Symmetricom 1000 User Manual

Chapter 3 Installing the TimeProvider
Making Connections

 TimeProvider User’s Guide

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.