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• Select section COURSE SYNOPSIS

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  COURSE SYNOPSIS

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    Learning Outcomes Forum

    Welcome to the course "Digital Multimeter as a Measurement Device."

    In today’s world of electronics and electrical systems, the Digital Multimeter (DMM) is an essential tool used to measure voltage, current, resistance, and other parameters. It is widely used in industries such as electronics, automotive, HVAC, and electrical maintenance.

    This course aims to provide you with fundamental knowledge and hands-on skills to use a digital multimeter safely, accurately, and effectively. You will learn how to operate the device, understand its functions, and apply it in real-world scenarios.

    Topics covered include:

    • Introduction to DMM and its components

    • Proper use of test and safety procedures

    • Common applications, troubleshooting and practical exercises

    By the end of this course, you will be able to:

    • Identify key features of a DMM

    • Perform accurate measurements using the correct settings

    • Follow safety standards when working with electrical circuits

    • Apply DMM skills to diagnose and solve basic electrical issues

    This course is suitable for students, technicians, and anyone interested in developing basic electrical measurement skills.

    Let’s begin the journey to mastering one of the most important tools in the electrical field — the Digital Multimeter.

  • Select activity Are you ready

    

    Are you ready Lesson
• Select section INDUCTION

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  INDUCTION

  • Select activity Please introduce yourself

    

    Please introduce yourself Chat
• Select section MODULE 1 - Introduction to DMM and Its Components

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  MODULE 1 - Introduction to DMM and Its Components

  • Select activity Define what a Digital Multimeter is

    

    Define what a Digital Multimeter is Lesson

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    A Digital Multimeter (DMM) is an electronic measuring instrument used to measure electrical values such as voltage (V), current (A), and resistance (Ω).

    It combines the functions of a voltmeter, ammeter, and ohmmeter into a single device, with a digital display that shows the measured values in numbers for easy reading.

    DMMs are widely used in electronics, electrical work, and troubleshooting because they are:

    • Accurate

    • Portable

    • Easy to use

    Most modern DMMs also include additional features such as continuity testing, diode testing, frequency, and capacitance measurement.

  • Select activity Parts of a Digital Multimeter (DMM)

    

    Parts of a Digital Multimeter (DMM) Lesson

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    Parts of a Digital Multimeter and Their Functions

    1. Display Screen

    2. Dial/Rotary Switch

    3. Function Buttons

    4. Input Terminals (Probes Ports)

    5. Test Probes

    6. Battery Compartment

    7. Fuse

• Select section MODULE 2 - Electrical Parameters Measured by Digital Multimeter

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  MODULE 2 - Electrical Parameters Measured by Digital Multimeter

  • Select activity Understanding Voltage and Measurement Principles

    

    Understanding Voltage and Measurement Principles Lesson

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    📟 3. Steps to Measure Voltage

    1. Turn on the multimeter.

    2. Set the dial to the correct voltage type:

       • DCV to measure batteries, DC circuits

       • ACV to measure wall outlet voltage

    3. Connect the probes:

       • Red probe to VΩmA port

       • Black probe to COM port

    4. Touch the probes across the two points you want to measure.

       • Red probe to the positive side

       • Black probe to the negative/ground side

    5. Read the value on the display.

  • Select activity Understanding Current and Measurement Principles

    

    Understanding Current and Measurement Principles Lesson

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    Steps to Measure Current

    1. Turn on the multimeter.

    2. Set the dial to the correct current type:

       • DCA to measure current in DC circuits (e.g., batteries, electronics).

       • ACA to measure current in AC circuits (e.g., household appliances).

    3. Connect the probes:

       • Red probe to the 10A or mA/μA port (depending on the expected current range).

       • Black probe to the COM port.

    4. Break the circuit and place the multimeter in series with the load:

       • Current must flow through the meter, unlike voltage measurement.

       • Connect the red probe to the side closest to the power source.

       • Connect the black probe to the load side (return path).

    5. Read the value on the display.

  • Select activity Understanding Resistance and Measurement Principles

    

    Understanding Resistance and Measurement Principles Lesson

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    Steps to Measure Resistance

    1. Turn off the power to the circuit or component.

       • Never measure resistance on a live circuit.

    2. Turn on the multimeter.

    3. Set the dial to the resistance (Ω) mode.

       • Some meters have ranges; choose the appropriate one.

       • Many digital meters auto-range automatically.

    4. Connect the probes:

       • Red probe to the VΩmA port.

       • Black probe to the COM port.

    5. Place the probes across the component or points where resistance is to be measured:

       • Polarity does not matter.

       • Ensure no parallel paths affect the reading.

    6. Read the resistance value on the display (in ohms, Ω).

• Select section MODULE 3 -Common applications, troubleshooting and practical exercises

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  MODULE 3 -Common applications, troubleshooting and practical exercises

  • Select activity Common Applications of Measuring Instruments

    

    Common Applications of Measuring Instruments Lesson

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    Common Applications of a Digital Multimeter

    A Digital Multimeter (DMM) is a versatile tool widely used in electronics, electrical work, and troubleshooting. Its main applications include:

    1. Measuring Voltage (AC/DC)

       • Used to check battery voltage in electronics and vehicles.

       • Test wall socket voltage to ensure proper supply.

       • Verify power supply output in electronic devices.

    2. Measuring Current (AC/DC)

       • Determine how much current flows through a circuit.

       • Check for excessive current draw in appliances or automotive circuits.

       • Monitor battery discharge or charging current.

    3. Measuring Resistance (Ω)

       • Test resistors to verify their values.

       • Check for continuity in wires, fuses, or circuit connections.

       • Identify open or short circuits.

    4. Continuity Testing

       • Quickly test if a wire or connection is intact.

       • Emits a beep sound when the path is complete.

       • Useful for checking cables, PCB tracks, and switches.

    5. Diode Testing

       • Measures the forward voltage drop of a diode.

       • Ensures the diode allows current in only one direction.

       • Helps identify faulty diodes in power supplies and rectifiers.

    6. Capacitance Measurement (on advanced DMMs)

       • Used to measure capacitor values.

       • Helpful in troubleshooting power circuits and electronic boards.

    7. Frequency Measurement (on advanced DMMs)

       • Measures frequency of AC signals.

       • Useful in testing oscillators, inverters, and power systems.

    8. Temperature Measurement (with probe)

       • Some DMMs allow temperature readings using a thermocouple probe.

       • Applied in HVAC, refrigeration, and electronics testing.

  • Select activity Troubleshooting Techniques

    

    Troubleshooting Techniques Lesson

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    Troubleshooting Techniques with a Digital Multimeter

    A Digital Multimeter helps identify faults in electrical and electronic circuits. Some common troubleshooting techniques are:

    1. Check Power Supply (Voltage Test)

       • Measure voltage at the power source (battery, adapter, outlet).

       • If there is no voltage, the problem is with the power supply.

    2. Check Continuity (Broken Wires / Connections)

       • Use continuity mode (beep test) to check if a wire, switch, or fuse is intact.

       • If there’s no beep, the wire or component is open/broken.

    3. Check Resistance (Component Testing)

       • Measure resistor values to ensure they match their rating.

       • High or infinite resistance may indicate a damaged component.

    4. Check Current Flow

       • Place the DMM in series with the circuit.

       • If no current flows, a component may be faulty or the path is open.

    5. Check Diodes and Transistors

       • Use diode mode to test if a diode conducts in one direction only.

       • For transistors, check junctions for correct forward/reverse bias readings.

    6. Isolate the Fault

       • Test one section of the circuit at a time (input, mid, output).

       • Compare readings with expected values to locate the faulty part.

• Select section eNotes & Assignment

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  eNotes & Assignment

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    eNote M1-02 Interactive Content
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    eNote M3-02 Interactive Content
  • Select activity QUIZ M1-01

    

    QUIZ M1-01 Interactive Content
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• Select section SURVEY

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  SURVEY

  • Select activity Feedback

    

    Feedback
• Select section SUMMARY

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  SUMMARY

  • Select activity Summary

    A Digital Multimeter (DMM) is a widely used electronic measuring instrument that combines the functions of a voltmeter, ammeter, and ohmmeter into a single compact device. It is an essential tool for technicians, electricians, and engineers working with electrical systems. The DMM typically includes a digital display for reading values, a rotary switch for selecting measurement modes, and input terminals for connecting test probes.

    Digital multimeters are capable of measuring several key electrical parameters. These include voltage (both AC and DC), current (AC/DC), and resistance. Most DMMs also feature continuity testing, which checks whether a circuit is complete, and many advanced models include additional functions such as capacitance, frequency, and diode testing.

    The DMM is used in a variety of applications. It is commonly employed in electronics repair to test batteries and components, in electrical maintenance to check outlets and wiring, and in automotive diagnostics for evaluating fuses and alternators. It is also valuable in industrial settings for routine system checks and equipment maintenance.

    In troubleshooting, the DMM is an invaluable tool. It helps users identify open or short circuits, detect voltage irregularities, and measure current to find potential overloads. By allowing quick and accurate diagnostics, the DMM saves time and enhances safety during electrical work.

    In summary, the digital multimeter is a versatile, reliable, and indispensable instrument in both professional and educational settings for measuring, testing, and troubleshooting electrical systems.

• Select section REFERENCE

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  REFERENCE

  • Select activity References

    1. Department of Standards Malaysia – Calibration Guidelines for DMMs
       Provides national best practices and uncertainty estimation methods for calibrating digital multimeters in Malaysia

    2. Malaysian Standard Definitions
       From JSM, clarifies terminology such as “Digital multimeter (DVM)” and precise definitions of electrical parameters — ensuring local regulatory alignment

    3. Keysight 34401A User’s Guide (Printed in Malaysia)
       Though international, this authoritative manual was printed in Malaysia and includes sections on the user interface, measurement techniques, and component-testing guidance

    4. Fluke Corporation. (n.d.). Digital Multimeters - Product Overview and Application Notes. Retrieved from https://www.fluke.com
       – Manufacturer's official website offering detailed guides and real-world applications for DMMs.

    5. Electronics Tutorials. (n.d.). Digital Multimeter (DMM). Retrieved from https://www.electronics-tutorials.ws
       – Offers simplified explanations of DMM components, functions, and usage scenarios.

• Select section Certificate

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  Certificate