Denso AT21B-SM Manual do Utilizador descarregar pdf (Página 16)

3.2 Using the USB Interface

The scanner receives and sends data from/to the host computer through the USB-COM interface or USB

keyboard interface. You need to set up the device driver designed for the interface to be used.

Notes for connecting the USB interface cable

 To use the USB-COM interface, you need to install the serial port driver to the host computer before

connection of the USB interface cable. For details, refer to Section 3.2.1.

 When plugging and unplugging the USB connector, put an interval of at least 10 seconds between those

actions since Windows may take several to 10 seconds to add or delete the USB device.

 Hot plugging/unplugging is allowed for USB devices. However, do not plug or unplug the USB connector when:

- The computer is on standby (in suspend mode) or

- The COM port is open with the USB-COM interface being used. (Hot plugging/unplugging under this condition

will lose data.)

 When the host computer is processing the scanner connection, do not plug or unplug any other USB device

cables.

 Directly connect the scanner to the USB port on the host computer or to the self-powered hub. The scanner

may not be connected to some types of hubs. If the operation of the hub-connected scanner is unstable,

connect it directly to any USB port on the host computer.

 Do not use any extension cord.

USB interface cable

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