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
PTP 250 User Guide Testing link end hardware
phn-2182_002v000
May 2011
8-5
AC LED is off
If the AC LED is not on solid or flashing, proceed as follows:
1
Remove the power lead from the PoE power supply.
2
Test that the mains power supply is working.
3
If the mains power supply is not working, investigate the cause.
4
If the mains power supply is working, report a suspected PoE power
supply fault to Motorola.
AC LED is flashing
If the green AC LED is flashing, proceed as follows:
1
Test that the voltage from the AC outlet that is within the correct range
(100 – 240 V AC). If it is out of this range, investigate and correct the AC
supply. Otherwise, proceed to step 2.
2
Remove and examine the cable that connects the PoE power supply to
the LPU or ODU.
3
Check that the resistances are correct as specified in Test resistance at
the P
oE end of the drop cable on page 8-10.
4
If either check fails, replace or repair the cable that connects the PoE
power supply to the LPU or ODU.