1. Use of Multimeter
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2. Outlook of Multimeter Pointer and Scale Selection Switch
single pointer with different scale for different measurements
Selection Switch
select to measure voltage (ac or dc), current or resistance.
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3. Reading from Multimeter
As the Selection Switch is at DC25mA, the multimeter is used as a ammeter with fsd 25mA.
The 250A scale is used.
Reading = 17.5mA
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4. Using as an Ohmmeter
With the input terminals shorted, set zero by turning the 0 Adjust Knob.
Remember to set zero again if the ohmmeter range is changed.
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5. Reading from Multimeter
As the Selection Switch is at x10, the reading has to be multiplied by 10.
The reading is 90, so the resistance is 900  .
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6. Measuring AC Voltage
If AC voltage is measured, remember to use the “output “ terminal instead of the “positive” terminal.
The “negative” terminal is still used.
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7. Digital Multimeter
Same as analogue multimeter but it has the advantage of having a large internal resistance.
If the reading is larger than the range, the reading cannot be shown.
The “COM” terminal is always used. The other terminal can be “10A”, “AmA”, “V” depending on the measurement.
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8. Digital Ohmmeter
In the figure shown, the resistance of the resistor is 0.824k.
There is no need to multiplied 2k for digital ohmmeter as it is the range, but not the conversion factor.
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9. Measuring AC/DC
Make sure that the switch is switched to the correct side for DC or AC measurement. AC DC
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