Clear Line Of Sight; O S); Figure 9-2 Obstruction Of The; Figure 9-3 Trees Within Thef - DragonWave Horizon COMPACT Plus Product Manual

DragonWave Inc.
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9.2 Clear Line of Sight (LoS)
The DragonWave Horizon Compact Plus requires a clear LoS between the units at each end of the link.
You must be able to see an unobstructed view of the antennas from each end. Avoid obstacles that are
close to the LoS mid-way between antennas, but not blocking it, as this can have a negative impact on
signal quality (Fresnel zone clearance).
The Fresnel zone is an area of the antenna radiation pattern that lies mid way between the two system
antennas. The size of this area is dependant upon the frequency being used and the distance between
antennas. You should avoid having any obstructions within the Fresnel zone. Note that you may be able
to see the far end antenna without obstruction, but still have obstacles in the Fresnel Zone. Signal quality
will deteriorate if obstacles encroach too deeply into the Fresnel zone. Encroaching up to the 60% mark is
acceptable.
Also, ensure that antennas are mounted with adequate clearance from roof tops, roof edges, walls and
other obstacles (e.g. air conditioning plant) to avoid problematic near field effects.
Figure 9-2 Obstruction of the Fresnel Zone
Figure 9-3 Trees within the Fresnel Zone Obstruct the Signal
Wireless Ethernet Product User Manual – Volume 1
Horizon Compact Plus Release 1.0.1