E-27
Performing Communications
Bluetooth
®
Communication
Bluetooth
®
interface can also be used to transfer data between two Smart Devices.
With Bluetooth
®
the two Smart Devices should be located within about fi ve meters from
each other, as long as there is nothing blocking the path between them.
Important!
Observe the following precautions to help ensure that Bluetooth communication is
successful.
• Make sure two Smart Devices face each other within fi ve meters. Surroundings
(obstacles) between the Smart Devices may cause a shorter distance.
• Make sure there is at least two meters between the Smart Device and other
equipment (electrical appliances, audio-visual equipment, OA equipment, and
digital cordless telephones, facsimile machines, etc.). Take special care with
microwave ovens. Allow at least three meters between the Smart Devices in
wireless operation and a microwave oven. When operating the terminal in
Bluetooth nearby these devices and electrical appliances with their powers being
turned on, communication may be interrupted or radio receptions may be
interfered.
• Normal communication may not be possible in an area near a broadcast
trans-mitter or wireless transmitter. If this happens, move the Smart Device to a
different location. Normal communication may not be possible in areas exposed to
strong radio waves.
• Interference by WLAN
Because Bluetooth
®
and WLAN use the same frequency band (2.4GHz), radio
interference can occur if there is a WLAN device nearby. This can result in lower
communication speed, or even make it impossible to establish a connection. If this
happens, try the following countermeasures.
• Move at least 10 meters away from the WLAN device.
• If you cannot keep the distance at least 10 meters or more between the Smart Device
and a WLAN device, turn off the power of either the Smart Device or the WLAN
device.
• If the Smart Device’s wireless LAN and Bluetooth® communication are used at the
same time, ambient radio signals may make communication impossible.
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