Introduction to the main displays, digits and display characteristics of digital multimeters
The number of display digits of a digital multimeter is usually 3 1/2 digits to 8 1/2 digits. There are two principles for determining the number of display digits of a digital instrument: one is that the number of digits that can display all the digits from 0-9 is the integer number; the other is that the value of the fractional digit is the highest digit in the maximum display value as the numerator, with the full scale count value of 2,000, which indicates that the instrument has three integer digits, while the numerator of the fractional digit is 1, and the denominator is 2, so it is called 3 1/2 digits, pronounced as "three and a half", and its highest digit can only display 0 or 1 (0 is usually not displayed). Bit, read as "three and a half", its highest bit can only display 0 or 1 (0 is usually not displayed).3 2/3 bit (read as "three and two-thirds bit") digital multimeter's highest bit can only display 0 ~ 2 of the number, so the maximum display value of ± 2999. In the same case, it is more than 3 2/3 bit (read as "three and two-thirds bit") digital multimeter's highest bit can only display 0 ~ 2 of the number, so the maximum display value for ± 2999. Under the same circumstances, it is 50% higher than the limit of 3 1/2 digital multimeter, especially in the measurement of 380V AC voltage is very valuable.
Popular digital multimeter generally belongs to 3 1/2 bit display handheld multimeter, 4 1/2, 5 1/2 bit (6 bit below) digital multimeter is divided into handheld, desktop two. 6 1/2 bit above most of the digital multimeter belongs to the desktop.
Digital multimeter using advanced digital display technology, display clear and intuitive, accurate reading. It can ensure the objectivity of the reading, but also in line with people's reading habits, can shorten the reading or recording time. These advantages are the traditional analogue (i.e. pointer) multimeter does not have.
