Teldat bintec W1002n Manual do Utilizador descarregar pdf (Página 196)

100

101

Distance from transmit an-

tenna (km)

Radius of 1st Fresnel zone

(m)

Radius at 60 % of

1st Fresnel zone (m)

4,500 7,4 5,7

4,750 5,4 4,2

Example: Radius of 1st Fresnel zone as a function of distance to the transmit antenna for a

distance of 700 m at 2.45 GHz.

Example 2

Distance from transmit an-

tenna (km)

Radius of 1st Fresnel zone

(m)

Radius at 60 % of

1st Fresnel zone (m)

100 1,6 1,25

200 2,1 1,6

300 2,3 1,75

400 2,3 1,75

500 2, 1,6

600 1,6 1,25

Note

When setting up a bridge link, make sure that no obstacles or trees protrude into the

Fresnel zone. If obstacles exist, the transmission rate will drop and the path may even-

tually fail.

It is not essential to consider the LOS for short distances inside buildings, as the radius

of the Fresnel zone will be very small here.

If you meet these requirements, the link can be set up and maintained without further

limitations. A special feature of links with Teldat bridges is that they are completely un-

affected by weather conditions.

Note

For a bridge path, always use the marked antenna connection. This is the device's

primary connection.

10 Wireless LAN Teldat GmbH

182 bintec WLAN and Industrial WLAN

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