The function of adjusting the potentiometer inside the multimeter
Digital multimeters can be used to measure AC and DC voltage, AC and DC current, resistance, capacitance and frequency. The main points of its use are as follows:
1. Test line position: connect the black test lead to the public ground, and connect the red test lead to the side jack. Among them - 10A current test socket, less than 400mA current test socket, - test sockets for voltage, resistance and frequency other than current.
2. Turn the function changeover switch to the desired position, turn the switch clockwise from OFF (closed state), and perform DC voltage (DC) test, AC voltage (AC) test, resistance test, diode test, on-off test, Capacitance test, frequency test, triode test, current test, mA current test, high current test.
3. Measurement results and test units are displayed on the 1-LCD display.
The repair of digital multimeter wrongly measuring high voltage and not displaying
Replace the insurance first. If it is not good, you should find the manufacturer for after-sales maintenance. If the service is good, go to the official website to check the information.
It is estimated that the motherboard chip is burnt out, and it is out of warranty, so replace it with a new one, and contact the after-sales service first.
What is the reason why the buzzer and resistance files of the multimeter cannot be zeroed?
If it is a very small value, it can be ignored, the resistance value of the test pen itself plus the contact resistance value.
If you want to remove these errors, press the REL key on the top while shorting, this can remove the errors, also called relative measurement.
The function of adjusting the potentiometer inside the multimeter and the maintenance of the multimeter are introduced here! Thanks for reading everyone! Hope to be helpful to everyone!
