Digital multimeter and pointer multimeter that are highly resistant to interference
Say I feel, the earliest I use the pointer multimeter, use, such as resistance file sometimes need to adjust the zero, measuring voltage, first by the high-grade level to start measuring, in order to prevent burning the table, in addition, the measurement also need to put the smooth, read the value of the line of sight should be perpendicular to the surface of the dial. It is subject to human and environmental interference.
On the contrary, the digital multimeter does not have the above shortcomings, and the input impedance is large, do not worry about burning the meter.
But the pointer multimeter, there is an advantage of measuring parameters intuitive.
Digital multimeter on the use of environmental requirements are relatively low, applicable to a wide range of anti-interference ability, see the parameters intuitive.
Analogue multimeter is larger, inconvenient to carry, high requirements for the use of the environment, anti-interference ability is poor, see the readings is not convenient, but the accuracy is higher.
Anti-interference ability is of course pointer multimeter is better, digital multimeter measurement of some electrical parameters such as inverters within certain points of voltage readings will jump, no way to read, pointer multimeter does not have this problem, but the degree of accuracy and ease of use than the degree of digital table is poor. In short, the two have their own advantages and shortcomings.
Pointer type table has two kinds of internal and external magnetism, by the influence of static electricity error is too large, do not believe you in the dial glass on the hands of the needle will not return o the digital table is good to use a point, but each has its own strengths and weaknesses.
