GPS 126/128 Marine Navigator GPS 126 shown ZOOM Owner's Manual & Reference ® Software Version 2.0 or above © 1997 GARMIN International, Inc 1200 E. 151st Street, Olathe, KS USA 66062 Tel: 913-397-8200 or 800-800-1020 Fax: 913-397-8282 Web Site Address: www.garmin.com GARMIN (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey, SO51 9AQ, U.K. Tel: 011-44-1794-519944 Fax: 011-44-1794-519222 GARMIN (Asia) Corp. 4th Fl., No. 1., Lane 45, Pao-Hsing Road, Hsin Tein, Taiwan R.O.C. Phone: 886.02.917.3773 Fax: 886.02.917.1758 All rights reserved. No part of this manual may be reproduced or transmitted in any form or by any means, electronic or manual, including photocopying and recording, for any purpose without the express written permission of GARMIN. Information in this document is subject to change without notice. GARMIN reserves the right to change or improve its products and to make changes in the content without obligation to notify any person or organization of such changes or improvements. GARMIN, AutoLocate,TracBack, and are all trademarks of GARMIN International and may not be used without the expressed permission of GARMIN. January 1998 - Part #190-00151-00 Rev. A - Printed in Taiwan. i INTRODUCTION GPS 126/128 OWNER'S MANUAL Packing List Welcome to the easiest-to-use fixed-mount GPS on the water! The GPS 126 and GPS 128 represent GARMIN's continuing commitment to provide mariners with quality navigation information in a versatile, accurate, and user-friendly design which will be useful for years to come. Due to the similarity between the GPS 126 and GPS 128, we have addressed both units in one manual. This manual is organized into four sections for your convenience: Introduction gives a quick overview of the manual and contains the table of contents and glossary of navigation terms. Getting Started introduces you to the basic features of the unit with a quick-start orientation to the GPS 126/128. This section has been designed to acquaint you with the unit and provide a basic working knowledge necessary to use the unit in typical conditions. Reference provides detailed explanations of advanced features and operations in a topical format. This allows you to concentrate on a specific topic quickly, without reading through sections of text that you may not need. The Appendix section contains step by step instructions on how to initialize the unit for first time use, installation instructions and items with multiple listings, such as: map datums, time offsets, and the index. Packing List Before getting started with your GPS receiver, check to see that your GARMIN GPS 126/128 package contains the following items. If you are missing any parts, please contact your dealer immediately. Standard Package: · GPS 126/128 Unit · Power/Data Cable · Quick Reference Guide * The GPS 128 also comes with an external antenna with 30' cable. See your GARMIN dealer for accessories, including our PC kit. Thanks for choosing the GARMIN GPS 126/128. We hope it will meet all of your navigation needs. · Mounting Bracket with knobs · Owner's Manual ii INTRODUCTION Caution The GPS system is operated by the government of the United States, which is solely responsible for its accuracy and maintenance. The system is subject to changes which could affect the accuracy and performance of all GPS equipment. Although the GPS 126/128 is a precision electronic NAVigation AID (NAVAID), any NAVAID can be misused or misinterpreted and, therefore, become unsafe. Use the GPS 126/128 at your own risk. To reduce the risk of unsafe operation, carefully review and understand all aspects of this Operator's Manual and thoroughly practice operation using the simulator mode prior to actual use. When in actual use, carefully compare indications from the GPS 126/128 to all available navigation sources including the information from other NAVAIDs, visual sightings, maps, etc. For safety, always resolve any discrepancies before continuing navigation. NOTE: This device meets requirements for Part 15 of the FCC limits for Class B digital devices for home or office use. It has been tested for compliance with all necessary FCC standards. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to other equipment, which can be determined by turning the equipment off and on, the user is encouraged to try and correct the interference by relocating the equipment or connecting the equipment to a different circuit than the affected equipment. Consult an authorized dealer or other qualified service technician for additional help if these remedies do not correct the problem. Operation is subject to the following conditions: (1) This device cannot cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. The GPS 126/128 does not contain any user-serviceable parts. Repairs should only be made by an authorized service center. Unauthorized repairs or modifications could void your warranty and your authority to operate this device under Part 15 regulations. iii INTRODUCTION Table of Contents SECTION ONE Introduction Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1 Navigation Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 SECTION TWO Getting Started Keypad Usage & Data Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 Primary Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 Power On & Marking a Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 Position Page and Map Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 Going to a Waypoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 Compass Page & Cancelling A GOTO . . . . . . . . . . . . . . . . . . . . . . . .12 Clearing the Map Display, Adjusting Contrast, & Power Off . . . . . . . .13 SECTION THREE Reference Satellite Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 Backlighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 Position Page & User Selectable Fields . . . . . . . . . . . . . . . . . . . . . . . .16 Marking a Position & Position Averaging Function . . . . . . . . . . . .18, 19 Waypoint Pages & Managing Waypoints . . . . . . . . . . . . . . . . . . . . . . .19 TracBack Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26 Creating and Using Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30 Using the Compass & Highway Pages . . . . . . . . . . . . . . . . . . . . . . . .33 Map Page, Zooming, & Panning . . . . . . . . . . . . . . . . . . . . . . . . . .37, 38 Map Page & Track Log Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . .39, 40 Menu Page & Distance/Sun Calculation . . . . . . . . . . . . . . . . . . . . . . .43 System Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46 Navigation Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47 Interface Setup & DGPS Interface . . . . . . . . . . . . . . . . . . . . . . . . .44, 45 Navigation Simulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51 Appendix A­­Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 Appendix B--Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54 Appendix C--Specifications & Wiring . . . . . . . . . . . . . . . . . . . . . . . .58 Appendix D--Messages and Time Offsets . . . . . . . . . . . . . . . . . . . . . .60 Appendix E­­Map Datums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62 Appendix F­­Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64 1 INTRODUCTION Glossary The GPS 126/128 is a powerful navigation tool that can guide you anywhere in the world. To better understand its operation and capabilities, it may be helpful to review the basic terms and concepts briefly explained below. Other navigation and GPS definitions used in the manual are defined in the appropriate reference sections of the manual. Almanac Data Satellite constellation information (including location and health of satellites) that is transmitted to your receiver from every GPS satellite. Almanac data must be acquired before GPS navigation can begin. Bearing The compass direction from your position to a destination. Course Made Good (CMG) The bearing from the "active from" position (your starting point) to your present position. Crosstrack Error (XTK) The distance you are off a desired course in either direction. Desired Track (DTK) The compass course between the "from" and "to" waypoints. Differential GPS (DGPS) An extension of the GPS system that uses land-based radio beacons to transmit position corrections to GPS receivers. Estimated Time of Arrival (ETA) The time of day of your arrival at a destination. Estimated Time Enroute (ETE) The time left to your destination at your present speed. 2 INTRODUCTION Glossary Grid Coordinate system that projects the earth on a flat surface, using square zones for position measurements. UTM/UPS and Maidenhead formats are grid systems. Ground Speed The velocity you are traveling relative to a ground position. Latitude The north/south measurement of position perpendicular to the earth's polar axis. Longitude An east/west measurement of position in relation to the Prime Meridian, an imaginary circle that passes through the north and south poles. Navigation The process of traveling from one place to another and knowing where you are in relation to your desired course. Position An exact, unique location based on a geographic coordinate system. Track (TRK) The direction of movement relative to a ground position. Universal Transverse Mercator (UTM) A grid coordinate system that projects global sections onto a flat surface to measure position in specific zones. Velocity Made Good (VMG) The speed you are traveling in the direction of the destination. Waypoint A specific location saved in the receiver's memory. 3 INTRODUCTION Navigation Basics The GPS 126/128 provides steering guidance and navigation information using degrees, a measurement measured in a clockwise direction from a north reference. North is described as 000º, east as 090º, south as 180º, and west as 270º. The diagram and compass rose below provide a graphic illustration of the navigation terms used by the GPS 126/128. More information on basic navigation and GPS are available at your local library or bookstore. "ACTIVE TO" WAYPOINT "A CT IV E NORTH NORTH BRG SP EE D TRK DTK "ACTIVE FROM" WAYPOINT 4 GR OU ND DIST LE G" ANC CK RA ST OS CR R RO ER E INTRODUCTION P J M G F Q B I H U D LR Turns the unit on and off and activates screen backlighting. Scrolls through the main data pages in sequence and returns display from a submenu page to the main page. Captures a position and displays the mark position page. Displays the GOTO page with the waypoint highlighted for GOTO operation. Confirms data entry and activates highlighted fields to allow data entry. Returns the display to a previous page, or restores a data field's previous value. Marks your present GPS position and instantly sets a return course while providing steering guidance. DATA ENTRY The arrow keypad is used for all data entry. Use the U and D keys to select letters, numbers, and menu options; use the L and R keys to move the cursor forward or backward along the line. Press F to confirm your entry. Keypad Usage and Data Entry Decreases the scale of the moving map. Increases the scale of the moving map. Selects alphanumerical characters and menu choices and moves the field highlight from field to field. Moves the selected character field and moves the field highlight from field to field. 5 INTRODUCTION Primary Pages Before we start the tour, let's briefly look at the five primary information pages used for the GPS 126/128. To switch between pages press either the Q or J keys (see below). Primary Pages J Q Satellite Page The Satellite Page shows satellite positions and signal strength. Satellite positions are displayed using two circles and a center point. The outer circle shows satellites on level with the horizon; the inner circle is 45º above the horizon; and the center point represents satellites directly overhead. Knowing satellite positions will show you the direction of any blocked signals. The bottom of the page conta ...