4. PRODUCT OUTLINE
17
Refrain from using the DS in proximity to televisions and radios.
• Televisions and radios use a different frequency band to Bluetooth/Wireless LAN
communications.
However, even if the DS is used within proximity to the above equipment with no adverse effects
with regard to Bluetooth/Wireless LAN communication, moving a Bluetooth/Wireless LAN
compatible device (including the DS) 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 wireless 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 wireless antenna can have adverse effects upon usable range.
Reduced range due to atmospheric conditions
• The radio waves used by the DS 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/Wireless LAN
products on the market.
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