Differences
This shows you the differences between two versions of the page.
Both sides previous revisionPrevious revisionNext revision | Previous revisionNext revisionBoth sides next revision | ||
benchtop:dmm [2020/03/06 14:32] – 128.61.124.70 | benchtop:dmm [2020/03/06 14:50] – 128.61.124.70 | ||
---|---|---|---|
Line 1: | Line 1: | ||
- | =====Digital Multimeter===== | + | ======Digital Multimeter====== |
+ | {{ benchtop: | ||
A digital multimeter (DMM) is a device that can measure voltage, current, and resistance. Unlike an oscilloscope, | A digital multimeter (DMM) is a device that can measure voltage, current, and resistance. Unlike an oscilloscope, | ||
- | {{ benchtop: | + | * DC Voltage |
+ | * AC Voltage (RMS) | ||
+ | * DC Current | ||
+ | * AC Current (RMS) | ||
+ | * Resistance | ||
+ | * Capacitance | ||
+ | In addition, a multimeter can be used for continuity and diode testing. | ||
+ | |||
+ | ====Basic Operation==== | ||
+ | The front panel of a multimeter is shown. The screen displays the value of the measurement, | ||
+ | |||
+ | ===Connecting Probes to the Multimeter=== | ||
+ | There are two types of probes at the IDC that can be used to take measurements. Test probes (left) need to be held on the circuit being measured, so they are best for quick measurements. Banana plugs (right) can be connected to alligator clips, which can be secured to a wire in a circuit. Both types of probes are connected to the multimeter in the same way. | ||
+ | |||
+ | The probes must be connected to the correct inputs on the multimeter. For voltage, resistance, and capacitance, | ||
+ | |||
+ | For current, the probes must be connected differently, | ||
+ | |||
+ | |||
+ | ===Selecting the Measurement Type=== | ||
+ | Once the probes are properly connected, you need to select a measurement type by clicking one of the buttons shown below. DCV means DC volts, ACV means AC volts (this is an RMS voltage), and Ω2W signifies resistance. You can select capacitance by clicking **[Shift]** **[Freq]**, which corresponds to the capacitor symbol above the **[Freq]** button. For current measurements, | ||
+ | |||
+ | |||
+ |