First, because the connection of the code scanning gun does not meet the transmission specifications:
At present, the common code scanning gun has three interfaces, including SCSI small computer standard interface, which connects to the device is ≤ 8, the usual transmission speed is 40M / S, generally linked to high-speed equipment. SCSI devices are more complex to install, in the computer if you do not add the SCSI card, easy to produce hardware conflicts, resulting in the inability to recognize the scanning gun;
Second, the bar code scanning gun or computer interface is loose:
Users only need to pull out the interface of the scanning gun, and then through the interface of the other equipment (PC) to test, through the exclusion method to determine whether the scanning gun interface is loose.
Third, the Bluetooth code scanner's inability to properly connect to the computer:
The cause analysis may be caused by Bluetooth mismatch, you need to insert the Bluetooth receiver provided by the manufacturer, and in accordance with the instructions to the device's system to set up and connect.