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
Wireless specifications Chapter 4 Reference information
phn-2182_002v000
4-20
May 2011
Table 4-15 5.8 GHz RF specifications
Radio technology Specification
RF band 5.725-5.850 GHz
Channel selection By dynamic frequency control and manual intervention
Automatic detection on start-up and continual adaptation.
Dynamic frequency control Initial capture 10-15 sec. Out of service on interference
100 ms.
Channel width 20 MHz and 40 MHz
Manual power control Maximum power can be controlled lower than the power
limits in order to control interference to other users.
Receiver noise figure Typically 6 dB
Antenna type (integrated) Flat plate antenna; gain 23 dBi
Antenna type (external) See Antenna specifications on page 4-14.
Antenna beamwidth
(integrated)
8 degrees
Max path loss 150 dB (20 MHz channel, integrated antenna)
Range (optical line-of-sight) 27 km (17 miles) at channel width 20 MHz
54 km (34 miles) at channel width 40 MHz
Over-the-air encryption Proprietary scrambling mechanism.
Weather sensitivity Sensitivity at higher modes may be reduced during high
winds through trees due to Adaptive Modulation Threshold
changes
Error correction FEC