Why not use the multimeter to directly measure the internal resistance of the instrument?
The multimeter is also called the multiplex table, the multimeter, the three meter, the multiplication table and so on. It is an indispensable measuring instrument in the electric power and electronic departments. It is mainly used to measure the voltage, current and resistance. The multimeter is divided into a pointer multimeter and a digital multimeter according to the display mode. Is a multifunctional measuring instrument, multi range, general multimeter can measure DC current, DC voltage, AC current, AC voltage, resistance and audio level, some parameters can also be measured AC current, capacitance, inductance and semiconductor (such as beta) etc..
There is a certain friction between the shaft and the shaft tip eye instrument, if she will make the local callback error curve of anomalous instrument calibration, and even makes the error variable (+ / -).
Can not use a multimeter resistance profile directly measuring instrument internal resistance, but will be measured is the internal resistance of what kind of instrument, the key is to use a multimeter resistance profile measuring instrument panel, multimeter output current, X1 output to X10 file dozens of 100mA; several output to 10mA; X100 file output to 1mA and hundreds of microamperes; such a large current can cause damage of the damage to some instruments, such as a table, milliammeters, do not use a multimeter resistance profile for direct measurement of the internal resistance.
