4IPNET OWL800, Руководство пользователя

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User’s Manual
OWL800 / OWL2000 / HSG800
ENGLISH
© 2008 4IPNET, INC.
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4.6.3 Antennas
Antenna Diversity is an important feature of the 802.11 specification. The two radio modules (CM9) inside the
system support the feature of Antenna Diversity. Each of them comes with two antenna connectors for connecting
up to two antennas. When the feature of antenna diversity is turned on, the module uses two receiving antennas to
eliminate mulitpath signal distortion. That is, the signal from the antenna with the least noise (best SNR) is chosen,
and the other antenna is ignored. For more explanation please refer to the wiki page on Antenna Diversity .
To support the Antenna Diversity, each radio module (CM9) inside has two antenna connectors - one “Main”
connector and the other as “Auxiliary” connector. The “Main” connector must be connected with an antenna. The
“Auxiliary” is optionally connected to an antenna.
The above picture represents ANT 1 ~ ANT 4 connectors from right to left when OWL800 chassis (with Mylar) is
faced up.
ANT1: The “Main” connector of 1
st
radio module. Antenna at this connector is required.
ANT2: The “Main” connector of 2
nd
radio module. Antenna at this connector is required.
ANT3: The “Auxiliary” connector of 1
st
radio module. Antenna at this connector is optional.
ANT4: The “Auxiliary” connector of 2
nd
radio module. Antenna at this connector is optional.
Each of the two radio module (CM9) inside has two antenna connectors for antenna diversity. The required
antenna is antenna ANT1 and antenna ANT3. ANT1 is connected to the “Main” contact point of the first radio
module. ANT3 is connected to the “Main” contact of the second module.