Garmin SOUNDER 125 Manuel utilisateur

GPS 125

Sounder

Marine

Navigator

ZOOM

Owner’s Manual

Reference

125 Man Rev B 7/23/98 11:47 AM Page i

Software Version 2.0 or above

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, Romsey, SO51 9AQ, U.K.

Tel: 011-44-1794-519944

Fax: 011-44-1794-519222

GARMIN (Taiwan) Corp.

4th Fl., No. 1., Lane 45,

Pao-Hsing Road,

Hsin Tien, Taiwan R.O.C.

Phone: 886.02.917.3773

Fax: 886.02.917.1758

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, and TracBack are all trademarks of GARMIN Corporation

and may not be used without the expressed permission of GARMIN.

July 1997 Part #190-00111-00 Rev. B Printed in Taiwan.

125 Man Rev B 7/23/98 11:47 AM Page ii

INTRODUCTION

Overview

GPS 125

SOUNDER

Operator’s

Manual

Welcome to the easiest-to-use combination GPS/Depth Sounder on the

water! The GPS 125 Sounder represents GARMIN’s continuing commitment to

provide mariners with quality navigation and fishfinding information in a versa-

tile, accurate, and user-friendly design which will be useful for years to come. It

is important that you take the time to read through the operator’s manual to

understand the operating features of the GPS 125 Sounder. The manual is orga-

nized 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 takes you through step-by-step instructions to initialize the

receiver for first-time use and introduces you to the basic features of the unit

with a quick-start orientation to the GPS 125 Sounder. 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 the advanced features and oper-

ations of the GPS 125 Sounder in a topical format. This allows you to concen-

trate on a specific topic quickly, without reading through entire sections of text

that you may not need.

The Appendix section contains installation instructions and items with mul-

tiple listings, such as: map datums, time offsets, and the index.

See your GARMIN dealer for accessories including our PC kit and standard

or temperature reading in-hull and transom-mount transducers.

Thanks for choosing the GARMIN GPS 125 Sounder. We hope it will help

you meet all of your navigation and fishfinding needs.

125 Man Rev B 7/23/98 11:47 AM Page iii

Caution

INTRODUCTION

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 125 Sounder is a precision electronic

NAVigation AID (NAVAID), any NAVAID can be misused or misinterpreted

and, therefore, become unsafe.

Use the GPS 125 Sounder 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 125 Sounder 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 compli-

ance with all necessary FCC standards. This equipment generates, uses, and

can radiate radio frequency energy and, if not installed and used in accor-

dance with the instructions, may cause harmful interference to radio commu-

nications. 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 125

Sounder 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.

125 Man Rev B 7/23/98 11:47 AM Page iv

INTRODUCTION

Table of

Contents

SECTION ONE Introduction

Glossary/Navigation Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4

SECTION TWO Getting Started

Turning On and Initializing the Receiver . . . . . . . . . . . . . . . . . . . . . .5-7

Primary Page Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9

Marking a Waypoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

Position Page and Map Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . .11-12

Going to A Waypoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Using the Highway Page and Cancelling a GOTO . . . . . . . . . . . . .13-14

Using The Sounder Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14-17

Clearing a Map and Turning Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

SECTION THREE Reference

Satellite Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17-19

Position Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Marking, Saving, and Using Waypoints . . . . . . . . . . . . . . . . . . . . .21-28

TracBack Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29-30

Creating and Using Routes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31-36

Sounder Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37-40

Map Plotting, Zooming, and Cursor Movement . . . . . . . . . . . . . . .41-43

Using the Compass and Highway Navigation Pages . . . . . . . . . . . .44-46

Menu Page and Distance/Sun Calculation . . . . . . . . . . . . . . . . . . . . . .47

Track Log Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47-48

Interface Setup and DGPS Interface . . . . . . . . . . . . . . . . . . . . . . . .49-51

System Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51-52

Navigation Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53-55

Map Page Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55-56

Alarms Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Sounder Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58-61

Navigation Simulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62-63

Appendix A––Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64-69

Appendix B—Wiring and Specifications . . . . . . . . . . . . . . . . . . . .70-71

Appendix C—Messages and Time Offsets . . . . . . . . . . . . . . . . . . .72-73

Appendix D—Map Datums . . . . . . . . . . . . . . . . . . . . . . . . . . . . .74-76

Appendix E––Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77-78

125 Man Rev B 7/23/98 11:47 AM Page 1

Glossary

INTRODUCTION

The GPS 125 Sounder is a powerful navigation tool that can guide you any-

where 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 (BRG)

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 (XTE)

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.

Ground Speed (SOG)

The velocity you are traveling relative to a ground position.

125 Man Rev B 7/23/98 11:47 AM Page 2

INTRODUCTION

Glossary

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 imagi-

nary circle that passes through the north and south poles.

Position

An exact, unique location based on a geographic coordinate system.

Sensitivity

A measure of how sensitive the sounder is to sonar echoes.

Speed Over Water (SOW)

The speed you are traveling over the surface of the water.

Thermocline

A layer of water separating warmer water above from cooler water below.

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 your destination.

Waypoint

A specific location saved in the receiver’s memory.

Whiteline

A term applied to the checkered portion of the sonar display which shows the area

of strongest sonar return (typically the bottom).

125 Man Rev B 7/23/98 11:47 AM Page 3

Navigation

Basics

INTRODUCTION

NORTH

“ACTIVE FROM”

WAYPOINT

NORTH

DTK

CROSSTRACK ERROR

BRG

TRK

GROUND SPEED

DISTANCE

“ACTIVE TO”

WAYPOINT

“ACTIVE LEG”

The GPS 125 Sounder provides steering guidance and

navigation information using degrees, a measurement mea-

sured 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 125

Sounder. More information on basic navigation and GPS are

available at your local library or bookstore.

125 Man Rev B 7/23/98 11:47 AM Page 4

Getting Started with Your GPS

Welcome to the exciting world of GARMIN GPS!

The GPS 125 Sounder represents GARMIN’s continuing

commitment to provide marine users with quality navi-

gation information in a versatile, user-friendly design

they will enjoy for years to come. To get the most out

of your GPS receiver, be sure to read through the ini-

tialization and Getting Started sections of this manual,

and refer to the reference section for complete details

on the GPS 125 Sounder’s advanced features.

Initializing Your GPS for First-Time Use

The first time you power up your new GPS 125

Sounder is an important step in getting the best possi-

ble future GPS performance.

Because a GPS receiver can only receive signals

from satellites above the horizon, it needs to know

what satellites to look for at any given time. By using

an almanac (a timetable of satellite numbers and their

orbits) stored in the receiver’s memory, the GPS 125

Sounder can determine the distance and position of

any GPS satellite and then use this information to

determine your position.

To obtain this almanac data, your GPS receiver

needs to be initialized or given the opportunity to “find

itself”, the very first time it is turned on. Once you

have initialized the unit, the GPS 125 Sounder will

compute future fixes more rapidly, usually in a few

minutes.

Remember, that initializing the unit is only neces-

sary under the following conditions:

• First-time use from the factory

• If the receiver has been moved over 500 miles

from the last calculated position with power

off

• If the receiver’s memory has been cleared and

all stored data has been lost

Welcome Page

The welcome page will

appear as soon as the GPS

125 Sounder is turned on

and remain on while the

unit conducts a brief

self-test.

GETTING

STARTED

Initialization

125 Man Rev B 7/23/98 11:47 AM Page 5

Initializing the Receiver

The receiver is shipped from the factory in

AutoLocate™ mode, which enables the GPS 125

Sounder to determine its location anywhere in the

world. To speed up the initialization process, we recom-

mend using EZinit described below, which will usually

provide a fix in a few minutes.

Before you initialize, make sure your GPS 125

Sounder unit, antenna, and transducer have been cor-

rectly installed on your boat according to the instruc-

tions in Appendix A.

To turn the GPS 125 Sounder on:

1. Press and hold

until the receiver turns on.

The welcome page will be displayed while the unit

conducts a self test.

Once testing is complete, the welcome page will be

replaced by the status page, with the EZinit prompt

ready for you to select one of two initialization

methods:

•Select Country––allows you to initialize the

receiver by selecting your present position from a

list of countries in the GPS 125 Sounder’s internal

database. This usually provides a position fix in a

few minutes.

•AutoLocate

––allows the GPS 125 Sounder to

initialize itself and calculate a position fix without

knowing your present position. This usually pro-

vides a position fix in 7.5-15 minutes.

If the EZinit prompt has not automatically

appeared on the Satellite Page:

1. Press the

key.

Note: If the EZinit prompt appears at any time after

you have initialized the receiver (because satellite sig-

nals are being obstructed by trees, etc.), highlight ‘No

Re-Init’ with the arrow keypad and press ENTER.

To initialize the receiver:

1. If the ‘country’ option is not highlighted, press the

key repeatedly to move the field highlight to the ‘coun-

try’ option and press the

key.

Initialization

GETTING

STARTED

The EZinit prompt will

automatically appear if the

receiver needs to be initial-

ized. The prompt may also

appear during normal use if

the antenna is shaded.

Use the arrow keypad to

highlight the country,

region, or state of your pre-

sent position from the list

and press ENTER. If the

country is not listed, select

the closest country instead.

125 Man Rev B 7/23/98 11:47 AM Page 6

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