D-Link DWL-G520M, Руководство пользователя

Страница: 7 / 45

7
DWL-G520M User’s Manual
D-Link Systems, Inc.
Standards-Based Technology
The DWL-G520M Wireless PCI Adapter utilizes the 802.11g standard.
The IEEE
802.11g
standard is an extension of the 802.11b standard. It increases
the data rate up to 54Mbps within the 2.4GHz band, utilizing OFDM technology.
This means that in most environments, within the specified range of this device, you
will be able to transfer large files quickly or even watch a movie in MPEG format
over your network without noticeable delays. This technology works by transmitting
high-speed digital data over a radio wave utilizing
OFDM ( O rthogonal F requency
D
ivision
M
ultiplexing) technology.
OFDM
works by splitting the radio signal into
multiple smaller sub-signals that are then transmitted simultaneously at different
frequencies to the receiver.
OFDM
reduces the amount of
crosstalk
(interference)
in signal transmissions. The D-Link DWL-G520M will automatically sense the best
possible connection speed to ensure the greatest speed and range possible.
802.11g offers the most advanced network security features available today, including:
WPA, 802.1x, TKIP, AES and Pre-Shared Key (PSK) mode.
The DWL-G520M is backwards compatible with 802.11b devices. This means that if
you have an existing 802.11b network, the devices in that network will be compatible
with 802.11g devices at speeds up to 11Mbps in the 2.4GHz range. Also based on the
IEEE
802.11b
standard, the DWL-G520M is interoperable with existing compatible
2.4GHz wireless technology with data transfer speeds of up to 11Mbps.
Wireless Basics