Wireless Radio Link; Important Information On Wlan And Bluetooth; Notes On Access Point (Wlan) - Bosch FWA 46xx + Originalbetriebsanleitung

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2.5

Wireless radio link

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PC unit users are responsible for compliance with
the applicable directives and restrictions in the
country concerned.
2.5.1 Important information on WLAN and Blue-
tooth
WLAN (Wireless Local Area Network) is the term used
to describe a wireless local radio network. With WLAN,
there is a radio link in the free 2.4 GHz ISM range (ISM:
Industrial, Scientific, Medical) or 5 GHz range. We re-
commend using the 5 GHz range where possible, as
Bluetooth connections (e.g. mobile phone, KTS modu-
le) limit the WLAN communication in the 2.4 GHz range.
This frequency range is subject to state legislation, can
however be used without a license in most countries.
Consequently a large number of applications and de-
vices employ this frequency band for transmission. This
can result in frequency interference.
Depending on ambient conditions, the WLAN link may
therefore deteriorate, e. g. in the case of Bluetooth
links, cordless telephones, radio-controlled thermome-
ters, radio-controlled garage door openers, radio-cont-
rolled light switches or radio-controlled alarm systems.
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Extreme caution is to be taken if wearing pacema-
kers or other vital electronic devices when using
radio systems, as proper functioning of these items
could be impaired.
Pay attention to the following to ensure the best possi-
ble connection:
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The WLAN radio signal always tries to find the most
direct path. When setting up the PC/Laptop and
access point, make sure there are as few obstacles
as possible (e. g. steel doors and concrete walls)
which could interfere with the radio signal from and
to the PC unit.
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Inside buildings, the range of the WLAN is also
greatly influenced by the construction materials
used. Common masonry, wooden and dry walls have
little dampening effect on the spread of radio waves.
Thin gypsum walls can however cause problems,
as considerable amounts of moisture may accumu-
late in the gypsum and result in the absorption of
radio signals. Metal or concrete walls (in particular
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steel-reinforced concrete) present a strong barrier
to radio waves. Cellar ceilings are often impenetra-
ble. Generally speaking, walls with a lot of installed
metal (e.g. pipes, wires) obstruct radio waves.
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Radio reception is also impeded by large metal
objects such as radiators and window frames as
well as active sources of interference such as mobile
phones, motion sensors and microwave ovens.
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The human body also impedes radio transmission.
For this reason, always make sure that there are no
people stood between the transmitter and receiver.
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We recommend having network infrastructure ins-
talled and maintained by a network specialist.
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Keep the SSID and the codes for the radio link in a
safe place. Make sure these data are readily to hand
in case faults occur.
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We recommend a thorough inspection of the pre-
mises on commissioning: Establish where in the
building the PC unit works properly and where the
operating limits are.
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If the PC unit is used inside a vehicle (Faraday cage),
radio communication may be severely impeded.
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The radio link is affected by weather conditions.
The reception signal may therefore vary.
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Please contact your network specialist with any
queries.
2.5.2

Notes on access point (WLAN)

An access point is an electronic device which acts as an
interface between a radio network and a cable-connec-
ted computer network. This allows PC unit, PC, laptop
and a printer to be wirelessly connected.
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The access point is in the WLAN box.
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We recommend using WLAN standard IEEE 802.11n
(data transmission rate max. 600 Mbps) for the
access point. The "extended range" function is not
supported.
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The WLAN configuration always depends on the con-
figuration of the access point available.
Robert Bosch GmbH