FNIRSI® 2C53T 50MHz 250MS/S Handheld 3in1 Oscilloscope Multimeter Signal Generator

FNIRSI-2C53T is a compact, professional three-in-one diagnostic instrument that integrates an oscilloscope, a multimeter, and a signal generator in a portable form factor. Engineered for maintenance, research, education, and hobby use, the unit employs an FPGA + ARM + ADC architecture with a 250MS/s sampling rate and 50MHz analog bandwidth for dual-channel waveform capture. An integrated high-voltage protection module supports peak measurements up to ±400V and enables waveform screenshot saving for offline analysis.

Oscilloscope: Dual-channel input, 250MS/s sample rate, 50MHz analog bandwidth, 1Kpts storage depth, 1MΩ input impedance, time base range 10ns–20s, vertical sensitivity 10mV/div–10V/div (x1), trigger modes AUTO/Normal/Single, trigger types rising and falling edge, display modes Y-T / Rolling / X-Y, AC/DC coupling.

Multimeter: 4.5 digits with 19999 counts true RMS, supports AC/DC voltage and current, capacitance, resistance, diode, and continuity measurements for versatile diagnostic capability.

Signal Generator: Built-in DDS function outputs 13 waveform types with adjustable frequency, amplitude, and duty cycle; maximum output frequency 50kHz with 1Hz step resolution.

Additional features include a 2.8-inch 320×240 LCD, built-in 3000mAh rechargeable lithium battery with up to 6 hours standby (laboratory theoretical maximum), TYPE-C (5V/1A) charging, bilingual interface (Chinese and English), compact dimensions (167×89×35mm) and 300g weight for excellent portability. The combination of oscilloscope, multimeter, and signal generator functions in a single handheld instrument makes the FNIRSI-2C53T a practical tool for field service, bench testing, classroom demonstrations, and electronics troubleshooting.