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FNIRSI DSO-TC4 3-in-1 oscilloscope and component tester
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  • FNIRSI DSO-TC4 3-in-1 oscilloscope and component tester
  • Handheld oscilloscope with signal generator FNIRSI
  • FNIRSI DSO-TC4 10MHz 48MSa/s digital oscilloscope

FNIRSI® DSO-TC4 – 3-in-1 Oscilloscope, Transistor Tester & Signal Generator

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FNIRSI® DSO-TC4 – 3-in-1 Oscilloscope, Transistor Tester & Signal Generator

Portable diagnostic tool with 2.8" TFT screen, 10 MHz bandwidth, and 48 MSa/s sampling

The FNIRSI DSO-TC4 is a compact 3-in-1 device combining a digital oscilloscope, component tester, and waveform generator. With 10 MHz bandwidth and 48 MSa/s sample rate, it’s ideal for electronics labs, repairs, and mobile diagnostics. Bright 2.8" TFT display and USB-C charging make it a versatile tool for professionals and hobbyists.

Key Features

  • ● 10 MHz oscilloscope with 48 MSa/s sampling
  • ● Component tester: resistors, capacitors, diodes, transistors, MOSFETs and more
  • ● Signal generator: 13 waveforms, up to 50 kHz, 0.1–3.0 V output
  • ● 2.8" TFT screen with brightness adjustment
  • ● Built-in 1500 mAh battery, USB-C charging
  • ● Compact design: 90×142×27.5 mm; weight: 186 g

Technical Specifications

  • ● Max input voltage: 400 V (recommended: ≤40 V)
  • ● Vertical sensitivity: 10 mV/div – 10 V/div
  • ● Time base range: 50 ns/div – 20 s/div
  • ● Trigger modes: Auto / Normal / Single
  • ● Resistance measurement: 0.01 Ω – 50 MΩ
  • ● Capacitance: 25 pF – 1000 μF; Inductance: 10 μH – 1000 μH

Package Contents

  • ● 1× FNIRSI DSO-TC4 device
  • ● 1× USB-C charging cable
  • ● 1× Pair of test leads with clips
  • ● 1× BNC adapter for probe connection
  • ● 1× User manual
  • Note: Oscilloscope probe, power adapter, and case are not included.
Multitool tester for electronics DSO-TC4
Compact oscilloscope with TFT and USB-C

FAQ

Frequently Asked Questions about FNIRSI DSO-TC4 (Oscilloscope + Component Tester + Signal Generator)

It’s a 3-in-1 device: a 10 MHz digital oscilloscope, automatic electronic component tester, and DDS signal generator (0–50 kHz).

It identifies and measures: transistors (NPN/PNP), MOSFETs, thyristors, diodes, resistors, capacitors, inductors, continuity, and sensors like DS18B20 and DHT11.

Bandwidth: 10 MHz, Sampling rate: 48 MSa/s, Sensitivity: 10 mV/div to 10 V/div, Time base: 50 ns – 20 s, Trigger modes: Auto, Normal, Single.

The signal generator outputs 13 waveform types (sine, square, triangle, saw, etc.), up to 50 kHz, with adjustable amplitude (0.1–3 V) and duty cycle.

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Display: 2.8" color TFT, Power: 1500 mAh battery (approx. 4 h runtime), Charging via USB-C (5 V/1 A), Size: 90 × 142 × 27.5 mm, Weight: ~186 g.

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