Denso GT20Q-SB User Manual page 12

Wireless communication
This scanner (GT20Q-SB) is equipped with wireless facilities based on Bluetooth
Specifications
Radio output
Supported profiles
Communication distance
(reference value) (∗1)
(∗1) Values are for data sent through the scanner and communications adapter (BA20-RU
or BA11-RKU). Communication distance will vary depending on the device receiving
the communication and the operating environment.
Notes for using wireless communication
There may be times when communication is not possible due to the operating environment. Be mindful of the following
points and use the scanner in an environment where radio waves are stable.
• When using the scanner in close proximity of devices equipped with wireless LAN capabilities using the same frequency
band as the scanner (2.4 GHz), the generated radio interference may reduce transmission speed or make transmission
impossible.
• As the scanner uses the same 2.4 GHz frequency band as devices such as microwave ovens, industrial heaters, and high
frequency medical equipment, communication may not be possible when near these devices.
• Electromagnetic noise from computers, refrigerators, or other home appliances may make communication impossible when
nearby.
• Communication may not be possible in the following locations.
Locations near metal or in which there is a lot of metallic powder
Rooms enclosed by metallic walls
Locations which receive strong vibrations
• Although the general possible communication distance under the conditions in which that distance has been measured is
approximately ten meters (unobstructed), under other conditions, even communication within ten meters may not be
possible due to the device receiving the communication and the operating environment.
As there are individual variances in the possible communication distances of scanners, confirm that problem-free
communication is possible before implementation.
Note: To System Designers
• Before developing applications, make sure that the intended environment is free of the interference factors above and thus
actually capable of supporting link operation.
• If the enviromnent changes (e.g. newly installed electric equipments and movement / addition of shelves or objects), make
sure that the scanner communicates properly with all equipment again before actual use.
• Make sure that the scanner communicates properly with all equipment in the environment where other equipment using the
2.4 GHz band is already operated or newly added to the existing system.
Item
Bluetooth
Class 2 (maximum 2.5 mW)
Serial Port Profile/Human Interface Device Profile
Approximately 10 meters or more (unobstructed)
®
wireless technology.
Specifications
®
Specification Ver. 2.1+EDR standard
viii