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4. CX FUNCTIONS
When using the
CX
in proximity to IEEE802.11b or IEEE802.11g
standard wireless LAN devices, turn off all devices not being used.
• Interference may result, causing transmission speed to slow or even disrupting
the connection completely. Turn off all devices not being used.
Do not use the CX in proximity to microwaves.
• Microwave ovens can cause significant interference resulting in communication
failure. Perform communication at a distance of 3m or more from microwave ovens.
Refrain from using the CX in proximity to televisions and radios.
• Televisions and radios use a different frequency band to
Bluetooth
communications.
However, even if the CX is used within proximity to the above equipment with
no adverse effects with regard to
Bluetooth
communication, moving a
Bluetooth
compatible device (including the CX) closer to said equipment may
result in electronic noise in sound or images, adversely affecting the
performance of televisions and radios.
Precautions regarding transmission
For best results
• The usable range becomes shorter when obstacles block the line of sight, or
devices such as PDAs or computers are used. Wood, glass and plastic will not
impede communication but the usable range becomes shorter. Moreover,
wood, glass and plastic containing metal frames, plates, foil and other heat
shielding elements as well as coatings containing metallic powders may
adversely affect
Bluetooth
communication and concrete, reinforced concrete,
and metal will render it impossible.
• Use a vinyl or plastic cover to protect the instrument from rain and moisture.
Metallic materials should not be used.
• The direction of the
Bluetooth
antenna can have adverse effects upon usable range.
Reduced range due to atmospheric conditions
The radio waves used by the CX may be absorbed or scattered by rain, fog, and
moisture from the human body with the limit of usable range becoming lower as a
result. Similarly, usable range may also shorten when performing communication in
wooded areas. Moreover, as wireless devices lose signal strength when close to
the ground, perform communication at as high a position as possible.
• TOPCON CORPORATION cannot guarantee full compatibility with all
Bluetooth
products on the market.