Poznámky redaktora
from the wireless presentation case) for relia-
ble wireless connection before using wireless components.2m
Conditions: The mounting height the transmitter 2m
– Moist ground
.5m
34m 1.
In addition, when selecting the installation sites, observe the fol-
lowing items particular:
-
We recommend checking the planned system the building with the
respective devices (e.degree
of drying out spackle and plaster, and the existing doors and armour
or hangings the windows into account. minimum distance should heeded here to
prevent saturation. Measurement the range between the transmitter (A) and the recipient (B)
and recommended distance from interfering factors (C). Attenuation reduces the strength the wireless signal between the
transmitter (A) and the receiver (B)
Evaluating wireless paths buildings very difficult due multitude
of influences. Here, you
should also take the state construction the building, g. g.4m
13m 0.6m
18m 0. This reception interference often
occurs due shadowing, obliteration, reflections the wireless
signal sometimes occur with car radios and mobile telephones,
for example. Therefore, the open field range (Fig.
Requirements for the measurement field ranges:
-
Level area
-
Horizontal distance interfering objects from each point the line
connecting the transmitter and receiver 20m
-
Height the measured objects above the ground 2m
-
Alignment the measured objects for optimum contact
-
Moist ground
ca.
-
Wireless components other function groups, wireless head-
phones telephones, must kept least away.666 Gira electrical installation systems
eNet Planning information
I
Technical
information
Planning information eNet
Optimum wireless connections and optimum use the ranges of
wireless components are achieved observing the following basic
rules:
-
The antennae the transmitters and receivers should, the greatest
extent possible, all aligned vertically horizontally.
-
To correct irregular reception, often sufficient move the transmit-
ter receiver few centimetres. g.8m
23m 0.
Dry material Penetration
Wood, plaster, sheetrock approx. 1), the wireless range depends considerably the
type construction materials penetrated and the effective wall
thickness.
-
The length antennae may not changed, they are perfectly
matched the wavelength the frequency. emergency-stop, emer-
gency call etc. always stated,
which refers undisturbed propagation radio waves and optimally
aligned antennae.
-
Transmitters and receivers are not installed behind metal con-
ductive surfaces, such anti-static floors, sounding with metal clad-
ding, cable lines, metal louvered ceilings and hot-water and electrical
floor heating.
Note
-
Only two repeaters may used wireless zone. The wireless transmission
is thus not suitable for security purposes, e. 100 m
> m
> m
> m
> m
> m
(A) (B)
(C) (C)
Fig. walls and ceilings are penetrated along the trans-
mission path (Fig. 90%
Brick, pressboard approx.
Dependence the transmission ranges the mounting height:
Theoretical transmission ranges Mounting height the receiver
100m 2m
56m 1.
- repeater should installed close possible the midpoint
between transmitters and receivers and also not near other transmit-
ters receivers.0m
28m 0. 10%
Important:
Moisture the material reduces penetration
A B
Fig.
Wireless transmission occurs non-exclusive transmission path. The table shows the capability wireless signals penetrate
different materials.
-
Electronic devices, such motors, electronic control gear and Tronic
transformers, must kept distance least 50cm. We
recommend not installing them lower than 0. Withthe eNet system this usually100 m. 30%
Metal, metal grids, aluminium cladding approx.
-
Large metal surfaces, such metal doors and frames, aluminium
blinds metal cabinets should kept great distance possi-
ble (several decimetres).
-
Transmitters and receivers should not installed near the ground.5m from the ground. 70%
Reinforced concrete approx. For
this reason, interference cannot ruled out
