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This chapter introduces the Motorola CB3000 Client Bridge, and describes its operational environment and
its primary operating principles and features.
It includes the following sections:
•
General Overview
•
CB3000 Client Bridge Operational Principles
1.1 General Overview
The CB3000 Client Bridge is an IEEE 802.11a/b/g compliant wireless LAN Ethernet adapter. The CB3000
Client Bridge extends wireless networking capabilities to printers, scales, medical equipment,
manufacturing machinery, bar code readers, time clocks, point-of-sale and other data collection devices. It
provides a reliable, cost-effective interface between devices utilizing Ethernet ports and Motorola's wireless
LAN switches and access points.
Multiple devices can share one CB3000 Client Bridge using a 10BaseT Ethernet hub. This feature saves
equipment costs when several devices require wireless Ethernet connectivity. The CB3000 has an on-board
TCP/IP stack to provide a reliable transport mechanism. The CB3000 bridge can initiate a permanent client
connection to your server or accept datagrams from multiple sources. Use the CB3000 Client Bridge to
network devices that do not have a PC Card slot or PCI card slot (printers, scanners, Internet appliances etc.).
Up to 16 devices can be networked simultaneously by it.
The CB3000 Client Bridge uses frequency modulation to transmit digital data to the devices within its own
subnet. The transmission begins with a carrier signal that provides the center frequency. The digital data is
superimposed on the carrier signal (modulation). The radio signal propagates into the air as electromagnetic
waves.
The receiving antenna, in the path of the airwaves, absorbs the waves as electric signals. The receiving
device demodulates the signal by removing the carrier signal. The CB3000 Client Bridge uses the
environment as a transmission medium. The CB3000 Client Bridge can utilize both the 2.4 and 5.2 GHz
frequency ranges specified by IEEE.
Introduction
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