Key Features

• 3-in-1 Tool: Digital oscilloscope, signal generator, and component tester.
• Upgraded Performance: 10MSa/s sample rate, 500kHz bandwidth, and extended detection capabilities.
• Advanced Component Testing: Triodes, FETs, diodes, resistors, capacitors, SCRs, MOSFETs, and more.
• Waveform Output: Sine, square, pulse, triangle, ramp, and DC.
• Infrared Decoding: Supports NEC protocol IR signal detection.
• Environmental Sensing: DS18B20 and DHT1 support for temperature and humidity.
• Rechargeable & Portable: Compact body with USB-C charging and foldable stand.

• Basic Parameters

  ---

  Parameter	Specification
  Display	2.4" TFT color screen, LED backlight
  Battery	Rechargeable lithium battery
  Charging	USB Type-C, 5V input
  Dimensions	79 × 103 × 31 mm
  Stand	Integrated foldable bracket

• Digital Oscilloscope Specifications

  ---

  Parameter	Specification
  Sample Rate	10MSa/s
  Bandwidth	500kHz
  Input Resistance	1MΩ
  Coupling	AC/DC
  Test Voltage Range	Up to 400V
  Vertical Sensitivity	10mV–10V
  Time Base	1μs–10s
  Trigger Modes	Auto / Normal / Single
  Trigger Edge	Rising / Falling
  Waveform Freeze	Supported
  Auto Measurement	Supported

  Signal Generator Output

  ---

  Waveform	Frequency	Amplitude	Duty Cycle
  Sine	1–100kHz	0–3.3V	50%
  Square	1–100kHz	3.3V	50%
  Pulse	1–100kHz	3.3V	0–100%
  Triangle	1–100kHz	0–3.3V	50%
  Ramp	1–100kHz	0–3.3V	0–100%
  DC	Static	0–3.3V	—

  Transistor Tester & Component Analysis

  ---

  Component	Range / Notes
  Triodes (NPN/PNP)	β = 10–600
  Diodes	Vf < 4.5V
  Zener Diodes	0.01–4.5V (1-2-3), 0.01–32V (K-A-A)
  MOSFETs	Supports JFET, IGBT, MOSFET
  SCRs/TRIACs	V<5V, Gate trigger current <6mA
  Capacitors	25pF–100mF
  Resistors	0.01Ω–50MΩ
  Inductors	10μH–1000μH
  Battery Test	0.1–4.5V
  Input Voltage	0–40V
  DS18B20 Sensor	0–85°C
  DHT1 Sensor	0–60°C, 5–95% RH
  IR Decoding	NEC protocol infrared code

  Notes & Conditions

  ---

  • Parameters like Ice, Iceo, Uf, Vloss, and junction capacitance are only shown when valid.
  • Inductance is measurable for components with <2.1kΩ resistance.
  • FET detection is valid when turn-on voltage is <5V.
  • IR decoding supports NEC protocol only.

  • Applications

    ---

    • Electronics repair and debugging
    • Circuit design and prototyping
    • Educational electronics training
    • Component identification and sorting
    • DIY projects and hobby electronics
    • Temperature and environmental sensing
    • Embedded system signal testing
    • Infrared signal analysis for remote controls

    Its portability, multi-functionality, and ease of use make it especially useful for field technicians, hobbyists, engineers, and educators.

  • Package Contents

    ---

    • 1 × FNIRSI DSO-TC3 Main Unit
    • 1 × P6100 High Voltage Probe
    • 1 × Adapter
    • 1 × Ordinary Probe
    • 3 × Test Hooks (Red, Green, Black)
    • 1 × Packing Box
    • 1 × User Manual
    • 1 × USB Type-C Charging Cable

    • Frequently Asked Questions (FAQ)

      ---

      What is the difference between DSO-TC3 and DSO-TC2?
      The DSO-TC3 is an upgraded version of the DSO-TC2 with improvements in sampling rate, bandwidth, capacitance ESR detection, signal generator output, and wider voltage and diode testing ranges.

      Can the DSO-TC3 be used as a regular oscilloscope?
      Yes, it functions as a digital storage oscilloscope with a 500kHz bandwidth and 10MSa/s sampling rate, making it suitable for analyzing low to mid-frequency signals in DIY electronics, audio, and embedded systems.

      What types of components can it test?
      It supports a wide range of component testing, including NPN/PNP transistors, MOSFETs, IGBTs, diodes, Zener diodes, SCRs, resistors, capacitors, inductors, and batteries.

      Does it include waveform output functionality?
      Yes, the built-in signal generator can output sine, square, triangle, pulse, ramp, and DC waveforms from 1Hz to 100kHz, making it useful for testing and simulation.

      Can it decode infrared signals?
      Yes, it supports infrared remote signal decoding using the NEC protocol, allowing users to analyze remote control signals.

      Is the battery rechargeable?
      Yes, the DSO-TC3 includes a built-in rechargeable lithium battery and charges via USB Type-C.

      What sensors are supported for environmental data?
      It supports the DS18B20 temperature sensor and DHT11 (or DHT1) sensor for both temperature and humidity measurements.