Black Box LW0050A Manual page 95

Point-to-Point
A point-to-point link is based on the use of one Access Point with external antennas
(LW0055A) and one adapter (LW0056A–LW0059A). The Access Point and the
Workstation Bridge must be equipped with one or two directional antennas. The
necessary antenna gain depends on the required range and performance.
Point-to-Multipoint
Setting up a point-to-multipoint link requires the use of an LW0055A Access Point
equipped with omnidirectional antennas and a remote LW0058A Workgroup
Bridge (or LW0056A, LW0057A, or LW0059A) equipped with high-gain
directional antennas.
Antenna Alignment
Low-gain antennas do not require alignment, since they have a very wide radiation
pattern. High-gain antennas have a narrow beamwidth, so you need to align them
in order to optimize the link.
Check antenna alignment by using the LED indicators on the front panel of
whichever adapter is used in the link (LW0056A, LW0057A, or LW0058A), or use
the site survey program with the LW0059A. The LED indicators, if you decide to
use them, show you the reception quality.
To perform antenna alignment:
1. Assemble antennas according to the assembly instructions included with the
antenna set.
2. Mount the antennas as high as possible.
3. Connect the coaxial cable to the Access Point at the main site.
4. Connect the coaxial cable to the Workstation Bridge (or Station Adapter) at
the remote site.
5. Power on the Access Point and the Workstation Bridge (or Station Adapter).
6. Synchronize the units by aligning the antennas manually until the WLNK
indicator LED on the front panel of the wireless Bridge or Station Adapter
lights.
7. Align antennas at the main and remote sites until maximum signal quality is
obtained. (Check QLT LEDs on the front panel of the Station Adapter and the
wireless Bridge.)
CHAPTER 5: Planning and Installing Wireless LANs
93