Garmin GPSMAP 180 User Manual

GPSMAP

180

OWNERS MANUAL

AND REFERENCE

© 1999 GARMIN Corproation

Garmin International, Inc., 1200 E. 151st Street, Olathe, KS 66062 USA
Tel: [phone] FAX: [phone]

Garmin (Europe) Ltd., Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey SO51 9AQ UK
Tel: [phone] FAX: [phone]

Garmin (Asia) Corp., 3F, No. 1, Lane 45, Pao Hsing Road, Hsin Tien, Taipei, Taiwan R.O.C.
Tel: [phone]-4107 FAX: [phone]-1758

i

INTRODUCTION

Foreword

GARMINTM, Micro G-chartTM, AutoLocateTM,
TracBack

TM

and PhaseTrac12TMare trademarks
of GARMIN Corporation and may only be used
with permission. All rights are reserved.

Software Version 4.02 or above

Internal Database Version 3.00
Micro G-chart

TM

cartridge data is copyrighted by Navionics Corporation and
GARMIN Corporation and may not be copied or used for any other purpose with­out permission.

© Copyright 1999

GARMIN Corporation

All Rights Reserved

Except as expressly provided herein, no part of this manual may be reproduced,
copied, transmitted, disseminated, downloaded or stored in any storage medium,
for any purpose without the express prior written consent of GARMIN
Corporation. GARMIN Corporation hereby grants permission to download a sin­gle copy of this manual and of any revision to this manual onto a hard drive or
other electronic storage medium to be viewed and to print one copy of this manu­al or of any revision hereto, provided that such electronic or printed copy of this
manual or revision must contain the complete text of this copyright notice and
provided further that any unauthorized commercial distribution of this manual or
any revision hereto is strictly prohibited.

Information in this document is subject to change without notice. GARMIN
reserves the right to change or improve its products and to make changes in the
content without obligation to notify any person or organization of such changes
or improvements.

March 1999 Part #190-00157-10 Rev. A Printed in Taiwan.

The GPS system is operated by the United States government, 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 GARMIN GPSMAP 180 is a precision electronic NAVigation AID (NAVAID), any
NAVAID can be misused or misinterpreted and, therefore, become unsafe.

Use the GPSMAP 180 at your own risk. To reduce the risk of unsafe operation,
carefully review and understand all aspects of this Owners Manualand thoroughly
practice operation using the simulator mode prior to actual use. When in actual use,
carefully compare indications from the GPSMAP 180 to all available navigation
sources, including the information from other NAVAIDs, visual sightings, charts, etc.
For safety, always resolve any discrepancies before continuing navigation.

NOTE: This equipment generates, uses, and can radiate radio frequency energy
and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interfer­ence will not occur in a particular installation. If this equipment does cause harmful
interference, the user is encouraged to try to correct the interference by relocating
the equipment or connecting the equipment to a different circuit. Consult an autho­rized dealer or other qualified technician for additional help if these remedies do not
correct the problem.

This device complies with Part 15 of the FCC limits for class B digital devices for
home or office use. Operation is subject to the following conditions: (1) This device
may not cause harmful interference, and (2) this device must accept any interference
received, including interference that may cause undesired operation.

The GPSMAP180 contains no 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.

ii

INTRODUCTION

Cautions

CAUTION!

The GARMIN GPSMAP 180 has no user-ser­viceable parts. Should you ever encounter a
problem with your unit, please take it to an
authorized GARMIN dealer for repairs.

iii

INTRODUCTION

Capabilities

Designed for detailed electronic charting and simple operation, the GARMIN
GPSMAP 180 is a powerful navigation device that can help guide you in water­ways around the world:

Precision Performance

 160 x 240 pixel High-contrast 4-level gray LCD screen

 PhaseTrac12

TM

receiver tracks and uses up to 12 satellites simultaneously

for fast, accurate positioning

 Differential-Ready just add the optional GBR 21 beacon receiver for better

than 10-meter accuracy

 Gasketed case for use in exposed locations
Advanced Navigating and Plotting

 250 alphanumeric waypoints with selectable icons and comments

 Built-in worldwide database usable from 4096 to 64 nm scales

 20 reversible routes with up to 30 waypoints each

 Micro G-chart

TM

electronic charting with inland and offshore coverage
 On-screen point-to-point distance and bearing calculations
 TracBack

TM

route feature which allows you to quickly retrace your track log to

a starting position

 Built-in simulator mode

LIMITED WARRANTY

GARMIN warrants this product to be free from defects in materials and work­manship for one year from the date of purchase. GARMIN International, Inc. will at
its sole option, repair or replace any components which fail in normal use. Such
repairs or replacement will be made at no charge to the customer for parts or labor.
The customer is, however, responsible for any transportation costs. This warranty
does not cover failures due to abuse, misuse, accident, or unauthorized alteration or
repairs. GARMIN International, Inc. 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 liability arising under warranty
of merchantability or fitness for a particular purpose, statutory or otherwise. This
warranty gives you specific legal rights, which may vary from state to state.

To obtain warranty service, contact the GARMIN Customer Service department
at 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.

iv

INTRODUCTION

Warranty

v

INTRODUCTION

Preface

Congratulations on choosing one of the most advanced marine navigation sys­tems available! The GARMIN GPSMAP 180 combines the proven performance of
GARMIN GPS with powerful Micro G-Chart electronic charting for detailed car­tography and plotting wherever you cruise.

To get the most out of your new navigation system, take the time to go through
this operators manual and learn the operating procedures for your unit. This
manual is broken down into two sections for your convenience.

Getting Started introduces you to the GPSMAP 180 and provides a tutorial that
will help you become more familiar with the unit. This part will provide you with
a basic working knowledge necessary to use the unit to its fullest
potential.

The Reference portion is divided into sections that provide detailed instructions
on the advanced features and operations of the GPSMAP 180. This allows you to
concentrate on a specific topic quickly, without reading through entire portions of
text that you may not need.

An Appendix section concludes the manual with specific information needed
for custom setup, trouble shooting, and indexing.

PREFACE

WARNING!

The electronic chart is an aid to navigation
and is designed to facilitate the use of autho­rized government charts, not replace them.
Only official government charts and notices to
mariners contain all information needed for
the safety of navigationand, as always, the
user is responsible for their prudent use.

INTRODUCTION

Packing List

vi

Before installing and getting started with your unit, please check to see that
your package includes the following items. If any parts are missing, please see
your GARMIN dealer immediately.

Standard Package:

 GPSMAP 180 Unit

 External Antenna and 30 cable

 Power/Data Cable

 Mounting Bracket and Knobs

 Owners Manual

 Quick Reference Card

Optional Accessories:

 Micro G-chart Electronic Chart Cartridges

 PC Kit

vii

GETTING STARTED

Table of Contents

Foreword .........................................................................................................................i

Cautions..........................................................................................................................ii

Capabilities/Warranty ................................................................................................iii-iv

Preface/Packing List.....................................................................................................v-vi

Table of Contents/Keypad Usage ................................................................................vii-x

Getting Started...........................................................................................................1-16

Initializing the Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2

Turning the Unit On & Screen Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . .3

Satellite Page Intro & Position Page Intro . . . . . . . . . . . . . . . . . . . . . . . . .4-5

Marking Your Present Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

Map Page Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

Using the Cursor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

Going to a Destination & Activating a Route . . . . . . . . . . . . . . . . . . . . . . . .9

Navigation Simulator & Map Scale Intro . . . . . . . . . . . . . . . . . . . . . . . . . .10

Using the Cursor to Pan and Mark Waypoints . . . . . . . . . . . . . . . . . . .10-11

Navigation Page Intro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Changing Simulated Speed & Direction and Highway Scales/Data Fields .13

Active Route Page & Deactivating a Route . . . . . . . . . . . . . . . . . . . . . . . . .14

Main Menu Intro & Deleting the Track Log . . . . . . . . . . . . . . . . . . . . . . .15

Turning the Unit Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Section 1: GPSMAP Status Page ...............................................................................17-19

Satellite Page Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Satellite Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Satellite Page Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Section 2: Position Page ...........................................................................................20-21

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

Position Page Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Section 3: Map Page.................................................................................................22-29

Map Page Overview & Data Window . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Map Modes

Position Mode & Cursor Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

Using the Cursor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

Selecting Map Scales

Over Zoom & No Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Map Page Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

Map Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27-28

Map Colors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Map Display & Data Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

Section 4: Navigation Page ......................................................................................30-32

Navigation Page Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .30

Highway Scale & Navigation Page Options . . . . . . . . . . . . . . . . . . . . .31-32

Section 5: Main Menu Page .. ........................................................................................33

Main Menu Page Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

Section 6: Waypoints ..............................................................................................34-42

Creating Waypoints & Using the Mark Key . . . . . . . . . . . . . . . . . . . . .34-35

Creating Waypoints On Map & By Text . . . . . . . . . . . . . . . . . . . . . . . . . .36

Reference Waypoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37

Reviewing and Editing Waypoints by Text . . . . . . . . . . . . . . . . . . . . . . . .38

Waypoint Definition Page Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Waypoint Submenus & Nearest Waypoints . . . . . . . . . . . . . . . . . . . . . . .40

Proximity Waypoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Create Waypoint & Waypoint List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

Section 7: GOTO/MOB/TracBack Functions ............................................................43-46

Selecting A GOTO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

GOTO Key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

MOB & TracBack Navigation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45-46

viii

GETTING STARTED

Table Of Contents

Section 8: Routes .....................................................................................................47-54

Creating a Route On Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Reviewing and Editing Routes On Map . . . . . . . . . . . . . . . . . . . . . . . . . . .48

Route Edit Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .49-50

Route Edit Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

Route List Page Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51-52

Active Route Page . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

Active Route Page Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

Section 9: Setup Menus............................................................................................55-64

Track Log Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Trip and Fuel Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

Route and Trip Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Sunrise & Sunset Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

System Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58-59

Navigation Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60-61

Timers & Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62

Input & Output Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

NMEA & DGPS Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .64

Section 10: Using G-chart cartridges ........................................................................65-66

Installing and Removing G-Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65

Using G-Chart Cartridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

ix

GETTING STARTED

Table Of Contents

APPENDICES

Appendix A:

GPSMAP 180 Installation . . . . . . . . . . . . . . . .67-69

Appendix B:

Wiring & Specifications . . . . . . . . . . . . . . . . .70-71

Appendix C:

Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72-73

Appendix D:

Map Datums . . . . . . . . . . . . . . . . . . . . . . . . . .74-76

Appendix E:

Navigation Terms . . . . . . . . . . . . . . . . . . . . . .77-78

Appendix F:

Time Offset Chart . . . . . . . . . . . . . . . . . . . . . . . . .79

Appendix G:

Loran TD Position Format . . . . . . . . . . . . . . . . . .80

Appendix H:

Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81-83

INTRODUCTION

Keypad Usage

M

P

J

G

O

T

Q

R

Scrolls the main pages in sequence and returns
display from a submenu page to a main page.

Captures your present position and displays the
mark position window.

Returns display to a previous page or restores a
data fields previous value.

Decreases the scale of the moving map and
highway pages.

Increases the scale of the moving map and
highway pages.

Controls the movement of the cursor and is used
to select options and positions, and to enter
data.

Displays the GOTO waypoint window, allowing
you to select the destination waypoint. Press
GOTO twice to select a destination waypoint
from the map.

Displays context-sensitive options window.
Press MENU twice to display main menu page.

Activates highlighted fields and confirms menu
options and data entry.

Turns the unit on and off and controls 3-level
screen backlighting.

The GPSMAP 180s advanced keypad sys­tem is designed to allow for fast, convenient
selection of navigation options and data
entry.

The Getting-Started Tour will introduce
you to most of the keypad and provide a
hands-on lesson in using the GPSMAP 180.
We strongly encourage you to take the
Getting-Started tour before using your unit
for actual navigation.

The GPSMAP 180 Quick Reference Card
contains helpful tips on using the unit and
performing various navigation tasks. Its a
good idea to keep the Quick Reference Card
nearby whenever youre navigating with your
new GPS chartplotter.

B

Marks your present GPS position and instantly
sets a return course while providing steering
guidance.

x

C

D

1

GETTING STARTED

Initialization

Initializing the Receiver

The first time you power up your new GPSMAP 180 is an important step in get­ting the best possible GPS performance. The receiver must be given an opportunity
to collect satellite data and establish its present position. To ensure proper initializa­tion, the GPSMAP 180 is shipped from the factory in AutoLocate

TM

mode, which will
allow the receiver to find itself anywhere in the world. To speed up the initializa­tion process, we recommend using the graphic initialization process described
below, which will usually provide a position fix in about a minute.

Before you initialize, make sure the GPSMAP unit and antenna have been correctly

installed on your vessel according to the instructions in Appendix A.

To turn the GPSMAP 180 on:

1. Press and hold the Pkey until the power tone sounds.

The welcome page will appear while the unit conducts a self test. Once the
internal test is complete, the mariners warning will appear, asking you to read and
acknowledge important information regarding the proper use of electronic charts.

To acknowledge the mariners warning:

1. Press the Tkey.

A message alert and prompt will also appear asking you to select an initialization
method.

To view a message:

1. Press the Jkey.

2. Press the Jkey again to return to the previous page.

A. The welcome page will be displayed while

the unit performs a self-test.

B. Confirm the mariners warning before

starting navigation. Remember that the
electronic chart is designed as a supple­ment to local government charts, not as a
replacement.

A

B

AB

The select initialization window will appear, with the select from map option

highlighted.

1. Press Tto initialize the receiver from the built-in worldwide map.

The Map Page will appear, prompting you to select your approximate present posi-

tion with the map cursor.

1. Use the Rkeypad to move the map cursor to a location close to your present position. If you
have difficulty identifying your exact position, press the Ckey to zoom in to a lower map scale.

2. Press Tto confirm your selection.

The GPSMAP 180 will now begin searching for the appropriate satellites for your
present position and should acquire a fix within a few minutes. While the receiver
searches for satellites, a flashing satellite icon will appear at the left-hand side of the
status bar. A signal strength bar will appear for each satellite in view, with the appro­priate satellite number under each bar. The progress of satellite acquisition is shown
in three stages:

 No signal strength bars the receiver is looking for the satellites indicated.
 Hollow signal strength bars the receiver has found the indicated satellite(s) and is col-

lecting data.

 Solid signal strength bars the receiver has collected the necessary data and the satel-

lite(s) is ready for use.

Once the receiver has collected information from at least three satellites, the flash­ing satellite icon on the status bar will quit flashing and remain solid, and the
GPSMAP 180 is ready for use.

Now that the unit is initialized, lets turn the unit off and then begin the Getting­Started Tour.

To turn the GPSMAP 180 off:

1. Press and hold the Pkey for about 3 seconds, until the screen is blank.

2

GETTING STARTED

Initialization

A. Use the arrow keypad to move the cursor to a

location close to your present position.

B. Hollow signal strength bars will appear on the

Satellite Page while the receiver collects satel­lite data.

A

B

GPSMAP 180 Getting-Started Tour

The GARMIN GPSMAP 180 is a powerful electronic charting/navigating system
that provides detailed chart coverage and convenient control of many advanced
features right from the map display. This tour is designed to take you through the
basic pages and functions of the system using the simulator mode. Once youre
familiar with the main pages and functions of the unit, refer to the reference sec­tion for instructions on performing specific tasks and functions.

The Getting-Started Tour assumes that the receiver has been properly installed
and initialized, and you have not changed any of the default unit settings. If you
have changed any settings (position formats, units of measure, etc.), the descrip­tions and pictures in the tour may not match your configuration.

To turn the GPSMAP 180 on:

1. Press and hold the Pkey until the power tone sounds. The welcome page will appear
while the unit conducts a self test.

2. Once the self test is complete, press the Tkey to acknowledge the mariners warning.

The Satellite Page will appear, and the receiver will begin to acquire satellites.
From the Satellite Page, you may also quickly adjust the screen contrast and back­lighting.

To adjust the screen contrast:

1. To increase the screen contrast, press the right arrow of the

R

keypad.

2. To decrease the screen contrast, press the left arrow of the

R

keypad.

3. Press the Tkey to finish.

The GPSMAP 180s three-level screen backlighting is controlled with

P

key,

and may be adjusted at any time from any page.

To turn on and adjust the backlighting:

1. Press the Prepeatedly until the backlighting is at the desired level (off, 1, 2, or 3).

3

GETTING STARTED

Power On & Screen Contrast

A. The screen contrast may be adjusted from the

Satellite Page by pressing the ARROW KEY­PAD. Press EDIT/ENTER to confirm changes.

B. Whenever the screen backlighting is on, a bulb

icon will appear in the status bar at the bottom
of every GPSMAP 180 page.

AB

The GPSMAP 180s Satellite Page provides a visual reference of satellite acquisi­tion and receiver status, with a signal strength bar graph and a satellite sky view in
the center of the page. Each page of the GPSMAP 180s system also features an
options page, which gives you access to other functions and features that relate to
the specific page you are viewing. To get a feel for how the options pages work,
lets put the GPSMAP 180 into simulator mode.

To place the GPSMAP 180 in simulator mode:

1. From the Satellite Page, press the Okey. The options page will appear, displaying a
menu of options and functions for the Satellite Page.

2. Use the UP or DOWN arrow of the Rkeypad to highlight the Start Simulator? option and
press T.

3. Press the Tkey to confirm the simulator warning.

Once the simulator has been started, the status field at the top of the page will
display a Simulating Navigation status, and youre ready to continue the rest of
the tour. Keep in mind that the GPSMAP 180 does not track satellites in simulator
mode, and should never be used for actual navigation. All the waypoint and route
planning done in simulator mode will still be retained in memory for future use.

4

GETTING STARTED

Satellite Page & Simulator Mode

A. To start the simulator, confirm the simulator

warning. Simulator mode should never be
used for actual navigation.

B. Whenever the GPSMAP 180 is in simulator

mode, a Setup Simulator? and an Exit
Simulator? option will appear on the options
page.

Status Field

Horizontal Accuracy

Satellite

Sky View

Signal Strength

Indicators

Status Bar

Dilution of Precision

5

GETTING STARTED

Page Sequence & Position Page

The Satellite Page is one of four main pages used in the GPSMAP 180s system.
All four pages are linked together in a simple chain, which allows you to scroll
through the pages in either direction using the Jand Qkeys. To continue
the tour, lets move on to the next page, the Position Page.

To scroll to the next page in sequence:

1. Press the Jkey.

The GPSMAP 180s Position Page shows where you are, what direction youre
heading and how fast youre going. The compass tape at the top of the page indi­cates the direction youre moving. The four user-selectable data fields below the
compass tape show your current course and speed over ground, along with a
resettable trip odometer and altitude display. Your current latitude and longitude,
along with a 12/24-hour clock, appear at the bottom of the page.

Now that youve seen how the Satellite and Position Pages can be used to moni­tor satellite acquisition and your present position, lets take a minute to learn how
to mark and store our present position as a waypoint. (Since were in simulator
mode, the present position displayed will be the last position calculated by the
receiver, which should be the spot where youve initialized the unit.) This will also
give you an opportunity to see how the GPSMAP 180s

R

keypad and Tkey

are used for data entry.

Graphic

CompassTape

Data

Fields

Position

Coordinates

Time

of Day

Status Bar

AB

To mark your present position:

1. Press the Mkey. The mark position page will appear, with a default three-digit way­point name and symbol.

2. Use the Rkeypad to highlight the waypoint name field (001) and press T.

3. Press the LEFT ARROW of the Rkeypad to clear the name field.

4. Use the Rkeypad to enter the name DOCK, using the UP and DOWN arrows to select
each letter, and the RIGHT arrow key to advance to the next character position. If you
make a mistake and select an incorrect character, simply use the LEFT arrow key of the

R

keypad to backspace the cursor and correct the entry.

5. Press Tto confirm the name.

6. The field highlight will advance to the symbol field. Press Tto access the waypoint
symbol page.

7. Use the Rkeypad to highlight the ANCHOR symbol.

8. Press Tto confirm the symbol.

9. Press Tagain to confirm the DONE? prompt and save the waypoint.

The waypoint is now stored in memory. Note that waypoints may also be creat­ed directly from the map display or by manually entering position coordinates.
Both of these techniques are described in the reference section of the manual
and/or on your GPSMAP 180 quick reference guide. To continue our tour, lets
move on to the Map Page.

1. Press the Jkey.

6

GETTING STARTED

Marking A Position

A. The mark position page will automatically

assign a default three-digit name for each
waypoint, which can be changed at any time
to an alphanumeric name containing up to
six-characters.

B. A complete set of waypoint symbols allows

you to mark inland and offshore waypoints
with a custom icon for fast waypoint recogni­tion.

A

B

The GPSMAP 180s Map Page combines digital chartplotting with a user-selec­table display of navigation data and a built-in worldwide database to 64 nm. It
will also be the page you use most to create and edit waypoints and routes. Before
we take off on our practice route, lets take a brief look at its various features and
displays.

The map display, located in the middle of the page, shows your boat as a trian­gle marker on an electronically generated chart, along with geographic names,
markers and buoys that are provided by the G-chart cartridge youre currently
using. It also displays your track, routes and nearby waypoints. An on-screen
cursor lets you pan to other map areas, determine the range and bearing to a posi­tion, and perform various waypoint and route functions.

The data window, located at the top of the page, provides a user-selectable dis-
play of various navigation data, including course, speed over ground, and the
bearing and distance to the cursor or a particular waypoint. The status bar, located
at the bottom of the page, displays the current map scale setting, as well as the sta­tus information described on page 29.

7

GETTING STARTED

Map Page

A. To select an on-screen waypoint, simply move

the cursor over the desired waypoint. The way­point/navaid name and position, along with the
bearing and distance from your present posi­tion, will be displayed.

B. The map page can also be configured to display

additional data fields and a graphic course devi­ation scale or compass. See page 26 for more on
map options.

Boat
Icon

Data

Fields

Map

Scale

AB

Using the Map Cursor

Working from the Map Page is a simple process that centers around the use of the

cursor. Controlled by the

R

keypad, the cursor is an important tool that can be
used to pan to other map locations, mark and edit waypoints and routes, and review
position data of on-screen navaids and waypoints.

To get a feel for using the Map Page and using the cursor, try the following

exercise:

1. Use the C key to set the map scale to the 64 nm setting. Your boat should be near the

center of the map, at the receivers last known position (if your boat isnt where it should be,
make sure that you have initialized the receiver and acquired a position as described on
pages 1-2).

2. Use the DOWN arrow of the Rkeypad to move the cursor down to the first lat/lon grid
south of your boats position.

3. Using the Rkeypad to move the cursor, try following the outline of the lat/lon grid closest
to your boat. Notice how another data field appears at the top of the page, showing the
bearing and distance from your boat to the cursor, along with the lat/lon of the cursor.

4. Press the Qkey to remove the cursor and recenter your boat on the map display.

As you become more familiar with the cursor, youll see that the map display
actively scrolls or pans, letting you explore areas around the world (even outside
of your current G-chartTMcoverage) and create waypoints and routes. Wherever you
move the cursor, pressing Qonce will return the map to your present position.

Now that you have a feel for how the cursor works, lets move on and see how the
GPSMAP 180 works on the water. To help you practice using the Map Page and
other features, weve stored a practice route in the receivers permanent memory, so
you can see exactly what youll experience when youre navigating with your new
GPS chartplotter.

8

GETTING STARTED

Using the Map Cursor

A. Whenever the cursor is active, the bearing

and distance of the cursor from your present
position will appear in a pop-up data win­dow.

B. To remove the cursor and recenter your ves-

sel on the map, press the QUIT key.

A

B

Going to a Destination

GPS is all about marking positions as waypoints and navigating to them using
the receivers steering guidance and map displays. Weve already seen how to use
the

M

key to store our present position, so its time to move on to the fun

part going to a destination. The Gkey, located on the left side of the keypad
above the Qkey, is the primary tool used to select a destination waypoint or a
route to navigate. The Gkey can be used in three primary ways:

 Pressing

G

once displays a list of all waypoints in memory, from which

you can select a single destination waypoint.

 Pressing

G

followed by the Okey provides a list of GOTO options
that lets you start a TracBackTMroute, select a destination waypoint from
the nearest waypoints list, select a stored route to navigate, or cancel the
current GOTO destination.

 Pressing

G

twice allows you to select an on-screen waypoint, navaid or

cursor position as a destination directly from the map display.

For our simulated trip, were going to select the preprogrammed tour route
(the second method), which will automatically place our vessel at the first route
waypoint. This will also give us an idea of how the

O

key is used throughout
the GPSMAP 180 system to provide context-sensitive options and functions. Lets
give it a try by activating the practice route stored in memory for navigation:

1. Press G. The waypoint list page will appear (if we were selecting a single waypoint to
navigate to rather than a route, we would highlight the waypoint and press

T

).

2. Press Oto display the context-sensitive options available for the GOTO

function.

3. Use the Rkeypad to highlight the Select Route? option. Press Tto confirm.

4. The select route page will appear, with the GPSMAP TOUR route highlighted.

5. Press T. The Map Page will reappear and display five waypoints chained together in
a simple route, with your boat at the first route waypoint.

9

GETTING STARTED

Using the GOTO key

A. Pressing GOTO once displays a list of all way-

points stored in memory. To pick a destination,
select the desired waypoint and press
EDIT/ENTER.

B. The GOTO options page allows you to either

start a TracBack route back home, select a des­tination from the nearest waypoints list, or
select a route to navigate.

AB

A data field at the top of the page will now display the bearing and distance to
the second route waypoint. To get started, lets enter a speed for our vessel, which
we can do from the Setup Simulator? listing on the options page. The setup sim-

ulator page is also available from any other page in the main page sequence.

To enter a boat speed:

1. Press the Okey to display the map options page.

2. Use the Rkeypad to select the Setup Simulator? option and press T.

3. Once the setup simulator page appears, press Tto access the SOG field.

4. Use the Rkeypad to enter a speed of 60 knots.

5. Press Tto finish, and Jto return to the map display.

Once a speed has been entered, youll notice that the map will begin to move
slowly, keeping your boat centered on the display. To get a better view of whats
going on, zoom in to a closer map scale.

1. Press the C key to select the 16 nm scale.

Youll now have a clearer picture of the route we are navigating, along with an
outline-only presentation of the surrounding shoreline. Because the usable range
of the built-in database is only valid to 64 nm scale, we no longer have full cartog­raphy available. Keep in mind that whenever you do exceed the usable range of
the built-in database or the Micro G-chart cartridge in use, the range field will dis­play OVR ZM or NO MAP to indicate that you should exercise extreme caution
using the cartography data. See page 25 and 66 for more information on map
scales and using Micro G-chart detailed cartography.

Now that were zoomed in a little closer to our route, we can pan ahead of our
vessel with the cursor to review and create on-screen waypoints and navaids. Try
moving the cursor to select the TOUR3 waypoint just use the

R

keypad to
move the cursor as close as possible to the waypoint (to move the cursor in small
increments, try a series of short key presses).

10

GETTING STARTED

Simulator Setup & Map Scales

A. To enter a boat speed or define the simulated

course, highlight the Setup Simulator? option
and press EDIT/ENTER.

B. Enter a boat speed of 60 knots to begin the

tour. This will allow you to complete the
Getting- Started Tour in 10-15 minutes.

A

B

Once the cursor is over the TOUR3 waypoint, youll notice that the waypoint
symbol and name will become highlighted, and the data field at the top of the
page will display the waypoint name, the range and bearing from your present
position, and the coordinates for the waypoint.

To review the waypoint page for a selected waypoint:

1. Press the Tkey.

2. To return to the Map Page, press Tagain.

The cursor can also be used to create new waypoints right from the map
display.

To create a new waypoint using the cursor:

1. Use the Rkeypad to move the cursor as close as possible to the following position:
N 35º 02.129; W 076º 26.106 (use the data window to verify the cursor position).

2. Press the Tkey to capture the cursor position.

3. Use the Rkey to highlight the waypoint symbol field.

4. Press Tto access the symbol page.

5. Press the DOWN arrow of the Rkeypad twice to select the wreck symbol.

6. Press Tto confirm, and Tagain to finish.

11

GETTING STARTED

Reviewing & Creating

Waypoints on the Map

A. Waypoints can be created from the map display

by moving the cursor to the desired position
and pressing the EDIT/ENTER key.

B. The create new waypoint page will automatical-

ly assign the next available three-digit number
as the default waypoint name. If you are creat­ing a waypoint at an on-screen navaid, the
navaid icon and name will be used as the
default symbol and comment.

AB

Now that were navigating to an actual destination, lets move on to the next

page of the GPSMAP 180 system, the Navigation Page:

1. Press the Jkey.

The Navigation Page provides graphic steering guidance to your destination.
The bearing (BRG) and distance (DIS) to the destination, with your current course
(COG) and speed over ground (SOG), are displayed at the top of the page, along
with a graphic compass to indicate your cardinal heading. The estimated time
enroute (ETE) and velocity made good (VMG, or the rate you are closing in on
your destination) are displayed at the bottom of the page.

As you head toward the destination, the middle section of the page gives you
visual guidance to your waypoint on a graphic highway, which displays the route
and nearby waypoints on screen. The moving arrow below the highway always
points to the destination waypoint relative to the direction youre moving. The
line down the center of the highway represents your desired track, while the bot­tom of the page provides a graphic indication of your crosstrack error (the dis­tance and direction you are off course) according to the scale at the bottom right
of the page.

12

GETTING STARTED

Navigation Page

A. In this example, our boat is off course to the

left by about 1/16th of a mile (the base of the
highway map is equal to the scale selected at
the bottom right of the page). To get back on
course, steer right.

B. In this example, our boat is off course to the

right. To get back on course, steer left. A digi­tal readout of your exact crosstrack error can
be displayed in any of the six data fields (see
page 29).

Data

Fields

CDI

Scale

Graphic

Highway

Graphic

Compass Tape

Pointer to
Waypoint

A

B

13

GETTING STARTED

Using the Navigation Page

Whenever the GPSMAP 180 is in simulator mode, you can adjust your speed
and course from the Navigation Page using the Rkeypad. As you head toward
each waypoint in the tour route, try adjusting your boat speed and course to get a
feel for how the highway works.

To adjust the simulated boat speed:

1. Press the UP arrow of the Rkeypad to increase the speed in 5 knot/kph/mph incre­ments. Press the DOWN arrow to decrease the speed in the same increments.

To steer the boat:

1. Press the LEFT and RIGHT arrows of the Rkeypad.

Notice that as you get off course, the highway and waypoint pointer move to
give you graphic guidance to get back on course. The base of the highway display
also serves as a graphic course deviation indicator (CDI), relative to the scale set­ting shown at the bottom right of the page. The scale setting represents the total
distance (or the width) of the base of the highway display. The default graphic
highway setting is 1/4 nm, but can be set for a 1/2-, 1-, 2- or 4-nm range.

To change the highway scale display:

1. Press the Cor Dkey (ZOOM OUT to increase, ZOOM IN to decrease the scale).

The Navigation Page data fields may also be configured to display any of ten
different navigation values. Lets change the VMG field to crosstrack error to pro­vide a digital readout of the distance were off course.

To change a data field:

1. Press the Okey to display the Navigation Page options.

2. Highlight the Change Data Fields? option and press T. The field highlight will now
appear in the top-left data field (the BRG field).

3. Use the Rkeypad to move the field highlight to the VMG field and press T.

4. Highlight the XTE option and press T, and press Qto finish.

A. To reset the simulator to steer the desired

course automatically, select the Auto COG set­ting from the options page.

B. The highway scale can be set to a 1/4-, 1/2-, 1-,

2-, or 4-nm/mi/km range with the ZOOM keys.

AB

14

Now that youve seen the four main pages, lets review the active route page,

which appears in the main page sequence whenever you are navigating a route:

1. Press the Jkey.

The active route page shows each waypoint of the active route in sequence,
with the waypoint name, distance and estimated time enroute to each waypoint
displayed. As you navigate the route, the active route list will be automatically
updated, indicating the next destination waypoint.

The active route page also provides quick access to many route activation, edit­ing and copying functions youll use most often, like inverting and deactivating
the active route. Lets go ahead and deactivate the active route.

To deactivate the active route and stop navigation:

1. Press the Okey.

2. Highlight the Deactivate Route? option.

3. Press Tto confirm.

To reset the boat speed to zero:

1. Press the Okey.

2. Highlight the Setup Simulator? option.

3. Press T.

4. Press Tto access the SOG field.

5. Press the LEFT arrow of the Rkeypad to clear the speed entry.

6. Press T.

GETTING STARTED

Active Route & Main Menu Page

A. To stop navigating the active route, select the

Deactivate Route? option and press
EDIT/ENTER.

B. Use the left arrow key to clear the SOG field

and press EDIT/ENTER to confirm.

A

B

As youve seen, the GPSMAP 180s main pages provide vital status, position,
navigation and map information. The last page well cover in the tour is the main
menu page, which provides access to the GPSMAP 180s waypoint, route and
planning functions, as well as various operational and navigation setup features.
The Main Menu is available from any page, and is accessed through the

O

key.

To access the Main Menu Page:

1. Press the Okey twice.

The Main Menu Pages 11 submenus are divided into categories by function.
You can select a particular submenu by simply highlighting the desired option
and pressing T. To get a feel for how the Main Menu Page works, lets clear out
the track log weve created during our simulated tour. This will ensure that you
have a clean slate once you start navigating in your home waters.

To select the track submenu:

1. Highlight the Track menu option and press T.

The track log page allows you to specify whether to record a track plot and
define how it is recorded. It also provides both an indicator of the total memory
used and the individual functions to clear the track log and start a TracBack route.

To delete the track log:

1. Highlight the Delete Track option and press T. A confirmation page will appear.

2. Highlight the Yes prompt and press Tto confirm.

3. Press Jto return to the main page sequence.

Congratulations! Youve now gone through the basic operation of the GARMIN
GPSMAP 180. Your new digital chartplotter is a powerful tool with many
advanced features not covered in the Getting-Started Tour. For detailed instruc­tions on using these features or performing a specific task, please refer to the
quick reference guide or the appropriate reference section of this manual.

A. The GPSMAP 180s track page lets you clear the

track log and start a TracBack route.

B. To delete the track log, confirm the warning

page by highlighting the YES prompt and
pressing EDIT/ENTER.

15

GETTING STARTED

Track Submenu &

Clearing the Track Log

To turn the GPSMAP 180 off:

1. Press and hold the Pkey for about 3 seconds, until the screen is blank.

Thank you for choosing the GARMIN GPSMAP 180 navigation system. We

hope that it will be a useful tool for you wherever you travel.

16

GETTING STARTED

Power Off

A

B

Satellite Page

The GPSMAP 180 Satellite Page provides a visual reference of various receiver
functions, including current satellite coverage, receiver operating mode and cur­rent receiver accuracy. The status information will give you an idea of what the
receiver is doing at any given moment.

The sky view and signal strength bars give you an indication of what satellites
are visible to the receiver and whether or not they are being tracked. The signal
strength is shown on a bar graph for each satellite, with the satellite number
below. When a satellite is visible but not being tracked, the strength bar will not
be shown and the sky view indicator will not be highlighted.

The sky view shows a birds-eye view of the position of each satellite relative
to the receivers last known position. The outer circle represents the horizon (track
up), the inner circle is 45º above the horizon, and the center point is a position
directly overhead. Use the sky view to determine if there are obstructions shading
your reception of GPS signals.

17

SECTION

1

SATELLITE PAGE

Overview

A. Whenever the GPSMAP 180 is searching for

satellites, no signal strength bars will appear.

B. Once the receiver has found the satellite(s) indi-

cated, a hollow signal strength bar will appear.
After satellite data has been collected, the signal
strength bars will become solid.

Status Field

Horizontal Accuracy

Satellite

Sky View

Signal Strength

Indicators

Status Bar

Dilution of Precision

AB

Receiver Status, EPE & DOP

Receiver status is indicated at the top of the page, with the current estimated

position error (EPE) and dilution of precision (DOP) to the left of the sky view.

DOP is an indication of satellite geometry quality measured on a scale of one to
ten (lowest numbers the best, highest numbers the poorest). EPE uses DOP and
other factors to calculate a horizontal position error in feet or meters. The status
field will show one of the following conditions:



Searching the Sky the receiver is looking for any satellites.

 AutoLocate the receiver is is looking for any satellite whose almanac has been col-

lected. This process can take up to five minutes.

 Acquiring Satellites the receiver is looking for and collecting data from satellites vis-

ible at its last known or initialized position, but has not collected enough data to cal­culate fix.

 2D Navigation at least three satellites with good geometry have been acquired and a

2 dimensional position fix (latitude and longitude) is being calculated. 2D Differential
Navigation will appear when you are receiving DGPS corrections in
2D mode.

 3D Navigation at least four satellites with good geometry have been acquired and

your position is now being calculated in latitude, longitude and altitude. 3D
Differential Navigation will appear when you are receiving DGPS corrections in
3D mode.

 Poor GPS Coverage the receiver is no longer tracking enough satellites for a 2D

or 3D fix.

 Receiver Not Usable the receiver is unusable, possibly due to incorrect initialization

or abnormal satellite conditions. Turn the unit off and back on to reset.

 Simulating Navigation the receiver is in simulator mode.

18

A. The status bar at the bottom of the page dis-

plays important status, alarm, and map scale

information. It also provides on-screen user

and message prompts.

B. The status bar will display an anchor symbol

or PRX icon whenever the anchor drag alarm

or proximity alarm has been triggered.

SECTION

1

SATELLITE PAGE

Receiver Status

A

B

Satellite Page Options

The GPSMAP 180s Satellite Page features a context-sensitive options page that

provides access to functions and features relating to the Satellite Page.

To display the Satellite Page options:

1. Press O.

To select a menu option:

1. Highlight the desired option and press T.

The following options are available:

 Initialize Position? allows you to initialize the receiver on map or by text. See

pages 1-2 for instructions on initialization.

 Start AutoLocate? allows the receiver to locate your position automatically.
 Track Up/North Up SkyView? allows you to select between a north up or track

up sky view display.

 Setup Simulator? allows you to define speed, course, and position values while

in simulator mode. See the Getting-Started Tour for more on using simulator
mode.

19

A. Whenever the GPSMAP 180 is in simulator

mode, the Setup Simulator? option will appear
on all the main pages.

B. The setup simulator page allows you to define

your speed and course over ground, as well as
your position and altitude. The Auto COG
option will automatically steer the desired
course to your destination. Your speed and
course can also be selected from the Navigation
Page using the rocker keypad (see page 13).

SECTION

1

SATELLITE PAGE

Satellite Page Options

Position Page

The GPSMAP 180 Position Page shows you where you are, what direction you
are heading and how fast you are going. The top of the page features a graphic
compass tape to indicate the direction youre heading (while youre moving), and
four user selectable data fields: course over ground (COG), speed over ground
(SOG), distance traveled (TRP) and altitude (ALT). The bottom half of the page
displays your present positions coordinates, along with the time of day as calcu­lated using GPS satellites. The status bar at the bottom of the page indicates posi­tion fix status, and is described in detail on page 18.

The units of measure for speed, distance, position, and altitude are all user­selectable through the navigation setup option on the Main Menu Page. The time
of day, shown in UTC (Universal Time Coordinated, or Greenwich Mean Time)
may be set to display in a 12- or 24-hour time format (with a local offset) through
the system setup option on the Main Menu Page.

20

The trip odometer can be reset from the Position
Page options window. To reset the odometer,
select the Reset Trip Distance? option and press
EDIT/ENTER.

SECTION

2

POSITION PAGE

Overview

Graphic

Compass Tape

Data

Fields

Position

Coordinates

Time

of Day

Status Bar

A

B

Position Page Options

The GPSMAP 180s Position Page features a context-sensitive options page that

provides access to functions and features relating to the Position Page.

To display the Position Page options:

1. Press O.

To select a menu option:

1. Highlight the desired option and press T.

The following options are available:

 Reset Trip Distance? resets the trip odometer (TRP) field to zero.

 Change Data Fields? allows you to choose the data displayed in the four user-

selectable data fields. Five data types are available:

 SOG speed over ground
 COG course over ground
 TRP distance traveled
 ALT altitude
 VDC DC voltage

To change a data field:

1. Highlight the Change Data Fields? option and press T.

2. Move the field highlight to the field you want to change and press

T

.

3. Select the desired data field option and press T.

 Restore Defaults? resets all data fields to the factory settings.

 Setup Simulator? allows you to define speed, course and position values while in

simulator mode. See the Getting-Started Tour for more on using simulator mode.

21

A. The four data fields at the top of the position

page can be changed by selecting the Change
Data Fields? option.

B. Each data field can be set to display speed over

ground, course over ground, distance traveled,
altitude, or DC voltage.

SECTION

2

POSITION PAGE

Position Page Options

AB

GPSMAP 180 Map Page

The GPSMAP 180s Map Page provides a comprehensive display of electronic
cartography, plotting and navigational data. The map display shows your boat on
a digital chart, complete with geographic names, navaids, depth contours and a
host of other chart features. It also plots your track and displays any routes and
waypoints you create. An on-screen cursor lets you pan and scroll to other map
areas, determine the distance and bearing to a position, and perform various route
and waypoint functions.

The data window, located at the top of the page, provides a user-selectable dis-
play of your current course and speed over ground, along with the bearing and
distance to a destination waypoint. Whenever the cursor is active, an additional
data window will appear below to indicate the position, range and bearing to the
cursor or a selected waypoint or navaid. Each data field may be configured to dis­play any one of ten data options. The data window may also be changed to dis­play additional data fields, a graphic compass tape, or a CDI scale. The status bar
at the bottom of the page displays the map scale currently in use.

22

A. Use the cursor to pan ahead to other map

areas. The map display will automatically
scroll forward when you reach the edge of the
map.

B. To select or highlight an on-screen navaid

or waypoint, simply move the cursor over the
waypoint symbol. The cursor will snap to
the waypoint, and display its name and posi­tion in the data field.

SECTION

3

MAP PAGE

Overview

Boat
Icon

Data

Window

Map

Scale

Status

Bar

A

B

Map Modes

The map display uses the cursor keypad and a set of hard keys to control most

map display functions. The

C

and Dkeys, combined with the Rkeypad, let
you select zoom ranges and move the cursor. Two basic map operating modes,
position mode and cursor mode, determine what cartography is shown on the
map display. Position mode pans the cartography to keep the present position
marker within the display area, while cursor mode pans the cartography to keep
the cursor within the display area.

The GPSMAP system will always power up in the position mode, with your

vessel centered on the map display.

 Whenever sufficient map coverage is not available to keep the boat cen-

tered, the boat icon will move toward the edge of the display.

 If the boat icon attempts to go off the display, the zoom level may need to

be adjusted to keep cartography on screen.

Whenever the

R

keypad is pressed, the GPSMAP 180 will enter cursor mode.

In cursor mode:

 The cursor can be moved over the map display using the

R

keypad.

 Whenever the cursor reaches the edge of the display, the map will scroll

forward under the cursor. Keep in mind that the boat icon will move with
the map scrolling and may go off the display screen (you may not be able to
see your present position).

 When the cursor is stationary, a fixed coordinate position will appear in the

position field. Note that the distance and bearing will change as the boats
position changes.

 Whenever you zoom in cursor mode, the cursor will be centered on screen.
 To return to position mode, press the

Q

key.

23

A. Position mode on inland water cartography.

B. Cursor mode on inland water cartography.

SECTION

3

MAP PAGE

Map Modes

AB

Using the Cursor

The cursor allows you to pan away from your present position and scroll
to other map areas around the world (even outside of your current Micro G­chart

TM

coverage). As you pan past the edge of the current map display, the screen

will actively scroll forward to provide continuous map coverage.

To move the cursor:

1. Press the Rkeypad to move the cursor in an up, down, left, or right direction.

As you move the cursor, the distance and bearing from your present position to
the cursor will be displayed in the data window, along with the cursors position
coordinates. Keep in mind that when the cursor is stationary, the distance and
bearing from your present position will change as your boat moves. The cursor
may also be used to snap to on-screen waypoints and navaids, allowing you to
review a selected position directly from the map display.

To select an on-screen waypoint or navaid with the cursor:

1. Use the Rkeypad to move the cursor to the desired waypoint or navaid (if there are
several waypoints grouped closely together, zoom in closer for a better view).

2. When a waypoint or navaid is selected, it will become highlighted on screen, with the
name and position displayed.

To eliminate the cursor and re-center your position on-screen:

1. Press the Qkey.

The cursor may also be used to create new waypoints directly from the map.

To create a waypoint with the cursor:

1. Use the Rkeypad to move the cursor to the desired map position.

2. Press T.

3. Press Tto confirm the new waypoint.

24

A. To create a new waypoint at the cursor, move

the cursor to the desired position and press
EDIT/ENTER.

B. The create new waypoint page will appear,

where you may change the waypoint name,
symbol, and comment before saving the way­point.

SECTION

3

MAP PAGE

Using the Cursor

Selecting Map Scales

The map display has 16 available range scales from 1/8th to 4096 n.m. (1/4 to

7500km). The map scale is controlled by the

C

and Dkeys, with the current

scale displayed at the bottom of the data window.

To select a map scale:

1. Press the Dkey to zoom out and the Ckey to zoom in.

The GPSMAP 180s system has a built-in worldwide database to 64 n.m.(see
Appendix D for a built-in coverage map), with more detailed coverage available
through the use of Micro G-chart

TM

data cartridges (see Section 10 for installing

and using Micro G-chart

TM

cartridges). The GPSMAP 180 will display cartography
as long as there is chart information available for the range youve selected. Map
coverage will conform to the following conditions:

 When the selected zoom range is covered by either the internal database or a

Micro G-chart data cartridge, cartography will be displayed.

 When the selected zoom range is covered by both the internal database and

a Micro G-chart cartridge, cartography will be displayed using the data with the best res­olution.

 When the selected zoom range exceeds the resolution of the chart in use by

up to two settings, overzoom cartography will be displayed. The display
will not show any filled landmass areas, and an Ovr Zm warning will appear
in the scale field. The lat/lon grid will also be turned on regardless of the map
configuration setting.

 When the selected zoom range exceeds the resolution of the chart in use by more

than two settings, all cartography will be replaced by a track plot display, and a No
Map warning will appear in the scale field. The lat/lon grid will be displayed
regardless of the map configuration setting. Additional caution should be used while
navigating in track plot mode.

A

B

25

A. Whenever the selected map scale exceeds the

resolution of the chart by up to two settings, an
Ovr Zm warning will appear in the scale field.

B. Whenever the selected map scale exceeds the

resolution of the chart by more than two set­tings, a No Map warning will appear in the
scale field.

SECTION

3

MAP PAGE

Selecting Map Scales

AB

Map Page Options

The GPSMAP 180 Map Page is designed to be a flexible tool that can be cus­tom-tailored to your exact navigation needs. The map options page provides
access to many of the features and functions that will help you configure the Map
Page to your own preferences.

To display the Map Page options:

1. Press O.

To select a menu option:

1. Highlight the desired option and press T.

The following options are available:

 Maximize/Normal Map? allows you to select between a full-screen map display

or the default map display with data window.

 Map Outlines Off/On? allows you to specify whether coverage outlines for

Micro G-chart cartography are displayed or not. The default setting is on.

 Measure BRG/DIS? allows you to measure the bearing and distance between any

two points on the map display.

To measure the BRG/DIS between two points:

1. Highlight the Measure BRG/DIS? option and press T. An on­screen pointer will appear on the map display at your present position.

2. Move the cursor to the desired reference point (the point that you want
to measure from) and press T.

3. Move the cursor to the point that you want to measure to. The bearing
and distance from the reference point will be displayed at the bottom
left of the data window.

4. Press the Qkey to finish.

26

A. The map options page provides access to all

map configuration, page display, and data
field options.

B. The Maximize Map? option will eliminate

the data fields and show full-screen cartogra­phy.

SECTION

3

MAP PAGE

Map Page Options

A

B

 Configure the Map? allows you to determine what chart features are displayed on

a particular map scale to prevent excessive clutter. The map configuration page fea­tures an on/off grid with a list of chart features down the left side. The zoom scales
are displayed across the top of the grid with the chart scale currently in use also
indicated. The far-left scale setting represents all map scales 64 nm and above. A
check mark in a grid box indicates that the chart feature listed will be displayed at
the corresponding scale.

Individual grid boxes may be turned on and off through a popup scale window,
while entire rows may be controlled by using the map configuration options page
(accessible through the

O

key).

To use the map configuration grid:

1. Use the Rkeypad to select the desired map item and press T.
A popup window will appear with the current settings displayed.

2. Use the Rkeypad to highlight the scale you want to change.

3. Press Tto change the on/off setting.

4. Press Qto finish.

To turn an entire row on or off:

1. Use the Rkeypad to select the desired map item.

2. Press the Okey.

3. Select the Enable Row? or Disable Row? option and press T.

The map configuration page also allows you to set the moving map display to a
North Up, Track Up, or Desired Track Up orientation.

To change the map orientation:

1. Use the Rkeypad to highlight the Orientation field and press T.

2. Select the desired setting and press T.

27

A. The map configuration grid allows you to define

what items appear on the display at each map
scale.

B. To turn an entire row on for the selected map

item, highlight the Enable Row? option and
press EDIT/ENTER.

SECTION

3

MAP PAGE

Map Configuration

AB

The map configuration options page also features a map calibration function that
allows you to calibrate the map display your exact physical surroundings or to cor­rect data from older charts. Before using the map calibration function, check to
make sure that your map datum selected on the GPS matches the datum on the
chart you are using (see page 61). To calibrate the map display, you must know
exactly where you are, and understand that the correction is generally valid only in
a limited range from the point of correction.

Map calibration should only be performed while the vessel is not moving, and
should never be used to attempt SA corrections, which can degrade accuracy up to
330 (100 meters). The maximum correction is 16,400 feet (5000m).

To calibrate the map:

1. Select the Calibrate the Map? option and press T.

2. Use the Rkeypad to move the arrow cursor from the satellite
position (indicated by the satellite icon) to your exact position. The
bearing, distance, and position will be indicated in the data window.

3. Press Tto confirm the calibration offset.

The next option available from the map configuration page is the set map colors
option, which allows you to define the fill color (grayscale) of the land and water
used on the map display. Three options are available: no color (no fills for land or
water), gray land/white water (the default setting), and white land/gray water.

To select a map colors option:

1. Select the Set Map Colors? option and press T.

2. Highlight the desired map color option and press T.

The map configuration options page also features a restore defaults function that
can be used to quickly restore all map configuration options to the factory settings.

To restore the map configuration options to the factory defaults:

1. Highlight the Restore Defaults? settings and press T.

28

A. To calibrate the map, highlight the Calibrate

the Map? option and press EDIT/ENTER.

B. A satellite icon will remain on the map to

indicate the GPS position, while the boat
marker will move to reflect the calibration
changes.

CAUTION!
The map calibration function should never be

used to attempt correcting for Selective
Availability errors.

SECTION

3

MAP PAGE

Map Configuration

& Map Colors

A

B

 Setup Page Display? allows you to specify the number of fields displayed in the

data window section of the map page. A graphic compass tape or CDI scale may
also be displayed. The following options are available:

 2 Fields  2 Fields & Compass
 2 Fields & CDI  4 Fields
 4 Fields & Compass  4 Fields & CDI
 6 Fields  6 Fields & Compass
 6 Fields & CDI  8 Fields

To select a page display option:

1. Highlight the Setup Page Display? option and press T.

2. Select the desired option and press T.

 Change Data Fields? allows you to specify the data displayed in each data field

used on the map display. The following options are available:

 BRG- bearing to active wpt  DIS- distance to active wpt
 SOG- speed over ground  COG- course over ground
 ETE- estimated time enroute  ETA- estimated time of arrival
 XTK- crosstrack error  VMG- velocity made good
 TRN- turn angle to wpt  WPT- active wpt name

To change a data field:

1. Highlight the Change Data Fields? option and press T.

2. Move the field highlight to the desired field and press T.

3. Select a data field option and press T.



Restore Defaults? resets all map page options (except map configuration options,

see pages 27-28) to the factory settings.

 Setup Simulator? allows you to define speed, course, and position values while in

simulator mode. See the Getting-Started Tour for more on using simulator mode.

29

A. The map page can be configured to display a

variety of navigation data.

B. Each data field can be set to display one of ten

data options.

SECTION

3

MAP PAGE

Page Display

& Data Fields

GPSMAP 180 Navigation Page

Whenever a GOTO, MOB, TracBack or route has been activated, the GPSMAP
180 will provide digital and graphic steering guidance to the destination with the
Navigation Page. The top half of the nav page features four user-selectable data
fields that display the bearing (BRG) and distance (DIS) to waypoint, along with
your current course (COG) and speed over ground (SOG). In addition, theres a
moving compass tape to indicate the direction youre heading. Two additional
data fields at the bottom of the page show the estimated time enroute (ETE) and
velocity made good (VMG) to your destination.

The middle section of the screen provides visual guidance to the waypoint on a
graphic highway display. The line down the center of the highway represents your
desired track, while a graphic indication of the distance and direction you are off
course is shown on a scale at the bottom right of the page (the selected scale rep­resents the distance from side to side). The arrow pointer below the highway
always points to the destination waypoint relative to the direction you are moving.

30

The Navigation Page can be configured to show
the active waypoint, all route waypoints and/or
nearby waypoints on the graphic highway.

SECTION

4

NAVIGATION PAGE

Overview

Data

Fields

CDI

Scale

Graphic

Highway

Graphic

Compass Tape

Pointer to
Waypoint

A

B

As you head toward your destination, the highway will move to indicate your
progress to the waypoint and which direction you should steer to stay on course.
If you are navigating a route, the Navigation Page will show each route waypoint
in sequence, with the active leg indicated by the white portion of the highway.
Nearby waypoints not in the active route will also be displayed. The highway
scale may also be zoomed in or out to display a larger or smaller view of the high­way. Five scales are available from 1/4 to 4 nm, with a default setting of 1/4 nm.

To change the highway scale:

1. Press the Cor Dkey to select the desired setting.

Navigation Page Options

The GPSMAP 180s navigation options page allows you to define the nav data
fields and select what waypoints are displayed on screen.

To display the Navigation Page options:

1. Press O.

To select a menu option:

1. Highlight the desired option and press T.

31

A. To change the highway scale, press the IN and

OUT keys.

B. The navigation options page lets you set up the

Navigation Page to your own preferences.

SECTION

4

NAVIGATION PAGE

Highway Scale &

Nav Page Options

AB

The following options are available for the Navigation Page:

 Change Data Fields? allows you to define the data displayed in any of the six

user-selectable data fields. Ten data options are available:

 BRG bearing to active wpt  DIS distance to active wpt
 SOG speed over ground  COG course over ground
 ETE estimated time enroute  ETA estimated time of arrival
 XTK crosstrack error  VMG velocity made good
 TRN turn angle to wpt  CTS course to steer

To change a data field:

1. Highlight the Change Data Fields? option and press T.

2. Highlight the field you want to change and press T.

3. Select the desired data field option and press T.

 Configure Highway? allows you to select what waypoints are shown on the high-

way display. Four options are available:

 Nav & Nearest Waypoints all route and nearest waypoints displayed
 Nav Waypoints only waypoints in the active route will be displayed
 Active Waypoint only the active waypoint will be displayed
 No Waypoints no waypoints will be displayed

To configure the highway display:

1. Highlight the Configure Highway? option and press T.

2. Select the desired option and press T.



Restore Defaults? resets all navigation page options to the factory settings.

 Setup Simulator? allows you to define speed, course, and position values while in

simulator mode. See pages 4-16 for more details on using simulator mode.

 Auto COG? allows you to reset automatic steering while simulating navigation

and cancel any course adjustments made with the

R

keypad.

32

A. Ten data options are available for each data

field on the Navigation Page. The digital
crosstrack error option is especially useful to
display the exact distance you are off course
in feet/miles or meters.

B. To select what waypoints appear on the

graphic highway, highlight the desired setting
and press EDIT/ENTER.

SECTION

4

NAVIGATION PAGE

Nav Page Options

A

B

Main Menu Page

The GPSMAP 180s Main Menu Page provides access to various waypoint, sys­tem, navigation, and interface management and setup menus. The Main Menu Page
is available from any page in the GPSMAP 180s system, and is accessed through
the

O

key.

To access the Main Menu Page:

1. Press Otwice.

The 11 submenus are divided into categories by function.

To select a submenu from the Main Menu Page:

1. Highlight the submenu you want to view and press T.

For specific instructions on using a submenu, see the waypoints, route, or setup
sections of this manual.

Creating and Using Waypoints

33

A. The waypoint category options on the Menu

Page are described in the Waypoints section on
pages 34-42.

B. The routes category options are described on

pages 47-54.

SECTION

5

MAIN MENU PAGE

Overview

AB

The GARMIN GPSMAP 180 stores up to 250 alphanumeric waypoints with a
user-defined icon and comment available for each waypoint. Waypoints can be
created using three basic methods:



M

key used primarily for marking your present position, the Mkey
also provides options that allow you to select a map or navaid position
from the map display.

 On Map allows you to define a new waypoint position from the map dis-

play using the cursor.

 Text Entry allows you to enter a new waypoints position coordinates

manually (from a chart, etc.) or by referencing its bearing and distance
from a stored waypoint or your present position.

Mark Key

The GARMIN GPSMAP 180s

M

key lets you quickly capture your present
position or cursor or navaid position in order to create a new waypoint. You
must have a valid position fix to mark your present position.

To mark your present position:

1. Press the Mkey. The mark position page will appear, with a default three-digit name
for the new waypoint.

2. To accept the waypoint with the default name, symbol and comment (the date and time of
creation), press Tto confirm the Done? prompt.

3. To enter a different name, symbol or comment, highlight the appropriate field and press
the Tkey.

4. After entering and confirming your changes, move the field highlight back to the Done?
prompt and press T.

34

A. The MARK key is used primarily to mark

your present position, but it can also be used
to mark the cursor or a navaid position from
the map page.

B. The mark position page also allows you to

add the new waypoint to the end of any
route. If youre heading out without a
planned route, you can create a series of way­points along the way with the mark key and
save them to an open storage route. When
youre ready to head back, simply invert the
route to get back (see page 51).

SECTION

6

WAYPOINTS

Creating Waypoints &

MARK Key

A

B

The MARK key may also be used on the Map Page to mark the cursor position or
an on-screen navaid. To mark a navaid, select the desired navaid with the cursor.
The GPSMAP 180 will use the navaid text shown on the cartography as the default
comment.

To mark the cursor or navaid position with the Mkey:

1. Use the Rkeypad to move the cursor to the desired position or navaid.

2. Press the

M

key.

3. Highlight the Use Map Posn? or the Use NAVAID Posn? option and press

T

.

4. To accept the waypoint with the default name, symbol, and comment (the date and time of
creation), press Tto confirm the Done? prompt.

5. To enter a different name, symbol or comment, highlight the appropriate field and press
the Tkey.

6. After entering and confirming your changes, move the field highlight back to the Done?
prompt and press T.

35

A. To create a waypoint at an on-screen navaid,

move the cursor over the desired navaid.

B. Press the MARK key and select the Use Navaid

Posn? option. Press EDIT/ENTER to finish.

SECTION

6

WAYPOINTS

Using the MARK Key

Waypoint Name Field

Waypoint Symbol Field

Waypoint Comment Field

AB

Creating Waypoints On Map

Waypoints may also be quickly created from the map display, which allows you

to point and shoot at any map position to create a new waypoint.

To create a new waypoint on map:

1. Use the Rkeypad to move the cursor to the desired map position. If you want to create
the new waypoint at an on-screen navaid, highlight the navaid on the map display.

2. Press T.

3. To accept the waypoint with the default name, symbol and comment, press

T

. If you
are creating a waypoint at an on-screen navaid, the default symbol and comment will
automatically reflect the selected navaids name and symbol.

4. To change the name, symbol or comment, highlight the appropriate field and press

T

.

5. After entering and confirming your changes, move the field highlight back to the Done?
prompt and press T.

Creating Waypoints By Text Entry

Waypoints may also be created by manually entering a positions coordinates or
referencing a stored waypoint through the Create Waypoint submenu option on
the Main Menu Page.

To create a new waypoint by manually entering its coordinates:

1. Press Otwice to display the Main Menu Page.

2. Highlight the Create Waypoint option and press T. The waypoint definition page will
appear, with the next available waypoint number and the receivers last known position
as the default name and position.

3. Use the Rkeypad to enter the new waypoint name, icon, position, and comment. Press

T

after the last character in each section.

4. When you have finished entering all your waypoint data, use the

R

keypad to highlight

the Done prompt and press T.

36

A. Once a position has been selected on map,

the create new waypoint page will appear.
Here you can change the waypoint name,
symbol or comment before saving the way­point.

B. To create a waypoint by text entry, start by

entering the new waypoints name.

SECTION

6

WAYPOINTS

Creating Waypoints On

Map & By Text

A

B

Reference Waypoints

A new waypoint may also be created without knowing position coordinates by
entering its range and bearing from an existing waypoint or your present position.
The GPSMAP 180 will then calculate the position coordinates for you, using the
reference selected.

To create a new waypoint using a reference waypoint:

1. Select the Create Waypoint option from the Main Menu Page and press

T

.

2. Enter the name, icon, and comment for the new waypoint.

3. Highlight the reference waypoint field and press

T

.

4. Enter the name of the reference waypoint using the

R

keypad, or press

O

to select the waypoint from the nearest list, waypoint list, or map display. Leave
the reference field blank to use your present position.

5. Press

T

to begin entry of the bearing from your reference waypoint to the

new waypoint position. Enter the bearing and press

T

.

6. Press

T

to begin entry of the distance from your reference waypoint to the

new waypoint position. Enter the distance and press

T

. The position for the

new waypoint will automatically be calculated.

7. Highlight the Done prompt and press

T

to finish.

37

A. Enter the bearing from the reference waypoint

to the new waypoint in the BRG field.

B. Enter the distance from the reference waypoint

to the new waypoint in the DIS field.

SECTION

6

WAYPOINTS

Creating a Waypoint

by Reference

AB

Reviewing & Editing Waypoints By Text

Once you have created and stored a waypoint, it may be modified, reviewed,
renamed, or deleted at any time through the waypoint definition page. The way­point definition page is available for any stored waypoint by highlighting the
desired waypoint from the map display or selecting it from any waypoint list and
pressing the

T

key.

To access the waypoint definition page:

1. Use the Rkeypad to highlight the desired waypoint on the map display (or any
waypoint list).

2. Press Tto display the waypoint definition page.

From the waypoint definition page, you may change the waypoint symbol,

position coordinates, or the waypoint comment for the selected waypoint.

To change the waypoint symbol:

1. Highlight the waypoint symbol field and press T.

2. Use the Rkeypad to select the desired symbol and press Tto confirm.

To change the position coordinates:

1. Highlight the coordinates field and press T.

2. Use the Rkeypad to edit the coordinates and press Tto confirm.

To change the waypoint comment:

1. Highlight the comment field and press T.

2. Use the LEFT arrow of the Rkeypad to clear the comment field.

3. Use the Rkeypad to enter a comment (up to 16 characters).

4. Press Tto confirm.

38

A. The waypoint definition page will appear

whenever a waypoint is selected from the
map or a waypoint list.

B. A 20-character custom waypoint comment

may be assigned to every waypoint. The
default comment is the date and time of cre­ation.

SECTION

6

WAYPOINTS

Reviewing &

Editing Waypoints

A

B

Waypoint Definition Page Options

The waypoint definition page also features an options page that allows you to
edit the selected waypoint on the map display, rename the selected waypoint or
delete the waypoint from memory.

To display the waypoint definition page options:

1. Press the Okey.

To review/edit the selected waypoint from the map display:

1. Highlight the Edit Wpt On Map? option and press T.

2. The selected waypoint will appear on the map display, with the waypoint name and coor­dinates shown at the top of the map, along with the distance and bearing to the waypoint
from your present position.

3. To move the selected waypoints position, press T. A MOVE label will now appear
under the cursor arrow.

4. Use the Rkeypad to move the cursor arrow to the desired position. The cursors coordi­nates, along with the distance and bearing from the waypoints position, will be displayed
at the top of the map display.

5. Press Tto set the waypoints new position, and Qto return to the waypoint defini­tion page.

To rename the selected waypoint:

1. Highlight the Rename Waypoint? option and press T.

2. Enter the new waypoint name and press T.

3. Press Tto confirm the Yes prompt.

To delete the selected waypoint:

1. Highlight the Delete Waypoint? option and press T.

2. Press Tto confirm.

39

A. To review or edit a waypoint on the map dis-

play, select the Edit Wpt On Map? option.

B. To move the selected waypoint, press

EDIT/ENTER. Use the arrow keypad to select
the new position, and press EDIT/ENTER to
finish.

SECTION

6

WAYPOINTS

Waypoint Definition Page

Options

AB

Waypoint Submenus

The GPSMAP 180s Main Menu Page features four waypoint submenus that let
you manage a large number of waypoints quickly and efficiently. The submenus
also provide a continuously updated nearest waypoints list and a proximity way­point alarm function that can be used to define an alarm circle around submerged
hazards, shallow waters, etc.

To access the Main Menu Page waypoint submenus:

1. Press Otwice.

The first waypoint submenu is the nearest waypoints list, which shows the nine
nearest waypoints that are within 100 miles of your present position. The nearest
waypoints are continuously updated to your present position, and provide quick
access to the closest points of safety in emergency situations.

To scroll through and review the nearest waypoint list:

1. Highlight the Nearest Waypoints option and press T.

2. Use the Rkeypad to scroll through the list in either direction.

3. Press Tto review the highlighted waypoint.

4. To return to the waypoint list, highlight the Done? prompt and press

T

.

5. The field highlight will automatically scroll to the next waypoint. If you want to review each
waypoint, you can scroll through any waypoint list by pressing the Tkey repeatedly.

To select a nearest waypoint as a GOTO destination:

1. Use the Rkey to select the desired GOTO waypoint.

2. Press G, followed by T.

40

A. The Menu Page features four waypoint

submenus.

B. The nearest waypoint list continuously

updates to show the nine nearest waypoints
to your present position.

SECTION

6

WAYPOINTS

Waypoint Submenus &

Nearest Waypoints

A

B

Proximity Waypoints

The proximity waypoints list lets you define an alarm circle around a stored
waypoint position, and can be used to help you avoid reefs, rocks, or restricted
waters. Up to nine waypoints may be listed, with a maximum alarm radius of

99.99 nautical or statute miles or kilometers. If a proximity alarm circle overlaps
with an existing alarm circle, a Proximity Overlap message will appear each time
the unit is turned on. If you enter an alarm circle overlap, you will only be alerted
to the closest proximity waypoint.

To enter a proximity waypoint:

1. Highlight the Proximity Waypoint option and press T.

2. Use the

R

key to highlight the first blank waypoint field and press T.

3. Enter the name of the proximity waypoint using the

R

keypad, or press Oto

select the waypoint from the nearest waypoint list, waypoint list, or map display.

4. Press

T

to confirm. The distance field will now be highlighted.

5. Press

T

to begin entry of the proximity radius.

6. Use the

R

keypad to enter a distance value (to 99.99 units) and press

T

.

To turn proximity alarms on or off:

1. Use the Rkeypad to highlight the alarms on/off field and press T.

2. Select the desired setting and press

T

.

To remove a proximity waypoint from the list:

1. Use the Rkeypad to highlight the waypoint to be removed.

2. Press

O

.

3. Highlight the Clear Alarm? field and press

T

.

4. To clear all proximity waypoints, select the Clear All option and press

T

.

41

A. Whenever you enter a proximity waypoints

alarm circle, a PRX indicator will appear in the
status bar (the alarms option must be set to On
position). Once youve left the alarm circle, the
proximity indicator will automatically reset.

B. To clear all proximity waypoints, select the

Clear All? option from the proximity options
page. Finish the deletion by confirming the Yes
prompt.

SECTION

6

WAYPOINTS

Proximity Waypoints

AB

Create Waypoint

The third waypoint submenu available from the Main Menu Page is the Create
Waypoint submenu, which allows you to create a new waypoint by manually
entering coordinates. Instructions for using the create waypoint submenu are pro­vided on page 36.

Waypoint List

The last waypoint category available from the Main Menu Page is the waypoints
list, which displays a master list of all waypoints currently stored in memory. From
the waypoints list, you may review, edit, rename, or delete individual waypoints;
or delete all user waypoints. The total number of stored and available waypoints is
displayed at the top of the waypoints page, with the stored waypoints arranged in
numerical/alphabetical order and listed in two columns in the center of the page.

To scroll through and review the waypoint list:

1. Highlight the Waypoints option from the Main Menu Page and press

T

.

2. Use the Rkeypad to scroll through the list in the desired direction.

3. Press Tto review the highlighted waypoint.

4. Press Tto return to the list.

To delete an individual waypoint from the list:

1. Use the Rkeypad to highlight the waypoint to be deleted and press O.

2. Press T.

3. Press the Tkey to confirm the deletion warning.

To delete the entire waypoint list:

1. Press the Okey to select the options window.

2. Highlight the Delete All User Wpts? option and press T.

3. Use the Rkeypad to highlight the YES prompt and press Tto confirm.

42

A. The waypoints list displays all waypoints

stored in memory in a two-column format.
Temporary waypoints created by the
TracBack feature are assigned a TXXX name
and a footprint symbol.

B. The waypoints list options page lets you

delete individual waypoints or the entire way­point list.

SECTION

6

WAYPOINTS

Create Waypoint &

Waypoint List

A

B

Going to a Destination

The GPSMAP 180 provides four ways to navigate to a destination: GOTO,
MOB, TracBack and route navigation. The most basic method of selecting a desti­nation is the GOTO function, which lets you select a waypoint as your destination
and quickly sets a direct course from your present position. The

G

key can be
used in three ways: from a list of waypoints, directly from the map display and
from a list of GOTO options. Pressing the Gkey once displays a list of all way­points in memory, from which you can select a single destination waypoint.

To activate a GOTO from the waypoint list:

1. Press the Gkey.

2. Select a waypoint and press

T

.

Selecting a GOTO On Map

Pressing the

G

key twice allows you to graphically select an on-screen way­point, navaid, or cursor position as a destination. A graphical GOTO may be used
to select one of three options from the map display: an existing waypoint, an on­screen navaid, or a cursor position. If you are selecting a navaid or a new position
as the GOTO destination, the GPSMAP 180 will automatically create or move the
waypoint named MAP at the navaid or map position.

To activate a GOTO from the map display:

1. Press the Gkey twice.

2. To select an existing user waypoint, highlight the waypoint on screen and press

T

.

3. To select a navaid, highlight the navaid on screen and press

T

. The GOTO
NEW WAYPOINT page will appear, displaying the navaid position as a MAP
waypoint, with the navaid symbol and text as the default icon and waypoint
comment. Press

T

to save the waypoint and begin navigation.

4. To select a cursor position as your destination, move the arrow cursor to the
desired position and press

T

. The GOTO NEW WAYPOINT page will

appear and display the position as the MAP waypoint. Press

T

to save the

waypoint and begin navigation.

43

A. Press GOTO once to select a destination from a

list of waypoints.

B. Press GOTO twice to select a destination way-

point with the map cursor. If you are not
selecting an existing waypoint as your destina­tion, a new waypoint named MAP will be cre­ated. Keep in mind that the MAP waypoint will
be overwritten for each MAP GOTO. This
allows you to navigate to on-screen navaids
without permanently storing the navaid as a
waypoint. If you want to save the MAP way­point, rename it following the steps on page 39.

SECTION

7

GOTO/MOB

Selecting a

GOTO Destination

AB

GOTO Key Options

The GOTO options page provides a list of additional GOTO options that let
you start a TracBack route, select a destination waypoint from the nearest way­points list, select a route to navigate, or cancel the current GOTO destination.

To display the GOTO options:

1. Press O.

To select a menu option:

1. Highlight the desired option and press T.

The following options are available:

 Start TracBack? allows you to create and start navigation of a TracBack route

back to the oldest track log point in memory (see pages 45-46 for more on using
the TracBack function).

 Show All Wpts? displays the GOTO waypoint list.

 Show Nearest Waypoints? allows you to select the GOTO destination from a list

of the nine nearest waypoints to your present position.

To select a nearest waypoint as a GOTO destination:

1. Highlight the Show Nearest Waypoints option and press T.

2. Select the desired waypoint and press T.

 Select Route? allows you to quickly select a stored route for navigation.

To select a route to navigate:

1. Highlight the Select Route option and press T.

2. Select the desired route and press T.

 Cancel GOTO? cancels the current GOTO destination and resumes navigation of

any previously selected route.

44

A. The GOTO options page lets you start a

TracBack route, select a destination from the
nearest list, select a route to activate, or can­cel the current GOTO destination.

B. The nearest waypoints list limits waypoint

choices to provide quick access to nearby
anchorages, facilities, etc. which are stored as
waypoints.

SECTION

7

GOTO/MOB

GOTO Options

A

B

MOB

The GPSMAP 180s man overboard function (MOB) lets you simultaneously

mark and set a course to a position for quick response to emergency situations.

To activate the MOB function:

1. Press the Bkey.

2. Press the

T

key to confirm and begin navigating to the MOB position.

Once a MOB has been activated, a MOB icon will appear on the map display,
and the destination field on the Map Page will display the bearing, distance, and
ETE to the MOB position based on your present speed and course.

To stop navigation to the MOB position:

1. Press the Gkey, followed by O, to display the GOTO options page.

2. Select the Cancel GOTO option and press

T

.

TracBack Navigation

The third method of navigating to a destination is by using the GPSMAP 180s
TracBack feature. The TracBack function allows you to retrace your path using the
track log automatically stored in the receivers memory, which will eliminate the
need to store waypoints along the way. TracBack routes are created by reducing
your track log into a route of up to 30 waypoints and activating an inverted route
along those points. Once activated, a TracBack route will lead you back to the
oldest track log point stored in memory, so its good idea to clear the existing
track log at the start of your current trip (e.g., your dock) before you get started.

To clear the track log and define a starting point for a TracBack route:

1. Press the Okey twice to display the Main Menu Page.

2. Highlight the Track option and press

T

.

3. Select the Delete Track? option and press

T

.

4. Highlight the Yes field and press

T

.

45

A. The GPSMAP 180s MOB mode can be used to

set a course to a passing spot for quick response
to emergency situations, fish strikes, etc.

B. To define a starting point for a TracBack route,

clear the track log.

SECTION

7

GOTO/MOB

MOB & TracBack

Navigation

AB

To activate a TracBack route:

1. Press the Gkey, followed by the Okey.

2. Highlight the Start TracBack? option and press

T

.

Once a TracBack has been activated, the GPSMAP 180 will take the track log
currently stored in memory and divide it into segments called legs. Up to 30
temporary waypoints (e.g. T001) will be created to mark the most significant fea­tures of the track log in order to duplicate your exact path as closely as possible.
To get the most out of the TracBack feature, remember the following tips:

 Always clear the track log at the point that you want to go back to (dock, etc.).
 The RECORD option on the track log setup page must be set to Fill or Wrap.
 There must be at least two track log points stored in memory to create a TracBack route.
 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 available
waypoints to create a route with an emphasis on the track log closest to the destination.

 If the track log interval is set to the Time option, the route may not follow your exact

path (keep the interval set to resolution for best performance).

 If the receiver is turned off or satellite coverage is lost during your trip, the TracBack will

draw a straight line between any point where coverage was lost and where it resumed.

 If the changes of direction and distance of your track log are very complex, 30 waypoints

may not 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.

 Whenever a TracBack route is activated, the receiver will automatically erase any tempo-

rary waypoints (e.g., T001) that are not contained in routes 1-20. If there are temporary
waypoints stored in routes 1-20, the receiver will create any new temporary waypoints
using the first three-digit number available.

46

A. The TracBack feature uses your track log to

create a route back to where you started.

B. Once a TracBack is activated, the track log is

divided into segments using temporary way­points, and an inverted route is activated
back to the oldest track log point in memory.

SECTION

7

GOTO/MOB

TracBack Navigation

A

B

Routes

The last way to navigate to a destination is to create a user-defined route. The
GARMIN GPSMAP 180 system lets you create and store up to 20 reversible routes
(numbered 1-20), with up to 30 waypoints each. Routes can be created and modi­fied right from the Map Page, allowing you to see each route on-screen as you cre­ate, review, modify, or navigate the route. All of the GPSMAP 180s route func­tions are accessed through the main menu.

To create a route on the map:

1. Press the Okey twice to display the Main Menu Page.

2. Highlight the Routes field and press T. The routes page will appear, showing all the
routes currently stored in memory.

3. Press the Okey to display the route options page.

4. Press Tto select the Create New Route option.

The route edit page will appear, with the cursor displayed as an arrow pointer,

and will allow you to select your route waypoints using one of two methods:

5. To add an existing waypoint or navaid to the route, use the arrow pointer to highlight the
desired waypoint on screen and press T.

6. To add a new waypoint to the route, use the arrow pointer to select the desired map posi­tion and press T. Press Tagain to confirm the new waypoint.

As you add each new waypoint to the route, the data window at the top of the
map display will show the route number you are creating, along with the first and
last route waypoints of the route. A route line will appear on the map to indicate
each completed leg, and a dotted line will appear to indicate the distance and
bearing to the arrow pointer from the last route waypoint.

7. Repeat steps 5 and 6 until you have finished defining all route waypoints.

8. Press Qto finish and enter review mode, or Jto return to the main page
sequence.

47

A. The route options page provides access to the

GPSMAP 180s route functions.

B. Use the arrow pointer and EDIT/ENTER to add

waypoints to the route. The create waypoint
page will appear whenever you have selected a
position that is not already stored as a way­point.

SECTION

8

ROUTES

Creating a Route

On Map

AB

Once a route has been created on the map (and the Qkey has been pressed
to finish), the map display will automatically enter the route review mode. The
arrow pointer will be replaced by the map cursor, located at the last route way­point. The route edit mode allows you to review and modify the route displayed
through a pop-up window menu for each waypoint. You may also use the cursor
to select an individual route leg and insert a new route waypoint.

To edit a route waypoint:

1. Use the cursor to highlight the desired route waypoint and press T.

A pop-up menu of editing choices will appear, with options for reviewing,
removing, moving, or inserting a route waypoint.

To review a route waypoint:

1. Highlight the Review? option and press T.

To remove a route waypoint:

1. Highlight the Remove? option and press T.

To move a route waypoint:

1. Highlight the Move? option and press T.

2. Move the cursor to the new map position and press T.

To insert new route waypoint(s) at the beginning or end of the route:

1. Select the first (to add waypoints to the beginning of the route) or last (to add waypoints to
the end of the route) route waypoint with the map cursor, and press

T

.

2. Highlight the Insert? option and press T.

3. Move the cursor to the new waypoint position and press T.

4. If you are not inserting an existing waypoint, press Tto confirm the new waypoint.

5. Repeat steps 3 and 4 to insert additional waypoints, or press Qto finish.

48

A. To move a route waypoint, select the Move?

option and press EDIT/ENTER.

B. Move the arrow cursor to the new waypoint

position and press EDIT/ENTER to confirm.

SECTION

8

ROUTES

Reviewing & Editing

Routes On Map

A

B

The GPSMAP 180s route edit mode also allows you to insert a new route way-

point in any route leg using the map cursor.

To insert a new waypoint between two existing route waypoints:

1. Use the cursor to select the leg you want to insert the new waypoint in (the route line will
change to a dotted line when the leg is selected) and press T.

2. Move the cursor to the new map position and press T.

3. If you are not inserting an existing waypoint, press Tto confirm the new waypoint.

The route edit options page provides access to a variety of functions which can
be used to review, activate, invert, or edit the route as text and adjust the map
view of the selected route.

To display the route edit options:

1. Press O.

To select a menu option:

1. Highlight the desired option and press T.

The following options are available:

 Edit As Text? allows you to modify a route by text entry.

To edit a route by text entry:

1. Highlight the Edit As Text? option and press T. The text edit page
will appear, showing a list of all route waypoints, with the desired track
and distance of each leg displayed.

2. Select the route waypoint you want to review or change and press

T

. A pop-up menu with four route editing options will appear.

To review the selected waypoint:

1. Highlight the Review? option and press T.

A. A new route waypoint may be inserted into

any route leg by pointing to the new way­point or position and pressing EDIT/ENTER.

B. The Edit As Text? option allows you to

review and modify waypoints by text data
entry.

49

SECTION

8

ROUTES

Route Edit Mode

AB

To insert a new waypoint before the selected route waypoint:

1. Highlight the Insert? option and press T.

2. Enter the name of the new waypoint using the Rkeypad, or press

O

to select the new waypoint from the nearest list, waypoint list, or

map display.

3. Press Tto finish.

To remove the selected route waypoint:

1. Highlight the Remove? option and press T.

To change the selected route waypoint:

1. Highlight the Change? option and press T.

2. Enter the name of the new waypoint using the Rkeypad, or press

O

to select the new waypoint from the nearest list, waypoint list, or

map display.

3. Press Tto finish.

The route edit options page features five more functions. These functions may

be selected by highlighting the desired function and pressing

T

:

 Activate Route? activates the route you are editing and begins navigation.
 Invert Route? activates the route you are editing in reverse order and begins nav-

igation.

 Center On Vessel? redraws route edit map with your vessel in the center of the

display.

 Center On First Wpt? redraws route edit map with the first route waypoint in

the center of the display.

 Deactivate Route? stops navigation of the route currently selected.

To exit the route edit mode and return to the route list page, press the

Q

key.

50

A. To remove a route waypoint, highlight the

waypoint on the map, press EDIT/ENTER,
and select the Remove? option from the pop­up window.

B. The route edit options page lets you activate,

invert, or deactivate the route you are editing.
The Center On Vessel and Center On First
Wpt options redraw the map to display the
desired option.

SECTION

8

ROUTES

Editing Routes &

Route Editing Options

A

B

Route List Page

The GPSMAP 180s route list page displays all the routes currently stored in
memory in numerical order, with the route number and comment displayed. Route
00 is always reserved for the TracBack route, while routes 1-20 serve as storage
routes (route 20 is stored as the GPSMAP tour route, which may be deleted at any
time). From the list, you may enter your own 16-character route comment and
select a specific route for activation, editing, or other management functions.

To enter a custom route comment:

1. Highlight the desired route and press T.

2. Press the left arrow key of the Rkeypad to clear the comment field.

3. Use the Rkeypad to enter the new route comment and press T.

Once you have selected a route from the route page, additional functions for that
route are available from the route options page.

To display the route options:

1. Press O.

To select a menu option:

1. Highlight the desired option and press T.

The following options are available from the route list page:

 Create New Route? allows you to create a new route (see page 47).
 Activate Route? activates the selected route and begins navigation.
 Invert Route? activates the selected route in reverse order and begins navigation.
 Edit On Map? allows you to edit the selected route on the map (see pages 48-49

for specific instructions).

 Edit As Text? allows you to edit the selected route by text (see pages 49-50 for

specific instructions).

A. The route list page displays each route stored

in memory, along with a 16-character user
comment. The default comment is the name
of the first and last route waypoint.

B. The route list options page provides quick

access to many route functions, including
activating and deactivating a selected route.

51

SECTION

8

ROUTES

Route List Page

AB

Route List Page Options (cont.)

 Clear Route? allows you to clear all waypoints from the selected route.

To clear the selected route:

1. Highlight the Clear Route? option and press T.

2. Press Tto confirm the clear route warning.

 Copy Route? allows you to copy the waypoints of a selected route to another

route. The route copy function can be used to copy a TracBack route (route 00) to
another route in order to either prevent losing the route the next time a TracBack
route is

activated, or save a modified version of an existing route without losing the

original.

To copy a route:

1. Highlight the Copy Route? option and press T. The selected route
will appear as the copy from route, and the first open storage route will
appear as the copy to route.

2. Press Tto confirm. (If youd like to change the route number that is
being copied or the open route which is being copied to, highlight the
appropriate field and press T; select the new route number and
press T.

 Deactivate Route? stops navigation of the route you are currently navigating.

52

A. To delete all waypoints from a selected route,

highlight the Clear Route? option and press
EDIT/ENTER.

B. Once a route is cleared, all waypoints are

removed from the route. They are still stored
in memory, however.

SECTION

8

ROUTES

Route List Options

Active Route Page

Whenever you have activated a route in the GPSMAP 180 system, the active

route page will appear in the main page sequence. The active route page shows

each waypoint of the active route, with the waypoint name, desired track, cumu­lative distance and ETE or ETA for each waypoint from your present position. The
current destination waypoint, the active to waypoint, is marked with an arrow
icon. As you navigate a route, the waypoint list will automatically update to indi­cate the next active to waypoint first.

From the active route page, you can:

 Change the route comment-

see page 51 for instructions.

 Edit the route on map- see pages 47-48 for instructions.

Additional functions for the active route are available from the active route

options page.

To display the active route options:

1. Press O.

To select a menu option:

1. Highlight the desired option and press T.

53

Each waypoint on the active route page may be
reviewed, deleted, or changed right from the active
route page. To edit an active route waypoint, high­light the desired waypoint and press EDIT/ENTER.

Select the desired function from the pop-up menu
and press EDIT/ENTER.

SECTION

8

ROUTES

Active Route Page

Active Route Page Options

The following options are available from the active route page:

 Invert Route? activates the active route in reverse order and begins navigation.
 Activate Route? reactivates the active route and selects the route leg closest to your

current position as the new active leg.

 Edit On Map? allows you to edit the selected route on map (see pages 48-49 for

specific instructions).

 Clear Route? allows you to clear all waypoints from the selected route.
 Copy Route? allows you to copy the waypoints of the active route to another route.
 Change Data Fields? allows you to define the data displayed in the distance and

ETE fields. Four data options are available:

 DIS distance to active wpt  DTK desired track
 ETE estimated time enroute  ETA estimated time of arrival

 Restore Defaults? resets all active route page options to the factory settings.
 Deactivate Route? stops navigation of the route you are currently navigating.
 Setup Simulator? allows you to define speed, course, and position values while in

simulator mode. See the Getting-Started Tour for more on using the simulator mode.

54

The Change Data Fields? option lets you specify
what information is displayed for each route way­point. Four data options are available: distance,
desired track, and ETA or ETE to each route way­point.

SECTION

8

ROUTES

Active Route

Page Options

A

B

Track Log Submenu

The Main Menu Pages track submenu lets you specify whether or not to record a track plot (an electronic
recording of your path) and define how it is recorded. It also provides an indicator of the track memory used
and selects functions to clear the track memory and start a TracBack route. The following functions are
available:

 Record Mode lets you select one of three track recording options:

 Off No track log will be recorded. Note that selecting the Off setting will prevent

you from using the TracBack feature.
 Fill a track log will be recorded until the track memory is full.
 Wrap A track log will be continuously recorded, wrapping through the available

memory (replacing the oldest track data with new data).

 Interval defines the frequency with which the track plot is recorded. Three interval settings are

available:

 Time records track plot based on a user-defined time interval.
 Resolution records track plot based upon a user-defined variance from

your course over ground. The resolution option is the default setting and
is recommended for the most efficient use of memory and TracBack per­formance. The distance value (entered in the interval field) is the maxi­mum error allowed from the true course before recording a track point.

 Distance records track based on a user-defined distance between points.

 Interval Value defines the distance or time used to record the track log.
 Delete Track? allows you to clear the track log currently stored in memory.
 Start TracBack? converts the current track log into an inverted route and begins

route navigation along the track log.

To reset all track options to the default settings:

1. Press O, followed by T.

55

A. The Wrap option will continuously record a

track log, and replace the oldest track log point
with new data. The Fill option will record a
track log until the memory is full.

B. The track submenus default settings may be

quickly restored from the track options page.

SECTION

9

SETUP MENUS

Track Log Setup

AB

Trip and Fuel Planning

The GPSMAP 180s trip and fuel planning submenu lets you plan and review
distance, fuel, and ETE/ETA information between any two waypoints; your pre­sent position and a stored waypoint; or any part of a stored route. Sunrise and
sunset information is also provided. Two planning modes are available: point-to­point and route planning.

To use the point-to-point planning mode:

1. Highlight the Trip & Fuel Planning option from the Main Menu Page and press T.

2. If the plan field is not set to Point-To-Point, press the Okey and select it from the
options page.

3. Highlight the first waypoint field and press T. Press the left arrow key to clear the field,
and use the Rkeypad to enter the name of the starting waypoint. You may leave the
waypoint field blank to use your present position, or press the Okey to select the way­point from the nearest list, the waypoint list, or the map display. Press

T

to confirm the

waypoint.

4. Move the field highlight to the second waypoint field and follow the steps above to select
the destination waypoint.

5. Enter a speed for your trip in the speed field, or press Oto select your current SOG
for the speed value.

6. Enter an hourly fuel flow (if desired) in the fuel field, and press T.

7. Enter the date and time of your departure (the default date and time will be the current
date and time in UTC or local time, whichever you have selected) and press

T

.

The bottom of the page will now display the desired track and distance
between the two points; the estimated time enroute and fuel required; the date
and time of your arrival; and the sunrise and sunset times at the destination for
the date of arrival.

56

A. To perform point-to-point planning, enter a

TO and FROM waypoint, or leave the field
blank if you want to use your present posi­tion.

B. Enter a date and time for your departure. The

sunrise/sunset and ETA at the TO waypoint
will be displayed at the bottom of the page.

SECTION

9

SETUP MENUS

Trip & Fuel Planning

A

B

The route planning mode lets you calculate the same planning information for

any route stored in memory, in leg or cumulative leg, or route totals.

To use the route planning mode:

1. Highlight the Trip & Fuel Planning option from the Main Menu and press T.

2. If the plan field is not set to Route, press Oand select it from the options page.

3. Highlight the route number field and press T.

4. Use the Rkeypad to select the route you want to plan and press T.

5. Highlight the leg field and press T.

6. To plan the cumulative totals for the all route legs, select the ALL optionor use the

R

keypad to select a specific route leg to plan. Press Tto confirm.

7. Enter a speed for your trip, or press Oto select your current SOG for the speed value.

8. Enter an hourly fuel flow (if desired) in the fuel field, and press T.

9. Enter the date and time of your departure (the default date and time will be the current
date and time in UTC or local time, whichever you have selected) and press

T

.

The bottom of the page will now display the planning information for the route
leg selected or the cumulative values for the entire route. The route planning
mode will also let you plan cumulative totals for multiple route legs by using the
Hold First Waypoint? selection from the options window.

To plan multiple route legs:

1. Follow steps 1 through 6 above to select the last route leg you want to plan. For example,
select leg 03 if you want to plan cumulative totals for the first three legs of the route (with­out including the rest of the route).

2. Enter the speed, fuel and date/time values as described in steps 7-9 above.

3. Press the Okey to display the options page.

4. Select the Hold First Waypoint? option and press T. The cumulative totals from the
first route waypoint to the end of the selective leg will appear at the bottom of the page.

57

A. To plan cumulative totals for an entire route,

select the All option from the leg field.

B. To plan cumulative totals through a particular

leg, select the Hold First Waypoint? option
from the Trip and Fuel Planning options page.
Then enter the last leg you want to plan in the
leg field.

SECTION

9

SETUP MENUS

Route &

Trip Planning

AB

The fuel and trip planning submenu also allows you to calculate the sunrise

and sunset times for your present position or any waypoint for a selected date.

To use the sunrise/sunset planner:

1. Highlight Trip & Fuel Planning option from the main menu and press T.

2. Highlight the first waypoint field and press T. Press the left arrow key to clear the field,
and use the Rkeypad to enter the name of the desired waypoint. You may leave the
waypoint field blank to use your present position, or press the Okey to select the way­point from the nearest list, the waypoint list, or the map display. To calculate the
sunrise/sunset for your present position, leave both waypoint fields blank.

3. Press Tto confirm.

4. Highlight the date field and press T.

5. Enter the date you want sunrise/sunset information for (the current date and year will be
used as the default setting) and press T. The sunrise and sunset times for the arrival
date will be displayed at the bottom right of the planning page.

Setup Submenus

The last four options available from the Main Menu Page provide access to the
various system, navigation, alarm, and interface settings of the GPSMAP 180. The
system setup submenu is used to select the operating mode, date and time for­mats, tone preferences, backlight timeout, and display contrast.

 Operational Mode lets you select between normal operation and simulator mode.

The GPSMAP 180s system only pretends to track satellites in simulator mode, and
should not be used for actual navigation. Waypoints and routes created in

simulator

mode are saved in memory and are available for use in normal mode.

 Time Offset provides a data entry field to enter the time difference between UTC

time and the local time. (See Appendix F for a list of time offsets.) When entering a
time offset, be sure to select a positive or negative offset. Note that entering an off­set will not automatically display local time. The local setting from the Date/Time
Selection submenu must be selected.

58

A. The system setup submenu provides access to

the GPSMAP 180s time formats and con­trast/backlight controls.

B. When entering a time offset, be sure to select

a positive or negative indicator to the left of
the offset value.

SECTION

9

SETUP MENUS

Sunrise/Sunset Planning

& System Setup

 Local/UTC lets you choose to display the date and time in UTC (Greenwich Mean

Time) time or local time offset from UTC time. The default setting is local with a 0
offset. (If you are boating in the United States, be sure to enter a negative time indi­cator in front of the appropriate time offset for your location).

 Tone Selection lets you select an audible tone to sound for either messages and

keystroke confirmation (the default setting), messages only, or not to sound at all
(the tone selection does not affect the external alarm operation).

 Display Contrast provides a slide bar to adjust the LCD screen contrast in order to

compensate for changes in temperature or lighting conditions.

 Backlight Timeout provides an automatic shutoff for the GPSMAP 180s screen

backlighting. Six settings are available: No Timeout (the backlight will stay on until
it is turned off), 15 seconds (default setting); 30 seconds; and 1, 2, or 4 minutes.
Keeping the timeout at the lowest acceptable setting will prolong the life of the
backlight.

 Language lets you select one of nine languages that the unit can display. The avail-

able lanaguages are; English, Danish, Finnish, French, German, Italian, Portuguese,
Spanish, Swedish.

The system setup page also features an options page that allows you to quickly
reset all the system setup options to the factory default settings and define speed,
course and position values while in simulator mode (see Getting-Started Tour).

To view the system setup page options:

1. Press the Okey.

To restore the default settings:

1. Highlight the Restore Defaults? option, and press T.

A

B

59

A. The tone preference will not affect external

alarm operation.

B. Keeping the backlight timeout at the lowest

acceptable setting will prolong the useful life
of the backlight.

SECTION

9

SETUP MENUS

System Setup

& System Setup Options

AB

Navigation Setup

The navigation setup submenu is used to select a variety of navigation informa­tion including: position format, units of measure, and heading preferences. This
submenu is also used to select map datums, set the CDI scale and adjust the built­in velocity filter. The following options are available:

 Position Format lets you select the coordinate system used to display

position. The following formats are available:

 hddd.dddddº (degrees)  hdddºmm.mmm (degrees and minutes)
 hdddºmmss.s (deg/min/sec)  British grid
 German grid  Irish grid
 Maidenhead  Swedish grid
 Swiss grid  Taiwan grid
 Loran TD  UTM/UPS grid

See Appendix G, page 80 for more information on the Loran TD positon format.

 Navigation Units selects the format for speed and distance measurements. You may

select from nautical, statute, or metric formats. (The default setting is nautical.)

 Depth Units selects the format for depth contour display on Micro G-chart offshore

chart cartridges. Depth contours can be displayed in feet, meters, or fathoms. (The
default setting is feet.)

 Heading lets you select what reference is used in calculating heading information.

You can select to reference automatic magnetic variation, true north, grid heading,
or user magnetic variation. (The default setting is automatic.)

To enter a user magnetic variation:

1. Highlight the Heading field and press T. Select the User Mag Var
option and press T.

2. Press Tto access the variation field, and use the Rkeypad to
enter the desired variation. Press Tto confirm.

 CDI Scale provides a list of six CDI scale settings for the map page CDI: +/-0.10,

0.50, 1.0 (default), 5.0, 10.0, and 25.0 miles or kilometers. The scale represents
the distance from the center of the scale to either end of the scale.

60

A. The GPSMAP 180 will also display position

coordinates in eight grid formats.

B. To enter a user magnetic variation, select the

User Mag Var option and enter a direction
and value in the variation field.

SECTION

9

SETUP MENUS

Navigation Setup

 CDI Steer To allows you select a steer-to-center or steer-to-D-Bar orientation for

graphic steering guidance. The steer-to-center selection displays your position as the
vertical line on the scale, and your desired track as the center of the scale. The steer
to D-Bar option displays your position as the center of the scale, with the desired
track as the vertical line. The default setting is steer to center.

 Map Datum provides a list of the available map datums for use with the GPSMAP

system. For a list of the available GPSMAP datums, see Appendix D. The default set­ting is WGS 84.

 Velocity Filter allows you to select the GPSMAPs response time to changes in track

or ground speed. Three settings are available: automatic, on, or off. The auto
(default) setting will monitor the 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 240 seconds. Selecting a higher setting may be
desirable in slow-speed applications with frequent changes in track.

To enter a user defined velocity filter value:

1. Highlight the Velocity field and press T. Select the On option and
press T.

2. Highlight the time value field.

3. Press T.

4. Enter a value in seconds (up to 240) and press Tto confirm.

A

B

61

A. CAUTION! Using the incorrect map datum can

seriously effect the accuracy of your GPS receiv­er. The GPS datum should always match the
datum of the local chart you are using. If no
datum information is indicated on the charts
you are using, contact the chart manufacturer.

B. Keeping the velocity filter on the Auto setting

will allow the GPSMAP 180 to automatically
monitor and adjust the response time for track
and speed calculations.

SECTION

9

SETUP MENUS

Navigation Setup

Timers & Alarms Setup

The timer & alarms submenu is used to control various alarm/timer settings.

 Timer sounds an alarm when an entered interval (up to 99:59:59) has expired, or

provides a continuous running clock timer to 99:59:59.

To use the countdown timer:

1. Select the Count Down menu option.

2. Enter the desired time interval in the interval field, and press T.

3. Once the count down time has expired, an alarm message will appear,
and the timer will automatically switch to the count up mode.

4. To reset the timer, select the reset option and press T.

 Clock Alarm provides an alarm for the system clock. To use the clock alarm, select

the On option and enter the desired time of day in the time field.

 Arrival Alarm lets you specify an alarm to sound when youre a specified distance

away from a destination waypoint. Three options are available:

 Off- No arrival alarm will sound.
 Auto- An arrival alarm will sound one minute before the destination, based

upon your current speed and course over ground.

 On- An arrival alarm will sound at the alarm distance specified in the distance

field for the destination waypoint (the On setting will only provide an arrival
alarm for the final destination waypoint of the active route).

 Crosstrack Alarm provides an alarm for crosstrack error (XTK) when your vessel is

off course by more than a specified distance, up to 99.99 (units).

 Anchor Drag Alarm lets you specify an alarm to sound when youve exceeded a

specified drift distance, up to 9999 (units). Whenever the anchor alarm is trig­gered, an anchor icon will appear in the status bar.

A. The timer field can be set to count down

from a specified interval or provide a running
count of elapsed time.

B. The On setting of the arrival alarm will

cause the alarm to sound only for the final
destination waypoint of a route at the dis­tance specified.

62

AB

SECTION

9

SETUP MENUS

Timers & Alarms

Input/Output Submenu

The Input/Output submenu lets you control interface settings for connecting
external NMEA devices, a DGPS receiver, or a personal computer. The
Input/Output Format field, at the top of the page, lets you specify one of seven
interface formats:

Data Transfer is a proprietary interface that allows you to exchange data such as way-

points, routes, and track logs between GPSMAP units or a GARMIN PC kit.

No In/NMEA Out provides navigation information to a compatible NMEA device such

as an autopilot or radar. NMEA 0180, 0182, 0183 v.1.5 and 0183 v.2.0 output options

are available. See Appendix B for additional NMEA sentence information.

No In/No Out provides no interfacing capabilities.

RTCM In/NMEA Out allows DGPS beacon receiver input and also provides selectable

NMEA output.

RTCM In/No Out allows DGPS beacon receiver input, with no output capabilities.

NMEA In/No Out allows input from a NMEA compatible external device, such as a

Yeoman© Plotter, with no output capabilities.

NMEA In/NMEA Out provides the same input capabilities as NMEA IN, with selectable

NMEA output.

When the Data Transfer option is selected, youll need to specify what informa­tion to request or send to the remote unit through the Transfer Mode field. The
slave setting lets you control all data transfer from the external GPS receiver, or
PC while the other settings request or send specific data from the primary unit.

A. The data transfer options allow you to send

or receive almanac data, proximity way­points, routes, track log data, and waypoints
to another GARMIN GPS or PC Kit.

B. The NMEA In setting allows you to accept

NMEA data from a Yeoman plotter or other
compatible device.

63

A

B

SECTION

9

SETUP MENUS

Input & Output Setup

Using NMEA & DGPS Interface Settings

If you are using an NMEA interface format, the NMEA format must be specified
in the NMEA format field that will automatically appear when an NMEA option is
selected. The appropriate baud rate will be set automatically.

To select an NMEA format:

1. Select a NMEA IN/OUT format from the options page.

2. Highlight the NMEA Format field and press T.

3. Select a NMEA sentence format and press T.

4. The baud rate will automatically be set to the appropriate
speed. If you have selected an NMEA IN/OUT setting, you
must use the same NMEA format for both the input and output
device.

Tuning DGPS Stations

If the I/O Format is set to accept RTCM input/NMEA Output for connecting a
differential-ready GPS beacon receiver, you will need to tune a frequency in the
tuning field and select a bit rate. The default frequency will be 304.0 kHz, with a
bit rate of 100 bps, or the last DGPS frequency/bit rate selected.

To tune a DGPS frequency:

1. Select the RTCM In/NMEA Out format from the options page.

2. Highlight the beacon receiver frequency field and press T.

3. Enter the desired frequency and press T. If you are using an auto­matically-tuned DGPS receiver, you may enter 000.0 for the frequency.

4. Press

T

to select a bit rate. Five bit rates are available: 0 (used for

automatically-tuned DGPS receivers), 25, 50, 100 and 200 bps. Press

T

to confirm. The DGPS status, along with the signal-to-noise ratio

of the tuned station, will be displayed at the bottom of the page.

A. Select the desired format from the NMEA

field. The baud rate will automatically be set
to the appropriate speed.

B. After entering a DGPS frequency, set the bit

rate to the speed indicated on the USCG sta­tion chart. DGPS coverage, frequencies, and
bit rates are available from the Coast Guards
automated FAX service (703-313-5920).

64

AB

SECTION

9

SETUP MENUS

NMEA & DGPS Setup

Installing & Removing Micro G-chart Cartridges

The GARMIN GPSMAP 180 system uses Micro G-chart offshore or inland cartog­raphy to display digital charts on-screen. Micro G-chart cartridges are installed ti the
card slot located at the bottom right of the GPSMAP unit. Micro G-chart cartridges
may be installed or removed at any time, whether the unit is turned on or off.

To install a Micro G-chart cartridge:

1. Open the cartridge door on the GPSMAP 180 unit.

2. Insert the card (label facing front and Micro G-chart logo at top) into the slot.

3. Use your thumb to firmly push the cartridge into place. If your GPSMAP 180 is on, a confir­mation tone will sound when the cartridge has been properly installed and accepted.

4. Close the door (Note: The door will not close unless the Micro G-chart is fully inserted.).

If you insert a Micro G-chart cartridge and get a card format not recognized
message, try removing the card and reinserting it. If the card is still not recog­nized, contact the dealer you purchased it from for assistance. Micro G-chart
cartridges are not waterproof, should not be exposed to moisture or exces­sive static charges, and should be stored in the anti-static bag supplied with
the cartridge.

To remove a Micro G-chart cartridge:

1. Open the cartridge door.

2. Grasp the card at the bottom groove and pull firmly.

3. If your GPSMAP is on, a confirmation tone will sound when the Micro G-chart
cartridge has been removed.

65

SECTION

10

G-CHARTS

Installing &

Removing G-charts

Using Micro G-chart Cartography

Once a Micro G-chart cartridge has been inserted, the map coverage outlines
for the cartridge will automatically appear on-screen. Keep in mind that the dis­play will not automatically scroll to the map area or zoom to a level where you
can see the coverage outlines. If you do not immediately see the outlines, scroll
the cursor to the broad geographic area covered by the chart and zoom out to
another map scale.

The large outlined box shown is the main chart, which serves as the boundary
area for the entire cartridge. The small outlined box inside the main box are sub­charts, which provide more detailed coverage of the area indicated. To view the
detailed cartography of any subchart, scroll the cursor to the subchart outline and
use the

C

key to zoom in to smaller range scales. If the map outlines still do not
appear, check the Map Outlines setting on the map options page to make sure
they are set to appear (see page 26).

Whenever you zoom past the usable range of the current electronic chart,
the range field will display Ovr Zm or No Map. These warnings indicate
that although you may still have cartography, you should exercise extreme
caution using the data. See page 25 for more information on Overzoom and
No Map modes.

When a Micro G-chart cartridge is installed, the GPSMAP 180s system will
automatically use the best available chart for display. As you enter and exit various
subcharts, the system will automatically display the appropriate chart for the area
you are in. When you leave the area covered by the main map of a cartridge, the
GPSMAP 180 will default back to using the built-in 64 nm database if it is avail­able at the current scale.

If you are not seeing certain map items (navaids, depth contours, etc. on
offshore cartridges; highways, boat ramps, etc. on inland cartridges), check the
map configuration settings available from the map options page.

A. Map outlines for Micro G-chart offshore car-

tography.

B. Map outlines for Micro G-chart inland cartog-

raphy.

Note: The smaller boxes located within larger
boxes indicate areas of greater detail.

66

AB

SECTION

10

G-CHARTS

Using Micro G-chart

Cartography

Installing the GPSMAP 180

The GPSMAP 180 must be properly installed according to the following instruc­tions to get the best possible performance. The GPS antenna should be installed
first, followed by the display unit. To complete the installation, youll need the
appropriate fasteners for your installation, and a 1 x 14-thread marine antenna
mount available at most marine dealers.

Mounting the GPS 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 boats superstructure, a radome antenna, or
mast. Sailboat users should avoid mounting the antenna high on the mast to pre­vent inaccurate speed readings caused by excessive heeling. Most marine VHF and
loran antennas will not seriously degrade the GPS antennas reception. Never paint
the antenna or clean it with harsh solvents.

The GARMIN antenna screws directly onto any standard 1 x 14-thread anten­na mount. If you need to raise the antenna to avoid shading, try using a 1 x 14­thread extension mast available at most marine dealers.

To install the GPS antenna:

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 tie­wraps, escutcheon plates, and sealant to secure the cable along the route and through
any bulkhead or deck.

3. Once the GPSMAP unit has been installed, connect the cable to the antenna connector
on the back of the display unit. Make sure that you turn the antenna-connector locking
ring 1/4 turn clockwise to lock the cable into place.

67

SECTION

A

APPENDIX

Installation

It is possible to route the coaxial cable either through, or
outside the antenna mount. The BNC connector on the
coaxial cable can be removed, and the coaxial cable short­ned to ease installation. If the BNC connector is removed,
it must be replaced with a new BNC connector.

Mounting the GPSMAP 180 Unit

The GPSMAP 180s water-resistant case is suitable for mounting in exposed
locations or at the nav station. The unit comes with a mounting bracket and a
gimbal mount to allow surface or overhead mounting. When choosing a location
for the display unit, make sure you consider the following conditions:

 There should be at least a 3 (7.5 cm) clearance behind the case to allow connection of

the antenna and power/data cables.

 The unit should not be mounted where it is exposed to excessive temperatures for

extended periods (see page 71).

 You should provide adequate clearance for the Micro G-chart cartridge to slide out com-

pletely.

 The mounting surface should be heavy enough to support the unit and protect it from

excessive vibration and shock.

To surface mount the GPSMAP unit:

1. Place the gimbal mount in the desired location.

2. Mark and drill the four mounting holes for the fastener you are using.

3. Fasten the gimbal mount to the surface using the appropriate fasteners.

4. Insert the GPSMAP 180 into the gimbal mount. The mount is designed for a tight fit to
provide additional support when swiveling the unit.

5. Screw the two mounting knobs through the gimbal mount and into the mounting bracket.

6. Connect the power/data and antenna cables to the back of the unit, making sure the lock­ing rings are tightened on both connectors.

NOTE: The mounting bracket can be rotated 360°, allowing the GPSMAP 180 to
be mounted on a vertical surface or overhead.

68

SECTION

A

APPENDIX

Installation

To flush mount the GPSMAP 180

1. Remove the four M5 screws from the back of the unit and remove the mounting
bracket .

2. Using the mounting template provided in the box, determine the location where you
want to mount the unit and tape the template in place.

3. Using a hammer and center punch, mark the centers of the relief hole and mounting
screw holes.

4. Using a drill and 2.75 hole saw, cut the center relief hole from the panel. Drill the
four 0.25 screw holes, using a 1/4 drill bit.

5. From the front, place the GPSMAP 180 into the relief hole until the unit rests flush
against the mounting surface.

6. Secure the unit to the mounting surface using M5 screws. Note: For thick mounting
surfaces, insert the M5 screws directly thru the four drilled holes (figure 1). For thin
panels, place the mounting bracket on the back side of the panel for more support
(figure 2).

7. Attatch the power/data cable and antenna connectors.

69

SECTION

A

APPENDIX

Installation

Figure 1

Figure 2

Mounting template provided in box

Mounting Template

Connecting the Power/Data Cable

The power/data cable connects the GPSMAP 180 to a 10-40 volt DC system
and provides interface capabilities for connecting external devices, including an
external alarm. The color code in the diagram below indicates the appropriate
harness connections.

The following formats are supported for connection to up to 3 NMEA devices:

 NMEA 0180/NMEA 0182
 NMEA 0183 version 1.5

Approved sentences

GPBWC, GPGLL, GPRMB, GPRMC, GPXTE, GPVTG, GPWPL, GPBOD

Proprietary sentences PGRMM, PGRMZ (alt.), PSLIB (beacon receiver control input)

 NMEA 0183 version 2.0

Approved sentences

GPGGA, GPGLL, GPGSA, GPGSV, GPRMB, GPRMC, GPRTE, GPWPL,

GPBOD

Proprietary sentences PGRME (estimated error), PGRMM (map datum)

PGRMZ (altitude), PSLIB (beacon rec. control input)

DGPS corrections are accepted in RTCM-104 v. 2.0
format through the NMEA In (BROWN) harness lead. The
GARMIN GBR 21 is the recommended beacon receiver for
use with the GPSMAP system.Other receivers with the
correct RTCM format may be used, but may not correctly
display status or allow tuning control from the GPSMAP
unit.

70

SECTION

B

APPENDIX

Wiring &Specifications

PIN ASSIGNMENT

GPSMAP 180 Specifications

PHYSICAL

Case: Gasketed Construction
Size: 6.13H x 6.30W x 3.0D

(15.85 cm x 16 cm x 7.6 cm)
Weight: 1.75 Lbs (.794 Kg)
Temperature Range: 5º to 158ºF (-15º to 70ºC)

PERFORMANCE (GPSMAP 180)

Receiver: 12-channel PhaseTrac12
Acquisition Time: Approx. 15 seconds (warm)

Approx. 45 seconds (cold)

Approx. 5 minutes (AutoLocateTM)

Approx. 5 minutes (Search the sky)
Update Rate: 1/second, continuous
Position Accuracy: 1-5 meters (3-16 ft.)*

15 meters (49 ft.) RMS**
Velocity Accuracy: 0.1 knot RMS steady state, 90 knots max.
Dynamics: Performs to specification to 6g

POWER

Input: 10-40v DC
Usage: 10 watts max.

Specifications subject to change without notice.
* With optional GARMIN GBR 21 Beacon Receiver Input.
** Subject to accuracy degradation to 100m 2DRMS under the U.S. DOD-imposed Selective Availability Program.

71

SECTION

B

APPENDIX

Wiring &

Specifications

WARNING!

The temperature range for the GPSMAP 180 is -4
to +158ºF (-20 to 70ºC). Extended exposure to
temperatures exceeding this range (in storage or
operating conditions) may cause failure of the
LCD screen. This type of failure and related con­sequences are NOT covered by the manufactur­ers limited warranty.

Alarm ClockThe alarm clock has sounded.
Anchor Drag AlarmYou have drifted out of the specified distance range.
ApproachingYou are less than one minute away from reaching a destination waypoint at your

present speed over ground.

Arrival AtYou have arrived at the destination waypoint.
Cant Change An Active WaypointYou have attempted to change the active to or active

from waypoint. Clear the active route or GOTO before making your changes.
Card Format is Not RecognizedThe cartridge inserted is not readable by the GPSMAP system

and may be damaged. Reinsert the cartridge to make sure it is properly installed. If the cartridge
is still not recognized, call the Micro G-chart information line at 1-800-427-6460.

Cross-Track AlarmYou have exceeded the off-course distance specified in the CDI setup.
Data Transfer is CompleteThe receiver is finished uploading or downloading information to

the connected device.
Database Memory has FailedThe built-in 64 nm database has failed. See an authorized service

center for repair.
Degraded AccuracyThe accuracy of your GPSMAP system 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.

Max Calibration Is 5000mt (16,400 ft)You have exceeded the maximum possible map cali­bration.

Memory Battery Power is LowThe internal battery that stores waypoints, routes, and track
plots needs to be replaced. Take your unit to an authorized GARMIN service center for installa­tion of a new battery.

Need AltitudeYour GPSMAP system needs the altitude to maintain a position fix due to poor
satellite coverage. Enter your approximate altitude on the initialize position page.

Need to Select Init MethodThe GPSMAP 180 needs to be initialized to your present
position. See pages 1-2 for complete instructions on initialization.

No Differential GPS PositionNot enough data is being received to compute a DGPS
position.

The GPSMAP 180 uses an on-screen message
prompt to alert you to important information.
Whenever a message appears, press the

J

key to view the message.

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APPENDIX

Messages

Oscillator Needs AdjustmentThe GPSMAP 180 has detected excessive drift in
its internal oscillator, which may result in longer acquisition times. Take the
unit to an authorized GARMIN service center for adjustment.

Poor GPS CoverageThe GPSMAP 180 cannot acquire the necessary number
of satellites to compute a position.

Power Down and Re-initThe GPSMAP 180 cannot calculate a position due to
abnormal satellite conditions. Power down and verify the last position shown by
other means.

Proximity AlarmYou have entered the alarm radius for the proximity way­point indicated.

Proximity List FullYou have used all nine proximity waypoints.
Proximity Overlaps Another Prox WyptThe alarm radius specified overlaps

the area specified for another proximity waypoint.
RAM has FailedThe random access memory has failed and the unit is not

operable. Take your unit to an authorized GARMIN service center for repairs.
ROM has FailedThe units permanent memory has failed and the unit is not

operable. Take your unit to an authorized GARMIN service center for repairs.
Received Invalid Waypoint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

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

Route Already ExistsThe route number you are trying to copy to is already
used.

Route Does Not ExistThe route number you are trying to use or copy is not
defined.

Route is FullYou have attempted to add more than 30 waypoints to a route.
Route Memory is FullYou have attempted to create more than 20 routes.
Route Waypoint was DeletedA route waypoint entered does not exist in the

database and has been deleted from the route.

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Messages

RTCM Input has FailedDGPS data being received has been lost. You are no longer
receiving the beacon signal.

Searching the SkyThe GPSMAP 180 is searching the sky for almanac data.
Stored Data was LostAll waypoints, routes and almanac data has been lost due to

internal battery failure.
There is No RTCM InputThe beacon receiver is not properly connected or baud rates

do not match.

Timer Has ExpiredThe countdown timer has expired.
Track Memory is FullThe track memory is full and no additional track plot will be

recorded until the track memory has been cleared or set to wrap mode.

Wypt Already ExistsThe waypoint name youve entered already exists in memory.
Waypoint Memory is FullYou have used all 250 waypoints in the GPSMAP 180 system.

Adindan Adindan- Ethiopia, Mali,

Senegal, Sudan
Afgooye Afgooye- Somalia
AIN EL ABD 70 AIN EL ANBD 1970-

Bahrain Island, Saudi

Arabia
Anna 1 Ast 65 Anna 1 Astro 65- Cocos I.
ARC 1950 ARC 1950- Botswana,

Lesotho, Malawi,

Swaziland, Zaire, Zambia,

Zimbabwe
ARC 1960 Kenya, Tanzania
Ascnsn Isld 58 Ascension Island 58-

Ascension Island
Astro B4 Sorol Atoll Sorol Atoll- Tern Island
Astro Beacon E Astro Beacon E- Iwo Jima
Astro Dos 71/4 Astro Dos 71/4- St. Helena
Astr Stn 52 Astronomic Stn 52-

Marcus Island
Astrln Geod 66 Australian Geod 66-

Australia, Tasmania Island

Astrln Geod 84 Australian Geod 84-

Australia, Tasmania Island
Austria Austria
Bellevue (IGN) Efate and Erromango

Islands
Bermuda 1957 Bermuda 1957- Bermuda

Islands
Bogata Observ Bogata Obsrvatry-

Colombia
Campo Inchspe Campo Inchauspe-

Argentina
Canton Ast 66 Canton Astro 1966-

Phoenix Islands
Cape Cape- South Africa
Cape Canavrl Cape Canaveral- Florida,

Bahama Islands
Carthage Carthage- Tunisia
CH-1903 CH 1903- Switzerland
Chatham 1971 Chatham 1971- Chatham

Island (New Zealand)
Chua Astro Chua Astro- Paraguay

The GPSMAP 180s built-in worldwide data­base includes chart coverage down to 64 nm
(120 km) for the areas outlined above. Note that
the GPSMAP database is only valid to 68º15 of
latitude. The maximum cursor latitude is 85º05,
and the maximum waypoint latitude is
89º24.543 north or south.

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APPENDIX

Map Datums

Corrego Alegr Corrego Alegre- Brazil
Djakarta Djakarta (Batavia)- Sumatra

Island (Indonesia)

Dos 1968 Dos 1968- Gizo Island

(New Georgia Islands)
Easter Isld 67 Easter Island 1967
European 1950 European 1950- Austria,

Belgium, Denmark,

Finland, France, Germany,

Gibraltar, Greece, Italy,

Luxembourg, Netherlands,

Norway, Portugal, Spain,

Sweden, Switzerland
European 1979 European 1979- Austria,

Finland, Netherlands,

Norway, Spain, Sweden,

Switzerland
Finland Hayfrd Finland Hayford- Finland
Gandajika Base Gandajika Base- Republic

of Maldives
Geod Datm 49 Geodetic Datum 49-

New Zealand
Guam 1963 Guam 1963- Guam Island
Gux 1 Astro Guadalcanal Island
Hjorsey 1955 Hjorsey 1955- Iceland
Hong Kong 63 Hong Kong
Hu-Tzu-Shan Taiwan
Indian Bngldsh Indian- Bangladesh, India,

Nepal
Indian Thailand Indian- Thailand, Vietnam
Indonesia 74 Indonesia 74
Ireland 1965 Ireland 1965- Ireland
ISTS 073 Astro ISTS 073 ASTRO 69-

Diego Garcia
Johnston Island Johnston Island Kandawala

Kandawala- Sri Lanka

Kandawala Sri-Lanka
Kerguelen Islnd Kerguelen Island
Kertau 1948 West Malaysia, Singapore
L. C. 5 Astro Cayman Brac Island
Liberia 1964 Liberia 1964- Liberia
Luzon Mindanao Luzon- Mindanao Island
Luzon Philippine Luzon- Philippines

(excluding Mindanao Isl.)
Mahe 1971 Mahe 1971- Mahe Island
Marco Astro Marco Astro- Salvage Isl.
Massawa Massawa- Eritrea (Ethiopia)
Merchich Merchich- Morocco
Midway Ast 61 Midway Astro 61- Midway
Minna Minna- Nigeria
NAD27 Alaska North American 1927-

Alaska
NAD27 Bahamas North American 1927-

Bahamas (excluding San

Salvador Island)
NAD27 Canada North American 1927-

Canada and Newfoundland
NAD27 Canal Zone North Am. 1927- Canal

Zone
NAD27 Caribbean North American 1927-

Caribbean (Barbados,

Caicos Islands, Cuba,

Dom. Rep., Grd. Cayman,

Jamaica, Leeward and

Turks Islands)
NAD27 Central North American 1927-

Central America (Belize,

Costa Rica, El Salvador,

Guatemala, Honduras,

Nicaragua)
NAD27 CONUS North Am. 1927- Mean

Value (CONUS)

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APPENDIX

Map Datums

NAD27 Cuba North American 1927-

Cuba

NAD27 Greenland North American 1927-

Greenland (Hayes

Peninsula)
NAD27 Mexico N. American 1927- Mexico
NAD27 San Salvadr North American 1927- San

Salvador Island
NAD83 North American 1983-

Alaska, Canada, Central

America, CONUS, Mexico
Nahrwn Masirah llnd Nahrwn- Masirah Island

(Oman)
Nahrwn Saudi Arbia Nahrwn- Saudi Arabia
Nahrwn United Arab Nahrwn- United Arab

Emirates
Naparima BWI Naparima BWI- Trinidad

and Tobago
Obsrvtorio 66 Observatorio 1966- Corvo

and Flores Islands (Azores)
Old Egyptian Old Egyptian- Egypt
Old Hawaiian Old Hawaiian- Mean Value
Oman Oman- Oman
Ord Srvy Grt Britn Old Survey Grt Britn-

England, Isle of Man,

Scotland, Shetland Isl.,

Wales
Pico De Las Nieves Canary Islands
Potsdam Germany
Pitcairn Astro 67 Pitcairn Astro 67- Pitcairn
Prov So Amricn 56 Prov So Amricn 56-

Bolivia, Chile,Colombia,

Ecuador, Guyana, Peru,

Venezuela
Prov So Chilean 63 So Chilean 63- S. Chile
Puerto Rico Puerto Rico & Virgin Isl.

Qatar National Qatar National- Qatar
Qornoq Qornoq- South Greenland
Reunion Reunion- Mascarene Island
Rome 1940 Rome 1940- Sardinia Isl.
RT 90 Sweden
Santo (Dos) Santo (Dos)- Espirito Santo
Sao Braz Sao Braz- Sao Miguel,

Santa Maria Islands

Sapper Hill 43 Sapper Hill 1943- East

Falkland Island
Schwarzeck Schwarzeck- Namibia
South American 69 S. American 69- Argentina,

Bolivia, Brazil, Chile,

Colombia, Ecuador,

Guyana, Paraguay, Peru,

Venezuela, Trin/Tobago
South Asia South Asia- Singapore
Southeast Base Southeast Base- Porto

Santo and Madiera Islands
Southwest Base Southwest Base- Faial,

Graciosa, Pico, Sao Jorge

and Terceira Islands
Timbalai 1948 Timbalai 1948- Brunei and

E. Malaysia (Sarawak and

Sabah)
Tokyo Tokyo- Japan, Korea,

Okinawa
Tristan Astro 68 Tristan Astro 1968- Tristan

da Cunha
Viti Levu 1916 Viti Levu 1916- Viti Levu/

Fiji Islands
Wake-Eniwetok Wake-Eniwetok- Marshall
WGS 72 World Geodetic System 72
WGS 84 World Geodetic System 84
Zanderij Zanderij- Surinam

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APPENDIX

Map Datums

Almanac DataThe satellite constellation information (including location and health of
satellites) that is transmitted to your receiver from every GPS satellite. Almanac data must
be acquired before GPS navigation can begin.

Bearing (BRG)The compass direction from your position to a destination.

Course Over Ground (COG)

Direction of movement relative to a ground 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 bea-

cons 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 remaining to your destination at your present

speed.

GridA coordinate system that projects the earth on a flat surface, using square zones for
position measurements.

Ground Speed (SOG)The velocity you are traveling relative to a ground position.

LatitudeA 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.

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

Turn (TRN) The difference and direction in degrees between the bearing to your desti-

nation and your course over ground. The TRN value is used to indicate what direction, and
how many degrees, to turn to get back on course.

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APPENDIX

Glossary

Universal Time Coordinated (UTC) The time of day at the prime meridian (0º longi­tude) in Greenwich, England.

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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APPENDIX

Glossary

79

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F

APPENDIX

Time Offsets

The chart below gives an approximate UTC time offset for the various
longitudinal zones. Check with local charts for more detailed information. If you
are in daylight savings time, add one hour to the offset.

Longitudinal Zone Offset

W180.0º to W172.5º -12
W172.5º to W157.5º -11
W157.5º to W142.5º -10
W142.5º to W127.5º -9
W127.5º to W112.5º -8
W112.5º to W097.5º -7
W097.5º to W082.5º -6
W082.5º to W067.5º -5
W067.5º to W052.5º -4
W052.5º to W037.5º -3
W037.5º to W022.5º -2
W022.5º to W007.5º -1

W007.5º to E007.5º 0

E007.5º to E022.5º 1
E022.5º to E037.5º 2
E037.5º to E052.5º 3
E052.5º to E067.5º 4
E067.5º to E082.5º 5
E082.5º to E097.5º 6
E097.5º to E112.5º 7
E112.5º to E127.5º 8
E127.5º to E142.5º 9
E142.5º to E157.5º 10
E157.5º to E172.5º 11
E172.5º to E180.0º 12

80

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G

APPENDIX

Loran TD Position Format

When creating new waypoints using Loran TD coordinates you must set
the correct loran chain number and secondary stations in the Setup TD
field before storing the waypoint. After the waypoint is stored in unit
memory, it will always reference the loran chain number and secondary
stations currently selected in the Setup TD field. If you enter a different
loran chain number or change the secondary stations in the Setup TD
field, the active waypoint information will reflect those changes. Since
the GPSMAP 180 does not rely on the loran signal for navigation, it can
reference a different GRI chain and/or secondary stations and still navi­gate to the location stored in memory.

To change the Setup TD settings:

1. Highlight the Setup TD field and press T.

2. Select the field to change and press T.

3. Highlight the new setting and press T..

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APPENDIX

Index

A
Alarm Setup 62
Anchor Drag Alarm 62
Antenna Installation 67
Arrival Alarm 62
AutoLocate 1-2,18

B
Backlight Level 3
Beacon Receiver Setup 63-64
Bearing 77
Bearing/Distance Calculation 26
Built-in Map Coverage 2,74

C
Calibrations, Map 28
Cancelling Active GOTOs 44
Capabilities iii
Cautions ii
Clock Alarm 62
Configurations, Map 27-28
Contrast Setting 59
Countdown Timer 62
Course Deviation Indicator (CDI) 13
Crosstrack Error 77
Cursor Mode 23-24
Cursor Movement 8,24

D
Data Field Entry 10
Data Window 47
Date/Time Formats 59
Datums 74-76
Definitions 77-78

Desired Track (DTK) 77
Depth Contours 60
Depth Units 60
Dilution of Precision (DOP) 18
DGPS Setup 63-64
DGPS Status 18

E
Entering Initial Position 2,19
Estimated Position Error (EPE) 18
Estimated Time of Arrival (ETA) 29,77
Estimated Time Enroute (ETE) 29,77

F
Full Page Mapping 26

G
Micro G-chart Cartridges 65-66
GOTO Key 9,43-44
Ground Speed 77

H
Heading Selection 60

I
Initialization 1-2
Installation 67-70
Interface Options 63
Interface Setup 63-64
Interval, Track Storage 55

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APPENDIX

Index

K
Keypad Tone 59
Keypad Usage viii

L
Language Setup 59
Local Time Offset 59
Loran TD Position Format 80

M
Magnetic Variation 60
Main Menu 33
Man Overboard Function 45
Map Calibration 28
Map Configuration 27-28
Map Datum List 74-76
Map Datum Selection 61
Map Page 26-29
Map Scales 25
Marking a Position 6,34-35
Measuring Bearing & Distance 26
Submenu Selection 15
Message Descriptions 72-73
Messages, Viewing 1

N
Navigation Page 12-13,31-32
Navigation Setup 60-61
Navigation Units 60
NMEA Formats 70
NMEA Setup 63-64
No Map Mode 25

O
Offset, local time 59,79
Operation Mode Setup 58
Overzoom Mode 25

P
Packing List vi
Page Sequence 5
Physical Specifications 71
Point-to-Point Planning 56
Position Mode 23
Position Page 20-21
Position Format 60
Velocity Filters 61
Power Off 16
Power On 1
Proximity Alarm 41

R
Removing Micro G-chart Cartridges 65
Routes 47-54

Activating A Route 50
Active Route Page 14,53-54
Clearing 52
Copying 52
Creating 47
Deactivating 50,52,54
Editing By Text 49-50
Editing On Map 48
Modifying Route Waypoints 48-50
Modifying Routes 48-52
Moving Route Waypoints 48
Removing Route Waypoints 50
Reviewing Routes 48

Route Comments 51
Route Planning Mode 57
Stopping Route Navigation 14

S
Satellite Acquisition 2,17-18
Satellite Sky View 17
Signal Strength Bars 2,17
Simulator Mode 4
Simulator Tour 4-16
Status Bar 18
Status Page 17-19
Steering Guidance 13,30-32
Sunrise/Sunset Calculation 58
System Setup 58-59

T
Table of Contents vii
Time Offsets 58-59,79
Timer/Alarm Setup 62
Tone Selection 59
TracBack Function 45-46
Track Log 55
Track Memory 55
Track Plot Resolution 55
Track Recording 55
Trip Odometer 20-21
Turn (TRN) 32,77

U
Units of Measure 60
UTC time 59,79
UTM/UPS Coordinates 79

V
Velocity Filter 61
Velocity Made Good (VMG) 32,78

W
Waypoints 34-42

Active Waypoints 53
Creating 34-37
Deleting 39
Editing By Text 38
Editing On Map 39
Modifying 38-40
Moving Route Waypoints 48
Nearest Waypoints 40
Proximity Waypoints 41
Reference Waypoints 37
Removing Route Waypoints 50
Renaming 39
Reviewing 38
Submenus 40
Waypoint List 42

Wiring Installation 70

83

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H

APPENDIX

Index

© 1999 GARMIN Corporation

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

GARMIN (Europe) LTD Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey SO51 9AQ UK

GARMIN (Asia) Corp. 4th Fl., No 1, Lane 45, Pao-Hsing Road, Hsin Tien, Taiwan R.O.C.

Part Number 190-00157-10 Rev. A