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Bluetooth Wireless Technology
• Bluetooth function may not be built in depending on telecommunications regulations of the country or the
area where the instrument is purchased. Contact your local dealer for the details.
• Use of this technology must be authorized according to telecommunications regulations of the country where
the instrument is being used. Contact your local dealer in advance.
• TOPCON CORPORATION is not liable for the content of any transmission nor any content related thereto.
When communicating important data, run tests beforehand to ascertain that communication is operating
normally.
• Do not divulge the content of any transmission to any third party.
Radio interference when using Bluetooth technology
Bluetooth communication with the ES uses the 2.4 GHz frequency band. This is the same band used by the
devices described below.
• Industrial, scientific, and medical (ISM) equipment such as microwaves and pacemakers.
• portable premises radio equipment (license required) used in factory production lines etc.
• portable specified low-power radio equipment (license-exempt)
• IEEE802.11b/IEEE802.11g standard wireless LAN devices
The above devices use the same frequency band as Bluetooth communications. As a result, using the ES within
proximity to the above devices may result in interference causing communication failure or reduction of
transmission speed.
Although a radio station license is not required for this instrument, bear in mind the following points when using
Bluetooth technology for communication.
Regarding portable premises radio equipment and portable specified low-power radio equipment:
• Before starting transmission, check that operation will not take place within the vicinity of portable
premises radio equipment or specified low-power radio equipment.
• In the case that the instrument causes radio interference with portable premises radio equipment,
terminate the connection immediately and take measures to prevent further interference (e.g. connect
using an interface cable).
• In the case that the instrument causes radio interference with portable specified low-power radio
equipment, contact your local dealer.
When using the ES 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.
Do not use the ES 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 ES in proximity to televisions and radios.
• Televisions and radios use a different frequency band to Bluetooth communications.
However, even if the ES is used within proximity to the above equipment with no adverse effects with
regard to Bluetooth communication, moving a Bluetooth compatible device (including the ES) 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.
"25. REGULATIONS"
vii
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