Funkwerk WI2040n Manual do Utilizador Página 183

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Fig. 70: Wireless backbone
Fig. 71: Wireless bridge with connection of wireless clients
To be able to set up a wireless link to bintec bridges, an uninterrupted view must exist
between the antennas at both ends. This is called a line of sight, abbreviated to LOS.
The term line of sight does not just mean a straight line of vision between the two anten-
nas, but a kind of tunnel, which must not be disturbed by obstacles. This tunnel is called
the 1st Fresnel zone. The Fresnel zone has the shape of an ellipse rotated around its lon-
Funkwerk Enterprise Communications GmbH
12 Wireless LAN
bintec WLAN and Industrial WLAN 171
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