System Hardware Connectivity; Gps Receiver - Gps Antenna; Figure 3.1 Gps Antenna Cable With Tnc Connectors - ashtech Z-Xtreme System Manual

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System Hardware Connectivity

At this point, you should have an understanding of the function of each hardware com-

ponent of a GPS survey system and how the components relate to each other. In

order for the different components to function as a system, they must communicate.

This requires that the components be connected for both communication and power.

Here we will examine the connectivity of the GPS system hardware components.

Below is presented a list of all connections required to make the GPS survey system

function.

GPS Receiver – GPS Antenna

The GPS receiver requires an antenna in order to observe the data being transmitted

by the satellites. Therefore, the GPS antenna must be connected to the GPS

receiver. This connection is made through a coaxial cable ranging in length from 3 to

30 meters. This cable serves two purposes, it supplies power to the GPS antenna

from the receiver, and it sends the satellite signals observed by the antenna to the

receiver. Figure 3.1 shows a typical GPS antenna cable with a TNC connector on

each end.

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