User Guide
Table Of Contents
- Cambium
- PMP 450 Planning Guide
- Accuracy
- Copyrights
- This document, Cambium products, and 3rd Party Software products described in this document may include or describe copyrighted Cambium and other 3rd Party supplied computer programs stored in semiconductor memories or other media. Laws in the United ...
- 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
To use the Frame Calculator to ensure that all APs are configured to transmit and receive at the same time,
follow the procedure below:
Procedure 4 Using the Frame Calculator
1
Populate the OFDM Frame Calculator parameters with appropriate values as
described above.
2
Click the Calculate button.
3
Scroll down the tab to the Calculated Frame Results section
4
Record the value of the AP Receive Start field
5
Enter a parameter set from another AP in the system – for example, an AP in the
same cluster that has a higher Max Range value configured.
6
Click the Calculate button.
7
Scroll down the tab to the Calculated Frame Results section
8
If the recorded values of the AP Receive Start fields are within 150 bit times of each
other, skip to step 10.
9
If the recorded values of the AP Receive Start fields are not within 150 bit times of
each other, modify the Downlink Data parameter until the calculated results for AP
Receive Start are within 300 bit time of each other, if possible, 150 bit time.
10
Access the Radio tab in the Configuration web page of each AP in the cluster and
change its Downlink Data parameter (percentage) to the last value that was used in
the Frame Calculator.
Selecting Sites for Network Elements
The APs must be positioned
• with hardware that the wind and ambient vibrations cannot flex or move.
• where a tower or rooftop is available or can be erected.
• where a grounding system is available.
• with lightning arrestors to transport lightning strikes away from equipment.
• at a proper height:
o higher than the tallest points of objects immediately around them (such as trees, buildings, and tower
legs).
o at least 2 feet (0.6 meters) below the tallest point on the tower, pole, or roof (for lightning protection).
• away from high-RF energy sites (such as AM or FM stations, high-powered antennas, and live AM radio
towers).
• in line-of-sight paths
o to the SMs.
o that will not be obstructed by trees as they grow or structures that are later built.
pmp-0047 (March 2014)
1-103