How to read digital multimeter

If you set it incorrectly, you will probably see the meter screen change and . Connect the multimeter to the circuit. Insert the black probe into the common terminal and the red probe into the terminal marked for measuring volts and ohms. The terminal may also be marked for testing diodes.

Twist the selector knob to set the multimeter to measure resistance.

If more than one of these marks is next to the same setting , it may do both simultaneously, or you .

The beep, an audible indicator, permits technicians to focus on testing procedures without looking at the multimeter display.

When testing for continuity, a multimeter beeps based on the resistance of the component being tested. That resistance is determined by the range setting of the multimeter. You can also use it for checking continuity of wires and fuses. If you like to DIY, do car maintenance or troubleshoot electronic or electrical equipment, . DC, AC, Current, Voltage, Resistane, hfe of transistor. If voltage in the circuit is unknown, set the range to the highest voltage setting and set the dial on ṽ. Note: Most multimeters power up in Autorange mode.

Most electricians today use digital multimeters. The display also alerts you to any pertinent symbols and warnings. The dial of the DMM allows you to select the function you want to measure. Be aware that most multimeters will only measure extremely small amounts of current, in the uA and mA ranges.

These are values of current that flow only in the most delicate electronic circuits, and are literally thousands (and even millions) of . Some digital multimeters (DMMs) also include mV. First insert the black probe into the COM jack. Warning: A good capacitor stores an electrical charge and may remain energized after power is removed. Before touching it or taking a . Determine if the current to be measured is ac or dc.

You simply dial the proper function and scale, touch the two test leads to the wiring or device in question and check the meter reading. Depending on the setting , the multimeter will tell if you have . This multimeter is able to measure current. Multimeters are generally not autoranging.

Digital Multimeters , DMMs are an essential tool for the electronics engineer. A digital ohmmeter (or ohm meter ) is useful for measuring circuit resistance in electrical components. Digital ohm meters are far easier to read and use than their analog counterparts.