User's Guide

4.1.3 Uninterruptible Power Supply

CHC recommends that the user use an uninterruptible power supply (UPS) to power

the receiver. The internal battery can also operate as a UPS for up to 24 hours. A UPS

protects the equipment from power surges and spikes and keeps the receiver

running during short power outages.

For more information, contact the user’s local CHC dealer.

4.1.4 Lighting and Surge Protection

CHC recommends that the user install lightning protection equipment at permanent

sites. All connections to the receiver should have surge protection. Typically, the

minimum protection should include a surge protector in the antenna feed line, on

the receiver's power supply system. If serial devices are attached to the receiver,

those serial connections should also be provided with surge protection. Also, protect

any communications and power lines at building entry points. If the user uses other

antennas, such as a radio modem that distributes real-time correction messages,

install surge protection on those antenna feeds as well.

No surge protection devices can offer protection unless they are connected to an

excellent ground using very low impedance conductors. Equipment damage caused

by electrical surges occurs in many permanent installations even though surge

protection is in place. Commonly, this is because the grounding system used was

designed to protect against AC electrical hazards rather than to dissipate the sudden,

high current surges caused by lightning. Please consult with a lightning protection

expert or research the topic when planning permanent installations.

For more information, contact the user’s local CHC dealer.

4.1.5 Placing the Antenna

The antenna location will have a significant effect on the quality of the user’s P5

receiver's performance. In temporary developments, it may not always be possible

to set up in an ideal location with an excellent sky view. However, when installing a

permanent station, be sure to plan the antenna location and mounting system

carefully.

The general requirements for the antenna location and mount are:

 Keep the distance from the objects that may cause the multipath effects (such as

buildings, trees, reflective surface) for at least 200 m (656 feet)

 Clear sky above 10 degrees elevation

 Away from electromagnetism interference region (e.g., Microwave station, radio