Digital Multimeter is an electronic test equipment which measures the AC/DC voltage and provides the reading in digital numeric mode. It has successfully replaced its age old counterpart , Analog multi-meter, which provides the reading with a pointing needle on a fixed scale. This test equipment may be used to measure the continuity of wire/circuit too.
The biggest advantage of a Digital Multi-meter is its numeric reading as it decreases the chances of reading-errors on the scale (parallaxing) from a human-eye. In addition to that , it also boosts the reading-speed and its digital reading/value can be recorded as well as used as a feed for other devices.
The digital multimeter is commonly available in various voltage levels (AC & DC both), current levels and resistance levels depending on your requirement and costing from mere bucks to thousands of it.
How to use a Digital Multi-meter for:
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Measuring Voltage.
- Choose the suitable task by the selector knob as AC/DC and voltage (V) Section.
- Then select the necessary range by the selector knob. Always select the range more than the voltage to be measured.
- Connect the probe with the multi-meter and place it to the i/p marked with polarity (i.e the plus and minus sign).
- Use High Voltage probe, if you have to measure voltage beyond 1KV.
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Measuring Current.
- Choose the suitable task by the selector knob as AC/DC and current (A) Section.
- Then select the necessary range by the selector knob. Always select the range more than the current to be measured.
- If you are measuring a current below 02 Amps, Connect the probe with the multi-meter and place it to the i/p marked with polarity plus and minus sign. For measuring a current from 2-10 Amps, the probe’s high i/p is to be connected to the 10A probe point.
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Resistance Measurement
- Choose the suitable task by the selector knob as “OHM” Section.
- Then select the necessary range by the selector knob. Always select the range near to the resistance value.
- Connect the probe with the multi-meter and place it to the i/p marked with polarity (i.e the plus and minus sign).
 displays measurement of DC and AC voltages as discrete numerals instead of a pointer deflection on a continuous scale.){kind=link}
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