D-Link AirPro DWL-AB650 User Manual page 9

Division Multiplexing) 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. D-Link AirPro products will
automatically sense the best possible connection speed to ensure the
greatest speed and range possible with the technology.
Installation Considerations
Designed to traverse distances up to 900 feet (~300 meters), D-Link AirPro
DWL-AB650 lets you access your network from your laptop computer
virtually anywhere you want. Keep in mind, however, that the number and
thickness of walls, ceilings or other objects that the wireless signals must
pass thru may limit range. Typical ranges vary depending on the types of
materials and background RF noise in your home or business. The key to
maximizing the transmission range is to follow these basic principles:
1. Keep the number of walls and ceilings between the Access Point and
your receiving device to a minimum - Each wall or ceiling can reduce
your D-Link AirPro Wireless product' s range from 3-90 feet (1-30 meters.)
For some businesses or for a large residential home deployment, it may
be beneficial to have more than one access point with overlapping
coverage.
2. Be aware of the direct line between Access Points and computers with
wireless adapters - 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 as if it were over 42 feet (14 meters) thick! Try to make
sure that the Access Points and Adapters are positioned so that the
signal will travel in as straight a line through a wall or ceiling as possible
for better reception.
3. Building Materials make a difference - A solid metal door or aluminum
studs can have a negative effect on range. Try to position Access Points
and computers with wireless adapters so that the signal passes through
drywall or open doorways and not other materials.
4. Make sure that the antenna is positioned for best reception by using the
software signal strength tools included with your DWL-AB650 Carbus
Adapter.
DWL-AB650 Wireless Multimode Cardbus Adapter
9