Wireless handly terminal --BCP 840 data collector

BCP840 with Bluetooth & IrDA communication

A. Preface:

1. The demands for wireless communication are strong even for the mobile computers and Data collectors. It covers the Infra-red, WI-FI( 802.11b/11G…) Blutooth Class 2, Bluetooth Class I.

2. Birch is the pioneer company released the BCP840 with the Bluetooth Class 1 & IrDA communication in Taiwan.

B. Comparisons between the several wireless communications:

Bluetooth & 802.11b

	Bluetooth	802.11b
Channels	2.4---2.483GHz	2.4—2.483GHz
Channel Partition	79 channels	11—14 channels
Technology	FHSS, variable channels 1600 time/second	DSSS, fixed channel ( not variable)
Anti-Noise	Strong	normal
Speed	723 kbps	11Mbps
Power Management	Good( multi-protection)	normal
Peripherals Integration	Good( with any device with Bluetooth device)	None
Communication distance	Class 1: 100-270M Class 2: 10 M	100-25

Remarks:

1. FHSS has the automative variable channels swift function.

It can the Channel partition into 79 channels to avoid most of the interruptions and Noises.

2 .To work with any device which already has Bluetooth is another major

great advantage.

Bluetooth Class 1 & Class 2 communications

	Class 1	Class 2
Communication distance	100M	10M
Output power(dBm)	14	5
Sensitivity (dBm at room temperature).	89	83

C. Major function of BCP-840: 32 bit CPU, 20MB, backlit LCD, Backlit keycap, pen-base input & keycap( numeric/characters), programmed by C language, generator & brower( HTML), supports libray and xBase .auto-connection function on Access point.----