Ubiquiti-networks airFibe5 User Manual download pdf

DESIGN GUIDE: airFiber AF5/AF5U

Best Practices for Installation of the airFiber AF5/AF5U

Ideal Mounting Location: High in Elevation with

ClearLine of Sight

Custom Frequency and Transmit Power

Conguration to Fit Your Application

Throughout Optimization with Maximum

Frequency Reuse and Link Symmetry

Selection of Installation Site

The airFiber® AF5/AF5U, referred to as the AF5 in this Design

Guide, features unique functionality that requires you to be

cognizant of the installation environment.

For best performance, you must install the AF5 as high up

as possible, with a line of sight free from obstructions. This is

especially true in FDD (Frequency Division Duplexing) mode,

as there is a requirement to maximize channel/spectrum reuse.

Any objects in front of or near the front of the AF5 can have a

signicant impact on overall performance. The AF5 should be

installed 1 m (3.3 ft) below the highest point of the structure

to reduce the risk of a lightning strike. When the AF5 must be

installed above a metallic surface like a corrugated at roof or

water tower, then you should ensure that the AF5 is located

more than 3 m (10 feet) above the metal/reective surface.

3 m (10 ft)

Good Location

1 m (3.3 ft)

Close-up of Installation on Top of Water Tower

What is generally true for cellular installations is true for the

AF5. You should mount the AF5 where it can see no reections

in the near eld, so we recommend the following types of

mountingsites:

§ Perimeter mounting on a water tower/structure (best)

§ Mounting near the edge of the top of a structure

§ Mounting on an elevated mast or tower

Radios that are mounted anywhere near the surface of a

roof or the top of a water tower can be signicantly aected

by reections. FDD is more susceptible to the elements

of a deployment environment than TDD (Time Division

Duplexing)is.

Best Location

Bad Location:

Reection o Rooftop

and Lip of Building

Close-up of Installation on Rooftop of Building

Good and bad examples of deployments are depicted in this

section, “Typical Deployment Scenarios” on page 2.

1 2 3 4

Summary of Contents

Page 1

DESIGN GUIDE: airFiber AF5/AF5UBest Practices for Installation of the airFiber AF5/AF5UIdeal Mounting Location: High in Elevation with ClearLine of S

Page 2 - Typical Deployment Scenarios

Typical Deployment ScenariosGood LocationReective SurfaceGood LocationBad LocationBest Location: No Reective SurfaceBad LocationMinimal Reective

Page 3 - Frequency Conguration

Frequency CongurationFDD will be most useful in situations that have plenty of spectrum available and will show the greatest benet on shorter-range

Page 4 - Online Resources

Ubiquiti-networks airFibe5 User Manual

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Ubiquiti-networks airFibe5 User Manual

Browse online or download User Manual for Accessories for electrical Ubiquiti-networks airFibe5. Ubiquiti Networks airFibe5 User Manual

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