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This section describes factors to be considered when planning the proposed link end sites, including grounding, lightning protection and equipment location for the wireless device, power supply, AUX-ODU-LPU-L and AUX-ODU-LPU-G unit (if installed).

Grounding and lightning protection recommendations

• The wireless device should be placed on the pole at a height that is at least 1 meter below the top of the pole. In this case, there is a significant probability that the lightning strikes the pole and not the wireless device. The pole should be properly grounded: connected to the building lightning protection circuit according to your local regulations.
•  All equipment must be connected at stabilized and surge protected power sources which must be properly grounded.
• The end of the FTP service cable that is connected to the power supply should be assembled with a shielded RJ-45 connector. The other end of the FTP service cable connected to the wireless device should be assembled with unshielded (standard) RJ-45 connector.
• The power supply is grounded via a three-conductor power cord and a grounded socket.
• AUX-ODU-LPU-G and AUX-ODU-LPU-L grounding is performed using grounding bolt.
• Antenna pole and wireless device should be connected to the common ground ring. Grounding cables should be no less than 10AWG thick and must use corrosion-resistant connectors.
• Special attention should be paid if the external antenna used is not DC-shorted. In this case, an additional lightning arrestor should be used between the antenna and ODU.

Requirements to the lightning protection unit AUX-ODU-LPU-L location

Requirements to the lightning protection unit AUX-ODU-LPU-G location