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Basic System Operation
Cordless Base
The cordless base provides the link between the cordless image scanner and
the host system. The base contains an interface assembly and an RF commu-
nication module. The RF communication module performs the data exchange
between the cordless image scanner and the interface assembly. The control
assembly coordinates the central interface activities including: transmitting/
receiving commands and data to/from the host system, performing software
activities (parameter menuing, visual indicator support, power-on diagnostics),
and data translation required for the host system.
The base also is the image scanner’s battery charger. Refer to "Base Charge
Mode" on page 3-3 for additional information.
RF (Radio Frequency) Module Operation
The cordless system uses a two-way Bluetooth radio to transmit and receive
data between the image scanner and the base. Designed for point-to-point and
multipoint-to-single point applications, the radio operates using a license free
ISM band, which sends relatively small data packets at a fast data rate over a
radio signal with randomly changing frequencies, makes the cordless system
highly responsive to a wide variety of data collection applications and resistant
to noisy RF environments. Bluetooth Class 2 power level provides a communi-
cation range of 33 feet (10m) between the image scanner and base/Bluetooth
adapter, depending on the environment.
Cordless Image Scanner
The cordless image scanner enables fast and accurate bar code scanning
using a non-contact area image scanner.
The image scanner is comprised of an area image engine, a decode/control
assembly, and an RF communication module. The image engine performs the
bar code image illumination and sensing. The decode/control assembly coordi-
nates the central communication activities including: capturing and decoding
the bar code image data, performing software activities (parameter menuing,
visual indicator support, low battery indication), and data translation required for
the host system. The RF communication module performs the data exchange
between the image scanner and the base.