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4. PRODUCT OUTLINE
Refrain from using the GM in proximity to televisions and radios.
• Televisions and radios use a different frequency band to Bluetooth/Wireless LAN communications.
However, even if the GM 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 GM) 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 GM 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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