NDC comm NWH4020 User Manual page 32

The wireless network is
often interrupted (the
taskbar icon shows red, or
the link quality indicator
shows black).
The AP cannot be detected
by the Site Survey tool.
You can join a network
using the Site Survey tool
but not if you type the
settings manually in the
Adapter Properties
window.
You encounter a "Divide
Error" when you try to run
the InstantWave Utility.
Your IBM ThinkPad X20
seems to "freeze" after you
install the InstantWave
Utility and restart the
system.
The system restarts if you
try to shut it down while
the InstantWave Utility is
running.
26
1. Move the computer closer to the access point (AP)
to find a better signal. If the signal is still weak, try
changing the adapter's height or orientation.
2. There may be interference, possibly caused by a
microwave oven, 2.4-GHz wireless phone, or
metal objects. Move these interference sources or
change the location of the computer or AP.
3. Change the wireless channel on the AP. See the
user's guide for the AP.
4. Make sure the AP's antenna, connectors, and
cabling are firmly connected.
The distance between the AP and the computer may
be too great.
The Secure SSID option might be enabled on the AP.
See the user's guide for the AP.
Make sure the Domain Name (SSID) setting is
correct. Note that the setting is case-sensitive and
cannot contain any spaces.
This can happen if the system was not restarted after
the utility was installed. Restart the system and the
utility will run correctly.
The IBM ThinkPad X20 and some other notebooks
need extra time to get/set the TCP/IP parameters for a
wireless (or wired) network adapter. Allow the
system three to five minutes to start up. The adapter
will then operate normally.
This is a known problem with certain older versions
®
of Microsoft Windows. Close the utility before
shutting the system down.
InstantWave
11-Mbps USB Wireless LAN Adapter