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- Before Using the Optional Wireless LAN
Wireless Network Considerations
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The 802.11abgn WLAN devices support IEEE802.11a, IEEE802.11b, IEEE802.11g, and IEEE802.11n.
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The devices operate in the 2.4GHz ISM band and the 5 GHz lower and middle UNII bands.
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The maximum range of the WLAN device indoors is typically 80 feet (25 meters). Please note that the
maximum range you achieve may be shorter or longer than 80 feet, depending on factors such as access point
transmit power, number and density of obstructions, or external RF interference.
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Microwave ovens will interfere with the operation of WLAN device as microwave ovens operate in the same
2.4GHz frequency range that IEEE802.11b/g devices operate in. Interference by microwaves does not occur with
IEEE802.11a radio which operates in the 5 GHz RF band.
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Wireless devices that transmit in the 2.4 GHz frequency range may interfere with the operation of WLAN devices
in IEEE802.11b/g modes. Interference symptoms include reduced throughput, intermittent disconnects, and
large amounts of frame errors. It is HIGHLY recommended that interfering devices be powered off to ensure
proper operation of the WLAN
Deactivating the WLAN Device
Deactivation of the WLAN device may be desired in certain circumstances (to extend battery life) or where certain
environments require it (i.e. hospitals, clinics, airplanes, etc.). Fujitsu mobile computers employ three methods with
which to deactivate the WLAN device:
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Using the Wireless On/Off Switch, or,
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Using the WLAN icon in the taskbar
Deactivation using the Wireless On/Off Switch
The WLAN device can be deactivated quickly and efficiently by toggling the Wireless On/Off Switch to the Off position.
The Wireless Device On/Off switch has no effect on systems without wireless devices.
