Features 20-bit High-Precision ADC Measurement: Adopts an external 20-bit high-precision ADC chip, supporting 7-digit display for voltage, current and power with a resolution of 0.000001V/A/W and lab-grade accuracy. Wide Range of Measurement Metrics: Enables monitoring of 4~50V voltage, 0~6.5A current and 0~240W power, compatible with 100W/140W/240W high-power charging scenarios. PD3.1 and Multi-Protocols Compatibility: Fully supports PD3.1 EPR protocol with external physical chip for PD communication, realizing stable and safe fast-charging protocol interaction. Comprehensive Fast-Charging Protocol Detection: Automatically detects and triggers mainstream protocols including UFCS, QC2.0/3.0/4/5, Huawei FCP/SCP, OPPO VOOC/SVOOC and VIVO VFCP. USB-C E-Marker Chip Identification: Reads detailed information of 3A/5A/50V/EPR/TBT3/TBT4 cables such as type, power, length, transmission speed and version. Double-Mode Ripple and Waveform Testing: Supports low-speed waveform drawing (2sps~1Ksps) for voltage/current/D+/D- and high-speed ripple testing (20Ksps~2Msps) for AC-coupled voltage. Real-Time VBUS Waveform Monitoring: Displays USB power bus voltage waveform with adjustable frequency from 20.0KHz to 2.0MHz for intuitive power stability judgment. PD Protocol Monitoring and Packet Capture: Captures real-time PD protocol negotiation data between charging and powered devices to troubleshoot charging compatibility issues. QC to PD Protocol Conversion: Realizes adaptation between QC-only devices and PD-dominant chargers to improve fast-charging compatibility across different protocols. Multi-Group Energy and Capacity Statistics: Provides 10 switchable sets for capacity, electricity and time statistics, supporting automatic calculation of battery capacity and conversion efficiency. Long-Time Curve Recording Function: Enables 9-hour continuous recording of voltage and current curves with customizable data saving interval of 1~120 seconds and adjustable start/end rules. Bidirectional Current USB-C Interface: Equips standard USB-C 24-PIN male and female ports with USB 4 Gen3 features, supporting bidirectional current and reversible insertion. Onboard Temperature Real-Time Monitoring: With 1℃ resolution, it monitors the device's working temperature in real time to prevent high-temperature risks during high-power operation. HD Display with Gravity Sensor Rotation: Features a 1.54-inch 240×240 TFT-LCD screen and built-in gravity sensor supporting 4-directional automatic screen rotation for all interfaces. Driver-Free PC Connection and Upgrade: HID PC port is compatible with Windows/Mac OS without drivers, supporting function expansion and one-click firmware upgrade via USB disk recognition. USB-C Cable Simulation Test: Simulates various cable configurations such as NO E-marker(60W), 20V5A(100W) and 50V5A(240W,EPR) to test charging performance under different conditions. Customizable Device System Settings: Supports adjustment of screen brightness, auto dim, theme color and language, with one-click reset of all settings to factory defaults. Specifications ✦ Accuracy: ±(a%(‰) of reading + N digits) Model FNIRSI-C2 ADC 20-Bit Monitoring Voltage Range: 4 ~ 50VResolution: 0.000001VAccuracy: ±(0.2‰+2) Monitoring Current Range: 0 ~ 6.5AResolution: 0.000001AAccuracy: ±(0.5‰+2) Monitoring Power Range: 0 ~ 240WResolution: 0.000001WAccuracy: ±(0.5‰+2) D+/D− Voltage Range: 0 ~ 3.3VResolution: 0.001VAccuracy: ±(1.0%+2) CC1/CC2 Voltage Range: 0 ~ 3.3VResolution: 0.001VAccuracy: ±(1.0%+2) Device Temperature Range: ℃Resolution: 1℃Accuracy: ±(1.2%+3) Capacity Range: 0 ~ 9999.99AhResolution: 0.00001Ah Energy Consumption Range: 0 ~ 9999.99WhResolution: 0.00001Wh Recording Time Range: 9 h 0 m 0 sResolution: 1 s Package List: ◉ FNIRSI-C2 USB-C Tester *1◉ Gift Box *1◉ User Guide *1
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