Garmin GPS Receiver 126 User Manual

GPS 126/128

Marine

Navigator

GPS 126 shown

ZOOM

Owner’s Manual

Reference

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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 simi-

larity between the GPS 126 and GPS 128, we have addressed both units in

one manual. This manual is organized into four sections for your conve-

nience:

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 oper-

ations 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 ini-

tialize the unit for first time use, installation instructions and items with mul-

tiple 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 miss-

ing any parts, please contact your dealer immediately.

Standard Package:

• GPS 126/128 Unit

• Power/Data Cable

• Mounting Bracket with knobs

• Owner’s Manual

• 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.

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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 dis-

crepancies 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 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

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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 A––Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

Appendix B—Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Appendix C—Specifications & Wiring . . . . . . . . . . . . . . . . . . . . . . . .58

Appendix D—Messages and Time Offsets . . . . . . . . . . . . . . . . . . . . . .60

Appendix E––Map Datums . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Appendix F––Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

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INTRODUCTION

Glossary

The GPS 126/128 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 satel-

lites) 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.

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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.

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INTRODUCTION

Navigation

Basics

The GPS 126/128 provides steering guidance and navi-

gation 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

NORTH

“ACTIVE FROM”

WAYPOINT

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INTRODUCTION

Turns the unit on and off and

activates screen backlighting.

Keypad Usage

and Data Entry

Scrolls through the main data

pages in sequence and returns

display from a submenu page

to the main page.

Captures a position and dis-

plays the mark position page.

Displays the GOTO page with

the waypoint highlighted for

GOTO operation.

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 cur-

sor forward or back-

ward along the line.

Confirms data entry and

activates highlighted fields

to allow data entry.

Returns the display to a previ-

ous page, or restores a data

field’s previous value.

Press

to confirm

your entry.

Marks your present GPS posi-

tion and instantly sets a return

course while providing steer-

ing guidance.

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.

L R

Moves the selected character

field and moves the field

highlight from field to field.

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INTRODUCTION

Primary Pages

Before we start the tour, let’s briefly look at the five

primary information pages used for the GPS 126/128.

Primary Pages

To switch between pages press either the

keys (see below).

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.

Satellite Page

The bottom of the page contains a row of signal

The Satellite Page will

allow you to monitor

satellite signal reception

and strength.

strength bars corresponding to each satellite being used.

Position Page

The Position Page shows you where you are, what

direction you’re heading, and how fast you’re going.

The top of the page contains a compass tape which

is a graphic representation of your heading.

The graphic compass tape reflects your head-

ing only while you are moving.

Your track and speed are indicated immediately

below. Underneath are two user-selectable fields for a

variety of data. The current position is displayed in lati-

tude and longitude or a user selectable grid format. A

12/24 hour clock is also provided.

Position Page

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INTRODUCTION

Map Page

The Map Page acts as a window. It allows you to

view your position, the “path” you have traveled over,

and nearby waypoints.

Primary Pages

A diamond icon in the center of the screen repre-

sents your current position. As you move, you will see a

thin line called a track log appear along the path you

have just covered. Names of stored waypoints and

waypoint symbols can also be shown on the map.

The bottom corners of the screen always display

your current track and speed. When going to a way-

point, highlighting an on-screen waypoint, or using the

panning target crosshair, the corresponding distance

and bearing are shown at the top corners of the screen.

Navigation Page

Map Page

A navigation page gives you steering guidance when

going to a waypoint. The GPS 126/128 has two naviga-

tion page choices: the Highway Page and the Compass

Page. The Highway Page is the default and will be

briefly explained here. The Compass Page is covered on

page 36.

The Map Page shows your

progress on a moving track

plotter and gives you a

bird’s-eye-view of sur-

rounding waypoints.

The Highway Page uses a graphic highway to show

your movement in relation to your desired course. The

upper section shows bearing and distance to the way-

point and your current track and speed. The middle

portion contains the actual highway. The highway indi-

cates the crosstrack error, or distance and direction,

your are off-course from your waypoint. Always turn in

the direction the highway is pointing. For example, if

the highway points straight up, no turn is needed. If the

highway points right, you need to turn right until the

highway points straight up. The pointer just below the

CDI scale always points to your selected waypoint, rela-

tive to the direction you are moving. The remainder of

the page contains two user-selectable fields.

Highway Page

With the Highway Page,

you will get graphic steer-

ing guidance when navigat-

ing a route or going to a

single waypoint.

Menu Page

The last primary page is the Menu Page. The Menu

Page gives you access to the GPS 126/128’s waypoint

management, route, and setup features through a list of

submenus. The Menu Page is covered on page 43.

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GETTING

STARTED

Getting Started Tour

Now that you are familiar with the primary pages,

it’s time to take a tour. This is a live tour and is to be

conducted with your unit installed and with the boat in

the water. The tour will take you through the receiver’s

basic features and functions as you move about on the

water and assumes that the GPS 126/128 is turned on

and initialized, (see page 52 for initialization proce-

dure) and that you have not changed any of the factory

settings (units of measure, selectable fields, etc.). If

these settings have been changed, the pictures and

descriptions in this manual may not match what you

see on your screen.

Power On &

Marking a

Position

Navigation Simulator

If you are not able to take the Getting Started Tour

with your boat in the water, you may use the built-in

navigation simulator to practice using the GPS

126/128. To use the simulator, see page 51.

The Welcome Page will

be shown while the unit

conducts a self test.

Marking a Position

To begin the tour, let’s take the position you have

acquired (either by just initializing the unit or by hav-

ing turned the unit on) and mark it as a waypoint for

future reference.

^{1. Press the}M ^{key to capture and hold your position.}

To mark a position, you must have obtained a

2D or 3D fix, or have the receiver in simulator

mode. If you try to mark a position without a

position fix, you will be alerted with a ‘No GPS

Position’ message.

Press the UP arrow to

move forward through the

alphabet or numbers and

the DOWN arrow to

move backward.

The mark position page will appear, showing the

captured position and a default 3-digit waypoint name.

Let’s change the default name to something a little more

meaningful, like ‘DOCK’.

2. Press the down arrow once to move the field highlight

from the ‘SAVE?’ field to the name field.

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GETTING

STARTED

^{3. Press}F ^{to clear the default waypoint name.}

4. Press and hold the

key to scroll through the

Position and

Map Pages

alphabet until the letter ‘D’ appears.

5. Press the

Rkey once to move the character highlight

to the next character space.

6. Repeat steps 3 and 4 until the word ‘DOCK’ is dis-

played.

^{7. Press}F ^{to complete entry of the name.}

Each waypoint may also be assigned a custom way-

point symbol for easy waypoint recognition on the map

page.

^{1. Press}F ^{to activate the symbol menu.}

^{2. Select the anchor symbol and press}F^.

The arrow keypad is used

for all data entry. Use the

UP and DOWN keys to

select letters, numbers, or

menu options, and use the

LEFT and RIGHT keys to

move the cursor forward or

backward along the line.

3. Press the

key to highlight the ‘DONE?” field.

^{4. Press}F ^{to confirm the selected symbol.}

^{5. With the ‘SAVE?’ field highlighted, press}F ^{to con-}

firm that you want to save the position as a waypoint

named ‘DOCK’.

The mark position page will now be replaced by

the Position Page (or whatever page was displayed

prior to pressing the

key). The ‘DOCK’ waypoint

is now stored in the GPS 126/128’s memory, and will

remain there until you manually remove it or clear the

receiver’s memory. For more on waypoint management,

see pages 19-24.

Using the Position and Map Pages

Now that you’ve marked a position, let’s see how

the Position and Map Pages can be used to monitor

your progress as you head out into the open water.

Position Page

As always, ensure your primary focus is on

boating traffic and monitor the GPS126/128

briefly when operating your boat.

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GETTING

STARTED

Using the Position and Map Pages (cont.)

As you head out, the Position Page will help you

monitor your movement.

Position and

Map Pages

Graphic

Compass Tape

Track Over

Ground

Current Speed

User-

Selectable

Field

User-

Selectable

Field

Position

Display

12/24 Hour

Time

The direction you are moving (your track) and your

speed are displayed on the upper part of the page, just

below the graphic compass tape. The latitude and longi-

tude, along with two user-selectable displays, are con-

tinuously displayed in the middle of the page, and the

time of day is displayed below.

The Map Page displays

your present position as a

diamond icon and provides

a real-time graphic “bread-

crumb” display of your

track right on the screen.

Now let’s change the display to the Map Page and

watch the track log of our tour:

^{1. Press the}J ^{key to change from the Position Page}

to the Map Page.

To view a larger area on the Map Page, let’s change

the zoom scale from .2 (default) to 1.0 nautical mile.

To select a larger zoom scale on the Map Page:

^{1. Press the}H ^{key until ‘1.0 n.m. zoom scale’ appears.}

Your current position is shown as the diamond in

the middle of the screen. The dark circle below the dia-

mond represents the position you created, with the line

between the two showing your track.

The moving map’s default

screen orientation is track-

up. “Track up” means that

your current direction of

travel is always up (or

towards the top of) the

screen. It can also be set for

north up, or desired track-

up orientation through the

map setup page.

1. Once you have reached an area that allows for gener-

al changes in direction without interfering in the pas-

sage of other boats, mark your current position again

and name this waypoint “CHANNL”. (See ‘Marking a

Position’ on page 18.)

2. Next, make a moderate turn in any direction thats safe

for navigation and proceed for another 3 minutes.

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GETTING

STARTED

Going To a Waypoint

Going To a

Waypoint

Once you’ve stored the “CHANNL” waypoint in

memory, you can use the GPS 126/128 to guide you to

it by performing a simple GOTO. A GOTO is nothing

more than a straight-line course from your present posi-

tion to the destination you’ve selected.

Use caution when navigating. A “straight-line”

course reflects the shortest distance to a waypoint,

and does not navigate around obstructions, such

as land or buoys, etc.

Now that you have moved away from ‘CHANNL’ for

three minutes, let’s try navigating back to it.

To select a GOTO destination:

The GOTO waypoint page

allows you to select your

destination from a list of all

available waypoints in the

GPS 126/128’s memory.

^{1. Press the}G ^key.

2. The GOTO waypoint page will appear, displaying all the

waypoints in memory in alphabetical order.

3. Use

to highlight the ‘CHANNL’ waypoint.

^{4. Press the}F ^{key to confirm that you want to navi-}

gate to the displayed waypoint.

^{5. Press the}J ^{key to view the Graphic Highway Page.}

Distance to

Waypoint

Bearing to

Waypoint

Track Over

Ground

Speed Over

Ground

Once a GOTO is activated,

the GPS 126/128 will

provid steering guidance

until the GOTO is can-

celled. To cancel a GOTO,

highlight the cancel prompt

at the bottom of the page

and press ENTER.

Destination

Waypoint

“Finish Line”

Destination Waypoint

CDI Scale

Directional

Pointer

Your Relative

Position

User-

Selectable

Fields

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REFERENCE

Going To a Waypoint (continued)

The GPS 126/128’s Highway Page provides graphic

steering guidance to a destination, with an emphasis on

a straight-line course to the desired waypoint and the

distance and direction you are off course. The bearing

and distance to a waypoint–along with your current

track and speed, are displayed at the top of the screen,

with two user-selectable fields shown at the bottom.

GOTO Waypoint

& Cancelling

GOTO

As you head toward your destination, the middle

section of the screen provides visual guidance to your

waypoint on a moving graphic “highway”. The pointer

just below the CDI scale always points to your selected

waypoint relative to the direction you are moving.

Your present position is represented by the diamond

in the center of the course deviation scale. The line

down the middle of the highway represents your

desired track. As you navigate toward a waypoint, the

highway will actually move, indicating the direction

you’re off course, relative to the position diamond on

the CDI scale. To stay on course, simply steer toward

the center of the highway.

The 126/128 will also pro-

vide steering guidance with

a graphic Compass Page.

To change the display from

the Highway Page, press

ENTER twice.

While navigating, you may decide to use the

Compass Page (see picture above left) instead of the

Highway Page.

To select the Compass Page:

^{1. While viewing the Highway Page, press}F ^twice.

The Compass Page will now become the displayed

navigation page. This page provides a directional point-

er to your destination by using a rotating compass dis-

play to show direction of travel. It provides better steer-

ing guidance at slower speeds for travel with many

directional changes.

To switch back to the Highway Page, press ENTER

twice.

Once you reach the selected

distance from the destina-

tion (based on your present

speed and course), an

arrival message will appear

on the message page.

Cancelling a GOTO

If you decide to stop navigating to the active way-

point, all you have to do is cancel the GOTO.

To cancel an active GOTO:

^{1. Press the}G ^key.

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REFERENCE

2. Use the arrow keypad to move the field highlight to

the ‘CANCEL GOTO?’ prompt at the bottom of the page

^{and press}F^.

Clearing the

Map, Adjusting

Contrast, &

Power Off

Clearing a Cluttered Map Display

After you’ve used the GPS 126/128 for a few trips,

you may find that your map display has become a bit

messy from keeping track of your every move. For

practice, let’s clean up the screen by clearing the track

log (the plot points left on the Map Page) we’ve just

created during the Getting Started Tour.

^{1. Press}J ^orQ ^{until the Map Page appears and}

^pressF^.

2. Use the

key to move the field highlight to the

‘TRACK SETUP’ option.

^{3. Press}F ^{to access the track setup page.}

Highlight the ‘CLEAR

LOG?’ prompt and press

ENTER to clear the track

log. Once all 1024 points

are used, the oldest point

will be continuously deleted

to make room for the latest

track log point.

4. Highlight the ‘CLEAR LOG?’ option. The clear log con-

firmation page will appear.

5. Use the

key to highlight the ‘Yes’ prompt.

^{6. Press}F ^{to finish.}

Adjusting the Contrast

You can adjust the screen contrast from the Satellite

Page and also from the Menu Page (see page 47)

To adjust the contrast from the Satellite Page:

1. Press the

appears.

key until the Satellite Page

2. Press the arrow keypad left or right until the desired

^{level is reached, and press}F^.

Turning the Receiver Off

You’ve now gone through the basic operation of

your new GPS receiver. We encourage you to experi-

ment with the GPS 126/128. If you encounter any

problems using the unit or want to take advantage of

the GPS 126/128’s more advanced features, refer to the

reference section of this manual.

Instantly change the screen

contrast by pressing the

arrow keypad while viewing

the Satellite Page.

To turn the GPS 126/128 off:

^{1. Press and hold the}P ^{key for 3 seconds.}

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REFERENCE

Satellite Page

Horizontal

Accuracy

Status

Field

Satellite Page

Skyview

Display

Signal Strength

Indicators

The GPS 126/128’s Satellite Page displays the status

of various receiver functions. The status information

will help you understand what the GPS 126/128 is

doing at any given time, and will tell you whether or

not the receiver has calculated a position fix.

The GPS 126/128’s

Sky View and Signal Strength Bars

Satellite Page will help

you determine which

satellites are in view, and

whether or not any satel-

lites are being “shaded”

or blocked. (See satellites

07 and 19 above).

The sky view and signal strength bars give you an

indication of what satellites are visible to the receiver,

whether or not they are being used to calculate a posi-

tion fix, and the signal quality. The satellite sky view

shows a bird’s-eye view of the position of each available

satellite relative to the unit’s last known position. The

outer circle represents the horizon (north or track up);

the inner circle 45º above the horizon; and the center

point directly overhead. You can use the sky view to

help determine if any satellites are being blocked, and

whether you have a current position fix (indicated by a

‘2D NAV’ or ‘3D NAV’ in the status field). You can also

set the sky view to a track-up configuration by changing

the “orientation” option on the Map Page. (See pg. 41

for Map Setup instructions.)

By periodically monitor-

ing the signal strength

bars at the bottom of the

page and the north up

sky view, you will be able

to see how moving to

another area with a

clearer view of the sky

will improve satellite

reception and speed up

signal acquisition.

When the receiver is looking for a particular satel-

lite, the corresponding signal strength bar will be blank

and the sky view indicator will be highlighted. Once the

receiver has found the satellite, a hollow signal strength

bar will appear, indicating that the satellite has been

found and the receiver is collecting data from it. The

satellite number in the sky view will no longer appear

highlighted. As soon as the GPS 126/128 has collected

the necessary data to calculate a fix, the status field will

indicate a 2D or 3D status.

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Receiver Status and EPE

Receiver status is indicated at the top left of the

page, with the current horizontal accuracy (EPE, esti-

mated position error, in feet or meters) at the top right.

The status will be shown as one of the following condi-

tions:

Receiver Status

& Screen

Backlighting

Searching— the GPS 126/128 is looking for any

available satellites in view.

AutoLocate— the GPS 126/128 is initializing and

collecting new almanac data. This process can take

5 minutes, depending on the satellites currently in

view.

Acquiring— the receiver is collecting data from

available satellites, but has not collected enough

data to calculate a 2D fix.

2D Navigation— at least three satellites with

good geometry have been locked onto and a 2-

dimensional position fix (latitude and longitude) is

being calculated. ‘2D Diff’ will appear when you are

receiving DGPS corrections in 2D mode.

The signal strength bars at

the bottom of the page will

not appear until the GPS

126/128 has found the

satellites indicated at the

bottom of the screen.

3D Navigation— at least four satellites with good

geometry have been locked onto, and your position

is now being calculated in latitude, longitude and

altitude. ‘3D Diff’ will appear when you are receiving

DGPS corrections in 3D mode.

Poor GPS Coverage— the receiver isn’t tracking

enough satellites for a 2D or 3D fix.

Not Usable— the receiver is unusable, possibly

due to abnormal satellite conditions. Turn the unit

off and back on to reset, and reinitialize the receiv-

er if necessary.

Simulator— the receiver is in simulator mode.

Screen Backlighting

The GPS 126/128 feature illuminates the screen

display for a user-defined interval (the default is 15 sec-

onds). There are three stages of backlighting. When

backlighting is on, a bulb icon will appear at the bot-

tom left of the sky view. To adjust the duration of

screen backlighting, refer to the system setup section

(see page 47).

When backlighting is on, a

bulb icon will appear on

the Satellite Page.

Use the icon to determine

if backlighting is turned

on during daylight hours.

Note: A bulb icon will appear on the Satellite Page

when backlighting is on.

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EZinit Option Prompt

The Satellite Page also provides access to the EZinit

prompt whenever a position fix has not been calculated.

(The unit must be in searching, AutoLocate, acquiring,

simulator, or poor coverage mode.) This allows you to

reinitialize the unit (see Appendix A), and is useful if

you have traveled over 500 miles with the receiver off

and must initialize your new position. (The EZinit

prompt will automatically appear if the receiver needs

to be initialized. The prompt may also appear during

normal use if the antenna is blocked from receiving

satellite signals.

EZinit Prompt

and Memory

Erase

Note: The GPS 126/128 features an internal lithium

battery that will maintain the unit’s memory when the

receiver is not running.

Memory Erase Function

You may erase the GPS 126/128’s memory in four

quick steps. This will cause all stored data to be deleted,

including routes, waypoints, and the track log.

If you travel more than

500 miles with the receiv-

er off, reinitialize the unit

to your new position by

using the EZinit feature.

To access EZinit, press

ENTER from the Satellite

Page before any satellites

are acquired.

To erase all stored data:

1. Ensure that the GPS 126/128 is turned off.

2. While holding down the

key, press the

P ^key

to turn the unit on. After the unit turns on, release the

keys. A warning message will appear with “Yes?”

highlighted, and ask you to confirm your selection.

3. If you do not wish to erase all stored data, press

^andF ^{to cancel the emergency erase.}

4. If you do wish to complete the emergency erase, press

F ^{to confirm.}

Position Page

The second page in the GPS 126/128’s main page

sequence is the Position Page. This page shows you

where you are, what direction you’re heading, and how

fast you’re going. The Position Page is most useful when

you are traveling without an active destination way-

point. The graphic compass tape across the top of the

page indicates the direction you’re heading (only while

you’re moving).

Upon activating the

Memory Erase Function,

you will be asked to con-

firm your decision.

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REFERENCE

Position Page (continued)

Directly below the graphic compass tape are the

track and speed fields. Track is the compass direction

representing your actual course over the ground, and

Speed is how fast you’re moving. Below track and

speed are two user-selectable fields. Both user selec-

table fields can display a variety of information that will

aid in navigation The left field offers options for TRIP

(default), AVSPD, MXSPD, TTIME, and ELPSD. The

right field offers options for ALT (default), TTIME,

ELPSD, and TRIP.

Position Page

The following user-selectable options are available

on the Position Page:

Trip Odometer (TRIP)— total distance

traveled since last reset.

Trip Timer (TTIME)— total (cumulative)

time in which a ground speed has been

maintained since last reset.

The speed and track dis-

played on the position

page may fluctuate at

slow speeds (or when

Elapsed Time (ELPSD)— hours and

minutes since last reset.

Average Speed (AVSPD)— average speed

traveled.

you’re

not

moving)

because of position errors

caused by Selective

Availability.

Maximum Speed (MXSPD)— maximum

speed traveled since last reset.

Altitude (ALT)— vertical distance above

sea level.

To change the user-selectable fields

1. Highlight the left or right user-selectable field and

press

2. Use the U orD key to scroll through the avail-

able options.

^{3. Press}F ^{to confirm your selection.}

The trip odometer, trip timer, and average speed

fields are linked. Resetting one of these options in a

user-selectable field will automatically reset the corre-

sponding data in the other. This ensures that informa-

tion shown in these fields reflects your current trip.

The user-selectable fields

on the Position Page give

you a variety of informa-

tion to choose from.

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Altitude Field

When the GPS 126/128 is acquiring satellites or

navigating in the 2D mode, the last known altitude is

used to compute your position. In cases where the GPS

126/128 has 2D coverage, entering your approximate

altitude will enable the receiver to determine a 3D fix.

Altitude Field &

Marking a

Position

Note: The altitude can not be changed when the

GPS 126/128 has a 3D position fix.

To enter an altitude:

1. Ensure that ‘ALT’ is displayed in the user-selectable

field.

^{2. Highlight the ‘ALT’ value field, and press}F^.

^{3. Enter a value, and press}F^.

Directly below the user-selectable fields is the

Position field. The position field shows the current GPS

position in latitude and longitude (default) or a user

selectable position format (see navigation setup page

47). Directly below the position field is the time. Time

can be displayed as a 12– or– 24 hour clock (see system

setup page 46).

Resetting the trip odome-

ter will erase the previous

mileage and set the

odometer to 0.

Marking A Position

The GPS 126/128 allows you to mark and store up

to 500 positions as waypoints. A waypoint can be

entered by taking an instant electronic fix, by manually

entering coordinates (pg. 21), or using the bearing and

distance to a known position (pg. 22).

To mark your present position:

^{1. Press}M^{. The mark position page will appear,}

showing the captured position and a default three-

digit name.

^{2. To save a default name and symbol, press}F ^to

confirm the ‘Save?’ prompt.

To enter a different waypoint name:

You may enter a known

altitude to assist the GPS

126/128 in establishing a

3D fix.

^{1. Highlight the waypoint name field, and press}F^.

^{2. Make the appropriate changes, and press}F^.

^{3. Highlight ‘SAVE?’, and press}F^.

Note: To enter a different waypoint symbol or com-

ment, see pg. 23.

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REFERENCE

To add this waypoint to a route:

1. Highlight the ‘Add to route number’ field, and press

F^.

Position

Averaging &

Waypoint Pages

^{2. Enter a route number, press}F ^{to confirm and}

^pressF ^{again to save the waypoint.}

Position Averaging Function

The GPS 126/128 positioning averaging function

will help reduce the effects of selective availability

when marking a waypoint.

Note: As the GPS 126/128 calculates the FOM, it

will rapidly change before it stabilizes on one number.

1. After you have pressed the

‘AVERAGE?’ field and press

key, highlight the

. The Figure of Merit

(FOM) field will display the value reflecting estimated

accuracy of the averaged position.

2. The unit will continue averaging until you have high-

^{lighted ‘SAVE?’ and pressed}F^.

The GPS 126/128 will

save new waypoints with

default three-digit

Waypoint Pages

name. To add the way-

point to a route, enter the

desired route number,

highlight ‘SAVE?’, and

press ENTER.

The GPS 126/128 has three waypoint pages that let

you quickly manage up to 500 waypoints. These

pages— nearest waypoints, waypoint list, and waypoint

definition— can be accessed through the Menu Page.

To select a waypoint page:

1. Access the Menu Page, and highlight a waypoint

page option.

^{2. Press}F^.

Nearest Waypoints Page

The nearest waypoints page shows the nine nearest

waypoints within 100 miles of your present position,

with the bearing and distance noted for each waypoint.

This page will let you retrieve a waypoint definition

page or GOTO a selected waypoint right from the list.

After initiating the posi-

tion averaging function, a

Figure of Merit value will

be displayed, and the

‘SAVE?’ field will auto-

matically be highlighted.

To review the waypoint definition page of a

selected waypoint:

1. Highlight the desired waypoint.

^{2. Press}F^.

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REFERENCE

To return to the nearest waypoint page:

1. Highlight ‘DONE?’.

Nearest

Waypoints &

Waypoint List

^{2. Press}F^.

To go to a highlighted list waypoint:

^{1. Highlight the desired waypoint, and press}G^.

^{2. Press}F^.

Waypoint List Page

The waypoint list page provides a complete list of

all waypoints currently stored in the GPS 126/128 and

their respective waypoint symbols. The total number of

empty and used waypoints is also indicated. From the

waypoint list page, you can retrieve a waypoint defini-

tion page, delete all user-defined waypoints, delete way-

points by symbol, review a waypoint, or GOTO to a

selected waypoint.

To select a waypoint sub-

menu, highlight the

desired option and press

ENTER.

To delete all user-defined waypoints:

^{1. Highlight ‘DELETE WPTS?’, and press}F^.

An options page will appear, asking if you want to

delete all user-defined waypoints or if you want to

delete waypoints by symbol type.

Nearest Waypoints

Page

^{1. Highlight either ‘ALL’ or ‘SYMBOL’, and press}F^.

The compass heading

(BRG) and distance

(DST) to the nine nearest

waypoints are updated

continuously.

^{If you select ‘ALL,’ highlight ‘YES?’ and press}F

to confirm.

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REFERENCE

Waypoint List Page (continued)

If you highlight ‘SYMBOL,’ you’ll be asked to select a

symbol.

Waypoint List &

Proximity

^{1. select the symbol to be deleted and press}F^.

Waypoints

^{2. Press}F ^{to confirm the ‘DONE’ prompt, highlight}

^{the ‘YES?’ prompt, and press}F^.

Note: This feature is handy for deleting temporary

waypoints created by the TracBack function.

Proximity Waypoints

The GPS 126/128’s proximity waypoint function

warns you when you are getting too close to hazardous

waypoints. This function allows you to create up to

nine proximity waypoints and designate an alarm circle

for each waypoint. If you enter this circle, a warning

message will alert you.

To enter a proximity waypoint from the main

menu:

Deleting waypoints by

symbol enables you to

delete a specific group of

waypoints without losing

all other waypoints.

^{1. Highlight ‘PROXIMITY WPTS’ and press}F^.

2. Highlight the first empty waypoint field and press

F^.

3. Use the arrow keypad to scan through stored way-

points until desired waypoint appears (see page 24 ).

^{4. Press}F^{. The distance (DST) field will be automat-}

ically highlighted.

^{5. Press}F.^{Enter the desired distance.}

^{6. Press the}F ^key.

To review or remove a proximity waypoint:

^{1. Select a proximity waypoint and press}F^.

^{2. Highlight ‘REVIEW?’ or ‘REMOVE?’ and press}F^.

If ‘REVIEW?’ is chosen, the waypoint definition

page will appear, and you may make any changes to

the selected waypoint (see pgs. 22-24). If ‘REMOVE?’ is

chosen, the proximity waypoint page will reappear

^{with the waypoint removed. Press}Q ^orJ ^to

return to the Menu Page.

Quickly edit proximity

waypoints by highlighting

the waypoint name and

pressing ENTER.

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Waypoint Definition Page

Waypoint

Definition &

Reference

Waypoint

Name

Waypoint

Symbol

Position

Coordinates

Waypoints

Reference

Waypoint

Waypoint Comment

Distance from

Reference

Waypoint

Bearing from

Reference

Waypoint

Function Prompts

The waypoint definition page lets you create new

waypoints manually or review and edit an existing way-

point’s coordinates, symbols, and comments. It is also

used to delete an individual waypoint from memory

(see pg. 24). To create a new waypoint manually, you’ll

need to know its position coordinates or its approxi-

mate distance and bearing from an existing waypoint.

The GPS 126/128’s

advanced waypoint plan-

ning features allow you to

create new waypoints and

practice navigation with-

out ever setting foot out-

side.

To create a waypoint by entering coordinates:

1. From the waypoint definition page, highlight ‘NEW?’,

^{and press}F^.

If you create a new way-

point by entering coordi-

nates from a map, you

may want to re-mark the

waypoint’s exact position

once you get there.

^{2. Enter a waypoint name, and press}F^.

^{3. Press}F ^{to select a waypoint symbol, make your}

^{selection, and press}F^.

^{4. Highlight the ‘DONE?’ prompt, and press}F ^to

return to the waypoint page.

To re-define an existing

waypoint’s position coor-

dinates from the waypoint

definition page, simply

highlight the DST field

and press ENTER. Use the

LEFT arrow key to set the

distance to 0.00, and press

ENTER to confirm.

^{5. Highlight the ‘position’ field, and press}F^.

^{6. Enter your position, and press}F^.

^{7. Highlight the ‘DONE? prompt and press}F ^{to con-}

firm.

Reference Waypoints

To create a new waypoint manually without know-

ing its position coordinates, you’ll need to enter its

bearing and distance from an existing waypoint or your

present position.

The old coordinates will be

replaced by your present

position if you have

To create a new waypoint by referencing a stored

waypoint:

valid 2D or 3D position

fix.

1. From the waypoint definition page, highlight ‘NEW?’,

^{and press}F^.

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REFERENCE

Reference Waypoints (cont.)

^{2. Enter a waypoint name, and press}F^.

^{3. Highlight the ‘reference’ field, and press}F^.

Waypoint

Symbols &

Comments

4. Enter a reference waypoint name (or leave the field

^{blank to use your present position), and press}F^.

5. Enter the bearing and distance of your new waypoint

from the reference waypoint.

^{6. Press}F ^{to confirm the ‘DONE?’ prompt.}

Waypoint Symbols

The GPS 126/128 allows you to select one of 16

symbols for each waypoint for easy recognition on the

map display. From the symbol page, you may also

select how the waypoint appears on the map.

To select a waypoint symbol:

^{1. Highlight the symbol field, and press}F^.

Waypoint symbols enable

you to instantly get more

information about a way-

point than just its name.

2. Use the arrow keypad to select the desired symbol,

^{and press}F^.

3. The cursor will move to the display field, where you

can select how the waypoint information will be dis-

played on the map.

^{4. Press}F^{, and select one of the following display}

options: ‘name with symbol,’ ‘symbol only,’ or ‘com-

ment with symbol’.

^{5. Press}F ^{to confirm your selection, and}

again to confirm the ‘Done?’ prompt.

Waypoint Comments

Each waypoint stored in the GPS 126/128 has a

user-defined 16-character comment field. The default

comment is the UTC (or Greenwich mean time) date

and time of the waypoint’s creation.

To change or add a comment:

1. Highlight the ‘comment’ field.

^{2. Press}F^.

The waypoint comment

field will automatically

assign the date and time of

creation to the waypoint

comments field. You may

enter a 16-character user

comment at any time.

Note: You can clear the ‘comment’ field by pressing

the left side of the rocker keypad.

3. Enter the desired comment.

^{4. Press}F^.

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Renaming and Deleting Waypoints

The rename and delete function fields are located

along the bottom of the waypoint definition page.

Rename, Delete

& Scan

To rename a stored waypoint:

Waypoints

^{1. Highlight ‘RENAME?’, and press}F^.

^{2. Enter the new waypoint name , and press}F^.

^{3. Press}F ^{to confirm the ‘Yes?’ prompt.}

To delete a stored waypoint:

^{1. Highlight ‘DELETE?’, and press}F^.

^{2. Highlight the ‘Yes’ prompt, and press}F^.

Note: To delete a waypoint that’s part of a route,

first remove the waypoint from the route (see pg. 34),

and then delete it. If you attempt to delete a waypoint

that’s part of a route, you’ll be given a “Route Waypoint

Can’t be Deleted” message.

You may wish to quickly

save waypoints by press-

ing MARK and then

ENTER, thus assigning a

default name. You may

then rename the waypoint

at a later date. Any way-

point may be renamed at

any time.

Scanning Waypoints

As you manually enter a waypoint’s name, the GPS

126/128’s waypoint scanning feature will automatically

display the first numerical or alphabetical match of the

character you have entered. If you have more than one

waypoint that begins with the same letter or number,

move to the next character postion and continue enter-

ing the waypoint name. This helps eliminate the need to

always enter a waypoint’s complete name.

To scan waypoints from a waypoint field:

^{1. Highlight the waypoint name field, and press}F^.

2. Press the left side of the keypad to clear the name

field.

3. Scroll through the waypoints.

^{4. When you find the desired waypoint, press}F^.

Scanning waypoints from

the waypoint definition

page is quick and easy.

Simply highlight the

name, press ENTER, and

use the arrow keypad to

scroll through the names.

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Selecting a GOTO Destination

The GPS 126/128 provides four ways to navigate to

a destination: GOTO, MOB, TracBack, and route navi-

gation. The most basic method of selecting a destina-

tion is the GOTO function, which lets you choose any

stored waypoint as the destination and quickly sets a

direct course from your present position.

Select a GOTO

& MOB

Function

To activate the GOTO function:

^{1. Press}G^.

2. Select the waypoint you want to navigate to, and

^pressF^.

Once a GOTO waypoint has been activated, the

Compass Page or Highway Page will provide steering

guidance to the destination until either the GOTO is

cancelled or the unit has resumed navigating the active

route (see pg 30).

To cancel an active GOTO:

Select a destination way-

point from the GOTO

waypoint list.

^{1. Press the}G ^key.

^{2. Highlight ‘CANCEL GOTO?’, and press}F^.

Man Overboard Function

The GPS 126/128’s man overboard function (MOB)

lets you simultaneously mark and set a course to a

position for quick response to passing positions.

To activate the MOB mode:

^{1. Press the}B ^key.

^{2. Press}F ^{to begin MOB navigation.}

The GPS126/128 will now guide you to the MOB

waypoint until the MOB GOTO is cancelled. If you

want to save the MOB waypoint be sure to rename it.

The MOB function will overwrite any previous MOB

waypoint when it is activated.

Once the MOB mode has

been activated, steering

guidance will be provided

by the Compass or

Highway Page. Activating

another MOB will over-

write the previous MOB

waypoint.

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REFERENCE

TracBack Navigation

GARMIN’s patented TracBack feature allows you to

quickly retrace your path using the track log automati-

cally stored in the receiver. This feature eliminates the

need to mark waypoints along the way and manually

create and activate a route back to where you began

your trip. Once a TracBack route is activated, it will lead

you back to the oldest track log point stored in memory,

so it’s usually a good idea to clear the existing track log

at the start of each trip.

TracBack

To clear the track log and define a starting point

for a TracBack route:

^{1. From the Map Page, press}F.

^{2. Highlight the ‘TRACK SETUP’ option, and press}F^.

3. Highlight ‘CLEAR LOG?’, press

^{4. Highlight ‘Yes?’, and press}F^.

WARNING:

To activate a TracBack route:

Setting the track record-

ing to OFF will disable

the TracBack function.

^{1. Press}G^{, highlight ‘TRACBACK?’, and press}F^.

Once the TracBack function has been activated, the

GPS 126/128 will take the track log currently stored in

memory and divide it into segments called legs. Up to

30 temporary waypoints will be created to mark the

most significant features of the track log in order to

duplicate your exact path as closely as possible. These

points will be indicated by waypoint numbers begin-

ning with ‘T’ on the waypoint list, and by a “T” symbol

on the Map Page.

The active route page will appear, showing a route

from your present position to the oldest track log point

in memory. Steering guidance to each waypoint will be

provided back to the starting point of your track log.

Note: You may delete a TracBack waypoint from a

route, but only if the route is not active.

Highlight the ‘TracBack?’

prompt and press ENTER

to begin TracBack naviga-

tion.

Tips On the TracBack Feature

• Always clear your track log at the exact point that

you want to go back to (dock, boat ramp, etc.).

• The ‘Record’ option on the track log setup page

can be set to either the ‘wrap’ or ‘fill’ position.

• There must be at least two track log points stored

in memory to create a TracBack route.

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• If there are not enough available waypoints in

memory to create a TracBack route, you will be

alerted with a ‘waypoint memory full’ message,

and the receiver will use any available waypoints

to create a TracBack route with an emphasis on

the track log closest to the destination (the oldest

track log point in memory).

TracBack

• If the ‘Method’ option on the track log setup page

is set to a time interval, the TracBack route may

not follow your exact path. (Keeping the criteria

set to automatic will always provide the most

detailed TracBack route.)

• If the receiver is turned off or you lose satellite

coverage during your trip, the TracBack route will

simply draw a straight line between any point

where coverage was lost and where it resumed.

• If the changes in direction and distance of your

track log are complex, 30 waypoints may not be

enough to accurately mark your exact path. The

receiver will then assign the 30 waypoints to the

most significant points of your track, and simplify

segments with fewer changes in direction.

The TracBack feature will

navigate your track log

back to the oldest point in

the receiver’s memory.

• To save a TracBack route, copy route 0 to an open

storage route before activating another TracBack.

Activating another TracBack or storage route will

overwrite the existing TracBack route.

• Whenever a TracBack route is activated, the

receiver will automatically erase any temporary

waypoints that are not contained in routes 1-19.

If there are temporary waypoints stored in routes

1-19, the receiver will create any new temporary

waypoints using the first three-digit number

available. (You can also quickly delete all tempo-

rary TracBack waypoints in memory by using the

‘delete by symbol’ method described on pg. 21.)

The track log will be

divided into segments with

temporary waypoints to

create a route back to the

beginning of the track log.

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REFERENCE

Route Navigation

The last form of navigating to a destination with the

GPS 126/128 is to create a user-defined route. The

GPS126/128 lets you create and store up to 20 routes of

30 waypoints each. The route navigation feature lets

you plan and navigate a course from one place to

another using a set of pre-defined waypoints. Routes are

often used when it’s not practical, safe, or possible to

navigate a direct course to a particular destination (e.g.,

through a body of water).

Routes

Waypoint 2

(“active to” waypoint)

“Active Leg”

Waypoint 1

(“active from” waypoint)

Routes are broken down and navigated in smaller

segments called “legs”. The waypoint you are going to

in a leg is called the “active to” waypoint and the way-

point immediately behind you is called the “active from”

waypoint. The line between the “active to” and the

“active from” waypoint is called the “active leg.”

Whenever you activate a route, the GPS 126/128

will automatically select the route leg closest to your

position as the active leg. As you pass each waypoint in

the route, the receiver will automatically sequence and

select the next waypoint as the “active to” waypoint.

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REFERENCE

Route Definition Page

Route Definition

Page

Route

Number

Comment

Field

Desired

Leg Distance

Track of Leg

Total

Distance

Copy Field

Function Prompts

The bottom of the route definition page features

‘function’ fields which let you copy, clear, invert, or

activate the displayed route. Routes 1-19 are used as

storage routes, with route 0 always serving as the active

route you are navigating. If you want to save a route

that’s currently in route 0, be sure to copy it to another

open route or it will be overwritten by the next route

activation.

Routes enable you to store

and use groups of fre-

quently used waypoints

together.

Routes can be copied, cleared, inverted, and acti-

vated through the route definition page.

To select the route definition page:

1. Highlight ‘ROUTES’ from the Menu Page, and press

F^.

The ‘route number’ field is displayed at the top of

the page, with a 16-character ‘user comment’ field to

the right. If no user comment is entered, the field dis-

plays the first and last waypoint in the route. The way-

point list on the left side of the page accepts up to 30

waypoints for each route, with fields for desired track

and distance between legs. The total route distance is

indicated below the waypoint list.

Enter each waypoint in

the order you would like to

navigate the list. If you

enter

waypoint not

stored in memory, you’ll

need to define the position

on the waypoint definition

page.

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REFERENCE

Creating and Navigating Routes

To create a route from the route definition page:

^{1. Highlight the ‘route number’ field, and press}F^.

Using Routes

2. Using the

^{number and press}F^.

key select an empty route

^{3. Press}F ^{to begin entry of a route comment.}

^{4. Enter your comment, and press the}F ^key.

^{5. Press}F ^{to begin entering the first waypoint of}

your route.

6. Press

again to move to the next waypoint field.

As you continue entering waypoints, the list will auto-

matically scroll down.

Whenever you activate a route, it will automatically

select the route leg closest to your position as the active

leg. As you pass each waypoint in the route, the receiver

will automatically sequence and select the next way-

point as the “active to” waypoint.

You may use up to 16

characters to custom

name a route. The default

name will be the first and

last waypoint in the route.

Activating and Inverting Routes

After a route has been entered, it can be either acti-

vated in sequence or inverted from the route definition

page. The process of activating or inverting a stored

route takes a storage route (routes 1-19) and copies it

into the active route (route 0) for navigation. The stor-

age route is then no longer needed and will be retained

in its original format under its existing route number.

This system allows you to have an active route that

you may edit during navigation and save as an entirely

new route from the original. You will have to copy the

active route to an unused storage route to save it, since

new route or TracBack activation overwrites route 0.

To activate a route:

1. From the route definition page, highlight the ‘route

^{number’ field and press}F^.

To activate a route, high-

light the ‘ACT?’ prompt

and press ENTER.

2. Enter the route number to be activated, and press

F^.

^{3. Highlight ‘ACT?’, and press}F^.

To activate a route in inverted order:

1. Follow the steps above, but select ‘INV?’, and press

F^.

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Active Route Page

Once a route has been activated, the active route

page will display the waypoint sequence of your route

with the estimated time enroute (ETE) at your present

speed and the distance to each waypoint. As long as

you are navigating an active route, the active route page

will become part of the main page sequence of the unit.

The active route page will also allow you to change the

‘ete’ field to display desired track (DTK) or estimated

time of arrival (ETA) for each leg. You can also clear or

invert the active route.

Active Route,

Copying, &

Clearing

To display DTK or ETA for each leg:

^{1. Highlight ‘ETE’ or ‘DTK’, and press}F^.

^{2. Select ‘DTK’ or ‘ETA’, and press}F^.

The active route page also allows you to clear (stop

navigating) or invert the active route without using the

route definition page.

To invert a route from the active route page:

Active Route Page

Whenever you have an

active route, the active

route page will appear in

the main page sequence

after the Compass or

Highway Page.

^{1. Highlight ‘INVERT?’, and press}F^.

To stop route navigation:

^{1. Select ‘CLEAR?’, and press}F^.

Copying and Clearing Routes

The route definition page is also used to copy a

route to another route number. This feature is useful

when you make changes to the active (or TracBack)

route and want to save the route in its modified form

for future use.

To copy a route:

^{1. Highlight the ‘route number’ field, and press}F^.

2. Select the route number to be copied, and press

F^.

^{3. Highlight the ‘copy to’ field, and press}F^.

To copy a route, select an

open storage route and

press the ENTER key. If

you select a route that is

already used, you’ll be

alerted with a ‘Route Full’

message.

4. Scroll through the available routes and select a desti-

nation route number. (Only open routes will be avail-

^{able.) Press}F ^{to copy the route.}

To clear a route from memory:

^{1. Highlight the ‘route number’ field, and press}F^.

^{2. Enter the route number, and press}F^.

^{3. Select ‘CLR?’, and press}F^.

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REFERENCE

Editing Routes

A route can be edited anytime after its creation.

Editing Routes

& On-Route

GOTO’s

To edit a route from the active route page or

the route definition page:

^{1. Select the waypoint you want to edit, and press}F^.

An on-screen menu of editing choices will appear,

with options for reviewing, inserting, deleting, or

changing the waypoint field highlighted. This field con-

tains the following options:

• Review?— reviews the waypoint’s definition page

• Insert?— adds a new waypoint that precedes the

selected waypoint

• Remove?— deletes a selected waypoint

• Change?— replaces the selected waypoint with a

new waypoint

You may delete a waypoint from a route, but only if

the route is not active. Note: Editing the original storage

route will not affect route 0. If you want to save an edit-

ed version of route 0, save it to an open storage route.

Use the on-screen menu to

select the desired editing

function.

On-Route GOTO

At the beginning of this section, we mentioned that

the GPS 126/128 will automatically select the route leg

closest to your position as the active leg. This may mean

that you are not navigating to the first waypoint in the

active route. If you want to select a route waypoint with

which to begin navigation or you prefer to navigate a

route out of sequence, you can perform an ‘on-route

GOTO’ from the active route page.

To perform an ‘on-route GOTO’ from the active

route page:

^{1. Highlight the desired route waypoint, and press}G^.

2. Once the GOTO waypoint page appears with the way-

^{point highlighted, press}F^.

To edit or review a route

waypoint from the active

route page, highlight the

desired waypoint and

press ENTER.

Note that after you reach the on-route GOTO way-

point, the GPS 126/128 will automatically resume navi-

gating the rest of the route in sequence.

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REFERENCE

Using the Navigation Pages

Once you’ve selected a GOTO destination or acti-

vated a TracBack, MOB, or Route, the GPS 126/128

will provide graphic steering guidance to the destina-

tion with one of two navigation pages:

Navigation

Pages

Highway Page

Compass Page

To switch the navigation

page to the Highway Page,

press ENTER twice.

•The Highway Page (default) provides a graphic

highway that shows your movement relative to the

desired course, with an emphasis on your

crosstrack error (the distance and direction you

are off course). This page also features a course

deviation indicator (CDI) (see pg. 35). The

Highway Page is well-suited for water or off-road

recreation where straight-line navigation is possi-

ble.

•The Compass Page provides a directional point-

er to the destination, with a rotating compass dis-

play to show your direction of travel. The

Compass Page provides better steering guidance at

slow speeds with many changes in direction,

where straight-line navigation is not possible.

Both pages provide a digital display of the bearing

and distance to the destination, and your current speed

and track over the ground. You can switch to either

Navigation Page at any time.

To switch the navigation

page to the Compass

Page, press ENTER twice.

To select either Navigation Page:

^{1. Press}F ^{from the existing Navigation Page, and}

F ^{again to change the page.}

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REFERENCE

Selecting a User-Defined Navigation Page (cont.)

Navigation

Pages

User-Selectable

Field

User-Selectable

Field

The fields located in the lower corners of both pages

are user-selectable fields that allow you to display a vari-

ety of navigation values for your trip.

To access the user-selectable fields:

Use the user-selectable

fields to customize the

navigation pages.

^{1. Highlight either field, and press}F^.

2. Use the keypad to scroll through the possible options.

The following data options are available from the

Navigation Pages:

Estimated Time Enroute (ETE)— the time left

to your destination based on your present speed

and track.

Estimated Time of Arrival (ETA)— the time of

day of your arrival at a destination, based on current

ground speed and track.

Course to Steer (CTS)— the bearing which will

give you the most efficient way to stay on course to

your destination.

Crosstrack Error (XTK)— the distance you are

off the desired course in either direction. This field

will give you a digital representation of the CDI

scale.

The turn option will show

you the number of degrees

you need to turn to head

directly to your destina-

tion.

Velocity Made Good (VMG)— the speed you

are traveling toward the destination.

Turn (TRN)— the amount of correction in

degrees needed to travel directly to the destination.

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REFERENCE

Using the Highway Page

Bearing to

Waypoint

Distance to

Waypoint

Highway Page

Track Over

Ground

Speed Over

Ground

Destination

Waypoint

CDI Scale

Pointer

Graphic

Highway

User Selectable Fields

The GPS 126/128’s Highway Page provides graphic

steering guidance to a destination waypoint, with a

greater emphasis on the straight-line desired course and

the distance and direction you are off course. The bear-

ing and distance to a waypoint–along with your current

track and speed–are displayed at the top of the screen.

In this example, the

Highway Page indicates

that you are off course to

the left. Steer right to get

back on course. Notice the

highway always shows the

direction to turn. If the

highway leads straight up

the page, you should con-

tinue in your current

direction.

The middle of the screen provides visual guidance

to your waypoint on a moving graphic “highway.” Your

present position is represented by the diamond in the

center of the CDI scale. The line down the middle of

the highway represents your desired track. As you navi-

gate toward a waypoint, the highway will actually

move—indicating the direction you’re off course—rela-

tive to the position diamond on the CDI scale. When

the highway is pointing straight up the screen, the way-

point is directly ahead. If the destination waypoint is to

the left, the top of the highway will lead to the left, and

vice versa. To stay on course, simply steer in the direc-

tion the highway leads (left or right) until the highway

leads straight up the page.

Below the graphic highway is the “pointer.” The

pointer shows the direction of the waypoint relative to

the direction you are moving.

Below the pointer are two user-selectable fields.

If you do get off the desired course by more than

1/5th of the selected CDI range, the exact distance you

are off course will be displayed where the CDI scale set-

ting normally appears. If you get too far off course (the

highway has disappeared), a message box will appear to

indicate what course to steer to get back on course. (For

information on setting this scale, see pg. 48.) When the

distance reading reaches 0, you’ve reached your destina-

If you get too far off

course, a message box will

appear to indicate what

course to steer to get back

on course most efficiently.

tion

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REFERENCE

Using the Compass Page

Bearing to

Waypoint

Distance to

Waypoint

Compass Pages

Track Over

Ground

Speed

Destination

Waypoint

Compass

Ring

Pointer to

Waypoint

User-

Selectable

Field

User-Selectable

Field

The Compass Page provides better steering guid-

ance for travel at slow speeds (e.g., walking) and for

travel with many directional changes.

At the top of the page, the bearing (BRG) and dis-

tance (DST) to the waypoint are displayed. The dis-

tance displayed is the straight-line distance from your

present position to the destination waypoint. The bear-

ing indicates the exact compass heading from you to

the destination. Below the bearing and distance, track

(TRK) and speed (SPD) are displayed. The track is your

course over ground and the speed is your speed over

ground.

In this example, the com-

pass page indicates that

you are traveling in

northerly (334 degrees)

direction and the destina-

tion waypoint is north

(358 degrees) of your cur-

rent direction of travel.

The middle of the page features a rotating “compass

ring” that shows your course over ground while you

are moving, with a pointer arrow to the destination dis-

played in the center. The arrow shows the direction of

your destination waypoint, relative to the direction you

are moving. For instance, if the arrow points up, you

are going directly to the waypoint. If the arrow points

any direction (left, right, down, etc.), turn toward the

arrow until it points up and then continue in that

direction.

In this example, the com-

pass page indicates that

you are traveling in a

northerly (020 degrees)

direction and the

destination waypoint is

west (357 degrees) of

your current direction of

travel.

The bottom of the page shows two user-selectable

fields for ETE, ETA, CTS, XTK, VMG, or TRN.

When you are one minute away from your destina-

tion (based on your current speed and track over

ground), the GPS 126/128 will alert you with a flashing

on-screen message box.

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REFERENCE

Map Page

The GPS 126/128 features a powerful real-time

moving map that does much more than just plot your

course and route. The Map Page also provides you with

a target cursor that will let you pan ahead to nearby

waypoints, determine the distance and bearing to any

map position, and mark new waypoints while you

navigate.

Map Page

Bearing to

Waypoint

Distance to

Waypoint

Present

Position

Track Over

Ground

Speed Over

Ground

Note: A map scale repre-

sents the distance shown

from the bottom to the top

of the Map Page. For

example, when viewing

the 2 mile scale, the dis-

tance represented between

the top and bottom of the

screen is 2 miles.

The map contains 12 selectable range scales from

0.2 to 320 miles (0.5 to 600 km). The scale represents

the distance shown from the top of the screen to the

bottom. Move from scale to scale by using the dedicated

zoom keys (IN and OUT). Pressing IN decreases the

scale and pressing OUT increases the scale.

A diamond icon in the center of the page represents

your present position, with your track and/or route dis-

played as a solid line. Nearby waypoints are shown

with the corresponding name listed. You may select

which items are shown through the map setup sub-

menu page (see pages 40-41 for more information).

The four corners of the Map Page are used to dis-

play various navigation data, including the bearing and

distance to a destination waypoint and your current

track and speed over the ground. The two fields at the

top corners of the map show your bearing and distance

to one of three selectable destinations: an active destina-

tion waypoint; a highlighted on-screen waypoint; or the

panning target crosshair. If you are not navigating to a

waypoint or using the panning function, the top data

fields will not be displayed. The bottom corners of the

display always show your current track and speed.

The four corners of the

Map Page are used to

show your course and

speed and the distance to

either a cursor or to a des-

tination waypoint.

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REFERENCE

Zooming, Panning, and Pointing

There are three main functions you can perform

from the Map Page: zooming, panning, and pointing,

Zooming is increasing or decreasing the display scale of

the map. Panning is using a target crosshair and the

arrow keypad to “slide” the map window in any direc-

tion, including diagonally, to view the surrounding area.

Pointing is the act of highlighting a map position or

waypoint on the map in order to create a new waypoint,

review waypoint information, or GOTO a selected way-

point or map position.

Zooming,

Panning, &

Pointing

From the Map Page, you can also access the Map

and Track Setup menus (see page 40).

To select a zoom scale (even while panning):

1. Press

once for each level of increase or

decrease desired.

A crosshair will appear

when you activate the pan

function. The distance and

direction of the crosshair

from your current position

will be shown in the upper

corners of the Map Page.

2. Press and hold down either key to increase or

decrease by more than one scale.

To activate the pan function:

1. Press the arrow keypad in any direction.

As you begin to move the map, a crosshair will

appear. This crosshair will now serve as a target marker

for the moving map. The distance and bearing from

your present position to the target crosshair will appear

in the upper corners of the map. If you are conducting

a GOTO at the time you activate the panning function,

the crosshair bearing and distance will replace the bear-

ing and distance of the GOTO waypoint.

As you pan around the map, you’ll notice that the

target crosshair will point to on-screen waypoints and

highlight the waypoint name. Once a waypoint name is

highlighted, you can review its waypoint definition page

or execute a GOTO function right from the Map Page.

On-Screen Pointing

To review the definition page for a waypoint high-

lighted on the map:

The crosshair will “snap”

to displayed waypoints,

which allows you to quick-

ly review or GOTO the

selected waypoint right

from the Map Page.

^{1. Press}F^{. The waypoint definition page will appear.}

Review and make any desired changes to the high-

lighted waypoint.

2. When finished, highlight the ‘DONE?’ field and press

F^.

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REFERENCE

Zooming, Panning, & Pointing (continued

To go to a waypoint highlighted on the map:

Using the

Cursor

^{1. Press the}G ^{key.The GOTO waypoint page will}

appear with the waypoint’s name highlighted.

^{2. Press the}F ^{key to confirm.}

To stop panning and display present position:

^{1. Press the}Q ^key.

Using the Cursor to Mark and GOTO Waypoints

You may custom tailor the

Map Page to show way-

points by any of three

options.

During panning, the crosshair represents a target

position right on the moving map, with the range and

bearing to the target at the top corners of the screen.

To mark the target crosshair as a waypoint:

^{1. Press the}F ^{key to capture the position. The}

option menu will appear.

^{2. Select ‘MAP POSITION’ and press}F^.

^{3. Enter a new name, symbol, etc., and press}F^.

Marking a Cursor

Position

You can also use the target crosshair as an instant

GOTO destination. This function will mark and

instantly set a course for a new waypoint called ‘MAP’.

To mark a new waypoint

with the crosshair, simply

pan to the desired position

and press the ENTER key.

Select the appropriate

menu option and press

ENTER again.

To GOTO the target crosshair:

^{1. Press the}G ^{key to capture the position.}

^{2. Press the}F ^{key to confirm the MAP GOTO.}

To save the MAP waypoint, rename it, as it will be

overwritten the next time a map GOTO is executed.

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REFERENCE

Zooming, Panning, and Configuring (cont.)

From the waypoint definition page, you can also

define how each individual waypoint is displayed on

the map. The GPS 126/128 displays waypoints as a

name with a corresponding symbol (e.g., “nearest fuel”

and a gas pump symbol), a symbol only (e.g., a fish

symbol), or a 16-character comment and corresponding

symbol (e.g., “great view” and the camp site symbol).

The waypoint name has a six character limit while the

‘comment’ field has a 16-character limit, and there are

16 individual waypoint symbols available.

Using Cursor &

Map/Track Setup

To select a waypoint display option:

1. Highlight the symbol field (to the right of the name

^{field), and press}F^.

^{2. Move the cursor to the ‘display’ field, and press}F^.

3. Select one of the following display options: ‘name with

symbol,’ ‘symbol only,’ or ‘comment with symbol and

^pressF^.’

The map setup window

gives access to the map

setup and track setup

pages right from the Map

Page.

^{4. Press}F ^{to confirm the ‘DONE?’ prompt.}

5. Press

again (on the waypoint definition page) to

return to the Map Page.

The last function you can perform with a waypoint

highlighted on the Map Page is to perform a GOTO

directly to the waypoint.

To go to a waypoint highlighted on the Map Page:

^{1. Press}G^.

^{2. Press}F ^{to confirm the GOTO waypoint page.}

Accessing Map Setup/Track Setup Windows

You can access two additional pages—the map

setup page and the track setup page—from the Map

Page. Make sure that no waypoints are highlighted on

^{the map and press}F^{. The Map Page option menu}

will appear.

The Map Page’s default

screen orientation is track

up. “Track Up” means

that your current direction

of travel is always up (or

toward the top of) the

screen. It can also be set

for north up or desired

track up orientation.

To select map setup or track setup:

^{1. Highlight the desired choice, and press}F^.

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REFERENCE

Map Setup Page and Orientation

The map setup page lets you select Map Page and

satellite sky view (see pg. 14) orientation, as well as

specify what items are displayed. The Map and Satellite

Pages may be oriented to ‘NORTH UP,’ ‘TRACK UP’

(the direction of current travel), or ‘DTK UP’ (desired

track up, or the direction of travel to stay on course).

The default setting is track up.

Map & Track

Setup

To change the map orientation:

^{1. Highlight the ‘map’ field, and press}F^.

^{2. Select the desired orientation, and press}F^.

Note: Selecting the ‘DTK UP’ option will set the

satellite sky view to track up orientation.

The rest of the map setup page lets you specify

what items are displayed or plotted on the Map Page

by selecting ‘YES’ or ‘NO’ in the appropriate field.

• ’Rings’— displays the three present position range

rings on the map.

Use the track setup page

to control the way the GPS

126/128 manages your

track log.

• ’Route’— plots the straight leg lines between way-

points of an active route and displays all

route waypoint names.

• ’Nearest’— shows the nine nearest waypoints to your

position (black diamond) on the map.

• ’Names’— displays the waypoint name for the nine

nearest waypoints.

• ’Track Log’— displays and plots track points on the

map.

To turn a map item on or off:

1. Highlight ‘YES’ or ‘NO’ for the specific map item, and

^pressF^{. Select ‘YES’ or ‘NO' and press}F^.

Entering a time interval

into the track recording

method will help to

increase the distance you

can travel without using

up your track log., Using

Track Setup Page

The track setup page manages the GPS 126/128’s

track log data. From this page, you can select whether

to record a track log and define how it is recorded.

time interval will

To turn the track log on or off:

reduce the effectiveness of

TracBack.

^{1. Highlight the ‘record’ field, and press}F^.

^{2. Select ‘OFF, FILL, or WRAP’, and press}F^{. (Note:}

Turning the track recording off will prevent using

TracBack.

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REFERENCE

Track Method

The stored track method determines how often

positions are stored in the track log. The default setting

is automatic, which will store a track based on resolu-

tion. This setting gives the most efficient use of track

memory and provides the best TracBack route.

Track Log

Management

To change the method to record points based on a

specific time interval:

^{1. Highlight the ‘METHOD’ field, and press}F^.

^{2. Select ‘TIME INTERVAL’, and press}F ^twice.

^{3. Enter hours, minutes, and seconds, and press}F^.

4. Press

to exit the menu.

Track Log Display

The track log option gives you a choice of display-

ing or not displaying the track log. This only effects the

display on the Map Page and not the recording in mem-

ory. The track log will still be stored in memory as long

as the “record” setting is ‘WRAP’ or ‘FILL’. When set to

“on”, the display uses 1024 points.

The track setup menu lets

you instantly change track

features directly from the

Map Page.

Managing and Clearing the Track Log

The rest of the track setup window displays the per-

centage of available memory currently used to store

track log data, as well as function fields to clear the

track log memory and activate the TracBack feature.

To clear the track log:

^{1. Highlight ‘CLEAR LOG?’, and press}F^.

^{2. Highlight ‘Yes?’, and press}F^.

Note: It’s a good idea to clear the track log at the

end of the trail head, etc., in order to make the best use

of the TracBack feature.

Clear the track log any

time your screen gets clut-

tered or when starting a

new TracBack.

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REFERENCE

Menu Page

The GPS 126/128’s Menu Page provides access to

Menu Page &

Distance/Sun

Calculation

additional pages (submenus) that are used to select and

customize operation and navigation setup. These eight

pages are divided into categories by function. We’ve

already gone over the waypoint and route management

pages in their respective sections. Let’s review the rest

of these pages as they appear on the Menu Page.

To select a submenu page from the Menu Page:

^{1. Highlight the page, and press}F^.

^{2. To return to the Menu Page, press}Q^.

Distance and Sun Calculations

The distance and sun calculation page will give you

the distance and bearing between any two waypoints or

between your present position and a waypoint. It will

also calculate the sunrise and sunset (in local time) for

a particular date at either your present position or any

stored waypoint.

The Menu Page allows

you access to a variety of

waypoint, route, system

and setup features.

To perform a distance and sun calculation:

^{1. Highlight the ‘from’ field and press}F^{. Enter the}

^{desired waypoint, and press}F^.

^{2. Highlight the ‘to’ field and press}F^{. Enter the des-}

^{tination waypoint, and press}F^.

^{3. The ‘date’ field will become highlighted. Press}F

to enter the date you’ll arrive at your destination, and

^pressF^.

If you haven’t marked your present position as a

waypoint or you leave the ‘to’ field blank, the sunrise

and sunset at your present position will be shown.

Message Page

The GPS 126/128 will

calculate the sunrise and

sunset times of any stored

waypoint or your present

position. To calculate,

enter the date and year

and press ENTER.

The message page is used to display all messages in

the GPS 126/128. There are two types of messages:

temporary alerts (e.g., approaching a waypoint) and

condition alerts (e.g., WPT memory is full). All mes-

sages are indicated by a flashing on-screen box. After a

temporary alert has been viewed, it is cleared.

Condition alerts are displayed on the message page

until the condition has been resolved.

To view the message page:

^{1. Highlight the ‘MESSAGES’ field and press}F^.

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See Appendix C for a complete list of messages.

REFERENCE

Interface Setup

The GPS 126/128’s interface page lets you specify

the formats for connecting external devices. There are

six options: GRMN/GRMN, None/None, RTCM/None,

RTCM/NMEA, NMEA/NMEA, and None/NMEA. Each

option lists the input format first, followed by the out-

put format.

Interface Setup

& DGPS

To select I/O format:

^{1. Highlight the I/O field, and press}F^.

^{2. Select the desired setting, and press}F^.

The GRMN/GRMN setting is a proprietary format

that lets you exchange information such as waypoints,

routes, and track logs between two GARMIN GPS units

or a GARMIN GPS and a PC. There are ten data transfer

options: send alm, send wpt, send trk, send rte, send

prx, request alm, request wpt, request trk, request rte,

request prx.

To select a transfer option:

^{1. Highlight ‘HOST’, and press}F^.

^{2. Select a desired setting, and press}F^.

The selectable baud rate is

available for all RTCM

interface options.

To disable all interfacing capabilities, select the

None/None setting. If you want to output NMEA data

without any differential input capability, select

‘None/NMEA.’

DGPS Interface

The last two format settings allow the differential-

ready GPS 126/128 to accept RTCM DGPS corrections

in RTCM 104 version 2.0 format. Using DGPS correc-

tions will improve receiver accuracy to 1-5 meters,

regardless of errors induced by the government’s

Selective Availability (SA) program. Two RTCM options

are available: RTCM/NONE, which allows connection to

a beacon receiver with no output capability; and

RTCM/NMEA, which allows DGPS input and NMEA

output.

Alert messages will signal

any problems with DGPS

operation.

Once a RTCM setting has been selected, the GPS

126/128 will either automatically try to tune the last fre-

quency and bit rate you selected or will switch to the

default frequency of 304.0 kHz with a bit rate of 100

bps if no previous beacon has been tuned. You may also

enter your own frequency and bit rate if desired.

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REFERENCE

To enter a DGPS beacon frequency:

^{1. Highlight the ‘freq’ field, and press}F^.

^{2. Enter the desired frequency, and press}F^.

^{3. Highlight the ‘rate’ field, and press}F^.

^{4. Select the desired transmission rate, and press}F^.

DGPS Interface

Note: The ‘freq and ‘rate’ fields are active only

’

when the interface is set to RTCM/NMEA.

When the GPS 126/128 is receiving DGPS correc-

tions from the GBR 21, the ‘beacon receiver’ section of

the I/O setup page will display the beacon frequency

and signal strength, as well as the distance from the

transmitter to the beacon receiver. At the bottom of the

beacon receiver field, a status message will keep you

informed of DGPS activity:

• A ‘Tuning’ message will be displayed while a bea-

con signal is being tuned.

Choose an interface

option based upon what

equipment you are using

to transfer information.

• Once the beacon signal has been tuned, a

‘Receiving’ message will be displayed.

• If a beacon signal is tuned and no corrections are

being received, a ‘No Data’ message will be dis-

played.

• If a beacon signal cannot be tuned, a ‘No Status’

message will be displayed.

The message page will alert you to any problems

relating to DGPS operation. You may also monitor the

DGPS status from the status field on the interface page.

The GPS 126/128 will display one of three alert mes-

sages concerning DGPS operation:

No DGPS Position— there is not enough data

available to compute a DGPS position.

No RTCM Input— the beacon receiver is not

properly connected or the baud rates do not

match.

Once the RTCM/NMEA

option is selected, you can

manually tune the beacon

receiver from the frequen-

cy field.

RTCM Input Failed— DGPS data was being

received but has been lost.

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REFERENCE

System Setup

The system setup page is used to select the operat-

ing mode, time offset, and screen preferences. The GPS

126/128 has two operating modes:

System Setup,

Date/Time &

Time Format

•

Normal Mode operates the unit using satellite

tracking information.

•

Simulator Mode allows you to operate the unit

without acquiring satellites, and is ideal for prac-

ticing or entering waypoints and routes while at

home.

To select an operating mode:

^{1. Highlight the ‘mode’ field, and press}F^.

^{2. Select a mode, and press}F^.

Date and Time Setup

The date and time is located directly below the

mode field.

The GPS 126/128’s two

operating modes are

accessed through the sys-

tem setup submenu.

Note: Date and time information is derived from the

GPS satellites and cannot be changed by the user.

Because the time shown is UTC time (Greenwich

mean time), you will need to enter a time offset to dis-

play the correct local time for your area. To determine

the time offset for your area, note your position and

refer to the chart in Appendix D.

To enter the time offset:

^{1. Highlight the ‘offset’ field, and press}F^.

^{2. Enter the time offset, and press}F^.

Note: Move the cursor to the left to change the plus

or minus sign.

Time Format

The time display shown on the system setup and

Position Pages may be set to display the time in a 12- or

24-hour format.

To display the correct

local time, you must enter

the appropriate offset

from the chart at the end

of Appendix C.

To select the time format:

^{1. Highlight the ‘hours’ field, and press}F^.

^{2. Select 12- or 24-hour display, and press}F^.

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REFERENCE

Screen Contrast

The GPS 126/128 has adjustable screen contrast

controlled by an on-screen bar scale.

Screen Contrast

& Backlighting

To set the screen contrast from the Menu Page:

^{1. Highlight the ‘contrast’ field, and press}F^.

2. Adjust the bar scale to the desired contrast, and

^pressF^.

Note: The screen contrast can also be adjusted by

pressing the rocker keypad while viewing the Satellite

Page (see pg. 13).

Screen Backlighting Timer

The screen backlight timer is adjustable for 15, 30,

60, 120, or 240 seconds. The timer also may be set to

the “Stay On” setting for continuous use. Whenever

backlighting is on, a bulb icon will appear on the

Satellite Page.

To set the backlight timer:

The “Stay On” setting will

keep your backlighting on

continuously.

^{1. Highlight the ‘light’ field, and press}F^.

^{2. Select the desired setting, and press}F^.

^{3. To turn lighting on and off, press the}P ^briefly.

Navigation Setup

The navigation setup submenu page is used to

select units of measurement for position formats, map

datums, CDI scale, units, and heading information.

Position Formats

The default position format for the GPS 126/128 is

latitude and longitude in degrees and minutes

(hdddºmm.mmm’). You may also select degrees, min-

utes and seconds (hdddºmm’ss.s’’); degrees only

(hddd.dddddº); UTM/UPS coordinates; or British,

German, Irish, Maidenhead, Swedish, Swiss, or Taiwan,

or User grid formats.

The position format may

be set to display your

choice of many formats.

Note: degree and minutes

is the default setting.

To select a position format:

^{1. Highlight the ‘position format’ field, and press}F^.

^{Select the desired setting, and press}F^.

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REFERENCE

User Grid Option

The user grid option lets you create a user-defined

position format by establishing factors such as longitude

of origin, scale, and false Easting or Northing.

Datums, CDI

Settings, &

Measurement

To define a user grid:

^{1. Select ‘User Grid’, and press}F^{. Enter values for}

longitude origin, scale, false Easting and Northing,

^{then press}F^{. Highlight ‘SAVE?’, and press}F^.

Map Datums

The ‘datum’ field is located just below the ‘position’

field and comes with a WGS 84 default setting.

Although 106 total map datums are available for use

(see Appendix D for map datums), you should only

change the datum if you are using maps or charts that

specify a different datum than WGS 84.

To select a map datum:

^{1. Highlight the ‘datum’ field, and press}F^.

The default map datum

will cover worldwide nav-

igation. However, if you

are using a paper map or

chart which uses a differ-

ent map datum than WGS

84, then you may wish to

switch to that datum.

^{2. Select the desired setting, and press}F^.

To define a user datum:

^{1. Highlight the ‘datum’ field, and press}F^.

2. Scroll through the map datum options until ‘User’

^{appears, and press}F^.

3. Enter values for ‘DX’, ‘DY’, ‘DZ’, ‘DA’, and ‘DF’ using the

^{rocker keypad, and press}F^.

^{4. Highlight ‘SAVE?’, and press}F^{. The setup menu}

will reappear.

CDI Scale Settings

The course deviation indicator (CDI) field lets you

select the +/- range of the CDI bar scale on the Highway

Page. Three scales are available: +/- 0.25 (default), 1.25,

and 5.0 miles or kilometers. Note: This CDI value rep-

resents the full deflection of scale to either side.

To enter a CDI scale setting:

^{1. Highlight the ‘cdi scale’ field, and press}F^.

^{2. Select the desired setting, and press}F^.

Units of Measure

The user datum feature

allows you to define the

earth model used to calcu-

late position coordinates.

WARNING: Incorrect

entries may result in sub-

stantial position errors.

The GPS 126/128 lets you select statute (default),

nautical, or metric units of measure for all ‘speed’ and

‘distance’ fields.

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REFERENCE

To change the unit of measure:

^{1. Highlight the ‘units’ field, and press}F^.

^{2. Select the desired unit of measure, and press}F^.

Speed Filter and

Magnetic

Speed Filter

Heading

The speed filter allows you to determine how the

GPS 126/128 responds to changes in track or ground

speed. Three settings are available: automatic, on, or

off. The ‘Auto’ setting is the default and will monitor

changes in your current track and speed and adjust the

receiver’s response time automatically. The ‘On’ setting

allows you to manually enter a response time up to

300 seconds. Selecting a higher setting may be desir-

able in slow-speed applications with frequent changes

in track.

To enter a value for the speed filter:

^{1. Highlight the ‘SPEED FILTER’ field and press}F^.

^{2. Select the ‘ON’ option and press}F^.

The number entered repre-

sents a window of time the

GPS 126/128 considers in

adjusting to changes in

speed and track. For exam-

ple, if 12 seconds is entered,

the speed displayed will

constantly represent the

speed averaged over the last

12 seconds.

^{3. Highlight the “speed value” field and press the}F

key.

4. Use

_secoU_nds.

and

to select the desired number of

^{5. Press the}F ^{key to confirm the selection.}

Magnetic Heading Reference

The GPS 126/128’s heading information can be dis-

played referencing magnetic north (automatic or user-

defined), true north, or calculated grid headings. The

default setting is automatic magnetic north, which is

suitable for most applications.

To select a heading reference:

^{1. Highlight the ‘heading’ field, and press}F^.

2. Select the desired heading preference, and press

F^.

To enter a user-defined

magnetic variation, select

the ‘User Mag’ option and

enter the desired direction

and value.

To enter a user-defined magnetic heading:

^{1. Select ‘User Mag’ and press}F^.

^{2. Press}F^{, enter the degrees and direction of mag-}

^{netic variation, then press}F^.

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REFERENCE

Alarms Setup

The alarms setup page is used to set the three

alarms available on the GPS 126/128: the anchor drag

alarm, arrival alarm, and CDI alarm.

Alarms Setup

The anchor drag alarm will sound if your boat has

moved outside a range measured from a central point

(your position). The arrival alarm sounds when you are

approaching a waypoint and have reached the user

defined distance. The CDI alarm will alert you when

your track varies from the shortest distance to a way-

point by the defined range.

The arrival and CDI alarms may be set from 0.0 to

9.9 units. The anchor drag alarm may be set up to 9.99

distance units.

To set the alarms:

1. Move the highlight to ‘ALARMS SETUP’ and press

F^.

When activated, the arrival

alarm will sound when you

reach the specified distance

from your destination

waypoint.

2. Select the desired alarm distance field and press

F^.

^{3. Enter the distance for the alarm and press}F^.

4. If you would like to change the ‘On/Off’ setting, press

the

key and use the

and

keys to turn

the alarm on or off.

^{5. Enter a setting and press the}F ^key.

When setting the anchor drag alarm, remember

that Selective Availability can degrade your

GPS position as much as 100 meters and may

cause false anchor drag alerts.

Use the CDI alarm to

ensure you maintain

straight-line course to the

destination waypoint.

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REFERENCE

Navigation Simulator

The GPS 126/128’s simulator mode lets you prac-

tice all aspects of its operation without active satellite

acquisition. You can plan and practice trips, enter new

waypoints and routes, and save them for use during

normal operation.

Navigation

Simulator

To activate the simulator:

1. From the Menu Page, highlight ‘SYSTEM SETUP’, and

^pressF^.

^{2. Highlight the ‘mode’ field, and press}F^.

^{3. Select ‘Simulator?’, and press}F^.

Once the simulator mode has been activated, use

the Position, Compass, or Highway Page to set your

speed and track by highlighting the appropriate field,

^{entering the desired value, and pressing}F^{. You may}

also enter a new position if you desire (from the

Position Page).

Select the simulator mode

from the operation mode

choices and press ENTER.

You may return to normal

operation by changing the

operation mode or by

turning the unit off.

The GPS 126/128 does not track satellites in

simulator mode. Although you can create and

save waypoints and routes while using the

simulator mode, never attempt to use the simu-

lator mode for actual navigation.

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APPENDIX A

Initializing for First-Time Use

The GPS 126/128 typically acquires a position so

fast that initialization is automatic. However, initializa-

tion will be necessary for the following:

Initialization

• After memory loss

• When the receiver has been moved more than

500 miles with the power off

Additionally, it may be necessary to initialize the

unit the first time you use it, if it does not acquire a fix

in a few minutes.

The receiver is shipped from the factory in

AutoLocate™ mode, which enables the GPS 126/128 to

determine its location anywhere in the world. To speed

up the initialization process, we recommend using the

graphic initialization described below.

To turn the GPS 126/128 on:

^{1. Press and hold}P ^{until the receiver turns on.}

Welcome Page

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 Satellite 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 126/128’s internal data-

base. This may speed up the initialization process.

•Autolocate^TM––allows the GPS 126/128 to initial-

ize itself and calculate a position fix without know-

ing your present position. This usually provides a

position fix in 3-5 minutes.

If the EZinit prompt has not automatically

appeared on the Satellite Page:

The EZinit prompt will

automatically appear if

the receiver needs to be

initialized. The prompt

may also appear during

normal use if the antenna

is shaded.

^{1. Press the}F ^key.

Note: If the EZinit prompt ever appears after you

have initialized the receiver (due to the antennas view

of satellites being obstructed by trees, etc.), highlight

the ‘no re-init’ selection with the arrow keypad and

^pressF^.

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APPENDIX A

To initialize the receiver:

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

key repeatedly to move the field highlight to the

‘COUNTRY’ option.

Initialization

^{2. Press the}F ^key.

3. Use the

key to scroll through the list options until

the country of your present position appears.

4. Use the key to highlight the country/state/region

you’re in. If the country you’re in is not listed, select

another country within 500 miles of your present

position.

^{5. Press}F ^{to finish.}

The GPS 126/128 will now begin searching for the

appropriate satellites for your location and should

acquire a position within 3-5 minutes. You can verify

that you have acquired a position by watching the

Satellite Page transition to the Position Page (provided

you haven’t pressed any other buttons) or by looking

for a ‘2D NAV’ or ‘3D NAV’ status at the top-left corner

of the Satellite Page.

Use the arrow keypad to

highlight the country,

region, or state of your

present position from the

list and press ENTER. If

the country is not listed,

select the closest country

instead.

Initialization Troubleshooting

If you have trouble initializing the receiver or

acquiring a position, check the following:

• Does the unit have a clear view of the sky?

If there are large buildings or mountains nearby, or

if there is heavy tree cover, the receiver may not be

receiving enough satellite signals to calculate a

position.

• Have you selected the right country/state/region

from the EZinit list?

Check for the correct approximate lat/lon on the

Position Page, or reselect the appropriate country

from the list to restart the initialization.

• Have you moved more than 500 miles from the

last calculated position with the receiver off?

Reinitialize the receiver, selecting the country/state/

region of your new location from the EZinit list.

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APPENDIX B

Mounting the GPS 126

The GARMIN GPS 126 should be mounted in an

exposed location with an unobstructed view of the sky.

The unit comes with a gimbal bracket that can be used

to surface mount the unit. When choosing a location

for the display unit, make sure you consider the follow-

ing conditions:

Installation

• There should be at least 2” (5 cm) clearance

behind the case to allow connection of the

power/data cable.

• The mounting surface should be rigid enough to

support the unit and protect it from excessive

vibration and shock.

• The built in antenna has an unobstructed view of

the sky.

To surface mount the GPS 126:

1. Place the mounting bracket in the desired location.

2. Mark and drill the four mounting holes for the fasten-

ers you are using (not included).

3. Fasten the bracket to the surface using the appropri-

ate fasteners.

4. Insert the GPS 126 into the mounting bracket.

5. Screw the two mounting knobs through the bracket

and into the GPS 126.

6. Connect the power/data cable to the back of the unit,

making sure the locking ring is engaged.

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APPENDIX B

Mounting the GPS 128

The GPS128’s compact case is suitable for mounting

in exposed locations or at the nav station. The unit

comes with a gimbal mount that can be used for sur-

face, overhead, or flush mounting the unit. When

choosing a location for the display unit, make sure you

consider the following conditions:

Installation

• There should be at least 2” (5 cm) clearance

behind the case to allow connection of the

power/data cable.

• The mounting surface should be rigid enough to

support the unit and protect it from excessive

vibration and shock.

To surface mount the GPS 128:

1. Place the mounting bracket in the desired location.

2. Mark and drill the four mounting holes for the fasten-

ers you are using (not included).

3. Fasten the bracket to the surface using the appropri-

ate fasteners.

4. Insert the GPS 128 into the mounting bracket.

5. Screw the two mounting knobs through the bracket

and into the GPS 128.

6. Connect the power/data cable and antenna to the

back of the unit, making sure the locking rings are

engaged.

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Appendix b

To flush mount the GPS 128:

Installation

The GPS 126/128 can be mounted flush with a flat

panel of .08-.52” thickness using the cam lobe feature

on its mounting bracket.

1. Cut a 4.15” W x 4.67” H hole in panel.

2. Place GPS 128 into hole from the front until its flange

rests against the mounting surface.

3. From the back side of the panel, loosely attach the

bracket such that the slot in the ratchet area points

away from the mounting panel.

4. Rotate the bracket downward until the panel

is pinched tightly between the units flange

and bracket lobe.

5. Tighten knobs and connect the power/data

and antenna cables. Note: If the panel is too thick to

allow use of the supplied knobs, use two M6 screws to

secure the bracket.

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Appendix b

Mounting the GPS 128 antenna

The antenna should be mounted in a location that has

a clear, unobstructed view of the sky in all directions to

ensure the best reception. Avoid mounting the antenna

where it will be shaded by the boats superstructure, a

radome antenna, or mast. Sailboat users should avoid

mounting the antenna high on the mast to prevent inac-

curate speed readings caused by excessive heeling. Most

marine VHF and loran antennas will not seriously

degrade the GPS antennas reception. Never paint the

antenna or clean it with harsh solvents.

Installation

The GARMIN antenna screws directly onto any stan-

dard 1” x 14-thread antenna mount. If you need to raise

the antenna to avoid shading, try using a 1” x 14-thread

extension mast available at most marine dealers.

To install the GPS antenna:

BEST

GOOD

BETTER

1. Screw the antenna directly onto the 1” x 14-thread

mount.

2. Route the cable to the mounting location of the

display unit. Use the appropriate tie-wraps,

escutcheon plates and sealant to secure the cable

along the route and through any bulkhead or deck.

3. Once the GPS 128 has been installed, connect the

cable to the antenna connector on the back of the

display unit. Make sure that you turn the antenna

cable connector 1/4 turn clockwise to lock the

cable into place.

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APPENDIX C

The GPS 126/128 is constructed of high quality

materials and should not require user maintenance. Should your

unit ever need repair, please take it to an authorized GARMIN ser-

vice center or contact the GARMIN customer service department.

The GPS 126/128 has no user serviceable parts. Never attempt

any repairs yourself.

Specifications &

Wiring

To protect your GPS, never allow gasoline or other solvents to

come in contact with the case or screen. Clean the case and screen

with a soft cloth and a household window cleaner.

PHYSICAL

Case:

Waterproof*

Size:

4.9”H x 5.3”W x 2.4”D

(15.6 x 5.1 x 1.23 cm)

Weight: Less than 1 lb. (454g)

Temperature Range: 5º to 158ºF (-15º to 70ºC)

PERFORMANCE

Receiver:

12 Parallel-Channel

Acquisition Time:

Approx. 15 seconds (warm)

Approx. 45 seconds (cold)

Approx. 5 minutes (AutoLocate)

1/second, continuous

Update Rate:

Position Accuracy: 1-5 meters (3-17 ft.) with DGPS corrections**

15 meters (49 ft.) RMS***

Velocity Accuracy:

Dynamics:

0.1 knot RMS steady state

Performs specification to 6g’s

POWER

Input:

Usage:

10-40v DC

2 watts

Specifications subject to change without notice

Meets IEC (European Community Specification) 529 IPX7 for protection against immer-

sion for 30 minutes at a depth of 1 meter.

** With optional GARMIN GBR 21 Beacon Receiver Input.

***Subject to accuracy degradation to 100m 2DRMS under the U.S. DOD-imposed Selective

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Availability Program.

APPENDIX C

Connecting the power/data cable

The power/data cable connects the GPS 126/128 sys-

tem to a 10-40 volt DC power source and provides inter-

face capabilities for connecting NMEA devices and an

external alarm The diagram below indicates the appropri-

ate harness connections.

Specifications &

Wiring

To connect the GPS 126/128 to a power source:

1. Connect the RED harness lead to the positive side of a 10-40 volt DC power source. Make sure

the power lead has an in-line 1-amp fuse installed.

2. Connect the BLACK harness lead to a ground strip or the negative side of a

10-40 volt DC power source.

PIN 1 (red): 10-40 volts DC

PIN 2 (black): Ground

(-)

(+)

PIN 3 (blue): NMEA out

10-40 volts DC

PIN 4 (brown): NMEA in

Shield Grounded

Through GPS

PIN 5 (white): No connection

PIN 6 (green): No connection

PIN 7 (yellow): alarm low

Pin assignment

Autopilot/

NMEA Device

GBR 21

Beacon

Receiver

(-)

Alarm/

Relay

(+)

To connect an external alarm, connect the ground side of the alarm device to the

YELLOW harness lead. (100 mA DC load max.) The following interface formats are sup-

ported by the GPS 126/128 for driving three NMEA devices:

NMEA 0180, NMEA 0182,

NMEA 0183 version 1.5:

Approved sentences:

NMEA 0183 version 2.0:

Approved sentences:

GPGGA, GPGLL, GPGSA, GPGSV,

GPRMB, GPRMC, GPRTE, GPWPL, GPBOD

GPBWC, GPGLL, GPRMB, GPRMC, GPXTE,

GPVTG, GPWPL, GPBOD

Proprietary sentences:

PGRME (estimated error), PGRMM (map

datum), PGRMZ (altitude), PSLIB (beacon

receiver control)

PGRMM (map datum), PGRMZ

(altitude), PSLIB (beacon rec. control)

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APPENDIX D

The GPS 126/128 uses a flashing on-screen message

indicator to alert you to important information. Whenever

the message indicator appears, press PAGE to view the

message page. There are two types of messages: temporary

alerts and condition alerts. Temporary alerts are cleared

from the message page after viewing, while condition

alerts remain until the condition has been resolved. Pay

careful attention to all messages for your own safety.

Messages &

Time Offsets

Active WPT Can’t be Deleted—You have attempted to change the “active to” or

“active from” waypoint. Clear the active route or GOTO before making your changes.

Accuracy has been Degraded—The accuracy of the GPS 126/128 has been degraded

beyond 500 meters due to poor satellite geometry or data quality. You should check

other navigational sources to verify the position indicated.

Already Exists—The name you are entering already exists in the GPS 126/128’s mem-

ory.

Approaching—You are one minute away from reaching a destination waypoint.

No DGPS Position—Not enough data is available to compute a DGPS position.

No RTCM Input—Beacon receiver is improperly connected or baud rates do not match.

Poor GPS Coverage—The GPS 126/128 cannot acquire the necessary number of

satellites to compute a position. Try another location with a clearer view of the sky.

Power Down and Re-init—The GPS 126/128 is not able to calculate a position due

to abnormal satellite conditions. Turn the unit off and verify the last position shown by

other means. Try the unit again later, possibly in a different location.

Read Only Mem has Failed—The permanent memory has failed and the unit is not

operable.

Received an Invalid WPT—A waypoint was received during upload transfer that has

an invalid identifier.

Receiver has Failed—A failure in receiver hardware has been detected. If this mes-

sage persists, do not use the unit and take it to an authorized dealer for repair.

Route is Full—You have attempted to add more than 30 waypoints to a route.

Route is not Empty—You have attempted to copy into a route already in use.

Route Waypoint Can’t be Deleted—The waypoint you are trying to delete is part of

a route. Delete the waypoint from the route before removing it from memory.

Route Waypoint was Deleted—A route waypoint entered does not exist in the data-

base and has been deleted from the route.

RTCM Input has Failed—DGPS data being received has been lost. You are no longer

receiving the beacon signal.

Searching the Sky—The GPS 126/128 is in searching the sky for almanac data or the

unit is in AutoLocate mode.

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APPENDIX D

Messages &

Time Offsets

Stored Data was Lost—All waypoints, routes, time and almanac data has been lost

due to internal battery failure or clearing the receiver’s memory.

Transfer has been Completed—The receiver is finished uploading or downloading

information to the connected device.

WPT Memory is Full—You have used all 500 waypoints in the GPS 126/128. Delete

unwanted waypoints to make room for new entries.

Time Offset Chart

The table below gives approximate UTC time offset for various longitudi-

nal zones. If you are in daylight savings time, add one hour to the offset.

Longitudinal Zone

W180.0º to W172.5º

W172.5º to W157.5º

W157.5º to W142.5º

W142.5º to W127.5º

W127.5º to W112.5º

W112.5º to W097.5º

W097.5º to W082.5º

W082.5º to W067.5º

W067.5º to W052.5º

W052.5º to W037.5º

W037.5º to W022.5º

W022.5º to W007.5º

W007.5º to E007.5º

Offset

-12

-11

-10

-9

Longitudinal Zone

E007.5º to E022.5º

E022.5º to E037.5º

E037.5º to E052.5º

E052.5º to E067.5º

E067.5º to E082.5º

E082.5º to E097.5º

E097.5º to E112.5º

E112.5º to E127.5º

E127.5º to E142.5º

E142.5º to E157.5º

E157.5º to E172.5º

E172.5º to E180.0º

Offset

-8

-7

-6

-5

-4

-3

-2

-1

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APPENDIX E

The following list shows the map datums available for

the GPS 126/128 Menu page abbreviations are listed first,

followed by the corresponding map datum name and area.

The default map datum for the GPS 126/128 is WGS 84.

Map Datums

Adindan

Adindan- Ethiopia, Mali,

Senegal, Sudan

(New Georgia Islands)

Easter Island 1967

Easter Isld 67

European 1950

Afgooye

Afgooye- Somalia

European 1950- Austria,

Belgium, Denmark, Finland,

France, Germany, Gibraltar,

Greece, Italy, Luxembourg,

Netherlands, Norway,

Portugal, Spain, Sweden,

Switzerland

AIN EL ABD ‘70

AIN EL ANBD 1970- Bahrain

Island, Saudi Arabia

Anna 1 Ast ‘65

ARC 1950

Anna 1 Astro ‘65- Cocos Isl.

ARC 1950- Botswana,

Lesotho, Malawi, Swaziland,

Zaire, Zambia, Zimbabwe

European 1979

European 1979- Austria,

Finland, Netherlands,

Norway, Spain, Sweden,

Switzerland

ARC 1960

ARC 1960- Kenya, Tanzania

Ascnsn Isld ‘58

Ascension Island ‘58-

Ascension Island

Astro B4 Sorol

Astro B4 Sorol Atoll- Tern

Island

Finland Hayfrd

Gandajika Base

Finland Hayford- Finland

Gandajika Base- Republic of

Maldives

Astro Bcn “E”

Astro Dos 71/4

Astr Stn ‘52

Astro Beacon “E”- Iwo Jima

Astro Dos 71/4- St. Helena

Geod Datm ‘49

Geodetic Datum ‘49-

New Zealand

Astronomic Stn ‘52- Marcus

Island

Guam 1963

Gux 1 Astro

Guam 1963- Guam Island

Astrln Geod ‘66

Astrln Geod ‘84

Australian Geod ‘66-

Australia, Tasmania Island

Gux 1 Astro- Guadalcanal

Island

Australian Geod ‘84-

Hjorsey 1955

Hong Kong ‘63

Hu-Tzu-Shan

Indian Bngldsh

Hjorsey 1955- Iceland

Hong Kong ‘63- Hong Kong

Taiwan

Australia, Tasmania Island

Austria

Bellevue (IGN)

Bermuda 1957

Efate and Erromango Islands

Indian- Bangladesh, India,

Nepal

Bermuda 1957- Bermuda

Islands

Indian Thailand

Indonesia ‘74

Ireland 1965

Indian- Thailand, Vietnam

Indonesia 1974- Indonesia

Ireland 1965- Ireland

Bogata Observ

Campo Inchspe

Canton Ast ‘66

Bogata Obsrvatry- Colombia

Campo Inchauspe- Argentina

Canton Astro 1966- Phoenix

Islands

ISTS 073 Astro

ISTS 073 ASTRO ‘69-

Diego Garcia

Cape

Cape- South Africa

Johnston Island

Kerguelen Islnd

Kertau 1948

Johnston Island Kandawala

Kandawala- Sri Lanka

Cape Canavrl

Cape Canaveral- Florida,

Bahama Islands

Kerguelen Island, Kandawala,

Sri Lanka

Carthage

Carthage- Tunisia

CH-1903

CH 1903- Switzerland

Kertau 1948- West Malaysia,

Singapore

Chatham 1971

Chatham 1971- Chatham

Island (New Zealand)

L. C. 5 Astro

Cayman Brac Island

Liberia 1964- Liberia

Luzon- Mindanao Island

Chua Astro

Corrego Alegr

Djakarta

Chua Astro- Paraguay

Corrego Alegre- Brazil

Liberia 1964

Luzon Mindanao

Luzon Philippine

Djakarta (Batavia)- Sumatra

Island (Indonesia)

Luzon- Philippines

(excluding Mindanao Island)

Dos 1968

Dos 1968- Gizo Island

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APPENDIX E

Mahe 1971

Marco Astro

Massawa

Mahe 1971- Mahe Island

Marco Astro- Salvage Island

Massawa- Eritrea (Ethiopia)

Merchich- Morocco

Merchich

Map Datums

Midway Ast ‘61

Minna

Midway Astro ‘61- Midway

Minna- Nigeria

NAD27 Alaska

North American 1927- Alaska

NAD27 Bahamas North American 1927-

Bahamas (excluding San

Salvador Island)

Prov S Am ‘56

Prov So Amricn ‘56- Bolivia,

Chile,Colombia, Ecuador,

Guyana, Peru, Venezuela

NAD27 Canada

North American 1927-

Canada and Newfoundland

NAD27 Canal Zone North Am. 1927- Canal Zone

Prov S Chln ‘63

Puerto Rico

Qatar National

Qornoq

Prov So Chilean ‘63- S. Chile

Puerto Rico & Virgin Islands

Qatar National- Qatar

NAD27 Caribbn

North American 1927-

Caribbean (Barbados, Caicos

Islands, Cuba, Dom. Rep.,

Grand Cayman, Jamaica,

Leeward and Turks Islands)

Qornoq- South Greenland

Reunion- Mascarene Island

Rome 1940- Sardinia Island

Sweden

Reunion

Rome 1940

RT 90

NAD27 Central

North American 1927-

Central America (Belize, Costa

Rica, El Salvador, Guatemala,

Honduras, Nicaragua)

Santo (Dos)

Santo (Dos)- Espirito Santo

Island

Sao Braz

Sao Braz- Sao Miguel, Santa

Maria Islands (Azores)

NAD27 CONUS

NAD27 Cuba

North Am. 1927- Mean Value

North American 1927- Cuba

Sapper Hill ‘43

Sapper Hill 1943- East

Falkland Island

NAD27 Grnland

North American 1927-

Greenland (Hayes Peninsula)

Schwarzeck

Schwarzeck- Namibia

NAD27 Mexico

NAD27 San Sal

N. American 1927- Mexico

Sth Amrcn ‘69

South American ‘69-

Argentina, Bolivia, Brazil,

Chile, Colombia, Ecuador,

Guyana, Paraguay, Peru,

Venezuela, Trinidad and

Tobago

North American 1927- San

Salvador Island

NAD83

North American 1983- Alaska,

Canada, Central America,

CONUS, Mexico

Nhrwn Masirah

Nahrwn- Masirah Island

(Oman)

South Asia

SE Base

South Asia- Singapore

Southeast Base- Porto Santo

and Madiera Islands

Nhrwn Saudi A

Nhrwn United A

Nahrwn- Saudi Arabia

Nahrwn- United Arab

Emirates

SW Base

Southwest Base- Faial,

Graciosa, Pico, Sao Jorge and

Terceira Islands (Azores)

Naparima BWI

Obsrvtorio ‘66

Naparima BWI- Trinidad and

Tobago

Timbalai 1948

Timbalai 1948- Brunei and E.

Malaysia (Sarawak and Sabah)

Observatorio 1966- Corvo

and Flores Islands (Azores)

Tokyo

Tokyo- Japan, Korea, Okinawa

Old Egyptian

Old Hawaiian

Oman

Old Egyptian- Egypt

Old Hawaiian- Mean Value

Oman- Oman

Tristan Ast ‘68

Tristan Astro 1968- Tristan da

Cunha

Viti Levu 1916

Viti Levu 1916- Viti Levu/ Fiji

Islands

Ord Srvy GB

Old Survey Grt Britn-

England, Isle of Man,

Scotland, Shetland Isl., Wales

Wake-Eniwetok

WGS 72

Wake-Eniwetok- Marshall Isl.

World Geodetic System 1972

World Geodetic System 1984

Zanderij- Surinam

Pico De Las Nv

Potsdam

Canary Islands

WGS 84

Potsdam-Germany

Zanderij

Ptcairn Ast ‘67

Pitcairn Astro ‘67- Pitcairn Is

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APPENDIX F

Index

Deleting Waypoints . . . . .24

Distance/Sun Calculations 43

Activating a Route . . . . . .30

Active Route Page . . . . . .31

Altitude (ALT) . . . . . . . . . . . . .18

Antenna Installation . . . . .57

AutoLocate™ Mode . . . . .52

Average Speed (AVSPD) . .17

EPE . . . . . . . . . . . . . . . . .15

EZinit . . . . . . . . . . . .16, 52

Editing Routes . . . . . . . . .32

Elapsed Time (ELPSD) . . .17

Emergency Erase . . . . . . .16

Est. Time Enroute (ETE) .34

Est. Time of Arrival (ETA) 34

European Community Spec58

Backlighting . . . . . . . . . . 15, 47

Beacon Receiver Setup 44, 45

Bearing . . . . . . . . . . . . .2, 4

CDI . . . . . . . . . . . . . . . . .35

Cancelling a GOTO . . . . .25

Cautions . . . . . . . . . . . . . .iii

Clearing Routes . . . . . . . .30

Clearing the Track Log 13, 42

Clock . . . . . . . . . . . . . . . . . . .46

Compass Page 12, 33, 34, 36

Configuring the Map Page 40

Contrast . . . . . . . . . .13, 47

Copying Routes . . . . . . . .31

Course deviation indicator 35

Course to Steer (CTS) . . .34

Creating Routes . . . . . . . .30

Crosstrack Error (XTK) . .34

GOTO . . . . . . . . . . . . . . .25

Getting Started Tour . . . . .11

Going To a Waypoint . . . . . . . .11

Graphic steering . . . . . . .33

Highway Page . . . .11, 33, 34, 35

Heading . . . . . . . . . . . . .49

I/O format . . . . . . . . . . . .44

Initializing . . . . . . . . . . . .52

Interface Setup . . . . . . . . .44

Inverting a Route . . . . . . .30

DGPS Interface . . . . . . . .45

Date and Time . . . . . . . . .46

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APPENDIX F

Index

Magnetic Heading . . . . . .49

Man Overboard . . . . . . . .25

Map Cursor . . . . . . . . . . .37

Map Datums . . . . . . .48, 62

Map Orientation . . . .40, 41

Map Page . . . . . . . . . 10, 37

Map Setup . . . . . . . . . . . .40

Marking a Position . . . .8, 18

Maximum Speed (MXSPD)17

Menu Page . . . . . . . . . .7, 43

Memory Erase . . . . . . . . . . . . .16

Messages . . . . . . . . . . 60, 61

Receiver Status . . . . . . . . .15

Reference Waypoints . . . .22

Renaming Waypoints . . . .24

Repairs . . . . . . . . . . . . . . . . . .58

Route Definition Page . . . .29

Route Navigation . . . . . . .28

Satellite Page . . . . . . . .6, 14

Scanning Waypoints . . . . .24

Screen Backlighting . .15, 47

Screen Contrast . . . . .13, 47

Signal Strength Bars . . . . .14

Simulator . . . . . . . . . . . . .51

Sky View . . . . . . . . . . . . .14

Specifications . . . . . . . . . .58

Symbols . . . . . . . . . . .23, 39

System Setup . . . . . . . . . .46

NMEA . . . . . . . . . . . . . . . . . . 59

Navigating Routes . . . . . .28

Navigation Basics . . . . . . . .4

Navigation Pages . . . . .7, 33

Navigation Setup . . . . . . .47

Nearest Waypoints . . . . . .20

Time Format . . . . . . . . . .46

Time Offset . . . . . . . . . . .46

TracBack Navigation . . . . .26

TracBack Tips . . . . . . .26, 27

Track Log Display . . . . . .42

Track Method . . . . . . . . .42

Track Setup Page . . . . . . .40

Trip Timer (TTIME) . . . . .17

Troubleshooting . . . . . . . .53

Turn (TRN) . . . . . . . . . . .34

Trip odometer . . . . . . . . .17

On-Route GOTO . . . . . . .32

Operating modes . . . . . . .46

Panning . . . . . . . . . . . . . .38

Position Accuracy . . . . . .50

Position Averaging . . . . . .19

Position Formats . . . . . . .47

Position Page . . . . . . . .6, 16

Primary Pages . . . . . . . . . .6

Proximity Waypoints . . . .21

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APPENDIX f

Index

Units of Measure . . . . . . .48

User-defined route . . . . . .30

User Grid . . . . . . . . . . . .48

Using the Keypad . . . . . . .5

Using the Position Page . . .9

Velocity Made Good (VMG) 3

Warranty . . . . . . . . . . . . .67

Waypoint Comments . . . .23

Waypoint Definition . . . . .22

Waypoint List . . . . . . . . . 20

Waypoint Pages . . . . . . . .19

Waypoint Symbols . . 23, 39

Web Site Address . . . . . . . .i

Zooming . . . . . . . . . . . . .40

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LIMITED WARRANTY

GARMIN International warrants this product to be free from

defects in materials and workmanship for one year from the date of

purchase. GARMIN will at its sole option, repair or replace any com-

ponents which fail in normal use. Such repairs or replacement will

be made at no charge to the customer for parts or labor. The cus-

tomer is, however, responsible for any transportation costs. This war-

ranty does not cover failures due to abuse, misuse, accident or unau-

thorized alteration or repairs. GARMIN assumes no responsibility for

special, incidental, punitive or consequential damages, or loss of use.

The warranties and remedies contained herein are exclusive and

in lieu of all other warranties expressed or implied, including any lia-

bility arising under warranty of merchantability or fitness for a par-

ticular purpose, statutory or otherwise. This warranty gives you spe-

cific legal rights, which may vary from state to state.

To obtain warranty service, call the GARMIN Customer Service

department (913-397-8200) for a returned merchandise tracking

number. The unit should be securely packaged with the tracking

number clearly marked on the outside of the package, and sent

freight prepaid and insured to a GARMIN warranty service station. A

copy of the original sales receipt is required as the proof of purchase

for warranty repairs. GARMIN retains the exclusive right to repair or

replace the unit or software at its sole discretion.

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NOTES

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1200 E. 151st Street, Olathe, KS USA 66062

GARMIN (Europe) Ltd. - Unit 5, The Quadrangle,

Abbey Park, Romsey, UK SO51 9AQ

GARMIN (Asia) Corp., 4th Fl., No. 1, Lane 45,

Pao-Hsing Road, Hsin Tein, Taiwan R.O.C.

Part Number 190-00151-00 Rev. A Printed in Taiwan

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