Bluetooth™ wireless communications, Master, Client) – Zebra Technologies XiIIIPlus User Manual

Page 24: Slave, Server

Advertising
background image

O-18

UMAN-CM2/3

Bluetooth™ Wireless Communications

“Bluetooth” is a worldwide standard for the exchange of

data between two devices via radio frequencies.
Bluetooth radios are relatively low powered to help pre-
vent interference with other devices running at similar
radio frequencies. This limits the range of a Bluetooth
device to about 10 meters (about 32 feet).

Exposure to Radio Frequency Radiation

The radiated output power of this internal wireless radio is
far below the FCC radio frequency exposure limits. Never-
theless, this Bluetooth radio must be used in such a man-
ner that the antenna is 2.5 cm or further from the human
body.
The radio and antenna are mounted internally in this
printer in such a way that, when the printer is used in a
standard configuration (belt clip, soft case, shoulder
strap), the 2.5 cm distance from the users body will be
met. Do not use the printer in an unauthorized manner.
The internal wireless radio operates within guidelines
found in radio frequency safety standards and recom-
mendations. The level of energy emitted is far less than the
electromagnetic energy emitted by wireless devices such
as mobile phones.

In order to exchange data, two Bluetooth enabled

devices must establish a connection. Bluetooth software
is always running in the background, ready to respond to
connection requests. One device (known as the

master

or the

client)

must request a connection with another.

The second device (the

slave

or the

server

) then accepts

or rejects the connection. A Bluetooth enabled Cameo
will always act as a slave device. The miniature network
created by this connection is sometimes referred to as a
“piconet” and in theory can consist of several Bluetooth
enabled devices.

Each Bluetooth Cameo has a unique Bluetooth Device

Address (BDA) loaded into its radio module when manu-
factured.

Advertising