RightWay GPS Navigator RW 430 Guía de usuario descargar pdf (Pagina 34)

4 Setup Guidelines

GPS RTK Base GPS Receiver User Guide

• Trimble recommends that you install lightning protection

equipment at permanent base station locations. Equipment

should include a gas capsule lightning protector in the GPS and

radio antenna feed line and appropriate safety grounding. A static

dissipater near the antennas can reduce the likelihood of a direct

lightning strike. Also protect any communications and power

lines at building entry points. For more information, contact your

local Trimble dealer, or go to the Huber and Suhner website

(www.hubersuhnerinc.com).

• Trimble recommends that you use surge protection equipment

on all permanently installed equipment.

Permanent installation antenna cabling for the AgGPS RTK

Base 450/900 GPS receiver

Many permanent base station installations have unique cabling

requirements. Depending on the available infrastructure, you may need

to mount the antenna a considerable distance from the receiver.

The AgGPS RTK Base 450/900 receiver can withstand a loss of 12 dB

between the GPS antenna and the receiver. The degree of loss in a

coaxial cable depends on the frequency of the signal passing through it.

This table lists some common cable types and the maximum length you

can use before an inline amplifier for GPS frequencies is required.

Cable type Maximum length (for use without an inline amplifier)

RG-214 30 m (100 ft)

LMR-400 70 m (230 ft)

LMR-500 85 m (280 ft)

LMR-600 106 m (350 ft)

Heliax LDF4/50 165 m (540 ft)

Heliax LDF4.5/40 225 m (740 ft)

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RightWay GPS Navigator RW 430 Guía de usuario Pagina 34