1 689 989 458
2020-01-01
|
Robert Bosch GmbH
User instructions | VDI III | 7
en
Important information on WLAN and Bluetoo-
th
WLAN (wireless local-area network) is a term
used to describe a wireless local network.
Bluetooth and WLAN provide a radio connecti-
on on the free 2.4 GHz ISM band (ISM: indust-
rial, scientific, medical). This frequency range
is subject to government legislation but can
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 inter-
ference and malfunctions.
Depending on ambient conditions, the radio
connection may be impaired, e.g. in the case of
Bluetooth links, cordless telephones, radio-con-
trolled thermometers, radio-controlled garage
door openers, radio-controlled light switches or
radio-controlled alarm systems.
i
Bluetooth may cause drops in bandwidth in
the WLAN network. The antennas of Blue-
tooth and WLAN devices should be at least
30 centimeters apart. Use the USB extension
cable (special accessory) to maintain some
distance between the Bluetooth USB adapter
on the computer and the WLAN antenna.
i
Extreme caution is to be used around pa-
cemakers and other vital electronic devices
while wireless systems are being used, as
proper functioning of these devices may be
impaired.
Pay attention to the following to ensure the
best possible connection:
¶
The radio signal always tries to find the most
direct path. When setting up the computer
and access point, make sure there are as few
obstacles as possible, e.g. steel doors and
concrete walls, that might interfere with the
signal from and to VDI III.
¶
Inside buildings, the range of WLAN /
Bluetooth is also greatly affected by the
construction materials used. Conventional
masonry, wooden walls and various types
of dry wall scarcely impair the propagati-
on of radio waves. Thin gypsum walls are
problematic, however, as considerable
amounts of moisture may accumulate in the
gypsum, which may result in the absorption
of radio signals. Metal walls and concrete (in
particular reinforced concrete) largely block
out radio waves. The ceilings of basements
are often impenetrable. Generally speaking,
walls with a lot of metal components (e.g.
pipes, cables) obstruct radio waves.
¶
Radio reception is also impeded by large
metal objects such as radiators and window
frames as well as active sources of interfe-
rence such as wireless telephones, motion
detectors and microwave ovens.
¶
Human beings are also an obstacle to wire-
less transmission. Always make sure that no
people are present between the transmitter
and receiver.
¶
We recommend having the network infra-
structure installed and maintained by a
network specialist.
¶
When using a WLAN connection, keep the
SSID and the codes for the wireless connec-
tion in a safe place. Make sure the informati-
on is ready to hand in case of malfunctions.
¶
We recommend that you closely inspect the
intended location during commissioning:
determine where in your building VDI III works
well and what the limits of wireless transmis-
sion are.
¶
The wireless connection is affected by
weather conditions. The reception signal may
therefore vary.
¶
Please contact your network specialist if you
have any questions.
¶
In the event of problems with the radio
connection, the USB link can be activated
and used instead of the radio connection.