FNIRSI DSO-TC4 3-in-1 digital oscilloscope, signal generator and transistor tester

The FNIRSI DSO-TC4 is a compact, battery-powered 3-in-1 test instrument combining a digital oscilloscope, a waveform signal generator, and a transistor/component tester in a single handheld unit. Designed for electronics engineers, technicians, and hobbyists, it delivers professional-grade measurement capability in a portable form factor with a 2.8-inch TFT colour display and a built-in 1500mAh rechargeable lithium battery.

Oscilloscope Function

• Sampling rate: 48 MSa/s
• Analog bandwidth: 10 MHz
• Input voltage protection: ±400V
• Waveform storage: screenshot saving and recall for data analysis
• Trigger modes: auto, normal, single
• Time/div and voltage/div adjustable

Signal Generator Function

• 13 waveform types (sine, square, triangle, sawtooth, and more)
• Frequency range: 0 – 50 kHz
• Output voltage: adjustable 0 – 3V
• Adjustable parameters: frequency, amplitude, duty cycle

Transistor / Component Tester Function

• Automatically identifies component type and pin arrangement
• Supports: NPN/PNP transistors, MOSFETs, JFETs, diodes, Zener diodes, capacitors, resistors, inductors, thyristors (SCR), triacs
• Displays component parameters on screen

General Specifications

• Display: 2.8-inch TFT colour screen
• Battery: built-in 1500mAh rechargeable lithium battery
• Battery life: approximately 4 hours continuous use
• Charging: via USB
• Portable and lightweight — suitable for field and bench use

Applications:

• Circuit debugging and waveform analysis
• Component identification and testing
• Signal injection and frequency testing
• Electronics repair and maintenance
• R&D prototyping and lab work