Table of Contents
Advertisement
Wireless connection
Range reduction:
■
On their way between transmitter and receiver, wire-
less signals are damped (e.g. by air or when pene-
trating walls).
■
Wireless signals are reflected by metallic objects
(e.g. reinforcements embedded in walls, metal foil of
thermal insulation, thermal glazing with metallised
thermal vapour deposit).
Building materials that influence the range
Wood, gypsum, uncoated non-ferrous glass
Brick, hardboard or chipboard
Concrete with steel reinforcements, thermal glazing
Metal, aluminium backing
Note
If required, install a wireless repeater to increase the
range.
Angle of penetration
The reception quality remains best if radio signals hit
the walls vertically. Avoid wall recesses.
Depending on the angle of penetration, the effective
wall thickness changes and therefore the extent to
which the electromagnetic waves are damped.
Flat (unfavourable) angle of penetration (without wireless repeater)
D
A
Fig. 2
Wireless base station
A
B
Wireless component, e.g. Vitotrol 200 RF
Cellar ceiling
D
(cont.)
Wireless signals are isolated by service ducts.
■
■
Wireless signals suffer interference from appliances
that also operate with high frequency signals
(such as computers, audio and video systems,
WLAN, electrical transformers, electrical ballast).
Distance from such appliances: At least 2 m.
Remaining reception quality in %
A very flat angle of penetration can be avoided by
using a wireless repeater.
B
Preparing for installation
90 to 100
65 to 95
10 to 90
0 to 10
9
Advertisement
Table of Contents
