Introduction: The UT658 series second-generation USB tester is a new type of instrument for the quality inspection of chargers, mobile power supplies, data lines and other charging devices for 3C products. The output voltage, output current, output power, capacity, loop equivalent resistance, and USB data transmiion line voltage of the 3C product charging device are all tested. This product has high precision, reliability, stability, small size, convenient and flexible use, and can be widely used in factory verification, digital enthusiasts and engineers. Features: Type-A interface The same screen shows voltage, current, power, capacity, etc. 10 sets of data storage Loop equivalent resistance measurement (1-480) CE certification Support fast charge protocol (QC1.0/2.0/3.0Type-A) With a maximum 3A working current electronic load (LOAD version) Technical Parameter Function Description UT658A UT658C UT658Dual UT658Load Input and output interface USB TypeA USB TypeC Voltage measur- ement range 4.00-24.00VDC, resolution:0.01V Current measur- ement range 0.0-3.00ADC, rsolution:0.01A(TypeA) 0.05-5.00ADC, resolution:0.01A(TypeC) capacity 099999mAh, resolution: 1mAh Electricity 0-1000Wh Loop equivalent resistance measurement 4800-01-01 USB data transmi sion line voltage (D+D-) 0-3.30V storage 10 sets of data Electronic load 0.50A,1.00A2.00A3.00A Timing 99 hours, 59 minutes, 59 seconds, resolution:1s Support fast charge agreement SupportUSB2.0 data transmiion function, supportQC1.0/2.0/3.0fast charging protocol(TypeA) SupportUSB2.0 data transmiion function, supportQC1.0/2.0/3.0 fast charging protocol(TypeA) Certification CE certification