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Alcatel-Lucent Enterprise
To achieve optimum performance, the installed radio frequency accessories (antennas and cables) should be those
recommended by ALU.
3.6.5.1 Positioning the antenna
The antenna orientation and its location with respect to other wireless devices and radiation devices (such as com-
munication devices, personal computers, etc.) can influence significantly the device performance.
The antennas transmit and receive radio signals. Performance is also affected by environmental factors (such as the
distance between the device and the base station), physical obstacles and other interferences due to radio-
frequencies (RF).
To achieve the best coverage, follow these steps:
• Whenever possible, place the antenna where there are no physical obstacles. Obstacles between the antenna and
the base station degrade the wireless signal. Place the antenna above ground level and steer it towards the
nearest base station.
• Density of materials also affects the antennas. Place them away from any type of wall, metal screens, mirrors, etc.
• Do not place the antenna near columns that can produce shadow areas and reduce the coverage zone.
• Keep the antenna away from metal pipes such as canals air-conditioning.
• Please bear in mind that other wireless devices such as telephones, microwaves, etc., can temporarily interfere
with the quality of the wireless signal.
• We do not recommend that you install the antennas near or between racks containing communication devices,
computers, etc. Use an extension cable and place the antenna outside.
The following recommendations are applicable to all wireless devices:
• Do not touch or move the antenna while the device is transmitting or receiving.
• When the antenna is transmitting, do not touch any equipment that contains devices that radiate very close to, or
touching, any exposed part of the body (particularly the face and eyes).
• Do not install the device in areas where the atmosphere is potentially explosive.
• Wireless devices can cause interference in other devices. Do not use the device in areas where medical equip-
ment is installed.
• In order to ensure that you are complying with the R&TTE 1999/5/EC norm, the device must be at least 15 cm
away from any person when operating.
3.6.6 Connecting the Wireless LAN Antenna
The OA58XX router has two connectors for the Wireless LAN antennas. These two antennas are used by the Wire-
less LAN module.
To assemble and dismantle the antennas, simply screw them into the connectors labeled WLAN (located at the rear
of the device).
For the Wireless LAN interfaces to work, the device must have a plug-in WLAN card. Depending on the model, the
antennas are installed as a factory setting. If your device does not have the module, you can add it later on. The
manual provided will indicate how to install the module and its antenna cables.
Wireless LAN Antenna Connectors
Fig. 38:
OA58XX Router
3 Components and Power Supply
25
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