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Chapter 3 Communications Operations of the BHT
3.2 Infrared Communication
The BHT has an integrated infrared (IR) communications device which enables wireless transfer of
programs and data between the BHT and the host computer and between the BHTs, instead of the
conventional wire transfer.
The IR communications device features the following:
• Wireless communications
• Small and lightweight design
• Freedom from the codes/regulations and licenses which differ from country to country, unlike
radio devices
The BHT may communicate with other IrDA-compliant equipment just by aligning their IR ports with each
other. The effective IR range and IR port angle may differ depending upon the target equipment, so
observe the instructions given in manuals furnished with such equipment.
If IR transfer fails, bring the BHT closer to the target station or change the IR port angle, and try
again.
The BHT's IR communications device is IrDA-compliant. IrDA stands for Infrared Data Association,
which has defined hardware (IrDA Serial Infrared Physical Layer Link) and communications protocols for
IR communications.
The BHT's physical layer complies with the IrDA1.2, with a maximum transfer distance of 0.15 m (5.9
inches) and maximum transmission rate of 115.2 kbits per second.
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