Proxim ORiNOCO AP-4900M User Manual page 19

Installation and Initialization
AP-4000/4000M/4900M Hardware Description
External Antennas
The AP-4000/4000M/4900M also has four antenna connectors, two on each radio, for use with external antennas.
External antennas can be used with either radio on the AP-4000/4000M/4900M.
NOTE:
All AP-4900M units, and AP-4000/4000M units using external antennas, must be installed by a suitably
trained professional installation technician or by a qualified installation service.
See Hardware Installation
(Professional Installation Required)
Figure 2-3 AP-4000/4000M/4900M Antenna Connectors
Connectors 1 and 2 are for the 802.11b/g radio; connectors 3 and 4 are for the 802.11a/4.9GHz radio. When the AP is
mounted on a wall, connectors 1 and 4 correspond to the horizontally polarized internal antenna, providing a coverage
pattern parallel to the wall; connectors 2 and 3 correspond to the vertically polarized internal antenna, providing a
coverage pattern parallel to the ceiling/floor. When the AP is mounted to a ceiling, connectors and 4 correspond to the
vertically polarized internal antenna, and connectors and 3 correspond to the horizontally polarized internal antenna.
Plugging an external antenna in to the antenna connector disables the corresponding internal antenna on the wireless
interface.
The AP continues to support antenna diversity with external antennas connected. With one external antenna connected
to one of the two antenna connectors on a radio, one internal antenna and one external antenna are used for antenna
diversity. With two external antennas connected, both external antennas are used for antenna diversity, and both internal
antennas are disabled.
With external antennas connected, you may wish to manually select a particular antenna for use. To do so, disable
antenna diversity by manually selecting which antenna to use for each wireless interface through the Command Line
Interface. See Configure Antenna Diversity
For a list of recommended antennas, see http://www.proxim.com/products/wifi/accessories.
For installation instructions, see
for AP cabling and mounting instructions, and
for external antenna installation instructions.
for information.
Install External Antennas (Professional Installation
AP-4000/4000M/4900M User Guide
Install External Antennas
Required).
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