FNB58 USB tester is a high-reliability, high-safety USB voltage andcurrent detection meter and a mobile communication terminal fast chargingtrigger.

It has a 2.0-inch full-color ultra-wide viewing angle TFT LCD display, integrated USB-A, Micro-USB, Type-C interface.

Use external 16-bit ADC, PD protocol physical chip.

It can be used to measure the power supply or power consumption of products such as USB interfaces, mobile phone chargers, and U disks.

It can be used to measure the charging power of mobile phones and the input and output of mobile power supplies.

It can be used to test the fast charging protocol of chargers.

This instruction manual includes relevant safety information, warningtips and solutions to common abnormal situations.

Please read the relevantcontent carefully and strictly abide by all warnings and precautions.

Do not connect the monitoring interface to a power supply exceeding 28V.

Do not connect the PC connection port to a power source exceeding 16v.

Only one pair of monitoring interfaces (one input port,one outputport) can work at the same time. When there is a pair of monitoring interfaces working, it is forbidden to connect to the equipment onother monitoring interfaces. (Except the PC connection port, the PC port can be connected to an external power supply).

When using the fast charge trigger module,please do not connect equipment that cannot withstand high voltage to any monitoring interface.

After using the PD trigger/monitor/conversion/read E-Marker cablefunction, please turn the PD communication switch in the lower rightcorner back to the OFF position.

Do not charge the phone after the fast charge is triggered.