Toshiba Satellite 2430-301 - Manual (Page 200)

Wireless LAN
Satellite 2430 Series K-3
Satellite 2430 Series Version
1
Last Saved on 04/04/2003 13:35
ENGLISH using Euro_M.dot –– Printed on 04/04/2003 as IM_243EN
Radio characteristics
R-F Frequency Band 2.4GHz (2400-2483.5 MHz)
Modulation
Technique Direct Sequence Spread Spectrum
■ CCK for High & Medium Transmit Rate
■ DQPSK for Standard Transmit Rate
■ DBPSK for Low Transmit Rate
Spreading 11-chip Barker Sequence
Bit Error Rate (BER) Better than 10-5
Nominal Output
Power 15 dBm
High Speed Medium
Speed Standard
Speed Low Speed
Transmit Rate 11 Mb/s 5.5 Mb/s 2 Mb/s 1Mb/s
Receiver Sensitivity -83 dBm -87 dBm -91 dBm -94 dBm
Delay Spread
(at FER of <1%) 65 ns 225 ns 400 ns 500 ns
The range of the Wireless signal is related to the Transmit Rate of the
Wireless communication. Communications at lower Transmit range may
travel longer distances.
The range values listed in the table above are typical distances as
measured at the TOSHIBA Wireless LAN laboratories. These values
provide rule-of-thumb guides. They may vary according to the actual radio
conditions at the location where the Wireless LAN product is installed.
■ The range of your Wireless devices can be affected when the
antennas are placed near metal surfaces and solid high-density
materials.
■ Range is also affected by obstacles in the signal path of the radio that
may either absorb or reflect the radio signal.
The above table lists the typical ranges when used indoors in office
environments such as the following:
■ In Open Office environments, where antennas can see each other,
i.e. there are no physical obstructions between them.
■ In Semi-open Office environments, where work space is divided by
shoulder-height, hollow wall elements; antennas are at desktop level.
■ In Closed Office environments, work space is separated by floor-to-
ceiling solid walls.