Cambium Networks cnReach N500, User Manual

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cnReach N500 User Guide
InstallationSafety
phn-4673_002v000 (March 2018)
5-7
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
• 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.
• Perform a path study for each link using Cambium Networks LINKPlanner.
• Plan radio settings to achieve desired network throughput with consideration of expected signal
strength, RF noise and overlapping networks.
• Perform a Site Survey to sample in-band noise levels.
• Prepare equipment list that includes radios, radio accessories, cables, connectors, adapters,
antennae, towers/poles, brackets, etc.
LINKPlanner
• 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.
• Other aspects of a site survey include sweeping any existing installed coaxial transmission line,
jumpers, surge suppressors and antennas for Return Loss or VSWR.
•
Identifying possible causes of interference with co-located systems.
Installation
•
Use compass to align antennae to magnetic azimuth as recommended by the LINKPlanner
installation report