This document provides instructions on how to use an analog multimeter. It begins by listing the lesson objectives, which are to identify the parts of an analog multimeter, perform measurements and calculations in electronics, and appreciate the importance of practical skills. It then describes the key features of an analog multimeter, including that it uses a moving coil assembly and needle pointer. The document outlines the main parts of an analog multimeter and provides step-by-step instructions on how to use one to measure resistance, voltage, and current. It includes details on properly connecting probes and selecting ranges.

1. Prepared by: Mr. John Lexter L. Emberador
Analog Multimeter

2. Lesson Objectives
At the end of the lesson, the student will
be able to:
1. Identify the different parts of analog
multimeter;
2. Perform the mensuration and calculation of
different instruments used in electronics
servicing; and
3. Appreciate the importance of the lesson as
practical skills in electronics.

3. Analog Multimeter
• It has a moving coil assembly which is
characterized by a needle pointer. The
advantage of analog multimeter over digital
multimeter is a resistance test in testing
electronic components such as capacitor and
transistor.

4. Parts of Analog Multimeter

5. Inside Analog Multimeter

6. Steps in using Analog Multimeter
1. Connect the test probe to the appropriate
jack.
• The red test probe to the (+) jack and black test
probe to the (-) COM jack.

7. Steps in using Analog Multimeter
2. Check if the pointer rests exactly at the zero
position or infinite position at ohmmeter range.

8. Steps in using Analog Multimeter
Zero Corrector
• If this occurs, you should
turn the zero-corrector screw
in counterclockwise direction
until the pointer points at
zero voltage range.
Wrong Pointer Setting
• If the pointer points not
exactly to the infinity at
ohmmeter reading, this
causes inaccuracy to the
measured value.

9. Steps in using Analog Multimeter
3. Check the accuracy of the ohmmeter by
touching two test probes.
• Set the multimeter to x1Ω or x10Ω selector
resistance range.
• Hold the two test probes simultaneously.
The pointer should not
deflect when holding
the two test probe at
x1 or x10 ohm range.

10. Steps in using Analog Multimeter
4. Check the probes if they are OK (Ohmmeter
Calibration)
a. Set the multimeter to corresponding selector
resistance range.
b. Short the two test probes lead together.
The pointer should
deflect towards zero
ohm reading.

11. Steps in using Analog Multimeter

12. Steps in using Analog Multimeter
As indicated, the pointer rests
out of the range of ohmmeter
scale. Adjust the ohm
adjustment counterclockwise
until the pointer rests at “0”
ohm reading.
If the pointer did not deflect at
all, check the probes. There is a
possibility that one is broken or
open at some point.

13. Resistance Measurement
Ohmmeter Ranges
x1kΩ
x100Ω
x10Ω
x1Ω
Minor
Divisions
Equivalent
0-2 0.2
2-10 0.5
10-20 1
20-50 2
50-100 5
100-200 20
Note: The minor divisions of
analog multimeter may vary
depending on the brand.

14. Voltage Measurement
• Set the selector knob to the proper scale
range. The chosen scale range must be higher
than the anticipated voltage to be measured.

15. AC Voltage Measurement
• In testing AC voltages, it doesn’t matter if the
test probes are interchanged.
Range
Major
Division
Minor
Division
10 2 0.2
50 10 1
250 50 5
1000 200 20

16. DC Voltage Measurement
• Be careful in testing DC voltages, especially in
polarity. Be sure that the positive test probe
(red) is conneced at the positive supply voltage
and the negative test probe (black) is
connected at the negative or common ground
of the supply voltage.

17. DC Voltage Measurement
Range
Major
Division
Minor
Division
0.1 0.02 0.002
0.25 0.05 0.005
2.5 0.5 0.05
10 2 0.2
50 10 1
250 50 5
1000 200 20

18. AC/DC Voltage Measurement

19. DC Current Measurement
• As you see, the ammeter scale is the same as
the voltmeter scale. Apply the same procedure
in measuring voltage. However, in current
measurement, the meter must be connected in
series with the circuit. Unlike in measuring
voltage, the connection is in parallel.

20. DC Current Measurement
Range
Major
Division
Minor
Division
50uA 10 1
2.5mA 0.5 0.05
25mA 5 0.5
0.25A 0.05 0.005

21. THANK YOU!