The pointer type multimeter has high sensitivity, fast response speed, and the process of pointer swing is relatively intuitive, and its swing speed can sometimes reflect the measured size objectively, but the reading accuracy is poor.
The accuracy of the digital multimeter is related to the A/D chip. The digital multimeter is equipped with an integrated operational amplifier circuit. By sampling the components and equipment under test, the test results are input into the internal A/D converter, counter, and logic. After the operation of the operation circuit, it is displayed in the display window. The real-time performance is worse than that of the pointer multimeter, but the reading is convenient and the accuracy is high. It is used according to personal needs.
