SMC Networks SMC2602W - Manual (Page 25)

Network Connection Problems
There may be a network connection problem if the LED on the card does not light, or if you
cannot access any network resources from the computer. Check the following items before
contacting SMC Technical Support.
• Make sure the correct network card driver is installed for your operating system. If
necessary, try uninstalling and reinstalling the driver. To do this, first go into the Device
Manager, select Network Adapters, and remove the SMC adapter. Then open up your
Start Menu, go to Programs, click the "SMC2602W 11Mbps WLAN Utility" program folder
and choose "Uninstall". Reboot the machine when the uninstall is complete. Once you
have booted up again, the OS may ask for the SMC Driver CD again. Insert your Driver
CD and browse to the driver path again. Then install the utility program again.
• Make sure the computer and other network devices are receiving power. If you suspect a
power outlet to be faulty, plug another device into it to verify that it is working.
• If your wireless station cannot communicate with a computer on the Ethernet LAN when
configured for Infrastructure mode, try changing the wireless channel on the AP. Make
sure the SSID is the same as that used by the AP for a station with roaming disabled, or
the same as that used by the AP's in the extended service set (ESS).
• The Access Point you are trying to attach to is defective or may not be configured
properly to accept your signal. Check with the administrator of your wireless network for
more information on connecting to the LAN. Also run the necessary diagnostics on the AP
to make sure the unit is fully operational.
• If you cannot access the Internet, be sure to check with the ISP for further instructions
once the drivers for the Wireless Card are installed properly.
10 | Frequently Asked Questions
• What is a Wireless LAN?
o A local area network that transmits over the air typically in an unlicensed
frequency such as the 2.4GHz band. A wireless LAN does not require lining up
devices for line of sight transmission like IrDA. Wireless access points (base
stations) are connected to an Ethernet hub or server and transmit a radio
frequency over an area of several hundred to a thousand feet which can
penetrate walls and other non-metal barriers. Roaming users can be handed off
from one access point to another like a cellular phone system. Laptops use
wireless network cards that plug into an existing PCMCIA slot or that are self
contained on PC cards, while stand-alone desktops and servers use plug-in cards
(ISA, PCI, etc.).
• What is Ad-hoc?
o An AD-HOC network is a peer to peer network where all the nodes are wireless
clients. As an example, two PC’s with wireless adapters can communicate with
each other as long as they are within range. A wireless extension point can
extend the range of an AD-HOC network.
• What is the 802.11 standard?
o A family of IEEE standards for wireless LANs first introduced in 1997. 802.11
provides 1 or 2 Mbps transmission in the 2.4GHz band using either a frequency
hopping modulation (FHSS) technique or direct sequence spread spectrum
(DSSS), which is also known as CDMA. The 802.11b standard defines an 11
Mbps data rate in the 2.4GHz band, and the 802.11a standard defines 54 Mbps
in the 5GHz band.