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RW 420 User Guide
Wireless Communications
Wireless Communications with Bluetooth
®
The following section only applies when the ZBR3 Bluetooth Radio
(FCC ID: I28MD-BTC2TY2) is installed in a RW 420. The antenna used for this transmitter
must not be co-located or must not operate in conjunction with any other antenna.
“Bluetooth” is a worldwide standard for the exchange of
data between two devices via radio frequencies. Bluetooth
radios are relatively low powered to help prevent interfer-
ence with other devices running at similar radio frequencies.
This limits the range of a Bluetooth device to about 10 meters
(about 32 feet).
Both the printer and the device it communicates with must
follow the Bluetooth standard.
Bluetooth Networking Overview
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 an-
other. The second device (the slave or the server) then accepts
or rejects the connection. A Bluetooth enabled RW 420 print-
er will normally act as a slave creating a miniature network
with the terminal sometimes referred to as a “piconet.”
For the most part, communications using Bluetooth are initi-
ated and processed without any operator intervention.
Each Bluetooth enabled RW 420 printer has a unique Blue
-
tooth Device Address (BDA) loaded into its radio module
when manufactured.
Exposure to Radio Frequency Radiation
The radiated output power of this internal Bluetooth radio is far
below the FCC radio frequency exposure limits. Nevertheless,
this Bluetooth radio must be used in such a manner that the
antenna is 2.5 cm. or further from the human body.
The radio and antenna are mounted internally in this printer
such that when the printer is worn with the back of the printer
vices. (USB drivers are included in the Zebra Universal Driver
which can be downloaded from www.zebra.com/drivers.) Other
terminals or communications devices may require the installa-
tion of special drivers to use the USB connection. Consult the
factory for further details.