Hewlett Packard Enterprise Company MST200DFS Manual Do Utilizador

| Installation Guide

The avoidance of radio interference is an important part of wireless link planning. Interference is caused by 
other radio transmissions using the same or an adjacent channel frequency. You should first scan your 
proposed site using a spectrum analyzer to determine if there are any strong radio signals using the 802.11a/
b/g channel frequencies. Always use a channel frequency that is furthest away from another signal.

If radio interference is still a problem with your wireless bridge or mesh link, changing the antenna 
direction may improve the situation.

When planning wireless bridge or mesh links, you must take into account any extreme weather conditions 
that are known to affect your location. Consider these factors:



Temperature: The wireless bridge or mesh link is tested for normal operation in temperatures from -30ºC 
to 55ºC. Operating in temperatures outside of this range may cause the unit to fail.



Wind Velocity: The wireless bridge or mesh link can operate in winds up to 165 miles per hour. You must 
consider the known maximum wind velocity and direction at the site and be sure that any supporting 
structure, such as a pole, mast, or tower, is built to withstand this force.



Rain: The wireless bridge or mesh link is weatherproofed against rain. However, it is recommended to 
apply weatherproof sealing tape around the Ethernet port and antenna connectors for extra protection. 
If moisture enters a connector, it may cause a degradation in performance or even a complete failure of 
the link.



Snow and Ice: Falling snow, like rain, has no significant effect on the radio signal. However, a buildup of 
snow or ice on antennas may cause the link to fail. In this case, the snow or ice has to be cleared from 
the antennas to restore operation of the link.

When a suitable location has been determined for the router, you must plan a cable route from the wireless 
bridge or mesh link outdoors to a suitable power and/or network source.

Consider these points:



The Ethernet cable length should never be longer than 90 m (295 ft).



Determine a building entry point for the cable (if applicable).



Determine if conduits, bracing, or other structures are required for safety or protection of the cable.



For lightning protection at the power injector end of the cable, consider using a lightning arrestor 
immediately before the cable enters the building

It is important that the wireless bridge or mesh link, cables, and any supporting structures are properly 
grounded. Each MST200 router includes a grounding screw for attaching a ground wire. Be sure that 
grounding is available and that it meets local and national electrical codes. Ground the access point first 
using the external ground stud on the unit before making any other connection.