10
DI-724U User’s Manual
D-Link Systems, Inc.
Wireless Basics
Installation Considerations
The D-Link DI-724U Wireless 108G Qos Router 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 pass1 Keep the number of walls and ceilings between the DI-724U
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.
1 Keep the number of walls and ceilings between the DI-724U 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.
2 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 just over 2 feet (.6 meters) 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.
3 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.
4 Keep your product away (at least 3-6 feet or 1-2 meters) from electrical
devices or appliances that generate extreme RF noise.
Standards-Based Technology
The DI-724U Wireless 108G QoS Router 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 DI-724U 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 of up to 11Mbps in the 2.4GHz range.
* Maximum wireless signal rate derived from IEEE Standard 802.11g specifications. Actual data
throughput will vary. Network conditions and environmental factors, including volume of network
traffic, building materials and construction, and network overhead lower actual data throughput rate.
