Deployment Process; Planning; Linkplanner; Site Survey - Cambium Networks cnReach N500 Guia De Inicio Rapido

Deployment Process

Successful network deployments are those that are installed predictably, perform well over time and recover
from unexpected conditions quickly. Our experience troubleshooting networks taught us to plan, install and
troubleshoot networks with the considerations listed below. Follow these steps to deploy a successful network.

Planning

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Understand customer's application and required network throughput. This is especially important when
working with narrow-band channels on licensed spectrum. Take into account the polling cycles and the
sizes of each poll especially when planning PMP networks.
•
Test radios on the bench with desired equipment before first deployment. This is especially important
when interfacing with serial or general-purpose IO equipment to confirm wiring diagrams, cables and
cnReach module settings.
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Perform a path study for each link using Cambium Networks LINKPlanner.
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Plan radio settings to achieve desired network throughput with consideration of expected signal strength,
RF noise and overlapping networks.
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Perform a Site Survey to sample in-band noise levels.
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Prepare equipment list that includes radios, radio accessories, cables, connectors, adapters, antennae,
towers/poles, brackets, etc.

LINKPlanner

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The Cambium Networks LINKPlanner software and user guide may be downloaded from the support
website:
http://www.cambiumnetworks.com/linkplanner
•
LINKPlanner imports path profiles and predicts data rates and reliability over the path. It allows the system
designer to try different antenna heights and RF power settings. It outputs an installation report that
defines the parameters to be used for configuration, alignment and operation. Use the installation report
to compare predicted and actual link performance.

Site Survey

A site survey involves using a spectrum analyzer or alternative spectrum tool to check in-band noise levels at the
site.
•
Cambium Networks considers this an important step when deploying standard networks since the in-band
noise levels can be factored into the network design.
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Other aspects of a site survey include sweeping any existing installed coaxial transmission line, jumpers,
surge suppressors and antennas for Return Loss or VSWR.
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Identifying possible causes of interference with co-located systems.

Installation

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Use compass to align antennae to magnetic azimuth as recommended by the LINKPlanner installation
report
•
Fine-tune the alignment by monitoring the results of the RF Ping diagnostic tool in the GUI to optimize the
displayed RSSi value. This value can be compared to the predicted value in LINKPlanner. Any deviations
from the LINKPlanner prediction should be justified before completing the installation.
•
Properly torque all mechanical connections.
•
Apply appropriate weatherproofing material to all exposed RF and electrical connections.
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