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The length antennae may not changed, they are perfectly
matched the wavelength the frequency. Here, you
should also take the state construction the building, g.
Note
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Only two repeaters may used wireless zone.
Requirements for the measurement field ranges:
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Level area
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Horizontal distance interfering objects from each point the line
connecting the transmitter and receiver 20m
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Height the measured objects above the ground 2m
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Alignment the measured objects for optimum contact
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Moist ground
ca.4m
13m 0.
Wireless transmission occurs non-exclusive transmission path.from the wireless presentation case) for relia-
ble wireless connection before using wireless components.
- repeater should installed close possible the midpoint
between transmitters and receivers and also not near other transmit-
ters receivers. 100 m
> m
> m
> m
> m
> m
(A) (B)
(C) (C)
Fig.8m
23m 0. 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. We
recommend not installing them lower than 0.
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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. This reception interference often
occurs due shadowing, obliteration, reflections the wireless
signal sometimes occur with car radios and mobile telephones,
for example. minimum distance should heeded here to
prevent saturation. Therefore, the open field range (Fig.
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Large metal surfaces, such metal doors and frames, aluminium
blinds metal cabinets should kept great distance possi-
ble (several decimetres). For
this reason, interference cannot ruled out.6m
18m 0. g.2m
Conditions: The mounting height the transmitter 2m
– Moist ground
. Measurement the range between the transmitter (A) and the recipient (B)
and recommended distance from interfering factors (C). 1), the wireless range depends considerably the
type construction materials penetrated and the effective wall
thickness.
Dry material Penetration
Wood, plaster, sheetrock approx. The wireless transmission
is thus not suitable for security purposes, e. 90%
Brick, pressboard approx. 30%
Metal, metal grids, aluminium cladding approx.
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To correct irregular reception, often sufficient move the transmit-
ter receiver few centimetres. walls and ceilings are penetrated along the trans-
mission path (Fig. Withthe eNet system this usually100 m.
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Electronic devices, such motors, electronic control gear and Tronic
transformers, must kept distance least 50cm.
Dependence the transmission ranges the mounting height:
Theoretical transmission ranges Mounting height the receiver
100m 2m
56m 1.
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Wireless components other function groups, wireless head-
phones telephones, must kept least away.degree
of drying out spackle and plaster, and the existing doors and armour
or hangings the windows into account.
In addition, when selecting the installation sites, observe the fol-
lowing items particular:
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We recommend checking the planned system the building with the
respective devices (e. 10%
Important:
Moisture the material reduces penetration
A B
Fig.0m
28m 0.666 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:
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The antennae the transmitters and receivers should, the greatest
extent possible, all aligned vertically horizontally.
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Transmitters and receivers should not installed near the ground.5m
34m 1. emergency-stop, emer-
gency call etc. The table shows the capability wireless signals penetrate
different materials. g.5m from the ground. always stated,
which refers undisturbed propagation radio waves and optimally
aligned antennae. 70%
Reinforced concrete approx
