User's Manual

18 Industrial CPT-8500 Reference Manual
IEEE 802.11b
When the 802.11b module is installed, the terminal can easily connect to legacy networks
through access points (APs). Roaming among different networks is possible.
 IEEE 802.11b is an industrial standard for Wireless Local Area Networking (WLAN),
which enables wireless communications over a long distance.
 The speed of connection between two wireless devices will vary with range and signal
quality. To maintain a reliable connection, the 802.11b system automatically fallback
from 11 Mbps to 5.5, 2 or 1 Mbps as range increases or signal quality decreases.
 An 802.11b network can operate in the following two modes:
Infrastructure mode - Wireless devices can communicate with each other or can
communicate with wired networks through APs.
Ad-hoc mode - Wireless devices or stations can communicate directly to each
other, without the use of APs.
802.11b Specification
Card type:
CF Type I
Frequency Range:
2.4 ~ 2.5 GHz
Modulation:
DSSS with DBPSK (1 Mbps), DQPSK (2 Mbps), CCK
Protocols:
IP/TCP/UDP
Maximum Output Power:
100 mW
Data rate:
11, 5.5, 2, 1 Mbps auto-fallback
Coverage:
250 meters line-of-sight
Connected devices:
Peer-to-Peer (no access point)
Server-to-Client (access point required)
Standard:
IEEE 802.11b, interoperable with Wi-Fi devices
Note: All specifications are subject to change without prior notice.