How to use multimeter resistance
The use of digital multimeter resistance file is very simple, the measurement of resistance, first according to the size of the measured resistance will be the range switch to the appropriate position of the resistance file, and the red and black pens were inserted into the multimeter's VΩHz holes and COM holes, and then the red and black pens were contacted with the resistor's two pins, then the readings shown on the display that is, for the resistance of the resistance to be measured (now a lot of digital multimeters can also be displayed). (Now many digital multimeters can also display the unit of the measured resistance is how many Ω or KΩ).
Digital multimeter to measure a 51 Ω, the error of 1% of the metal film resistor, the display of the resistance value of 51.24Ω.
By the way, many digital multimeter 200 Ω file in the two pens shorted, will show a zero point a few Ω reading, this will bring a large measurement error in the measurement of small resistors, so the measurement of more than ten Ω below the small resistance, in order to improve the accuracy of the measurement, the general should be the actual display of the resistance value minus two pens shorted when the multimeter shows the value of the resistance.
Normal digital multimeter 200Ω file short circuit resistance, the figure shows the reading of 0.42Ω (this reading is the multimeter pen and range switch internal copper contact resistance, and its size is changing). Assuming a 1Ω resistance is measured, the actual displayed reading may be 1.42Ω.
Resistance file has a problem with the digital multimeter, its 200 Ω file in the two pens shorted, the display of the resistance value of up to 12.5 Ω, for such a multimeter, in the measurement of more than 10 Ω below the small resistance, the measurement error is quite large!
