User Guide
Table Of Contents
- Cambium
- PMP 450 Planning Guide
- Accuracy
- Copyrights
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- Restrictions
- License Agreements
- High Risk Materials
- Safety and regulatory information
- Contents
- List of Figures
- List of Tables
- About This Planning Guide
- PMP support website: http://www.cambiumnetworks.com/support
- Cambium main website: http://www.cambiumnetworks.com/
- Sales enquiries: solutions@cambiumnetworks.com
- Email support: support@cambiumnetworks.com
- Telephone numbers:
- For full list of Cambium support telephone numbers, see:
- http://www.cambiumnetworks.com/support/contact-support
- Address:
- Chapter 1: Planning considerations
- Regulatory planning
- Network migration planning
- Site planning
- Link planning
- Analyzing the RF Environment
- Selecting Sites for Network Elements
- Diagramming Network Layouts
- Grounding and lightning protection
- Configuration options for TDD synchronization
- Data network planning
- Security planning
- Isolating APs from the Internet
- Managing module access by passwords
- Filtering protocols and ports
- Port Lockdown
- Isolating SMs
- Filtering management through Ethernet
- Allowing management from only specified IP addresses
- Configuring management IP by DHCP
- Planning for airlink security
- Planning for RF Telnet Access Control
- Forwarding Downlink PPPoE PADI packets
- Planning for RADIUS integration
- Planning for SNMP security
- Ordering components
- Chapter 2: Legal information
- Cambium Networks end user license agreement
- Acceptance of this agreement
- Definitions
- Grant of license
- Conditions of use
- Title and restrictions
- Confidentiality
- Right to use Cambium’s name
- Transfer
- Updates
- Maintenance
- Disclaimer
- Limitation of liability
- U.S. government
- Term of license
- Governing law
- Assignment
- Survival of provisions
- Entire agreement
- Third party software
- Hardware warranty
- Limit of liability
- Cambium Networks end user license agreement
- Chapter 3: Reference information
PMP 450 Planning Guide
Cabling and lightning protection
This section describes the cabling and lightning protection components of a PMP 450 installation.
PMP and lightning protection
Due to the full metallic connection to the tower or support structure through the AP antenna, grounding the
AP and installing a 600SS surge suppressor at the Ethernet cable building ingress is strongly recommended.
This suppresses overvoltages and overcurrents such as those caused by near-miss lightning. APs provide a
grounding lug for grounding to the tower or support structure.
The PMP 450 Series is not designed to survive direct lightning strikes. For this reason the unit should not be
installed as the highest point in a localized area.
Outdoor connections
The term ‘drop cable’ refers to the cable that is used for all connections that terminate outside the building, for
example, connections between the AP/SM, surge suppressors (if installed), GPS receivers (if installed) and the
power supply injector.
The following practices are essential to the reliability and longevity of cabled connections:
• Use only shielded cables and connectors to resist interference and corrosion
• For vertical runs, provide cable support and strain relief
• Include a 2 ft (0.6 m) service loop on each end of the cable to allow for thermal expansion and contraction
and to facilitate terminating the cable again when needed
• Include a drip loop to shed water so that most of the water does not reach the connector at the device
• Properly crimp all connectors
• Use dielectric grease on all connectors to resist corrosion
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pmp-0047 (March 2014)