Handheld Oscilloscope FNIRSI DSO TC3 10MS/s 500kHz with Built in

Description

Product Overview

The FNIRSI DSO‑TC3 is a compact, handheld instrument that combines the core functions of a digital oscilloscope, a function signal generator, and an electronic component tester into a single portable package. Housed in a rugged polymer chassis, the device measures just 7.91 x 5.67 x 4.09 inches and weighs a little over a pound, making it easy to carry in a tool bag or backpack. The 2.4‑inch TFT LCD provides a clear, high‑contrast view of waveforms, menus, and diagnostic data, while the built‑in lithium‑polymer battery delivers up to eight hours of continuous operation without needing an external power source. With a 10 MS/s sampling rate and a 500 kHz bandwidth, the DSO‑TC3 captures both fast transient events and steady‑state signals with sufficient resolution for most hobbyist and field‑service applications. The instrument also includes a one‑key AUTO acquisition mode that automatically adjusts vertical and horizontal scales, simplifying the measurement process for users who may not be familiar with oscilloscope settings. Additional integrated functions such as a transistor tester, continuity checker, voltage measurement, PWM output, and support for common sensors (DS18B20 temperature, DHT11 humidity) expand the device’s utility beyond pure waveform capture, turning it into a versatile troubleshooting companion for electronics repair, prototype validation, and educational labs.

Usage

The DSO‑TC3 is designed for use in a wide range of environments where portability and quick insight are essential. Field technicians can employ the handheld scope to diagnose power‑line irregularities, verify signal integrity in automotive wiring, or troubleshoot portable audio equipment on site. Hobbyists and makers benefit from the built‑in function generator when testing speaker drivers, LED dimming circuits, or custom microcontroller projects, while the component tester streamlines the identification of unknown transistors, diodes, and MOSFETs during parts‑sorting sessions. In educational settings, the device serves as an affordable laboratory instrument, allowing students to explore both analog and digital waveforms, experiment with waveform synthesis, and learn basic circuit diagnostics without the overhead of a bench‑top oscilloscope. Because the unit runs on a rechargeable battery, it can be used in remote locations, outdoor events, or during travel where mains power is unavailable. The intuitive menu system, combined with the AUTO mode, reduces the learning curve, making the DSO‑TC3 suitable for both seasoned engineers and newcomers to electronics testing.

Why Choose Us

FNIRSI has a reputation for delivering reliable measurement tools that balance performance with affordability, and the DSO‑TC3 exemplifies that philosophy. Each unit undergoes a rigorous quality‑control process that includes calibration of the analog front‑end, verification of the digital signal processing chain, and endurance testing of the battery and enclosure. The device’s firmware is regularly updated to address user feedback, improve stability, and add new measurement modes, ensuring that owners receive ongoing value long after purchase. The integrated component tester is calibrated against a library of over 200 transistor and diode types, providing accurate pin‑identification and parameter extraction without the need for external fixtures. FNIRSI also offers a responsive technical support team that can assist with setup, troubleshooting, and firmware upgrades, and a one‑year warranty covers any manufacturing defects. By choosing the DSO‑TC3, customers gain a single, lightweight instrument that replaces multiple bench tools, reduces inventory costs, and accelerates time‑to‑diagnosis in both professional and hobbyist contexts.

Key Features

• Portable 2.4‑inch TFT display with intuitive menu navigation for fast waveform analysis.
• 10 MS/s sampling rate and 500 kHz bandwidth capture both fast transients and steady signals.
• Built‑in rechargeable lithium‑polymer battery provides up to eight hours of autonomous operation.
• Integrated transistor, diode, and MOSFET tester simplifies component identification and verification.
• Dedicated after‑sales support and one‑year warranty ensure reliable long‑term ownership.

FAQ

What types of signals can the DSO‑TC3 measure?

The scope handles both periodic analog waveforms and aperiodic digital pulses. With a 500 kHz bandwidth and 10 MS/s sampling, it can accurately display audio signals, PWM outputs, sensor data, and fast edge transitions typical in microcontroller debugging.

Can the built‑in battery be replaced?

Yes. The lithium‑polymer battery is a user‑serviceable component. FNIRSI provides replacement cells and a step‑by‑step guide, and the device includes a battery‑level indicator to warn users before power runs low.

How does the AUTO mode work?

When AUTO is pressed, the instrument automatically selects appropriate vertical voltage scale, horizontal time base, and trigger settings based on the incoming signal, delivering a ready‑to‑view waveform without manual configuration.

Is the DSO‑TC3 suitable for educational labs?

Absolutely. Its easy‑to‑learn interface, comprehensive measurement functions, and safety‑rated input protection make it an ideal teaching tool for introductory electronics courses and hands‑on labs.

What connectivity options are available?

The DSO‑TC3 includes a USB‑type C port for firmware updates, data export, and charging. It also supports optional external probes and accessories that expand measurement capabilities.