Cisco Systems 4028650000000 Satellite Receiver & Satellite Antenna Grounding

Safety Precautions, Continued

19.Replacement Parts: When replacement parts are required, be sure the service technician uses replacement parts specified by Cisco, or parts having the same operating characteristics as the original parts. Unauthorized part substitutions made may result in fire, electric shock or other hazards.

20.Safety Check: Upon completion of any service or repairs made to this product, ask the service technician to perform safety checks to determine that the product is in safe operating condition.

21.Outdoor Antenna Grounding: If an outside antenna or cable system is connected to this product, ensure that the antenna or cable system is properly grounded to provide protection against voltage surges and built-up static charges. Appropriate sections of the National Electrical Code (NFPA 1990) provide information with respect to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, connection to grounding electrodes, and requirements for the grounding electrode (see Satellite Receiver and Satellite Antenna Satellite Antenna Grounding).

Satellite Receiver & Satellite Antenna Grounding

Before you can operate your satellite receiver system, both the satellite receiver chassis and the satellite antenna LNB connection(s) must be properly grounded. For information about grounding your satellite receiver, also referred to as “receiver”, and satellite antenna follow:

Grounding the receiver: The receiver ground connection is made from the shield1) conductor attached to the RF coaxial cable “F” connector (rear panel RF IN input) to an external grounding rod via a receiver/antenna grounding block. A separate grounding wire connects the grounding block (and the satellite antenna LNB grounding block) to the grounding rod.

Grounding the LNB and/or VHF/UHF antenna: The antenna ground connection is made from the satellite LNB/antenna ground and/or the VHF/UHF terrestrial antenna discharge unit to an external grounding rod via a receiver/antenna grounding block.

General grounding information: The actual ground/cable connections made depend on your site installation requirements, and on the type of satellite antenna and/or VHF/UHF terrestrial antenna you have. If your satellite antenna installation includes a dual-port LNB, both RF coaxial cables must be routed to the grounding block. When connecting RF coaxial antenna cables to the grounding block, looping the antenna cables as shown in the accompanying figure helps to direct moisture away from the grounding block. Always choose the shortest route possible when connecting RF coaxial cables to the receiver/antenna grounding block and when connecting the grounding wire(s) to the grounding rod.

1)Multi-strand (braided) shield surrounding the center conductor of the coaxial cable.

4035197 Rev C D9865 Satellite Receiver Installation and Operation Guide vii