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SECTION ONE - Introduction
961 INSTALLATION MANUAL Revision A Page 1
SECTION ONE - Introduction
Welcome
T
he Northstar 961 Installation Manual describes how to install the entire
961 system (control head, processor, and antenna). It describes the physi-
cal, mechanical, and electrical characteristics of the unit, as well as how to
select the right location, and mount and wire the system. This manual
also describes how to interface, troubleshoot, and maintain the Northstar
961 GPS chart navigator. For complete details on operating the unit, see
the Northstar 961 Operations and Reference Manual (part number
GM1700).
The terms “unit” and “961” are used throughout this manual to refer to
the 961 GPS chart navigator. The 961X is differential-ready so you can
interface it to an external differential receiver. The 961XD has a built-in
differential receiver. Unless specifically indicated, all information in this
manual refers to both the X (non-differential) and XD (differential) ver-
sions of the unit.
Who should read this manual
The Northstar 961 Installation Manual is intended for marine technicians
who are configuring and installing the 961 GPS chart navigator.
Scope of this manual
In this manual, you’ll find information on the following procedures:
•
choosing a location
•
mounting and wiring the unit
•
installing the antenna
•
testing the unit
•
interfacing the 961 to other instruments
•
troubleshooting the unit
•
configuring the NMEA output ports
•
setting the auxiliary port
CAUTION!
To obtain the best performance from your 961, Northstar
strongly recommends that you have an authorized Northstar
dealer perform the installation. Proper installation of the North-
star 961 is of utmost importance to accurately receive and
effectively use GPS signals under a variety of weather condi-
tions.