Hand Held Products SCANTEAM 2070 BASE, Manual

Page: 19 / 132

1–9 Cordless System Manual
Basic Operation of the Cordless System
The following system block diagrams (on this and the following page) illustrate
the basic operating components of the Cordless System.
Base Housing
RF Module
international
Antenna
Control/Interface Assembly
(Base Circuit Board)
Cordless Base
The Cordless Base provides the link between the Cordless Scanner and the host
system. The base contains a control/interface assembly and an RF
communication module. The RF communication module performs the data
exchange between the Cordless Scanner and the control/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.
Cordless Base
Control
User I/O
Host I/O
Menu I/O
Multipoint
LED
I/O Ports
RF Host
Power Aux
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.
(See page 7–5 for a
chart of regulatory and safety agency approvals.)