How to calibrate a multimeter?
A: Like other measuring instruments, the multimeter is calibrated by the manufacturer when it leaves the factory, so if there is no major obvious problem, please do not adjust it at will. The head of the current multimeter is generally a voltmeter, so when you want to calibrate other gears, you must first adjust the DC voltage gear, which is called the basic gear by industry insiders. Every gear and every function (except resistance gear) may be out of alignment. Generally, a multimeter will set one potentiometer (such as DC voltage file) or multiple potentiometers (such as temperature file) in each function, and some have no potentiometer (such as resistance file). If there is a potentiometer, it is easy to handle, input the detection signal, and then adjust it directly; if there is no potentiometer, it will not be out of alignment.
