NorthStar 972 Install Manual

GM972DH

Northstar 972 Dual Head Install Guide

Revision B

Northstar 972DH Install Guide

Dual Head Support for 972

Thank you for purchasing a second Control Head for your Northstar 972 Integrated Chart Plotter. This accessory 

kit allows you to install a Control Head for your 972 at a second steering station that mimics the behaviour of 

the first head.

This document describes the components of the dual head support install kit (972DH-IK) and how to install and 

troubleshoot them. For warranty information and install information related to the Control Head, please refer to 

the install manual included with the control head. 

What’s in the Box

This install kit includes a Y-Cable for the control signals, a six foot DVI cable and a DVI mini hub.

Critical Do’s and Don’ts

•   Never put an extension between the Black Box and the Y-Cable.

•   Alway use good practice in cable routing, securing and service loops.

•   Be sure to mount the DVI Mini Hub in a dry location. It is not waterproof.

•   Mount the DVI Mini Hub close to the black box for ease of service.

•   Be sure to use service / drip loops — they provide a path for any water to drip away from the 

equipment as well as easy access for service of the equipment.

•   Always tighten jackscrews on DVI connectors. Otherwise, they will not function properly.

Basic Installation

Find a suitable location for the DVI Mini Hub. A good location will be:

•   within six feet of the Black Box

•   dry — the DVI Mini Hub is NOT waterproof

•   easily accessible

Secure the DVI Mini Hub using the integrated mounting bracket.

Electrical Connections

Connect the included 6-foot DVI cable between the Black Box and the DVI Mini Hub. Then connect the two 

Control Head DVI cables to the other side of the Mini Hub. To assure a secure connection, be sure to tighten the 

jackscrews on all DVI connectors. 

Connect the Y-Cable for the control signals to the Black Box. The Y-Cable must be connected directly to the 

Black Box for your system to work properly.

Then connect the two Control Head cables to the Y-Cable.

Verify proper operation of the system by turning on both heads and observing normal operation.

Qty

Part name

Part number

1

DVI Mini Hub w/Integrated Mtg Bracket & 6 Ft DVI Cable

MINIDVI

1

972 Control Head Y-Cable

WA621

1

Northstar 972DH Install Guide

GM972DH