User's Manual
Table Of Contents
- PTP 250 User Guide
- Copyrights
- Safety and regulatory information
- Contents
- List of Figures
- List of Tables
- About This User Guide
- Chapter 1 Product description
- Chapter 2 Planning considerations
- Chapter 3 Legal information
- Chapter 4 Reference information
- Chapter 5 Installation
- Chapter 6 Configuration and alignment
- Chapter 7 Operation
- Chapter 8 Troubleshooting
- Testing link end hardware
- Testing when PoE LEDs do not illuminate correctly
- Testing after a lightning strike
- Test flowcharts
- AC LED is off
- AC LED is flashing
- PORT LED is off
- PORT LED is flashing
- Test Ethernet packet errors reported by ODU
- Test Ethernet packet errors reported by managed switch or router
- Test ping packet loss
- Test resistance at the PoE end of the drop cable
- Testing the radio link
- Testing link end hardware
- Glossary
Grounding and lightning protection Chapter 2 Planning considerations
phn-2182_002v000
2-12
May 2011
Figure 2-1 Rolling sphere method to determine the lightning protection zones
Assess locations on masts, towers and buildings to determine if the location is in Zone
A or Zone B:
• Zone A: In this zone a direct lightning strike is possible. Do not mount equipment
in this zone.
• Zone B: In this zone, direct EMD (lightning) effects are still possible, but
mounting in this zone significantly reduces the possibility of a direct strike.
Mount equipment in this zone.
WARNING
Never mount equipment in Zone A. Mounting in Zone A may put
equipment, structures and life at risk.
General protection requirements
Apply the practices and procedures detailed in manual
R56 Standards And Guidelines
For Communication Sites
(available for download at www.motorola.com/ptp/software)
to all new site build activities.