Hand Held Products 3800i Application Note

Also see for 2020-5B: User guide

Contents

Hand Held Products 3800i Application Note Manual pdf 8 page image

1 - 4 USB Interfaces User’s GuideCOM Port NamingWindows operating systems use COMxxx names to access the serial interfaces, with xxx representing a range of 1 to 255. Oncethe driver is installed (see COM Port Emulation Driver on page 1-4), the OS uses the next available COMxxx name and binds itto the new device. There are two different methods that can be used to assign a COMxxx name to a device. Scanning one ofthe bar codes below has the following effect:Using the serial number to bind a COMxxx name to a device is best for most users. If this method isnot used, the OS uses theUSB port tree to choose the COMxxx name, which is affected by the order in which each device is plugged in.If you are a distributor and connect a different device to your PC every hour, you probably want to use the USB Port NumberTree method (Serial Number OFF). To achieve this, the PC must either ignore the serial number, or the device must not publishit. On Windows 2000 and XP you have both options. The firmware has a menu setting that hides the serial number, so your PCuses the USB Port Number Tree method.SeeUSB Serial Number beginning on page 1-13 for more details about ignoring the serial number.Note: An asterisk (*) denotes the default setting.COM Port Emulation DriverHand Held Products provides a custom serial COM port emulation USB driver for use with its Adaptus Imaging Technologyproducts. This driver allows data transfer speeds of up to 7 meg-bits per second. The COM port emulation driver is required forWindows 2000 (see below), Windows XP (see page 1-7), and Windows 98 (see page 1-9).Windows 2000Hand Held Products provides a specific CDC driver for Adaptus Imaging Technology devices. When Windows asks for a driver,locate the filecdc.inf. The rest of the process is automated. The operating system uses the next available COM port number.Note: The COM port number is bound to the serial number of the device. Therefore, you can plug the device into any USB portwithout changing the COM port number.Note: COMxxx has a maximum of 256. Each time you try a device, your port number increases. Some programs cannot accesshigher numbered ports. See FAQs beginning on page 2-1 for further information.Serial Number ON Serial Number OFFThis device always has the same name. Name changes if USB port is changed.Replacing a broken device requires a manualchange of the COM Port name.Name changes if any USB hub is changed.Every new device uses a new COM port name. Name changes if USB host controller gets replaced.