Highlighted Features of the FNIRSI DSO-TC3 Tester and Oscilloscope
Triple Integration: Component tester, digital oscilloscope, and signal generator combined in one device.
Functional Oscilloscope: 500KHz bandwidth and 10MS/s sampling rate with AUTO capability.
Smart Component Tester: Automatic identification and measurement of various transistors, diodes, capacitors (with ESR), and more.
Built-in Signal Generator: Ability to produce 6 different waveform types (sine, square, pulse, etc.).
Various Additional Functions: Voltage test, continuity test, thermometer, and infrared (IR) decoder.
Portable Design: 2.4-inch color display and built-in rechargeable lithium battery.
FNIRSI DSO-TC3 Portable Oscilloscope at a Glance
The FNIRSI DSO-TC3 is a multifunctional and portable measuring tool that integrates three key devices — a digital oscilloscope, electronic component tester, and signal generator — into a compact body. This model, an improved version of the DSO-TC2, offers enhanced oscilloscope bandwidth, added capacitor ESR testing capability, and improved signal generator output, providing higher performance for users. The 2.4-inch color display and built-in rechargeable battery make it an ideal choice for repair technicians, students, and electronics enthusiasts.
FNIRSI DSO-TC3 Technical Specifications by Function
Digital Oscilloscope Specifications DSO-TC3
Feature
Value
Instantaneous Sampling Rate
10MSa/s
Analog Bandwidth
500KHz
Input Resistance
1MΩ
Coupling Mode
AC/DC
Test Voltage Range
400V
Vertical Sensitivity (x1)
10mV-10V
Horizontal Time Range
1us-10s
Trigger Mode
Auto / Normal / Single
Trigger Type
Rising Edge / Falling Edge
Waveform Freeze
Yes
Auto Measurement
Yes
Signal Generator Specifications DSO-TC3
Waveform Type
Specifications
Sine Wave
1-100KHz / 0-3.3V / 50%
Square Wave
1-100KHz / 3.3V / 50%
Pulse Wave
1-100KHz / 3.3V / 0-100%
Triangle Wave
1-100KHz / 0-3.3V / 50%
Ramp Wave
1-100KHz / 0-3.3V / 0-100%
DC
0-3.3V
Component Tester and Other Tools Specifications DSO-TC3
Component/Tool
Range and Specifications
Transistors (Triodes)
β greater than 10 and less than 600
Diodes
Forward voltage drop < 4.5V
Zener Diode
0.014.5V (test range 1-2-3) 0.0132V (test range K-A-A)
MOSFET
JFET, IGBT, MOSFET
Thyristor and Triac
Turn-on voltage < 5V, gate trigger current < 6mA
Capacitor
25pF~100mF
Resistor
0.01Ω~50MΩ
Inductor
10uH~1000mH
Battery
0.1~4.5V
Input Voltage
0~40V
DS18B20 Temperature Sensor
0-85℃
DHT1 Sensor
0-60℃ / 5-95%
Remote Control Decoding
NEC infrared protocol
In-Depth Exploration of the DSO-TC3 Handheld Oscilloscope Features and Functions
Deep Analysis of the FNIRSI DSO-TC3 Multifunction Tester
The FNIRSI DSO-TC3 is an all-in-one and economical tool designed to consolidate essential electronics bench equipment into a portable device. By combining an oscilloscope, component tester, and signal generator, this product eliminates the need for many users to purchase three separate devices.
Feature Breakdown: Oscilloscope, Component Tester, and Signal Generator
Digital Oscilloscope: This part of the device, with a bandwidth of 500KHz and a sampling rate of 10MS/s, is perfectly suited for observing and analyzing low-frequency signals such as power supply outputs, audio signals, PWM signals, and simple communication protocols (like UART and I2C at low speeds). The AUTO feature allows users to quickly view waveforms on the display without complex settings.
Electronic Component Tester: This is the standout feature of the DSO-TC3. The device automatically identifies the component type, pins (Pinout), and key parameters, displaying them. It supports a wide range of components including NPN and PNP transistors, MOSFETs, diodes, LEDs, resistors, inductors, and capacitors. A significant improvement over the previous generation is the ability to measure capacitor Equivalent Series Resistance (ESR), which is very useful for capacitor troubleshooting.
Signal Generator: Equipped with an internal function generator, it can produce 6 standard waveform types (sine, square, pulse, triangle, ramp, and DC) with frequencies up to 100KHz and output voltage of 3.3V. This feature is very useful for testing analog circuits, drivers, and troubleshooting electronic circuits.
Purchase Value and Price Evaluation of the FNIRSI DSO-TC3 Oscilloscope Tester
Considering its triple functionality and very competitive price, the FNIRSI DSO-TC3 offers exceptional value. This product is a smart and economical alternative to separately purchasing a basic oscilloscope, an LCR meter, and a signal generator, significantly reducing the final cost. It is especially ideal for small workshops, students, and repair technicians seeking an efficient and cost-effective tool.
Pros and Cons from User Perspectives
Strengths:
3 devices in 1: Great savings in cost and workspace.
Portable and easy to carry: Built-in battery and compact size make it suitable for use anywhere.
Easy to use: Simple menus and automatic component detection make it accessible for beginners.
Powerful component tester: Supports a wide range of components and measures key parameters.
Limitations:
Limited oscilloscope bandwidth: 500KHz bandwidth is not suitable for high-frequency signal analysis (such as telecommunications circuits or fast digital protocols) and limits its use to low voltage and low frequency applications.
Signal generator voltage limitation: Output voltage is limited to 3.3 volts.
Who is the FNIRSI DSO-TC3 Oscilloscope and Component Tester Ideal For?
Electrical and Electronics Engineering Students: As a first measuring tool for learning and project work.
DIY Enthusiasts and Hobbyists: A complete and economical tool for building and testing electronic circuits.
Audio, Video, and Home Appliance Repair Technicians: For quick troubleshooting of power and control circuits.
Mobile and Laptop Repair Technicians: For component testing and initial signal inspection.
Electronics Training Centers and Workshops: As a comprehensive and low-cost educational kit.
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