Rf (Radio Frequency) Module Operation; Scanner - Intermec Sabre 1552 Scanner System Manual

Sabre 1552 Scanner and MicroBar 9745 Base Station System Manual
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A 50 foot (minimum) radius is maintained in most environments. For optimal performance, signals between the base and
its scanners need a clear path to communicate, free from RF interference.
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RF (Radio Frequency) Module Operation

The Cordless System uses a state of the art 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) in a half
duplex (2 way) communications mode. The radio operates using a license free, low
power, 2.4 GHz spread spectrum (frequency hopping) technique. This transmission
technique, 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.

Scanner

The scanner enables bar code scanning by using scan engines, real time decoding, and
host connectivity within a 15.24 meter (50 foot)
initial bar code data acquisition function and communicates to the base. The scanner
comprises a scan engine, a decode/control assembly, and an RF communication module.
The scan engine performs the bar code image illumination and detection. 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.
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radius of the base. It provides the