Bluetooth
®
Wireless Communication Link
The Bluetooth
®
adapter BA20-RU uses Bluetooth
®
wireless networking technology.
Item
Specifications
Standard
Bluetooth
®
Specification Ver. 2.1 + EDR
Radio output
Class 2 (maximum 2.5 mW)
Profile(s) supported
Serial port profile
Communications range (reference value*
1
)
Max. 10 m, with no obstructions
*1 This is a value for the communication between the Bluetooth
®
adapter and the DENSO WAVE wireless scanner.
Communication range varies depending on the device to communicate with and operating environment.
Wireless networking requires a stable radio environment. Not all operating environments provide this. In particular,
note that
•
Using the Bluetooth
®
adapter in close proximity to other wireless LAN equipment operating in the same frequency
band (2.4 GHz) risks radio interference that can reduce throughput or even entirely block wireless networking.
•
Microwave ovens, industrial heating equipment, high-frequency medical equipment, and other equipment using the
2.4 GHz band can sometimes block wireless networking.
•
Electromagnetic noise from computers, refrigerators, and other home appliances can sometimes block wireless
networking.
•
The following environments can sometimes block wireless networking.
- Metal objects or particles in the vicinity
- Metal walls around the area
- Excessive vibration
•
The communications range of 10 m given above is merely a reference value assuming a clear line of sight. Reliable
wireless networking is by no means guaranteed at 10 m for all combinations of equipment used and operating
environments. Some combinations might even work for greater distances, but be sure to confirm that the Bluetooth
®
adapter link operates properly before introducing the link operation.
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.
•
When introducing the Bluetooth
®
adapter into an environment where equipment using radio waves in the
2.4 GHz band operates or when introducing such equipment after the introduction of the Bluetooth
®
adapter, be sure to confirm that the adapter radio link operates properly with all equipment being in
operation beforehand.
•
If the environment of the radio communications system is changed after the introduction (e.g., newly
installed household appliances and movement/addition of shelves or objects), then confirm that the radio
link operates properly again before the actual use.
v