Using Radio Link And Bluetooth ® Wireless Communication Link - Denso BHT-300BWB Operator's Manual

Using Radio Link and Bluetooth
Communication Link
The BHT-300BWB supports Bluetooth
• If there are too many communications errors, first make sure that the BHT shall
be directed at the target Bluetooth
access point because the 2.4 GHz band requires a more or less straight line path.
Note also that the low-power radio waves have trouble passing through human
bodies and other obstacles along that path.
• The communication link will not operate properly in the vicinity of microwave
ovens, industrial heaters, high-frequency medical equipment, wireless LAN-
enabled devices, and other sources of radio waves in the 2.4 GHz band.
• Electromagnetic noise from personal computers, refrigerators, and other home
appliances can also interfere with link operation.
• Environmental factors that can also interfere with link operation include large
metallic objects, metallic dust, or metallic walls in the vicinity of the path and
vibration at either end.
To System Designers:
• Before developing the application, make sure that the intended
environment is free of the interference factors above and thus actually
capable of supporting link operation.
• Assume that there will be communications failures requiring robust retry
capabilities in the software.
• When introducing the BHT link operation into an environment where
equipment using radio waves in the 2.4 GHz band operates or when
introducing such equipment after the introduction of the BHT link
operation, be sure to confirm that the BHT radio link operates properly
with all equipment being in operation beforehand.
• If the environment of the radio communications system is changed after
the introduction (e.g., newly installed household appliances and
movement/addition of shelves or objects), then confirm that the radio link
operates properly again before the actual use.
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wireless data communication.
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wireless communication equipment such an
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Wireless