What Can You Test with FNIRSI 1014D Oscilloscope Malaysia?
What Can You Test with FNIRSI 1014D Oscilloscope Malaysia?
What can you actually test with the FNIRSI 1014D Oscilloscope?
Unlike a digital multimeter that mainly displays numerical measurements, an oscilloscope allows you to see electrical signals changing over time.
The FNIRSI 1014D combines a 100MHz dual-channel digital oscilloscope with a built-in signal generator, making it useful for electronics repair, PCB troubleshooting, technical education and general circuit testing in Malaysia.
Here are some practical applications.
1. Check Electronic Circuit Waveforms
One of the most basic uses of the FNIRSI 1014D is checking whether a circuit is producing the expected waveform.
You may observe:
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Sine waves
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Square waves
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Pulse signals
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PWM signals
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Clock signals
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Oscillator outputs
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Control signals
Instead of knowing only the voltage, you can see the actual waveform on the screen.
This can reveal problems that may not be obvious with a multimeter.
2. Check PWM Signals
PWM — Pulse Width Modulation is widely used in electronic control systems.
Applications may include:
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Motor speed control
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LED dimming
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Power supplies
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Fan controllers
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Microcontroller projects
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Electronic control circuits
With an oscilloscope, you can observe the PWM waveform and check characteristics such as frequency and duty cycle.
If the PWM signal disappears or becomes abnormal, it can help narrow down the troubleshooting area.
3. Compare Input and Output Signals
Because the FNIRSI 1014D has two oscilloscope channels, it can display two signals simultaneously.
For example:
CH1 → Circuit input
CH2 → Circuit output
This allows you to compare what happens before and after a particular circuit stage.
This approach can be useful when troubleshooting:
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Amplifiers
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Filters
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Signal-conditioning circuits
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Sensor circuits
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Control boards
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General electronic PCBs
If the input waveform looks correct but the output is missing or distorted, the fault may be located within that circuit stage.
4. Check Power Supply Ripple
A power supply may show the correct DC voltage on a multimeter while still having excessive ripple or electrical noise.
For example, a multimeter might show approximately 12V DC, but that number alone does not show how clean the DC output is.
An oscilloscope allows technicians to examine the waveform riding on the DC supply.
This can help when troubleshooting:
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DC power supplies
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Adapters
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Electronic control boards
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Low-voltage power circuits
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Power supply output problems
Correct probe setup and oscilloscope settings are important when measuring small ripple signals.
5. Check Oscillator and Clock Signals
Many electronic circuits depend on a clock or oscillator.
If the oscillator is not operating correctly, the rest of the circuit may stop functioning even when the supply voltage is normal.
An oscilloscope can help determine whether a waveform is present and whether its frequency and shape appear reasonable.
This is useful for selected:
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Microcontroller circuits
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Digital electronics
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Development boards
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Timing circuits
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Embedded systems
The measurement must remain within the bandwidth and input limitations of the instrument and probe.
6. Troubleshoot Intermittent Signals
Some electronics faults are difficult to identify because the voltage is not continuously wrong.
The signal may:
Appear and disappear
Become unstable
Contain unexpected pulses
Change when the equipment operates
Show excessive noise
An oscilloscope provides a visual representation of these changes.
This can give technicians additional information beyond a static multimeter reading.
7. Test Amplifier Circuits
The built-in signal generator makes the FNIRSI 1014D particularly useful for basic amplifier experiments and troubleshooting.
A simple testing arrangement could be:
Signal Generator → Amplifier Input → Amplifier Output
You can then use the oscilloscope to compare the input and output.
This may help identify:
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Missing output
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Distortion
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Clipping
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Unexpected gain
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Abnormal waveform behaviour
This is also a useful experiment for electronics students learning how amplifiers work.
8. Test Filters and Signal-Processing Circuits
The same principle can be applied to suitable filter circuits.
Generate a known signal, feed it into the circuit and compare the input with the output.
By changing the test frequency, users can observe how the circuit responds.
This is useful for basic learning and troubleshooting of:
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Low-pass filters
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High-pass filters
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Audio circuits
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Signal-conditioning circuits
For accurate professional frequency-response characterization, more specialized equipment and measurement methods may be required.
9. Electronics Education and Training
The FNIRSI 1014D can also be used as a practical teaching instrument.
Students can learn concepts including:
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Voltage
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Frequency
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Period
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Amplitude
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Duty cycle
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Waveform shape
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Phase relationship
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Signal distortion
Instead of learning only from diagrams, students can generate and observe real electrical waveforms.
This makes the instrument relevant for technical colleges, electronics courses, training centres and engineering students in Malaysia.
10. Arduino and Microcontroller Projects
For Arduino, MCU and embedded electronics projects, an oscilloscope can help answer questions such as:
Is the PWM output working?
Is the clock signal present?
Is the pulse frequency correct?
Is the sensor producing a changing output?
Does the signal reach the next circuit stage?
These measurements can be especially useful when the software appears correct but the hardware is not behaving as expected.
What Should You NOT Measure Without Proper Knowledge?
An oscilloscope is not simply a probe that can be connected anywhere.
Special attention is required when working with:
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AC mains
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High-voltage power supplies
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Inverters
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Motor drives
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Industrial power electronics
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High-energy electrical systems
Incorrect grounding or probing can damage the oscilloscope, damage the equipment or create a serious electrical hazard.
Always understand the oscilloscope input rating, probe rating, grounding arrangement and circuit voltage before connecting the instrument.
FNIRSI 1014D – Who Is It Best For?
The FNIRSI 1014D is best considered for users who need an affordable oscilloscope for:
Electronics repair
PCB troubleshooting
Technical education
Electronics projects
Basic R&D
Embedded-system development
General maintenance
Its combination of a dual-channel oscilloscope and signal generator provides useful functionality in one desktop instrument.
Looking for FNIRSI 1014D in Malaysia?
For enquiries about the FNIRSI 1014D Oscilloscope with Signal Generator in Malaysia, contact MTM Precision Sdn Bhd.
If you are unsure whether the FNIRSI 1014D is suitable for your application, send us a photo of the circuit, equipment or signal you want to measure through WhatsApp.
MTM Precision Sdn Bhd
Showroom & Service Centre:
No. 29-1 & 29-2, Jalan Bandar 18,
Pusat Bandar Puchong,
47160 Puchong, Selangor, Malaysia.
Tel: 03-8080 7172
WhatsApp: +6016-660 7346
Email: mtmpre@yahoo.com
Website: www.mtmpre.com.my
Serving customers across Selangor, Kuala Lumpur, Johor, Penang, Melaka, Negeri Sembilan, Perak, Pahang, Kelantan, Terengganu, Kedah, Perlis, Sabah and Sarawak.
05 Oct 2026
