Highlighted Features of the FNIRSI DSO-TC3 Tester and Oscilloscope
Triple Integration: Component tester, digital oscilloscope, and signal generator combined in one device.
Practical 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 Auxiliary Functions: Voltage test, continuity test, thermometer, and infrared (IR) decoder.
Portable Design: 2.4-inch color display and rechargeable internal 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—digital oscilloscope, electronic component tester, and signal generator—into a compact body. This model, an improved version of the DSO-TC2, offers higher performance with enhanced oscilloscope bandwidth, added capacitor ESR testing capability, and improved signal generator output. The 2.4-inch color display and rechargeable internal battery make it an ideal choice for technicians, students, and electronics enthusiasts.
FNIRSI DSO-TC3 Technical Specifications by Function
DSO-TC3 Digital Oscilloscope Specifications
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
Automatic Measurement
Yes
DSO-TC3 Signal Generator Specifications
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
DSO-TC3 Component Tester and Other Tools Specifications
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 (in test ranges 1-2-3) 0.0132V (in test ranges 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's Functions and Features
Detailed Analysis of the FNIRSI DSO-TC3 Multifunction Tester
The FNIRSI DSO-TC3 is an all-in-one, economical tool designed to consolidate essential electronics bench equipment into a portable device. By integrating an oscilloscope, component tester, and signal generator, it eliminates the need for many users to purchase three separate devices.
Feature Breakdown: Oscilloscope, Component Tester, and Signal Generator
Digital Oscilloscope: This section of the device, with a 500KHz bandwidth and 10MS/s sampling rate, is ideal for viewing 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 adjustments.
Electronic Component Tester: This is the standout feature of the DSO-TC3. The device automatically identifies the component type, pins (pinout), and key parameters. 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), very useful for capacitor troubleshooting.
Signal Generator: Equipped with an internal function generator capable of producing 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 electronic circuit troubleshooting.
Purchase Value and Pricing Evaluation of the FNIRSI DSO-TC3 Oscilloscope Tester
Considering its triple functionality and very competitive price, the FNIRSI DSO-TC3 offers exceptional value. It is a smart and economical alternative to buying a basic oscilloscope, an LCR meter, and a signal generator separately, significantly reducing the overall cost. This device is especially ideal for small workshops, students, and technicians seeking an efficient and affordable tool.
Pros and Cons from Users' Perspective
Strengths:
3 devices in 1: Excellent cost and workspace savings.
Portable and Handy: Internal 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 analyzing high-frequency signals (such as telecommunications circuits or fast digital protocols) and limits its use to low voltage and low frequency applications.
Signal Generator Voltage Limit: Signal generator output 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 Technicians: For quick troubleshooting of power circuits and control sections.
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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