FNIRSI

The FNIRSI DSO-TC4 is a portable 3-in-1 instrument combining a digital oscilloscope, electronic component tester and signal generator in a compact handheld design. It is intended for electronics diagnostics, service work and educational use, where multiple measurement functions are required in a single device. The oscilloscope supports a 10 MHz bandwidth with a 48 MSa/s sampling rate, enabling real-time waveform analysis with sufficient detail for general signal inspection. The integrated signal generator provides 13 predefined waveforms with frequency output up to 50 kHz and adjustable amplitude, allowing simulation of circuit behaviour. The component tester automatically identifies and evaluates diodes, transistors, MOSFETs, resistors and capacitors for rapid fault detection. A 2.8-inch TFT display ensures clear visualization of results, while the 1500 mAh rechargeable battery with USB-C charging supports extended portable operation.