FNIRSI DSO-TC4 3-in-1 Handheld Digital Oscilloscope Multitester
Original price was: £74.00.£59.00Current price is: £59.00. & Free Shipping
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Description
3-in-1 Digital Oscilloscope, Transistor Tester & Signal Generator
The FNIRSI DSO-TC4 is a versatile 3-in-1 handheld instrument that combines a digital oscilloscope, comprehensive component tester, and DDS signal generator in one compact device. Designed for engineers, technicians, electronics enthusiasts, and repair professionals, this multifunctional tool delivers professional-grade performance in a portable form factor.
Key Features and Capabilities
- High-Performance Oscilloscope – 10 MHz analog bandwidth with 48 MSa/s real-time sampling rate for accurate signal capture and analysis. Maximum test voltage of 400V (with 10:1 probe) ensures versatility across various applications.
- Wide Vertical Sensitivity Range – Adjustable from 10mV/div to 10V/div (X1 range) with selectable AC/DC coupling modes and 1MΩ input impedance for comprehensive signal measurement.
- Flexible Time Base – Time base range from 50ns to 20s allows detailed observation of both fast transients and slow-changing signals with precision.
- Advanced Triggering System – Auto/Normal/Single trigger modes with rising and falling edge detection, plus adjustable trigger level with visual indication for stable waveform capture.
- Comprehensive Automatic Measurements – Instantly displays maximum, minimum, average, RMS, peak-to-peak voltage, frequency, cycle time, and duty cycle without manual calculations.
- Waveform Storage – HOLD function enables waveform freeze, storage, and export for documentation and further analysis.
- Versatile Component Testing – Automatically identifies and tests diodes (forward voltage drop <5V), NPN/PNP transistors, field-effect transistors (JFET, IGBT, MOSTET), SCRs (trigger voltage <5V), bidirectional SCRs (trigger current <6mA), and Zener diodes (0.01~4.5V).
- Comprehensive Passive Component Measurement – Tests capacitors (25pF to 1000μF), resistors (0.01Ω to 50MΩ), and inductors (10μH to 1000μH) with automatic pin identification and parameter display.
- 13 Waveform Signal Generator – Built-in DDS function generator supports 13 different waveform outputs with frequency range from 0 to 50kHz and adjustable output voltage up to 3V for versatile signal simulation.
- Flexible PWM Output – Square wave duty cycle adjustable from 0-100% and waveform amplitude from 0.1V to 3.0V for precise signal generation and testing.
- Sensor Interface Support – Compatible with DS18B20 temperature sensors and DHT11 temperature/humidity sensors for environmental monitoring applications.
- NEC Infrared Decoding – Supports NEC protocol infrared code decoding, making it ideal for debugging and repairing remote control devices.
Practical Applications
Circuit Development and Prototyping – Visualize circuit behavior in real-time, generate test signals, and verify component values all with a single instrument, streamlining the development process.
Electronics Repair and Troubleshooting – Quickly diagnose faulty components on circuit boards, test power supply ripple, verify signal integrity, and decode infrared remote controls during repair work.
Quality Control and Incoming Inspection – Rapidly test and verify electronic components before assembly, ensuring only quality parts enter production while identifying counterfeit or out-of-specification components.
Educational and Training Applications – An excellent teaching tool for electronics courses, allowing students to observe signal behavior, understand component characteristics, and practice measurement techniques.
Field Service and Maintenance – The portable design makes it perfect for on-site equipment testing, telecommunications work, industrial maintenance, and any application where multiple test instruments would be impractical.
Hobbyist and DIY Projects – Ideal for Arduino, Raspberry Pi, and electronics hobby projects where signal debugging, component testing, and waveform generation are frequently needed.
Enhanced Testing Efficiency
The DSO-TC4 features automatic calibration functionality that ensures consistent accuracy across all measurement modes. The one-key AUTO function allows for quick waveform display without manual adjustments, significantly reducing setup time. The continuity test function provides immediate audio-visual feedback for circuit connectivity verification, while the voltage measurement capability (up to 40V input with appropriate probe) adds further diagnostic versatility.
The intuitive 2.8-inch TFT color screen with LED backlight provides clear visualization of waveforms and measurement data, with adjustable brightness to suit different lighting environments. The dual input impedance of 1MΩ ensures minimal circuit loading during measurements.
Portability and Convenience
Compact and lightweight at approximately 186g with dimensions of 90×142×27.5mm, the DSO-TC4 is truly handheld and portable. The built-in 3.7V 1500mAh rechargeable lithium battery provides extended operating time for field work, with convenient TYPE-C charging (5V/1A). Energy-saving automatic shutdown options (15/30/60 minutes) help maximize battery life during intermittent use.
The device supports multiple languages including Chinese, English, Deutsch, Português, Japanese, Español, Korean, and Russian, making it accessible to users worldwide.
Complete Package
The DSO-TC4 comes with a comprehensive accessory package including a P6100 high voltage probe for safe measurements up to 400V, an alligator clip probe for general testing, three test hooks for component identification, an adapter, TYPE-C charging cable, carrying case, and detailed user manual.
In summary, the FNIRSI DSO-TC4 is an exceptional all-in-one diagnostic tool that eliminates the need for multiple separate instruments. Whether you’re troubleshooting circuits, testing components, generating signals, or teaching electronics principles, this versatile device delivers professional performance in a remarkably compact and affordable package.
Additional information
| Weight | 0.400 kg |
|---|---|
| Dimensions | 23 × 16 × 13 cm |
| Brand Name | FNIRSI |
| FNIRSI Model | DSO-TC4 |
| Battery Included | Yes |
| Origin | Mainland China |
| High-concerned chemical | None |
| DIY Supplies | Electrical |
| Model Number | DSO-TC4 |
| IS Battery Demountable | No |
| Certification | CE, EAC, RoHS, weee |
| Display screen | 2.4 inch TFT color screen |
| Supply voltage | Rechargeable lithium battery |
| Charging specifications | Type-C 5V |
| Bracket specifications | All-in-one foldable stand |
| Real-time sample rate | 10MSa/s |
| Analog Bandwidth | 500Khz |
| Input resistance | 1MΩ |
| Coupling method | AC/DC |
| Test voltage range | 400V |
| Vertical Sensitivity (x1) | 10mV-10V |
| Horizontal time base range | 1us-10s |
| Trigger mode | Auto / Normal / Single |
| Trigger type | Rising edge / Falling edge |
| Waveform Freeze | Yes |
| Automatic measurement | Yes |
| Diodes | Forward voltage drop <4.5V |
| Reglulated diode | 0.01~4.5V |
| MOSFET | JFET IGBT MOSFET |
| SCR | Turn-on voltage <5V, gate Pole trigger current <6mA |
| Capacitor | 5pF~100mF |
| Resistor | 0.01Ω~50MΩ |
| Inductor | 10uH~1000mH |
| Battery | 0.1~4.5V |
| Input voltage | 0~40V |
| DS18B20 | 0-85℃ |
| DHT11 | 0-60℃/5-95% |
| Infrared remote decoding | NEC protocol infrared code |
| Triangle wave | 1-10KHz/0-3.3V/50%, 1-10KHz/0-3.3V/50% |
| Square wave | 1-100KHz/3.3V/50% |
| Pulse wave | 1-100KHz/3.3V/0-100% |
| Ramp | 1-10KHz/0-3.3V/0-100% |
| DC | 0-3.3V |
44 reviews for FNIRSI DSO-TC4 3-in-1 Handheld Digital Oscilloscope Multitester
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Manfred S. (verified owner) –
I had problems with the first firmware update but they helped me immediately via email. The response was very quick and the problem was resolved. Thank you Jeff.
Jeremy (verified owner) –
Excellent device for the hobbyist.
Nikita A. (verified owner) –
This is a cheap tester/oscilloscope that does what it’s supposed to. It takes time to figure out how to make measurements even with instructions next to you.
Joan C.F. (verified owner) –
FNIRSI DSO-TC4 3-IN-1 10MHz 48MSa/s Digital Oscilloscope Transistor Tester Signal Generator
Ognyan G. (verified owner) –
Very useful and good device!
J.V. (verified owner) –
Low end hobbyist scope.
David W. (verified owner) –
A nice addition to my maker hobby bench.
Jasper v.d.H. (verified owner) –
Bought it to try out and very happy with the results easy to use. Firmware update procedure can be explained better in the manual but still I love this device.
يزدان ش.م. (verified owner) –
I like this device. In the last update the 18B20 and DHT11 sensors don’t work.
Roland L.H. (verified owner) –
Thank you FNIRSI team all your products are great good quality and good tools at reasonable prices.
Sorin C. (verified owner) –
The product and the price was very good. Everything was ok.
R.H. (verified owner) –
Handy hobbyist tool for component identification.
Jack (verified owner) –
This company makes very well designed good quality and inexpensive instruments. Highly recommended!
Raymond M. (verified owner) –
Just what I needed!
Nicola F. (verified owner) –
FNIRSI DSO-TC4 3-IN-1 10MHz 48MSa/s Digital Oscilloscope Transistor Tester Signal Generator
Vincent B. (verified owner) –
FNIRSI DSO-TC4 3-IN-1 10MHz 48MSa/s Digital Oscilloscope Transistor Tester Signal Generator
Baz D. (verified owner) –
Great for small jobs where lugging my trusty old scope and function generator is too much like hard work.
Brian H. (verified owner) –
Quality stuff! The clamp meter has useful extra functionality.
Michele P. (verified owner) –
I got the oscilloscope and it works. I’m still learning so many functions included on this instrument.
Simon T. (verified owner) –
I love it and use it often. Good battery life very versatile. The function generator is super handy to simulate broken parts or to calibrate old gear like turntables. Lovely tool for repairs of all kinds. Recommendation!
Adrian w. (verified owner) –
Very handy equipment at cheap price. Thank you works well.
Reynold B. (verified owner) –
Did some checks on mosfets and it was very easy to use! Would recommend this device!
Chris F. (verified owner) –
I would have given this review 5 stars except for the fact that it required a firmware update before it would correctly measure certain resistance values. The instructions on how to perform the upgrade are inadequate and I was only able to perform the upgrade after finding a YouTube video from a third party.
Paul (verified owner) –
Fantastic.
Ralf H. (verified owner) –
I like your products a lot but your manuals are something you should improve significantly. A lot of things are not explained in the manuals. For the DSO-TC4 why are there so many contacts in the transistor socket and how should they be used? The manual does not explain the differences between the KAA and 123 contacts at all. Please update your manuals.
Bradley (verified owner) –
Makes component identification and verification easy. Simple to use. Included accessories make this a flexible tool.
Mr (verified owner) –
An invaluable device.
Ahmed A. (verified owner) –
Excellent oscilloscope portable. These products provide excellent practice with good experience for students taking their first steps in the world of electronics.
George V. (verified owner) –
Generally works very well. Some minor reading errors with the component tester but still very useful given its compact size.
Anonymous (verified owner) –
This is an impressive instrument. Works well straight out of the box. Clear instructions.
Eddy B. (verified owner) –
I bought this device despite having a good digital oscilloscope already but the fact that it has a handy signal generator built in is very useful. I work a lot with synthesizers so I need to be able to inject signals into circuits. I wish the amplitude could be a bit higher – it’s only 3V max. I like the component identifier too. The user interface is very difficult to navigate – some buttons have hidden functions requiring double press or press and hold which is very confusing.
Hakan D. (verified owner) –
FNIRSI DSO-TC4 3-IN-1 10MHz 48MSa/s Digital Oscilloscope Transistor Tester Signal Generator
Michael C. (verified owner) –
Exactly as described well wrapped. Will be very useful in the workshop or on the move. I have recently purchased several FNIRSI units and I am very pleased with my purchases.
Peter C. (verified owner) –
FNIRSI DSO-TC4 3-IN-1 10MHz 48MSa/s Digital Oscilloscope Transistor Tester Signal Generator
Pieter (verified owner) –
Nice tool for my workbench testing components a quick to use oscilloscope for basic measurements all in a compact and nicely designed unit.
Erik G. (verified owner) –
Very nice designed combo which incorporates a multimeter oscilloscope and signal generator for a very reasonable price. The unit is easy to work with has a good display and is accurate when compared with a Fluke multimeter measuring DC. I am very happy with the quality and design of this device.
Ge L. (verified owner) –
Good but it would be very handy to have multimeter test leads with 4mm banana plugs especially for the voltage tests. The custom plugs provided by FNIRSI somehow limit usability as you cannot change the test leads.
Rosca (verified owner) –
It is as described.
Ike (verified owner) –
Outstanding!
Steve W. (verified owner) –
Each product (scope transistor tester function generator) has every feature that you think it should have to get the job done.
Tamás K. (verified owner) –
The tool is amazing and accurate enough for low-frequency measurements. The device is ready for measurement quickly and does the job with the least interactions so it can save you time when you are working on something. I’m very happy with the device.
Heidi T. (verified owner) –
Very good.
James W. (verified owner) –
I bought it because it has a signal generator and a scope but I use it mostly as a component tester. Transistors mosfets diodes capacitors resistors. The only thing is it is a single channel. The oscilloscope probe is pretty good quality the other component tester probes are pretty delicate. All in all good value.
Halil (verified owner) –
Very good product but can’t test triac (thyristors). Maybe in the future with a firmware change that can be fixed.