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RF (Radio Frequency) Module Operation
The cordless system uses a state-of-the-art two-way 2.4 GHz frequency-hopping
spread spectrum radio to transmit and receive data between the scanner and the
base. Designed for point-to-point and multipoint-to-single point applications, the
radio transmits data at a rate of 1 megabit per second (Mbps). 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.
The RF radio used in the cordless system has been tested and approved as
complying with the two leading standards-setting organizations that serve as
regulatory models for compliance in most countries. In North America, the radio
is approved under the standards in FCC B Part 15.249 regulations and, in
Europe, under the standards in ETS 300 328 regulations.
Cordless Scanner
The cordless scanner enables fast and accurate bar code scanning using a non-
contact linear imager or laser input engine. The scanner maintains radio
communication with the base unit up to 100 feet (30m) depending on the
environment.
The scanner is comprised of a linear imager or laser scan engine, a decode/
control assembly, and an RF communication module. The scan engine performs
the bar code image illumination and sensing. The decode/control assembly
coordinates 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 scanner and the base.
Summary of Contents for IMAGETEAM 3870
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