Compare analog & digital multimeter.
Analog multimeter
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Digital multimeter
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1. Power supply is not required
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1. Power supply is required
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2. Less suffered from electric noise
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2. Suffered from electric noise.
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3. It provides measurement in analog form with metal pointer. |
3. It provides measurement in digital form using digits as per resolution needed.
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4.It uses simple display with markings for various ranges as per R, V and I measurements.
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4. It uses LCD display.
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5. It does not require ADC converter i.e. analog to digital converter
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5. It requires ADC converter and quantity to be displayed is in digital form.
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6. Accuracy of measurement is lower
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6. Accuracy of measurement is higher
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7. Input resistance vary as per range to be measured.
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7. Input resistance is constant for all ranges.
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8. Simple & rugged in construction
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8. Complicated & delicate in construction
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9. Bigger in size
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9. Compact in size
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10. Economical
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10.Expensive
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Analog multi-meter
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DMM
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Power supply is not required
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Power supply is required
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Less suffered from electric noise
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More suffered from electric Noise
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Less isolation problems.
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More isolation problems.
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Less accuracy
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High accuracy is obtained
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Simple construction
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Complicated construction
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Bigger in size
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Smaller in size
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Many times O/P is ambiguous
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An unambiguous reading is obtained.
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Better visual indication
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Visual indication is not that much better.
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Less cost
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More cost
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