FNIRSI® DSO-TC3 3-IN-1 Handheld Digital Oscilloscope Signal Generator Transistor Tester

The FNIRSI DSO-TC3 combines three essential diagnostic tools into a single compact handheld unit, integrating a digital oscilloscope, a DDS signal generator, and an automatic transistor tester. Designed for electronics enthusiasts and professionals, the DSO-TC3 delivers versatile measurement and component analysis capabilities in a battery-powered portable form. Real-time sampling rate: 10 MS/s with 500 kHz bandwidth for accurate signal capture. Voltage range: Measures up to ±400 V to support diverse test scenarios. Signal generator: DDS output with 6 waveform types including triangle, square, pulse, ramp, and DC, with adjustable frequency and amplitude. Component tester: Automatic identification of transistors and passive components, reporting pin assignments, hFE, and turn-on voltage. Display: 2.4-inch TFT color screen with LED backlight for clear visualization. The instrument offers selectable trigger modes (single, normal, automatic) and smooth waveform display enabled by advanced sampling and reliable triggering. The DDS generator covers frequencies from 1 Hz to 100 kHz for flexible signal injection during circuit testing. Power is provided by a rechargeable lithium battery with USB Type-C charging for convenient field use. Combining oscilloscope, signal generator, and transistor tester functions in one handheld device reduces the need for multiple instruments while streamlining diagnostic workflows.