FNIRSI FNB-C2 USB Tester

The FNIRSI FNB-C2 USB tester is designed for accurate measurement and monitoring of electrical parameters in USB devices. This reliable diagnostic tool measures voltage, current, power, capacity, and other key metrics, making it ideal for testing chargers, cables, power banks, and mobile devices during daily use or technical maintenance. Precise analysis of power supply parameters, support for the latest fast-charging standards, and extensive diagnostic functions make the FNIRSI FNB-C2 a valuable tool for electronics engineers, service technicians, and DIY enthusiasts alike. The device allows you to analyze power parameters, USB-C cables, and the charging process. It offers a wide measurement range up to 240 W, a data logging function, power quality analysis, and the ability to read information stored in USB-C cables. The package is rounded out by a clear HD display with automatic screen rotation and seamless integration with computers without the need to install additional drivers.

Advantages

The FNIRSI FNB-C2 uses an external 20-bit analog-to-digital converter, which ensures high measurement accuracy and allows results to be displayed with up to seven significant digits. The tester measures voltage, current, and power with high precision, allowing you to analyze even very slight changes in power supply parameters. Operational safety is enhanced by a built-in temperature sensor that monitors the device’s temperature in real time. The tester supports the Power Delivery 3.1 EPR standard using a dedicated chip responsible for protocol communication, ensuring stable compatibility with modern chargers. It automatically recognizes and activates popular fast-charging technologies. Furthermore, the device records measurement results in independent sets of statistics covering capacity, energy, and runtime to automatically calculate battery capacity and charging efficiency.

Suitable for

• Testing USB chargers and adapters
• Checking power banks and mobile devices
• Evaluating USB-C cables and E-Marker chip data
• Monitoring fast-charging protocols
• Measuring voltage and current ripple

When it may not be suitable

This USB tester is not designed for high-voltage industrial electrical installations exceeding standard USB limits. It may also not be necessary for casual users who only require basic charging without the need for detailed parameter analysis or protocol diagnostics.

Key specifications

• Voltage monitoring range from 4 to 50 V
• Current monitoring range up to 6.5 A
• Power monitoring range up to 240 W
• 20-bit analog-to-digital converter
• 1.54-inch color TFT-LCD display with 240 x 240 resolution
• D+/D- and CC1/CC2 voltage measurement support
• Device temperature monitoring
• Capacity and energy consumption recording

How to use

Connect the FNIRSI FNB-C2 USB tester between your power source and the device you wish to test using the standard USB-C connectors. The color display will automatically activate and show real-time voltage, current, and power measurements. Use the control buttons to navigate through menus, view statistics, check fast-charging protocols, or analyze E-Marker chip data from USB-C cables. For advanced data logging and waveform analysis, you can connect the tester to a Windows or macOS computer via USB without installing extra drivers.

What to consider before purchase

• Verify that your devices operate within the 4 to 50 V voltage range and do not exceed 6.5 A or 240 W
• Check if you need advanced features like protocol triggers and waveform analysis for your diagnostic tasks
• Ensure compatibility with your operating system if you plan to connect the device to a computer for data management

For accurate and safe measurements, always ensure that the connected devices comply with the technical specifications of the FNIRSI FNB-C2 USB tester and avoid exposing the device to moisture or extreme temperatures during operation.