Chapter 3 Installing the TimeProvider

Making Connections

Warning: To prevent arcing, ensure that the lightning suppressor is installed away from electrical devices and cabling.

Warning: To prevent possible damage to the TimeProvider, use only the lightning suppressor supplied with the antenna kit.

Note: Use the following antenna installation instructions as a guideline only. Install the antenna using company-approved techniques, and follow all appropriate local building and electrical codes.

Note: To achieve optimum results, the TimeProvider GPS rooftop antenna requires a minimum cable length of 8 meters (27 feet) from the antenna to the TimeProvider system; this overall length includes the cable section to the lightning suppressor.

Recommendation: Symmetricom recommends that you use one of the following grounding points:

Valid roof ring ground system.

Cad weld to building structural steel.

Central office ground plate within 15 m of antenna cable entrance into building.

Order two cables, or a single cable run can be made from the antenna to the TimeProvider shelf. The cable can then be cut at the lightning suppressor location, and TNC connectors attached to the cut ends of the cable. The “xx” in the part number indicates the cable length.

72 TimeProvider User’s Guide

097-58001-02 Revision G – April 2008

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Symmetricom 1100, 1000 manual Making Connections