5.2 Interfacing with the Host
5.2.1 USB keyboard interface
The USB keyboard interface requires no dedicated device driver. Data read by the scanner can be entered to the cursor
position in your applications.
The USB keyboard interface operates in conformity with the following:
- Universal Serial Bus (USB) Device Class Definition for Human Interface Devices (HID) Version 1.11
- Universal Serial Bus (USB) HID Usage Tables Version 1.11 keyboard
(1) Caps mode and host's Caps Lock state
The "Caps mode" parameter determines whether or not to automatically detect the Caps Lock state of the host's
keyboard (default: Auto setting). If it is set to "Auto setting," a change in the host's Caps Lock state is automatically
reflected in the Bluetooth
®
adapter's setting.
If the "Caps mode" parameter is set to "Manual setting," be sure to manually set the "Caps Lock of host's keyboard"
parameter to match the host's keyboard state (default: OFF).
(2) Keyboard type
Select the type of the connected keyboard. (Default: Type 106, japanease)
Improper setting may cause the computer to fail to receive data correctly.
(3) Data transmission interval
When the Bluetooth
®
adapter sends a large volume of data in succession or it is connected to a computer whose
processing speed is low, the computer may cause a data overflow and issue an alarm error. To avoid it, there are
choices for transmission interval, ranging from 3 ms to 100 ms (default: 3 ms).
5.2.2 USB-COM interface
Installing our virtual COM port driver "Active USB-COM port driver" to the host computer enables the Bluetooth
®
adapter to operate with communications software using a conventional serial port.
The virtual COM port on the computer and the Bluetooth
®
adapter are connected with each other as shown below.
Computer
Bluetooth
adapter
TxD
RxD
RxD
TxD
RTS
CTS
CTS
RTS
The configuration software BA Setting* provides two choices of the CTS signal monitor--enable and disable.
The USB-COM device driver emulates the communications settings (e.g., transmission speed, data bits, parity, and
stop bits) of communications software using an serial port, so no communications setting is required for the
Bluetooth
®
adapter.
(1) Monitoring CTS signal
The configuration software “BA Setting*” provides two choices of the CTS signal monitor--enable or disable.
Enabling the CTS signal monitor does not output data when the RTS signal at the host is disabled. At the Bluetooth
®
adapter, the RTS signal is usually enabled and it becomes disabled when the Bluetooth
®
adapter is not ready to receive
data, e.g., due to a Bluetooth
wireless link not established with the target device.
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