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More about bluetooth, Technology, continued, Acquisition and operational transmission ranges – Fairbanks BlueLineFS Scale System User Manual

Page 19

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Section 3: Bluetooth communications

8/09

19

51198 Rev. 2

More about

Bluetooth

®

Technology, Continued

Bluetooth

®

Technologies core system consists of a RF (radio frequency)

transceiver, which is the component that sends and receives the wireless signal.

─ The system offers services that enable the connection of devices and the

exchange of a variety of data classes between these devices.

─ The system operates in an unlicensed radio band. It also incorporates the use

of a broadband spectrum which allows the signal to hop from one frequency
band to another.

─ If a band is being used, or is “noisy,” then the wireless signal switches to a

band that is not being used by other RF devices, or has less interference.

─ This “hopping” also provides a high level of security, since with ever-changing

output, it is difficult for external devices to isolate or “pirate” the signal.

─ It checks frequency bands 1600 times per second.

Acquisition and Operational Transmission Ranges

The BlueLine

has an acquisition range of approximately

fifty feet

(

50’

), with

an operational range of up to

one hundred feet

(

100’

).

Acquisition Range is the area where the platform and Indicator’s signals are

“paired” or find each other.

Operational Range is the area where the floor scale and Indicator operate

after “pairing” has occurred.

ƒ

If the signal is lost because the floor scale and Indicator are outside of the

operational range (or due to interference), then the operator brings the display
back within the acquisition range.

ƒ

The intuitive BlueLine

reacquires the signal automatically.