Hitachi 3000 user manual Built-in 2.4GHz band IEEE801.11b wireless LAN functions

Introduction

■Caution concerning interference with 2.4Ghz wireless LAN

When communicating with a 2.4GHz LAN, be careful about the following.

Microwave ovens and other industrial, scientific, and medical equipment, as well as indoor wireless stations (wireless stations requiring permits) and special low-power wireless stations (wireless stations not requiring permits) used for identifying mobile units used in plant manufacturing line etc., as well as amateur wireless stations (wireless stations requiring permits) operate in the frequency band used by this product.

zBefore using this product, double check that no indoor wireless stations, special low-power wireless stations for mobile unit identification, or amateur wireless stations are in operation in the vicinity.

zIf this product should cause harmful electromagnetic interference in an indoor wireless station for identifying a mobile unit, quickly change the frequency used or stop emitting the electromagnetic signal, then notify the store of purchase and consult with them about measures for avoiding interference (for example, installing a partition wall).

zBesides that, if this product should cause harmful electromagnetic interference in a special low-power wireless station used for identifying a mobile unit, or in an amateur wireless station, or some other problem occurs, please inquire at the store from which you made your purchase.

■Built-in 2.4GHz band (IEEE801.11b) wireless LAN functions

Usage frequency band	: Wireless equipment using the 2.4GHz band
Transmission method	: DSSS
Modulation	: DQPSK DBPSK CCK
Assumed interference distance	: 40 m max.

Frequency modulation advantages : The entire bandwidth can be used to avoid the frequency bands of indoor wireless stations and special low-power wireless stations used for identifying mobile units, as well as amateur wireless stations.

Because the 2.4GHz band frequency used in this product overlaps with medical equipment, microwave ovens and other industrial and scientific equipment, as well as indoor wireless stations and special low-power wireless stations for identifying mobile units used in plant manufacturing line etc., electromagnetic interference is possible. Before starting to use this product, double check that no indoor wireless stations or special low-power wireless stations are operating within the interference range of this product.

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