2. PRECAUTIONS
4
•IEEE802.11b/IEEE802.11g standard wireless LAN devices
The above devices use the same frequency band as
Bluetooth
communications. As a result, using the
RC controller 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 Sokkia agent.
●
When using the RC controller 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 RC controller 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 RC controller in proximity to televisions and radios.
• Televisions and radios use a different frequency band to
Bluetooth
communications.
However, even if the RC controller is used within proximity to the above equipment with no adverse
effects with regard to
Bluetooth
communication, moving a
Bluetooth
compatible device (including
the RC controller) 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
• When using in conjunction with a total station, perform communication within a line-of-sight distance
of approximately 300m. The usable range becomes shorter when obstacles block the line of sight,
or devices other than total stations, such as PDAs or computers, are used. Wood, glass and plastic
will not imped
e 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. For best
results make sure that the antennas of both the RC controller and the companion device are
pointing towards one another.
