Proxim Tsunami MP.11 manual Outdoor Link Installation, Placing the Antenna

Tsunami MP.11 Antenna Installation

CAUTION!

•The cable must be secured along the complete distance between attachment points. No part of the antenna cable should be allowed to hang free. This is particularly important for outdoor cable parts.

•The antenna cable and cable connectors are not designed to withstand excessive force:

ºDo not use the connectors as ‘cable grips’ to pull cable through raceways or conduits.

ºDo not use the cable connector to support the weight of the cable during or after installation.

ºDo not use any tool to tighten the connectors.

•Always seal the connectors using weatherproofing tape.

•Avoid any water or moisture entering the cable as that impacts the performance of the wireless link.

•Prior to sealing the outdoor connectors and permanently securing the cable to the wall with cable ties and wall hooks, verify whether the installation and all components functions properly.

OUTDOOR LINK INSTALLATION

The outdoor installation of the link (point-to-point or point-to-multipoint) requires the following:

•An antenna or unit with an integrated antenna

•A low-loss antenna cable (available in four lengths)(not for unit with integrated antenna)

•Antenna mast or wall bracket for the antenna / unit

•A grounding system that meets the requirements described in “Grounding the Antenna” on page 19

•Waterproofing of all connections

Note: All outdoor cable connectors must be sealed with weatherproofing stretch tape to make the connectors permanently waterproof. See “Sealing the Cable Connectors” on page 18.

DANGER! For your own safety, the antenna mast and the grounding system should be installed only by experienced installation professionals who are familiar with local building and safety codes and with the National Electrical Codes (NEC). Read carefully the instructions described in “Grounding the Antenna” and verify that your installation complies with the appropriate regulations and codes before installing the antenna.

Placing the Antenna

To achieve maximum performance of your wireless outdoor link, the outdoor antenna must have clear line-of-sight to the antenna of the other unit. Although the radio signal can work well without line-of-sight in urban environments in which the signal is transported by reflection rather than being direct, the best results are achieved in line-of-sight conditions.

Line-of-sight can be defined as:

•No obstacles in the direct path between the antennas (antenna beam)

•No obstacles within a defined zone around the antenna beam

You should be aware that the shape of an antenna beam is not straight and narrow like a laser beam. The antenna beam, also known as Fresnel2 Zone, is rather bulged in the middle, such as, for example, a rugby ball.

2Pronounced as ‘Fray-Nell’

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