Meru Networks AP433e, Руководство по установке, Страница: 39 / 61

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Snow and Ice — Falling snow, like rain, has no significant effect on the
radio signal. However, a build up 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.
6.9 Ethernet Cabling
When a suitable antenna location has been determined, plan a cable route from
the OAP433e outdoors to the PoE-enabled controller indoors. Consider these
points:
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The Ethernet cable length should never be longer than 100 ft.
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Determine a building entry point for the cable.
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Determine if conduits, bracing, or other structures are required for safety
or protection of the cable.
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For lightning protection at the controller end of the cable, consider using
a lightning arrestor immediately before the cable enters the building.
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The shield of the ethernet cable needs to be grounded at the lightning
arrestor. If, by design, the lightning arrestor cannot provide this ground,
the shield of the ethernet cable will need to be grounded by the installer.
6.10 Grounding
It is important that the OAP433e, cables, and any supporting structures are
properly grounded. The OAP433e unit includes a grounding screw to attach a
ground wire. (See Figure 29, OAP433e grounding holes) for grounding screw
locations.) Be sure that grounding is available and that it meets local and national
electrical codes.
Figure 29, OAP433e grounding holes
6.11 Test Basic Link Operation
Prior to deploying the AP, it is recommended that users connect it to an existing
Meru deployment in order to ensure basic functionality. This can be done indoors
in a controlled setting, prior to going through the trouble of mounting it externally.
To do so, simply connect the AP to an existing controller and verify that the
controller recognizes it. If so, proceed with the following section in order to deploy
the AP.