Appendix B
Using a Surge Arrester
B.1
Introduction
These instructions cover the installation of the Arbiter Systems Model AS0094500, Surge Arrester.
The AS0094500 performs two basic functions:
1. Provides a solid and reliable grounding point for the antenna system connected to a GPS
receiver;
2. Protects connected equipment from the damaging effects of atmospheric static electricity and
induced voltage spikes from nearby lightning strikes or other electrical events.
B.2
Description
The AS0094500 is a three-terminal device with two type F connectors and one ground terminal.
One of the F connectors connects to the GPS antenna and the other F connector to the GPS
receiver in the clock. A screw terminal provides a point to connect an earth ground wire. Being
weatherproof, the AS0094500 can be mounted outdoors provided that the cabling and Type F
connectors are sealed from the weather. The device will also pass the DC current necessary to
energize the GPS antenna.
B.3
Installation
B.3.1
Mounting Location
Location is a key consideration when installing the Model AS0094500. Mount as close as possible
to a good earth ground, such as a grounding rod or station ground grid. The shorter the path
between the arrester and the earth ground, the more effectively and reliably it will bypass the
induced voltages.
B.3.2
Ground Connection
The Model AS0094500 can be grounded in two ways: (1) via the ground-wire screw connection, or
(2) by hard-mounting directly to a grounded metal surface.
