a. Check whether the equipment is effectively grounded.
b. Check the interference source on the equipment site and do shielding treatment.
c. Check the wiring method of the equipment, and the weak current and strong current of the equipment are required to be wired separately, and isolation protection should be done.
d. Check whether there is vibration during the work of the device, and strengthen the stability of the physical connection of the USB.
e. Measure the supply voltage and check whether there is a problem with the fluctuation of the power grid.
f. Update the control card driver and replace the USB port of the computer.
g. Dust removal for the marking card, and dust removal protection for the equipment.