5. When the multimeter is used, it is necessary to turn the gear to the maximum value of the AC voltage. If you do not need to use the multimeter for a long time, take out the battery inside the multimeter to prevent the battery from corroding.
