Networking Characteristics; Radio Characteristics - Dell TrueMobile 1180 User Manual

Networking characteristics

Compatibility
Network operating system
Host operating system
Media access protocol
Data rate
NOTE—The Dell TrueMobile 1180 internal 802.11b PC Card uses an automatic transmit rate select mechanism

Radio characteristics

Table 1. RF (radio frequency) band: 2.4 GHz (2400–2500 MHz)
Modulation technique
Spreading
Bit error rate (BER)
Nominal output power 15 dBm
Table 2. Range at various transmission rates
Transmission rate
Open office environment range
IEEE 802.11 standard for wireless LANs (DSSS)
Microsoft® Windows® Networking
Microsoft® Windows® XP, 2000
CSMA/CA (collision avoidance) with acknowledgment (ACK)
High
Medium
Standard 2 Mbps
Low
Direct sequence spread spectrum
CCK for high and medium transmit rate
DQPSK for standard transmit rate
DBPSK for low transmit rate
11-Chip Barker sequence
Better than 10–5
High speed
(11 Mbps)
207 m
(683 ft)
NDIS5 miniport driver
11 Mbps
5.5 Mbps
1 Mbps
Medium speed Standard speed
(5.5 Mbps) (2 Mbps)
297 m 400 m
(980 ft) (1300 ft)
Low speed
(1 Mbps)
550 m
(1750 ft)