FNIRSI 2C23T: 3-in-1 Digital Oscilloscope, Multimeter & DDS Generator | 2 CH, 10 MHz, 50 MSa/s

Meet the FNIRSI 2C23T: a true 3-in-1 instrument

In a compact handheld package, the FNIRSI 2C23T combines an oscilloscope, a 4-digit multimeter, and a DDS signal generator. It offers two channels for simultaneous signal observation, a 10 MHz bandwidth, and a 50 MSa/s sampling rate to capture fast edges with clarity. The unit records up to 32 KB of waveform data per session and supports waveform image storage and export for documentation or collaboration. With a max input/measurement voltage up to 400 V and vertical sensitivity options from 0.2 mV/div to 10 V/div, you can scale your view to reveal the tiniest details or expansive waveforms.

In practice, the oscilloscope mode lets you view two signals side by side, compare a reference waveform with live measurements on the same screen, and quickly scroll through captured data. The automatic measurement functions help you extract key parameters without manual math, aiding quick checks during prototyping, power supply tuning, or servo testing.

Multimeter capabilities you can rely on

• 4-digit resolution for precise readings
• Wide ranges for AC/DC voltage, DC/AC current, resistance, and capacitance
• Continuity testing for fast circuit checks

In the Multimeter mode, you get 4-digit resolution and a wide range: AC/DC voltage, DC/AC current, resistance, capacitance, and continuity. This makes it suitable for electronics labs, hobby projects, and on-site repairs where you need immediate, readable numbers.

Signal generator and waveforms

• Maximum output frequency up to 2 MHz
• Seven waveform options: sine, square, triangle, full, half, noise, DC

The 2 MHz signal generator supports versatile waveforms, enabling quick tests of filters, amplifiers, and microcontroller timing without external equipment.

Save, compare, and connect

• One-click save and screenshot management
• PC data cable transfer to review and compare waveforms

Save functions let you capture and compare waveforms, helping you track changes across iterations. Connecting to a PC via a data cable lets you upload saved images and compare measured versus reference signals on the same screen.

Hardware design and power

Built around an FPGA+MCU+ADC core, the unit includes a high-voltage protection module, a bright 2.8 inch LCD, and a robust 3000 mAh Li-ion battery. Expect several hours of use between charges, depending on mode and sampling rate.

These design choices support fieldwork, classroom demonstrations, and on-desk prototyping, offering a practical balance of capability and portability.