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 the radio link
phn-2182_002v000
May 2011
8-13
Some activity
If there is some activity but the link is unreliable or does not achieve the data rates
required, proceed as follows:
1
Use the Channel Status web page to check if a quieter channel is available
and is enabled. Refer to Checking channel status on
page 7-19.
2
Use the Diagnostics Plotter to check that reported Link Loss is low
enough to allow the communication rates required. Refer to Using the
diag
nostics plotter on page 7-21.
3
Check that the ODU has not become misaligned.
4
Use the Retry Histogram to check the number of retries. An excessive
number of retries (>10%) could indicate a problem. Refer to Checking the
retry histog
ram on page 7-20.
5
Use the Diagnostics Plotter to check reported Receive Power at either end
of the link. Ensure that this matches the predicted value from
LINKPlanner. Refer to Using the diagnostics plotter on page 7-21.