Wireless Link; Important Information On Wlan And Bluetooth; Notes On Access Point (Wlan) - Bosch KTS 3a Serie Manual Original

2.4

Wireless link

!
KTS 350 (KTS 3a Series) users are responsible
for compliance with the applicable directives and
restrictions in the country concerned.
2.4.1 Important information on
WLAN and Bluetooth
WLAN (Wireless Local Area Network) is the term used
to describe a wireless local network. Both WLAN and
Bluetooth provide a radio link on the free 2.4 GHz
ISM band (ISM: Industrial, Scientific, Medical). 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
devices employ this frequency band for transmission.
This can result in frequency interference and faults.
Depending on ambient conditions, the WLAN link may
therefore deteriorate, e.g. in the case of Bluetooth links,
cordless telephones, radio-controlled thermometers,
radio-controlled garage door openers, radio-controlled
light switches or radio-controlled alarm systems.
i
Extreme caution is to be taken if wearing
pacemakers or other vital electronic devices when
using wireless systems, as proper functioning of
these items could be impaired.
i
This product conforms to the low-power exclusion
limit of 100 mW as stated in Directive 2004/40/EC
and may only be operated by trained personnel.
Pay attention to the following to ensure the best
possible connection:
R
The WLAN 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 signal from and to the
KTS 350 (KTS 3a Series).
R
Inside buildings, the range of the WLAN is also
greatly influenced by the construction materials used.
Conventional masonry, wooden walls and various
types of dry construction wall scarcely impair the
propagation of radio waves. Thin gypsum walls are
however problematic, as considerable amounts of
moisture may accumulate in the gypsum and result
in the absorption of radio signals. Metal walls and
concrete (in particular reinforced concrete) largely
block out radio waves. Cellar ceilings are often
impenetrable. Generally speaking, walls with a lot
of installed metal (e.g. pipes, cables) obstruct radio
waves.
R
Radio reception is also impeded by large metal
objects such as radiators and window frames as
well as active sources of interference such as radio
telephones, motion detectors and microwave ovens.
Robert Bosch GmbH
Symbols used | KTS 350 (KTS 3a Series) | 17
R
Human beings are also an obstacle to wireless
transmission. It must therefore always be ensured
that no-one stands between the transmitter and
receiver.
R
We advise having the network infrastructure installed and
maintained by a network specialist.
R
Keep the SSID and the codes for the wireless link in a
safe place. Make sure these data are readily to hand
in case faults occur.
R
When commissioning, we recommend that you
tour the site thoroughly: Determine where in your
building KTS 350 (KTS 3a Series) functions and
where the limits for wireless transmission are
located.
R
If the KTS 350 (KTS 3a Series) is used inside a
vehicle (Faraday cage), wireless communication may
be severely impeded.
R
The wireless link is affected by weather conditions.
The reception signal may therefore vary.
R
Please contact your network specialist for any
queries.
2.4.2

Notes on access point (WLAN)

An access point is an electronic device which acts as
an interface between a wireless network and a cable-
connected computer network. It provides a wireless
connection between the KTS 350 (KTS 3a Series), the
PC/Laptop and a printer.
i
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.
i
The WLAN configuration always depends on the
configuration of the access point available.
Heed the following:
R
The access point should be located as centrally
and high up as possible, ideally under the ceiling.
The access point is not to be installed behind any
metallic objects, such as radiators or in a metal
switch cabinet.
R
If there is only one access point antenna, this should
face downwards towards the floor. If an access point
has several antennas, these should be in a three-
dimensional arrangement.
R
The best and highest transmission rates are always
achieved if there is visual contact between the
KTS 350 (KTS 3a Series) and the access point.
R
In the event of a weak link it may be useful to
change the channel set on the access point. Where
possible avoid using channels adjacent to those
already in use.
R
It is advisable to configure wireless communication
encoding at the access point.
en
|
1 689 989 293 2018-03-24