Wireless Basics
9
D-Link Systems, Inc.
Standards-based Technology
The
DGL-3420 Wireless Gaming Adapter utilizes the
802.11a, 802.11b
and
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. The
802.11a
standard also increases the data rate up to
54Mbps,* but within the 5GHz band. Both 802.11a and 802.11g utilize
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.
In addition to its compatibility with 802.11g and 802.11a devices, the DGL-3420 is compatible with
802.11b devices. This means that if you have an existing 802.11b network, or a network with a
mixture of 802.11g, 802.11a and 802.11b, the devices in that network will be compatible with the
DGL-3420.
Installation Considerations
The D-Link DGL-3420 lets you access your network, using a wireless connection, from virtually
anywhere within its operating range. Keep in mind, however, that the number, thickness and location
of walls, ceilings, or other objects that the wireless signals must pass through, may limit the range.
Typical ranges vary depending on the types of materials and background RF (radio frequency) noise in
your home or business. The key to maximizing wireless range is to follow these basic guidelines:
Keep the number of walls and ceilings between the DGL-3420 and other network devices
to a
minimum - each wall or ceiling can reduce your D-Link wireless product’s range from 3-90 feet
(1-30 meters). Position your devices so that the number of walls or ceilings is minimized.
Be aware of the direct line between network devices. A wall that is 1.5 feet thick (.5 meters), at
a 45-degree angle appears to be almost 3 feet (1 meter) thick. At a 2-degree angle it looks over
42 feet (14 meters) thick! Position devices so that the signal will travel straight through a wall or
ceiling (instead of at an angle) for better reception.
Building Materials can impede the wireless signal - a solid metal door or aluminum studs may
have a negative effect on range. Try to position wireless devices and computers with wireless
adapters so that the signal passes through drywall or open doorways and not other materials.
Keep your product away (at least 3-6 feet or 1-2 meters) from electrical devices or appliances
that generate extreme RF noise.
*Maximum wireless signal rate based on IEEE Standard 802.11a and 802.11g specifications. Actual data throughput rate will
vary. Network conditions and environmental factors, including volume of network traffic, building materials and construction,
and network overhead lower actual data throughput rate.
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