Garmin GPS 120 User Manual

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GPS 120

OWNER’S MANUAL

Software Version 2.00 or above

GARMIN/Europe LTD Roben House, Station Approach Romsey, Hampshire UK S051 8DU

in any form or by any means, electronic or manual, and recording, for any purpose without the express GARMIN.

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

May 1995

Part #190-00100AK) Rev. A

Printed in Taiwan.

reproduced or transmitted including photocopying written permission of

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CAUTION

The GPS system is operated by the government of the United States, which is solely responsi ble for its accuracy and maintenance. The system is subjea to changes which could affea the accuracy and performance of all GPS equipment. Although the GPS 120 is a precision elearonic

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

become unsafe.

Use the GPS 120 at your own risk. To reduce the risk of unsafe operation, carefully revieiv and understand all aspects of this Owner’s Manual and thorou^ly praaice operation using the simu

lator mode prior to xiuai use. When in actual use, carefully compare mdicattons from the GPS 120 to all available navigation sources including the information from other NAVAlDs, visual

sightings, chans, etc. For safety, always resolve any discrepancies before continuing nav^ation.

NOTE: This device complies with Pan 15 of the FCC limits for Class B digital devices. 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 interletence to other equipment, which can be determined by turning the equipment off and on, the user is encouraged to try and correct the interference by relocating the equipment or connecting the equipment to a different circuit than the affected equipment. Consult an auihotiaed dealer or other qualified service technician tor additional help if these remedies do not correct the problem. Operation is subject to the follovring conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interfer ence received, including interference that may cause undtslred operation. The GPS 120 does not contain any user-serviceable (>ans. Repairs should only be made by an authorieed GARMIN ser vice center. Unauthorized repairs or modifications could void your wananty and your authority to operate this device under Part 15 regulations.

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Preface

Welcome to the easiest-to-use fixed-mount GPS navigator on the water! The GPS 120 represents GARMIN’s continuing commitment to provide mariners with quality navigation information in a versatile, accurate and userfriendly design you’ll enjoy for years to come.

To get the most of your new GPS unit, it is important that you take the time to read through this oYmerk manual to understand the operating features of the GPS 120. The manual is organized into two sections for your convenience:

Section One introduces you to the basic features of the unit and provides a

quick-start orientation to the GPS 120. It has been designed to acquaint you with the unit and provide a basic working knowledge necessary to use the unit in typical conditions.

Section Two provides a detailed reference to the advanced features and

operations of the GPS 120 in a topical format. This allows you to concentrate on a specific topic quickly, without reading through entire sections of text that you may not need.

Thanks for choosing the GARMIN GPS 120. If you have any questions or comments regarding the use of the GPS 120, our Product Support staff is available to serve you at 1-800-800-1020 or 913-599-1515. You can also reach our Product Suppon staff by FAX at 913-599-2377.

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GPS 120 Capabilities

Designed for easy operation, the GARMIN GPS 120 offers powerful features

that make marine navigation as simple and accurate as possible:

Precision Performance

• MultiTracS™ receiver tracks and uses up to 8 satellites simultaneously for fast, accurate positioning

• Differential-Ready— just add the optional GBR 21 beacon receiver for 5-10 meter accuracy

• Fully gasketed, dry nitrogen-filled case for all-weather use

Advanced Navigating and Plotting

• 250 alphanumeric waypoints

• List of 9 neatest waypoints

• 20 reversible routes of 30 waypoints each

• MOB mode with bearing and distance to mark

• Moving Map Plotting with scales from ,2 to 320 miles (0.5 to 600 km)

• Graphic pages for Satellite Status, Position, Plotting and GDI Navigation

• Active graphic display of cardinal heading

• Alarms for anchor drag, crossttack error and arrival

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Before getting started with your new GPS receiver, check to see that your GARMIN GPS 120 package includes the following items. If you are missing any parts, please see your dealer immediately

Standard Package;

• GPS 120 Receiver with Remote GPS Antenna

• GPS 120 Owner’s Manual

• Quick Reference Card

• Warranty Registration Card

• Mounting Bracket

• Power/Data Cable

Optional Accessories:

• PC Kit

• Swivel Mount Bracket

See your local GARMIN dealer for optional accessories.

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Table of Contents

SEC T IO N O N E G e tt in g S t a rt ed

GPS Overview................................................................................................................. 2

Basic Definitions

Keypad Usage..................................................................................................................... 4

Operation Flowchart........................................................................................................... 5

Power On/Status and Position......................................................................................... 6-7

Page Sequence................................................................................................................... 8

Harking a Position........................................................................................................... 9

Entering a Waypoint

GOTO & Steering Guidance...................................................................................... 11-12

Power Off..................................................................................................................... .....13

SEC T IO N T W O R e fe r en c e

Satellite Status Page.......................................................................................................15-16

Position Page Options

Creating and Using Waypoints.................................................................................. 18-24

GOTOs and MOB Mode........................................................................................... 25-26

Creating and Using Routes......................................................................................... 27-32

Moving Map Plotting.................................................................................................... 33-36

Menu Page and Auxiliary Functions.............................................................................37-47

Simulator Mode............................................................................................................... 48

Appendix A—Installation.............................................................................................49-51

Appendix B—Wiring & Interfaces.....................................................................................52

Appendix C—Glossary..................................................................................................53-54

Appendix D—Messages.................................................................................................. 55

Appendix E—Time Offset..................................................................................................56

Appendix F—Map Datums Appendix G—Maintenance & Specifications

Appendix H—Index.................................................................................................... 61-62

................................................................................................................

.........................................

...

....................................................................................................

....

........................................................................... 58-59

........

.........................................................

.................................................................

...60

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What is GPS?

GPS (Global Positioning System) is a satellite-based navigation system developed by the U. S. Department of Defense to provide a consistent, accurate method of simplifying navigation. Originally designed for military applications, it also provides commercial and recreational users with 24-hour, worldwide navigation coverage with accuracy to 15 meters (49 feet).

How Docs GPS Work?

GPS navigation uses satellite ran^g to determine your position in relation to a set of satellites orbiting the earth. The GPS constellation is made up of a set of satellites, which continuously send radio signals containing precise position and time information for each satellite back to earth.

By knowing the position of any 3 or 4 of these satellites and calculating various time differences between the transmitted signals, your GPS receiver can determine its present position anywhere on earth. And once you're under way, your GPS continuously updates your position and provides speed and track information.

What are the Advantages of GPS Navigation?

For centuries, mariners have been searching for an accurate method of travelling the world’s waterways. From celestial navigating to loran and SaiNav, each system has had its problems with weather, range and reliability,

GPS takes navigation to a higher level by providing accurate position and course information, anywhere in the world, regardless of the weather or your proximity to land. The accuracy and coverage of GPS navigation can help make your boating safer, smarter and more efficient wherever you may travel

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The GPS 120 is a powerful navigation tool that can guide you anywhere in

the world. To better understand its operation and capabilities, it may be help ful to review the basic terms and concepts briefly explained below,

Navigatian is the process of traveling from one place to another and knowing

where you are in relation to your desired course.

Position is an exact, unique location based on a geographic coordinate system.

Marine navigation is based on the latitude/lon^iude coordinate system.

Meridians of longitude are a set of imaginary circles around the earth that pass

through the north and south poles. Longitude describes position in terms of how

many degrees it is east or west of the Prime Meridian fO" longitude).

Parallcb oflatitude are anotherset of imaginary circles that ate perpendicular

to the earth’s polar axis. Latitude describes position in terms of how many

degrees it is north or south of the equator (0” latitude).

Basic

A waypoint marks an exact position fix so it can be recalled for future use. The

GPS 120 lets you mark waypoints electronically, without physical landmarks.

Bearing is a compass direction to a particular destination (waypoint) from your

present position.

Track is a compass direction representing your course over ground.

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The GPS 120’s two*speed thumbkey allows convenient, one-handed entry of information. Press on a particular arrow key once to scroll through data optiotrs slowly, press and hold an arrow key for faster scrolling.

• Use the up and down arrow keys to select alphanumerical characters and menu choices and to move the field highlight from field to field.

> W 'Use the left and right arrow keys to move the selected character field and

' ^ to move the field highlight from field to field.

The GOTO key changes the display to the Navigation Page with the waypoint field highlighted.

The POWER key turns the unit on and off and adjusts screen backlighting. To turn the unit off, press and hold the POWER key for 3 seconds.

I The QUIT key returns you to a previous page, or clears data entry, restoring

a data field’s previous value. The PAGE key scrolls through main data pages in sequence and returns the

display from a submenu page to the previous page viewed. It also displays the message screen when a message alert appears.

The MARK key captures a position and displays the Mark Position Page.

The ENTER key confirms data entry and on-screen responses. The ENTER key also activates highlighted fields to allow data entry.

The MOB key performs the man overboard function. This marks the current position, and always displays your current range and bearing from this posi tion. The MOB function is listed in detail on page 25.

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POWER ON

POWER OFF

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«ими миг

MARK POSITION

toih*

Гигмм off I» 3

бятт QPS12C

Hold hey/or J seconds

MAIN PAGE SEQUENCE

Press (lie РЛСЕ key ю scroll ill rough poges и sequence.

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tftK« '^ iWI

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iLtIT«K

t 74^

tliC

Press ihi $[Л7 fciy to scroll through pages in reverse erder.

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VIEW MESSAGES

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«meHsiELLS JtEfi

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Page 14

Welcome to the

QPS1ZO

SOFTUARE UERZ.DD

tOFVFtlCHT 199S

CRRHIII CORP

Welcome Page

HESSMES

Stored Data

uas Lost

Searching the

Sky

The Gelling Slaned Tour assumes you have cor rectly installed the GPS 120 in your vessel accord ing to the instructions in Appendix A, and have not changed any of the factory settings (units of mea sure, selectable fields, etc ). If you have changed any of the default settings, ther pictures and descrip tions used may not match your unit’s configuration.

The first time you power up your new GPS 120 is an important step in getting the best possible GPS performance. The receiver must be given an oppor tunity to collect satellite almanac data and establish its present position. This process can take 7.5-15 minutes, and is only necessary for first time opera tion or after memory loss.

You’re now ready to power up and discover the world of GARMIN GPS navigation.

1. Pressfite^gkevlirmlvto turn the uniton.

The Welcome Page will be displayed while the unit conducts a self test. Once testing is complete, the Welcome Page will be replaced by the Status Page and the unit will begin acquiring satellite data.

Whenever the GPS 120 has something it needs to tell you, a message indicator box will flash on screen. To view a GPS 120 message:

1. Press to view the message.

FRESS RAGE

During^rsi iime use,

tfie GPS

120

wtil 'seureft

ihe sfey’ to eslof)lisii

present position. You

may

speed up the int-

tializutioR process

tmrtuaUy

entering jour

position coordinutes

described on page ] 7,

your

in this case, you will see a ‘Stored Data was Lost, Searching the Sky’ message. This informs you that the unit is beginning to acquire satellite information to calculate your present position.

2. Press to return to the previous screen.

If you’re new to GPS navigation, be sure to review the GPS Overview and Basic Navigation Terms on pages 2 and 3 while the unit collects data.

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The GPS 120’s Status Page provides a visual refer ence of satellite acquisition and position. As the receiver locks onto satellites, a signal strength bar will appear for each satellite in view, with the appro priate satellite number (1-32) underneath each bar.

The satellite sky view shows a bird’s eye view of the position of each satellite relative to the unit’s last known position. The outer circle represents the horizon (north up); the inner circle 45” above the horizon; and the center point directly overhead.

Once sufficient information is received, the Status Page will be replaced with the Position Page,

The Position Page shows you where you are, what direction you’re heading and how fast you are going. The heading display at the top of the page indicates your cardinal heading (only while you’re moving) with the track and speed indicated below.

11II11111111II1111III

Grophitat

HcaJinj

Display

3D »5 H DIS D3

TliA«K

1^000^

Speid

8.0“t

POSITION

Track

N 38^53.547'

W094”^I0.477'

■ Position

ALTITUDE

Ahitude

Vl237fT i 74^

TIHE

10:^2:00

Timt

The rest of the page shows your current position in three dimensions: latitude, longitude and alti tude. The GPS 120 uses this basic information to mark exact positions as waypoints, which help guide you from one place to another

The numbers to the right of the altitude field give a relative range for the accuracy of the altitude dis played. GPS altitude without differential correction is not as accurate as horizontal position, and fluctuations in this value are normal.

The Status Page's

view will help

<kt ermine ij a

signal is being

by an

abstruciion. As

satellites are

to, the sky

tors will change/rom a

reverse-video

fe.g. satellites 3 6*25)

a standard

(e,g, satellites J86* H).

sfey

you

sorellite

blocked

locked on

view indica

highlight

display

Page 16

Getting to know your new GPS requires only a few short keystrokes. Try scrolling through the main pages of the GPS 120:

1, Press the key to scroll through the five main

pages in sequence.

2. Press the key to scroll through pages In the opposite direction.

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sra^e.esb

3BT 8.№

PMiriM

N 35*53,54T

W 594*45,47T

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tzm t 7Ah

10:42«5

----

TUt SP»

mFE

0,tL,

KffHCf «rmnfiHiw

nvMmq itnr

MjHf snv Mr Jtltr

___

Ux (he Page and Quii keys io cmtinuoudv scroil through ifee main pages in either direitm.

Z00n:[ 1* PflNi

HOKE

PKG__DST

TRKa43'SPD Z.4KT

The

map page also displays your currenj speed and coune, as well os the bearing and distance to a selected destination at the bot tom of the page.

Map

Page

____

Hit

Since we’ve already gone throught the Status and Position Pages, let’s move on to a brief overview of the Map, Navigation and Menu pages.

The Map Page provides a moving map track plot ter which shows your present position {the diamond in the center), a visual track log of your past move ment and nearby waypoints. The Map Page also allows you to zoom and pn simultaneously to other areas, mark new waypoints and quickly review on screen waypoints. Instructions on zooming, pan ning, and using the map pge begin on page 34.

The Nav Page provides all of the necessary infor mation to navigate to a destination. Bearing, track, speed, distance, estimated time enroute (ETE) and velocity made good are all displayed on the Nav

Page. This information is accompanied by a graphi

cal steering arrow and highway which you may use

to navigate to your destination.

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The Menu Page contains prompts to perform many different functions on the GPS 120, including waypoints, routes, alarms, and all setup operations.

Now that you are familiar with the basic pages of the GPS 120, let’s mark your current position as a waypoint for future reference. Before you mark your position, make sure the GPS 120 has acquired satellite information, and is displaying your current position and navigation information.

HARK POSITION

Uct^point:

1. Press the key to capture and hold your present position.

The Mark Position Page will appear, showing the captured position and a default 3-digit waypoint name. Let’s change the default name to something that’s a little more meaningful.

1. Press the key twice lor once) to move the field highlight from the 'save' field to the name field.

2. Press the Ql key to begin entry of your waypoint name (Press i to clear pre-existing name).

3. Press and hold die ^ key to scroll through the alphabet until the letter 'H' appears.

4. Press the ^ key once to move the character high light to the next character space.

5. Repeat steps 3 and 4 until the word 'HOME' is displayed.

6. Press to complete entry of the name.

7. Press the key once to return the field highlight to the'save'field.

OBI

N 38*53.5^7'

W084N0.-i|77'

Rdd io route

number:

HARK POSITIOH

Uaypoint:

N 38*53.547' W09‘i*40.‘177'

Add to route

number:

HARK POSITIOH

lifciypoiht:

___

SAUE4

8. Press the m key to confirm that you want to save the position as a waypoint named 'HOME'.

The Mark Position Page will be replaced by the

page displayed prior to pressing the ^B

HOME

N 38*53.547' W094*40.477'

Add to route

number:

___

Page 18

Wtnpoiiil

Now that you’ve marked your present position, it’s time to enter a new waypoint manually so we may navigate toward it. This will allow you to go directly to this new destination quickly and easily. We can do this one of two ways; either by exaa position coordi nates, or by referencing a known location.

1. Press or BButitil the Menu Page is displayed.

HENU

KEMEST WTS UñVrUHT LIST

UiiVf-OIMT

ROUTES DIS AND SUN OALO HESSAGES OF^EAATIDH SETUP

HAUIGATIOH SETUP ALARMS SETUP TAAOK LOG SETUP HAP SETUP

lyO

SETUP

Menu Pu^e

UAVPOIHT

naheiREEF

N 2^*53.781'

W 045*37.2®

REF!

__________

REARING DISTANOE

000* 0.00R.

REHAKE4 DELETED DOÑEO

A new ivoypoini’s

pusilion can i»e

maruiatly

coordinates,

distance

from another waypoint,

entering a distance

and

hearingfrom your

present position.

defined

entering

entering a

and

bearing

For this example, you’ll need to know either a waypoint^ position coordinates, or its distance and bearing from another known position (e g. ‘HOME’),

1. Press the key to highlightthe 'Waypoinf field and press IB.

2. Press the ▼ key to highlightthe name field.

3. Press 0 to begin entry of the waypoint name.

4. Usethe ▲and 'Tkeystoenteryourwaypoint name, using the i and ^ keys to move to the next character position.

5. Press to confirm the waypoint name. The position field will now become highlighted, with the receivers last known position shown.

6. Press B to begin entry of the position, or use the 'w' arrow to highlight the 'reh' field to create the waypoint a certain bearing and distance from your current position.

7. Use the Aand '▼'keys to enter your exact posi tion or die reference waypoint name (leave blank to use your current positionl.

8. If entering a range and distance feature, use

and to enter the bearing and distance. Press

SI to calculate a newlaVlon position.

9. Press the key to confirm and save your coor

dinates. The default waypoint comment (UTC date and time of creation) will appear and the highlight will move to the 'done field.

10. Press the key to return to the Menu Page.

Page 19

Now that we’ve seen how to create a new way-

point, lets navigate to it (rementber, we’ll be navi gating a direct course line to your destination, so make sure there isn’t an obstruction in your way):

1.Press the! I key.

2. The Navigation Page will appear with the waypointfield highlighted. Press the -^or '^keys to scroll through the available waypoints until the waypoint you just created is displayed.

3. Press the key to confirm that you want to nawgate to the displayed waypoint

The GPS 120 will now guide you to the waypoint. As you begin moving, the Navigation Page will display nav data and graphic steering guid ance, The bearing and distance to waypoint, with your current track and speed are displayed at the top of the screen, with your estimated time enroute (ETE) and velocity made good (VMG, or the rate you are closing in on your destination) at the bottom.

TRK SPtt

O.ES

ETE

GOTO

StcciiHg

Guidtniœ

35B" "èTS^

ISEE F__

o tt

,wm

D.ES

UHG

Bearing (a

Wa)((wint

Preseti!

Track

Course

Deviation

Scale

Estimated

Time

Enrome

As you head towards your destination, the mid dle section of the screen provides visual guidance to your waypoint on a moving graphic ‘highway’. The moving arrow just below the course deviation scale always points to your selected waypoint (REEF) relative to the direction you are moving.

Distance to

Waypoint

Speed

Over

Ground

Grapiiie

Higliway

Vetociiy

Mode Good

The moving highway provides a visual per-

specliveoj the

and

distance

direction to

waypoint. The highway will always

move to ‘point’

in the general direction

destination, with

of your

(he relative

indicated of

the outside lines

the

highway,

distance

by the angle

Page 20

Giiidiui«’

Bsr 3.^8».

070^ 19.2^

TRK SPD

REEF

D.Ei 4 a.19

ETE y una

11:30 18.^

In this aatnple,

off

the desired

the

left by 0.19

To get hath on course, steer right to center the position diamond on the

highway.

№RG UST 09r 3.36^ 040^ 19.2^

TRK SP-P

D.ES

ETE^ una

16:33

If you get too far off course, a message box

will appear to indicate which

course you

steer

to gel

course most

DST

you are

course to

ti.m.

REEF

should

bach

ejficientig.

13.3

Destination

Waypoint

Desired

Trach

Line

Position

Indicator

Horiiontol Finish Line

Pointer to Wajipoini

The line down the middle of the graphic high way represents your desired track (a straight line between the position you started from to the selected waypoint), with your present position indicated hy the diamond in the center of the course devition scale. The arrow pointer below the highway serves as a relative bearing pointer to your destination waypoint.

As you navigate toward a waypoint, the high way will actually move, indicating the direction you’re off course, relative to the position diamond on the GDI scale. To keep your vessel on the desired course, simply steer toward the center of the hi^way.

If you do get off the desired course by more than l/5th of the selected GDI range, the exact distance you are off course will be displayed where the GDI scale setting normally appears (see the example at left). As you approach a waypoint, a horizontal ‘finish line’ will move toward the bot tom of the highway. When the finish line reaches the GDI scale, you’ve arrived at your destination.

Page 21

You’ve now gone through the basic operation of your new GPS and probably know a little more than you think about how it works. We encourage you to experiment with the GPS 120 until it becomes an extension of your own marine navigation skills.

The GPS 120 also features a Simulator mode to help you practice navigation, mark and save waypoints, and to create and travel routes.

If you encounter any problems using the unit or want to take advantage of the GPS 120’s advanced features, refer to the reference section of this manual.

To turn the GPS 120 off:

1. Press and hold the key for 3 seconds.

Thank you for choosing the GARMIN GPS 120. We hope that it will be a valuable navigation tool for you, wherever your course may take you.

GPS IZO

SOFTUARC VEke.DD

CARHIH CGRR

The power ojf count-

down

appears right on screen while you hold fhi power button. This counItWn helps pre

vent acddental shutoff

and

toss

of data.

Page 22

Page 23

5biittí

Signal

Stringili

fndííalors

HofízonlíiJ

/>,ctutaq/

SalílliteSty

Vifw

SaUÜiU Not

Currently

Tracked

Soíeíliíí lumbers

(i-32)

The GPS 120 Status Page displays the status of various receiver funrtions. The status information will help you understand what the GPS is doing at any given time.

The sky view and signal strength bars give you an indication of what satellites are visible to the receiver, whether or not they are being tracked, and the signal quality. When a satellite is visible but not being tracked, the signal strength bar will remain blank and the sky view indicator will remain highlighted in reverse video.

Receiver status is indiated at the top left of the screen, with the current horizontal accuracy (in feet or meters) at the top right. The status will show one of the following conditions:

Acquiring Satellites is the first status you’ll see

in normal operation. The GPS 120 is looking for

satellites to track based on its last known position.

2D Navigation status indicates that at least

three satellites with good geometry have been

locked onto and a 2 dimensional position fix

(latitude and longitude) is being calculated. '2D

DifT will appear when you are receiving DGPS

corrections in 2D mode.

Hie satellite sliy view ilwws a bird’s eye view ifie peisiiion relative lost feitowfi position.

Hie outer circle represents ifie fiorizon (north up); the inner circle horizon;

point a position directly

over your head. Use

shy view to help determine

there ore obstructions shading your reception satellite signals.

Ifyouarelosingcover-

age or having trouble

acquiring a

(he shy view and signal strength bars to guide you ¡station

of each

to the

receiver’s

45“ above the

and

the center

position, use

towards a better

for GPS reception

satellite

the

Page 24

3D Navigation indicates that at least bur satel

lites with good geometry have been locked onto and your position is now being calculated in lat itude, longitude and altitude, ‘3D Dili’will appear when you are receiving DGPS corrections in 3D mode.

Searching the Shy indicates that the GPS 120

is collecting new almanac data or AutoLocate™ mode has been selected {see page 38). This process can take 7.5 to 15 minutes.

Poor GPS Coverage indicates that the receiver

is no longer tracking enough satellites to provide a 2D or 3D position fix.

Simulator indicates that the receiver is in

simulator mode.

Not Usable indicates that the receiver is

unusable, possibly due to incorrect initialization or abnormal satellite conditions. Turn the unit off and back on.

On the right side of the screen, just below the

horizontal accuracy field is the screen backlight indicator. When backlighting is on, a bulb icon will appear. To adjust the screen backlighting:

1. Momentarily press the key to toggle through low, medium, high and off.

2. To adjust the duration of screen backlighting,

refer to the operation setup section (page 39).

The GPS 120 uses the latesttechnology in ElectroLuminescent (EU tiacklight to provide the most sistent backlighting possible. The typical life of the EL backlight at full brightness is 4000 to SOOO hours of

continuous use.

possible, or not using bacldight when possible wll

extend the life

of the

Using the lowest backlight level

backlighting by many years

eon-

Page 25

The GPS 120 Position Page displays your current position^ latitude, longitude, altitude and time numerically. It also displays your track (compass direction) and speed when you’re moving.

The Position Page also lets you enter a position’s btitude and longitude manually. During satellite

acquisition, the position displayed is the last com

puted position stored in memory If the receiver’s position has moved several hundred miles with the power off or memory has been lost due to battery failure, the unit may take 7 1/2 to 15 minutes to

acquire satellite data.

To speed up the acquisition process, you can enter the

coordinates of your present positioa Most maps and chans show the latitude and Icmgitude of major cities.

(.Pressthe

highlighted.

Press 0 to begin entry of your position.

3 Use the ^ and ^ arrow keys to selectthe

character position you want to edit

4. Use the akand '▼'arrowkeys to selectthe value for each field. All fields must have a value.

5. Press the key to confirm your changes.

key until the position field is

|ll M11■111II1111II11

■ 34S ■ TRACK

POSITION

riTTTTJTTTTn

N US D3

■r'uixluiiil

SPEED

e.e’v

N 38*53.547‘

1^09-1*48. W

ALTITUDE

108 l^T i 7^P»

TIRE

15:-47:32

The

utiii

of measure for

speed, position anci alti tude

are all

user-selec

table. To change the

default

settings Jor these

jields,

refer to

the naviga

tion setup instructions on

paged!.

When the GPS 120 is acquiring satellites or navi gating in the 2D mode, the last known altitude will be used to compute your position. If the altitude shown is off by several hundred feet, you may enter a corrected altitude manually for greater accuracy.

(.Pressthe

highlighted.

Press to begin entry of your altitude.

3. Use the ▲ and ▼keys to enter a value in each character field, using the ^ and^ keys

to move to the next character position.

4. Press the key to confirm the altitude.

key until the altitude field is

11111] III I ii 11111 ■ 111|

ID 34S H ois d:

TRACK4SPEED

0.0^

POSITION

N 38*53.850

W094*-18.478'

ALTITUDE

108i

15:<18:11

74^r

TIKE

Page 26

Mitiliiiijj

and

N'timijig

Wiijpoittfs

HftRK POSITMH

Wtiypoin-t:

001

N 38*53.547' W094*40.477*

Add to route

number:

___

Knowing your presenL posiiion is only pan of

any navigation equation. You also need to keep

track of where you’ve been and where you are

going. Waypoints serve as electronic markers that

let you keep track of starting points, destinations, navaids and any other important position.

The GPS 120 allows you to mark, store and use up to 250 waypoints. A waypoint position can be entered by taking an instant electronic fix or by manually entering a coordinate or range and bear ing in reference to an existing waypoint. To mark

your present position {make sure you have

acquired a satellite position) as a waypoint;

1. Press the gQ key to capture your position.

The Mark Position Page appears, showing the captured position and a default 3-digit waypoint name. To change the default position name :

WORK POSITIOW

UuypoiRt:

IS.

N 33*53.547' W 094*40.477'

Add to route

number:

HRRK FOSniOM

WayDoint:

N 38*53.547' W094*40.477'

Add to route

number:

___

SftUEi

HOME

___

1. Press the ^ key twice to move the field high light from the 'save’ field to the name held.

Press the Ql key to begin entry of your waypoint name (Press 4 to clear a pre-existing name),

3. Use die ▲ and 'r keys to enter a value in the appropriate character held, using the 4 and ^ keys to move to each character position.

Press confirm the waypoint name. The

field highlight will move to the 'route' field.

If you’d like to add this waypoint to a route:

1. Press the Q key.

2. Use the ^ or ▼ keys to enter a route number.

3. Press the ^ confirm the route number.

4. Press the |Q key again to save the waypoint.

If you do not want to add this waypoint to a route:

1. Move the held highlight to the 'save' held and press the gn key.

Page 27

The GPS 120 has three waypoint submenu pages that let you manage a large number of waypoints quickly and efficiently. The nearest waypoints, way point list and waypoint definition pages are

accessed through the Menu Page. To select a waypoint submenu page:

1.Pressthe^9or0

Menu Page appears.

2. Use the .a. and '▼’keystohighlightthewaypoint submenu page you want to use.

3. Press te display the submenu page.

4. To return to the Menu Page, press the key.

I key until the

The nearest waypoints page shows the nine near est waypoints that are within 100 nautical miles of your present position, with the bearing and range noted for each waypoint. During an emergency or foul weather, the nearest waypoints page can give you a quick reference to the closest points of safety in your area.

The nearest waypoints page will also let you GO TO a selected waypoint or retrieve a waypoint definition page right from the list:

1. Use the ▲and keys to highlight a listed waypoint

2. To select a highlighted nearest waypoint as a destination, press the key.

NEHUEST HF-TS

UftVfOIKT LIST

ItikVPOIHT

iteuTEs

DIS

AHP

SUN OAL«

HESSACES

ePEAATlOK SETUP HAUICATieil SETUP ALARHS SETUP TRACK LOG SETUP HAP SETUP

SETUP

1/0

NEAREST UPTS UAVPHT BRG PIS DOCK

air D.OD

FUEL 159*5.5U DIUE as9*la.B HAP ana*

IB.G

FISH a79‘aa.9

------

—

3. Once the Nawgation Page appears, press the key to confirm the selected waypoint as

yourdestinafion.

To review the waypoint definition page of a

selected waypoint from the list;

1. Press the I I key.

To return to the nearest waypoint page {when

the ‘done’ field is highlighted):

1. Press the I I key.

NEAREST UPTS

UAVPHT PRG PIS

unriBi

air

n.DD

FUEL 199*5.9D PIUE a99*

la.B

RAP aaa*19.9 FISH aT9*

— —

aa.9

Page 28

Wiiypoiiii Li.si

HftVPOIHT LIST

2^3 EHPTV T USED

DIVE

DOCK FISH FUEL

The waypoint list page provides you with a complete list of all waypoints currently stored in the GPS 120. The total number of used and free

waypoints is indicated above the waypoint list.

From the waypoint list page, you can GOTO a selected waypoint, retrieve a waypoint definition page or delete all user-defined waypoints.

1. Use the aL,and ▼ keys to scroll through the list and select a waypoint

Z To select a highlighted waypoint as a destina

tion, press the key.

HOME MAP

DELETE ALL HF-TS-?

UAVUIIHT LIST

242 EHPTV 7 USEft

DIVE DOCK FISH FUEL GARMIN HOME MAP

DELETE tiLL

DELETE ALL HPTS

U f T S /

HARKING!

dll user defined

uidviDoints ctnd

routes uill be

deleted

Are you sure

or No?

3. Once the Navigation Page appears, press the

key to confirm the selected waypoint as

yoor destination.

To review the waypoint definition page of a

selected waypoint from the list:

1. Press the I

I key.

To return to the waypoint list page {when the

'done’ field highlighted):

1. Press the key.

To delete all user defined waypoints;

1. Use the .A. or keys to move the cursor high light to the 'delete all waypoints' field.

2. Press the

I key.

A warning page will appear, asking if you are sure you want to delete all user-defined waypoints and routes. If you want to continue and delete:

1. Press the ^ key to highlight the 7es' field.

2. Press them key.

3. Press the key to return to the Menu Page.

If you do not want to delete all vraypoints:

1. Press with the 'no' field highlighted.

Page 29

The last of the three waypoint management pages is the waypoint definition page. This page lets you create new waypoints manually, as well as review and edit existing waypoints.

Wi^poinl

Nom e

Com m ent

Bdd

Rename

and

Delete

Fields

UflYPOIHT

______

H 25*05.180* W 077*21.118*

D7-FEB-94 a0:47

REF!

_________

REARIHC DISTANCE

000* 0.00Rs

REHANEY DELETE? DONE?

Position

CooriJinoles

Re/erence

Wo^'poinf

Done Prompt

returns tlie

display to

To create a new waypoint manually, you’ll need to know its position coordinates or its distance and bearing from an existing waypoint. If you know the position coordinates for your new waypoint:

1. Press the ▼ key to highlight the name field.

2. Press m to begin entry of the waypoint name.

3. Use the -a, and't' keys to enter your waypoint name, using the i and y keys to move to the next character position.

4. Press to confirm the waypoint name. The position field will now become highlighted, with the receiver's last knovm position shown.

UAVFCIHT

NAIIEiFISH

Wm77-"21. 111?'

REF:

_________

REARING DISTANCE

060* 0.001k

RENAttE? DELETE?

HAVPCINT

DONE?

NAtlDFISH

Q] 25*05.180'

W077*2i. US'

REF!

__________

REARING DISTANCE

000* 0.00Kv

RENAHE? DELETE? DONE?

5. Press to begin entry of the position.

6. Use the ▲ and ▼ keys to enter your position, using the ^ and ^ keys to move to each character field.

7. Press the key to confirm and save your coordinates. The default waypoint comment (UTC date and time of creation} will appear and the highlight will move to the 'done' field.

8. Press the key to return to the Menu Page.

UAVPOINT

««HE: FISH

N 25*05.180’ W 077*21.118’

REF!

__________

REARING DISTANCE

000* 6.00!k

RENAHE? DELETE?

Page 30

/ií’/t'l Í'ÍIC^

Wfl^/joipiís

To create a new waypoint manually without knowing its position coordinates, you’ll need to enter its bearing and distance from an existing waypoint. The GPS 120 will then calculate the position coordinates for you.

UflVPOIHT

NAME: ANCHOR

N 25*05.180' W 077*21.118'

OB-FEB-94 DB:S5 REF:|

ÍEARIMC DISTANCE

000* 0.00R.

REHANEi DELETE)

HAVPMNT

DCHE)

MAME: ANCHOR

M 25*05.180' W077*21.118’

DB-FED-34 SBiSS

RtrFISH

REARING DISTANCE

260* 05. gR.

RENAME) DELETE)

DONE)

Waypoint

Name ~

UAVPCINT

NAMEtÑNCHOS

N 25*05.130’

Reference

W 077*21.113'

Waypmnt

REF:

Bearing

from Reference Waypoint

1. Press 'w until the name field is highlighted.

2. Press to begin entry of the waypoint name.

3. Enter the name of your new waypoint

4. Press the Q key to confirm the waypoint name. The position field will now become highlighted, with the receiver's last known position shown.

5. Press the ▼ keyto move the cursor highlightto the reference field.

6. Press to begin entry of reference waypoint.

REARING DISTANCE

000*

RENAME) DELETE)

0.00K.

DONE)

PosiiWfl

' Qwriitnaies

are coioJated

after entering

reference data

Dtsiance

from

Reference

tVaypnmt

HAVPCINT

NAME: ANCHOR

N 25*03.63^' W077*26.934’

DB-FER-94 DB:5S REF: FISH

REARING DISTANCE

260* 5.50Ü.

RENAME) DELETE)

T.Usethe a^and '▼'keystoenterthenameof

your reference waypoint using the ^ and^ keys to move to each character field.

8. Press the keyto confirm your entry.

9. Enter the bearing and distance of your new waypoint from the reference waypoint Remember to use the Q key to begin entry and confirm each tield.lTie coordinates will be calculated and saved

for your new waypoint

10. Press the key jwhen the 'done' field is high lighted} to return to the Menu Page.

Page 31

From the waypoint definition page, you can also review and change any stored waypoint’s name, position coordinates, comment field or reference waypoint at any time. The waypoint definition page is also used to delete individual waypoints.

To change a waypoint’s position coordinates or reference waypoint:

I. Use the ▲and

you want to edit

2. Press to begin entry in the selected field.

3. Enter your new data.

4. Press the key to confirm your changes.

' keys to highlight the field

Each waypoint stored in the GPS 120 has a userdefined 16 character comment field. The default comment is the UTC date and time of the way point’s creation. To change or add a comment:

1, Use the ▲and

comment field.

2. Press to begin entry of your comment

3. Enter your new comment

4. Press the key to confirm your changes.

keys to highlight the

The rename and delete function fields are located at the bottom of the screen, to the left of the ‘DONE’ prompt. To select one of these functions, you need to use the ^ key to move the cursor highlight out of its main scrolling sequence. To rename a stored waypoint:

1. Usethe^ and^ keystohighlightthe 'rename'field.

2. Press the key to activate the rename page.

3. Enter the new waypoint name and press

4. Press the key to confirm your changes.

HftVkOIHT

Nfltit ANCHOR

N 25*03. G3-C W 877*26.934'

fAHD-IOTTOQ

______

REF! FISH

REARIHC DISTANCE

260* 5.50R.

REHAHET DELETED DONEf

HAVPOINT

HAHE: ANCHOR

N 25*03.$3^' W077*26.93^'

SAND SCTTOn

REF: FISH

DEARIHfi DISTANCE

260* 5.50K.

F;ENAt1E';'

DELETE? DONE?

RENAHE HAVFOINT

From

RNCHDR

To:

RFT-UP

fire you sure

lor Ho?

Page 32

!it:nini:t!

Dí’lt’tiiij,'

Wflj|»«ínís

DELETE UAYPDIHT

To delete a stored wa/point:

1. Use the 4 key to move the cursor highlight from the 'DONE' promptto the 'delete' held.

Press the Q key to activate the delete page.

3. A warning message will appear, asking you to confirm your deletion.

HARHING!

MfiP

uill be deleted

flre you sure

lor Ho?

4. Pressthe^ keytoselectdie7ES'prompt

5. Press the key to delete the waypoint and return to the waypoint page.

Waypoints that are part oían active or stored route cannot be deleted. You must tirst go to the route page and remove the waypoint routes. See pages 31 and 32 for complete instructions on editing routes.

from

all

Page 33

The GPS 120’s GOTO function lets you choose any stored waypoint as a destination and quickly set a course ftom your present position. Once the GOTO function has been activated, the Navigation Page will provide you with graphic steering guid ance to your destination. To activate the GOTO

function:

I. Press the key,

2 The Navigation Page will appear with the way

point field ready to accept changes.

3. Enter your destination waypoint

4. Press the key to confirm that you want to navigate to the displayed waypoint

You can also quickly activate the GOTO function from any other page by simply highlighting a waypoint and pressing the ^y key

Another time-saving function of the GPS 120 that you may have noticed when entering waypoint names is the waypoint scanning feature. As you enter waypoint characters, the screen will automatically display the first numerical or alpha betical match of the character you have entered. This will save you from always entering an entire waypoint name. To use the scan feature when the waypoint field is highlighted:

1. Press the i key to clear the nam e field.

2. Use the .a. and '▼'keys to scroll through your waypoints,

3. If you have more than one waypoint that begins with the same letter or number, you must use the ^ key to move to die next character positions as needed. Only the first character match is listed for each character set.

4. Once you've found the desired waypoint press m

To cancel an. active GOTO from any

press

Next, arrow key, and concern

your cancellation by

pressing the enter hey.

Iliis mII stop

steering guidance along

the original GOTO

desired track

page,

the GOTO key.

press Ifie

continued

leji

Page 34

BRG DST

082° 1.3^;:.

081° 18.r

TRK SFP

The GPS 120’s man overboard function (MOB) lets you simultaneously mark and set a course to a position for quick response in emergency situa

tions, To activate the MOB mode:

1. Press the key

2. The Navigation Page will appear with the default GOTO waypoint 'MOB' as the destination.

3. Press the key to confinn the MOB entry.

The Navigation Page will now guide you to the

MOB waypoint position.

o.es + a.as

ETE 9 'inc

0^:27 18.8

Martin^

an MOB

Bearing lo

MOB

Pment

Track

Estimated

rime

Enrcruie

Distance te

Velocity'

Made

The graphic ‘highway’ provides visual steering

guidance to the MOB waypoint. The moving arrow

just below the course deviation scale always points

to your selected waypoint relative to the direction

you are moving.

Your present position is represented by the dia

mond in the center of the course deviation sale. The line down the middle of the highway is your desired track. As you head toward a waypoint, the highway wifi move indiating the direction and

distance you are off course, relative to the position

diamond on the GDI scale. To keep your vessel on course, steer toward the center of the highway

MOB

Speed

Over

Grpund

Good

If you want to save the MOB waypoint, be sure to rename it, as it will be overwritten the next time a MOB is executed.

Page 35

The GPS 120’s route navigation feature lets you plan and navigate a course from one place to another using a set of pre-detined waypoints. Routes are often used when it’s not practical, safe or possible to navigate a direct course to a particu lar destination.

Routes are broken down and navigated in smaller segments called legs’. The waypoint you are going to in a leg is called the ‘active to’ way point, and the waypoint immediately behind you is called the ‘active from’ waypoint. The line between the ‘active to’ and the ‘active from’ waypoint is called the 'active leg’.

‘Active Leg'

Waypoint 1

raertive from'

When you activate a route with the GPS 120, it will automatically select the route leg closest to your position as the active leg. As you pass a waypoint in your route, the unit will select the next waypoint as the ‘active to’ waypoint.

Page 36

HARK POSITION

The GPS 120 lets you create and store up to 20 routes of 30 waypoints each. Routes are created, copied and edited through the route definition page, which is accessed through the Menu Page, To select the route definition page:

1. Press imtj] the Menu Page appears.

Use the ak and ▼ keys to highlightthe

'routes' submenu page.

H 38^53.530‘

W 034*48. ^31*

8dd to rout»

number: D

¡J you're headingoul

ifie

water

planned route to

gate, the CP5120 route

feature can

helping hand

home. Create a

points with the morh he;y

and save them to

open

route Marh Position Page, When_youareread)’/o head hoefe to

ply activate the route you created

order (see page

This method is

useful unfamiliar waters or you

are simpi)'running out

daylight.

0B1

wit/iout

stilf

series

from

when

navi

provide

of way-

the

port,

inverted

30).

you're

snuEf

hack

sim-

especially

3. Press the key to display the routes page.

4. To return to the Menu Page, press

Comment

field

Route

Waypoint

Route

Number

Route Leg

Distance

Seipirnce

Route Action

Fields ■'

, Desired Troclt

o/Leg

The route number field is displayed at the top of the page, with a 16 character user comment below. If no user comment is entered, the field will dis play the first and last waypoint in the route. The waypoint list in the middle of the page accepts up to 30 waypoints for each route, with fields for desired track and distance between legs.

Below the waypoint list are the route page func tion fields which let you copy, clear, invert or acti vate the displayed route. Routes 1-19 are used as storage routes, with route 0 always serving as the active route you are navigating. If you want to save a route currently in route 0, be sure to copy it to another open route, as it will be overwritten by the next route activation.

Page 37

To create a route in the GPS 120:

1. Press m to begin route number selection.

2. Use the ▲ or key to enter a route number.

3. Press the key to confirm the route number.

4. Press mto begin entry of a route comment {Note that the default Ifirst and last waypoint) comment will only appear if the comment field is blank).

5. Enter your comment and press the Q| key.

6. Highlight the No. 1 waypoint field and press

7. Enter the name of the first waypoint of your route and presses.

8. Continue entering the rest of your waypoints in order, using the key to start and confirm each field entry. The list will automatically scroll down as needed to enter up to 30 waypoints.

9. After you have finished entering all your waypoints, press to return to the Menu Page.

The route definition page is also used to copy a route to another route number. This feature is use ful when you make changes to the active route and want to save the new route and the original route. To copy a route:

1. Press to begin route number selection.

2. Enter the route numberto be copied and press

3. Move the field highlight to the 'copy* field and

presses.

4. Scroll through the available routes and select a destination route number. Only open routes will be available as choices. Press the 0 key to

copy the route.

ttOUTD 1

COPT TO ROUTE! __

CLRO ROTO

ROUTE: t

DOCK TO FISH

S2 HftTPMT DTK Dli

l.OOCK “

3. FISH

4. QIUE__

_______

33^9

---

—

—.'•■

___

________

copy TO ROUTE:

CLR7 IHUf nCTT

ROUTE: 1

DOOK TO PIPE

ИО HftVPUT DTK DIS

l.CWK .

г FUEL

Е.ГЧЫ. ззд>5 q

3.FISH d.DIUE “ 5

_______

COPT TO ROUTE:

CLRO IHUO ROTO

____ ____ ______

5. Press the key to return to the Menu Page.

Page 38

Clt’flrifig and

iimiii’s

FiOUTE: 1

ftOtK TO DIME

NO UflVPNT PTK MS

l.DOOK isg-g g

a.FUEL \llll

3. FISH

4. DIME

_______

...........

-----------

COFY TO ROUTE! __

OLEAR ROUTE

HARHIHG!

till Uroiypoihts

will be removed

•from "this route fire you sure

ROUTE! 1

POOK TO PIPE

NO HAVFHT PTK PIS

l.DOCK a.FUEL Will

3. FISH

4. DIUE ™ “ 5

__ __

_____

COPY TO ROUTE! „ OLRf IHUY

___

-----------

IHU-i ACT?

or Ho?

To clear a route from memory:

1. Press to begin entry of the route number.

2. Enter the route number and press Q.

3. Select the 'clear'field and press

The clear route warning will appear, asking you to confirm that you warn to remove all waypoints from the route.

1. Highlightthe'yes'field with the i key.

2. Press B to confirm your action.

3. Press to return to the Menu Page.

After a route has been entered in the GPS 120, it

can be activated in its defined sequence or invert ed from the route definition page. The process of activating or inverting a stored route takes a stor age route (routes 1-19) and copies it into the active route (route 0) for navigation. The storage route is now no longer needed and will be retained in its original format under its existing route number

This system allows you to have an active route

that you may edit during navigation and save as an entirely new route from the original. You will have

to copy the active route to an unused storage route to save it, since new route activation overwrites route 0. To activate a route:

1. Select the route definition page and press the key to activate the route number field.

2. Enter the route number to be activated and

press the B key.

3. Move the field highiight to the 'act' field and

presses.

Inverting a route allows you to navigate route legs in reverse order, without editing the original route. To activate a route in inverted order:

1. Follow the same steps as above, but select the W command field and press the key.

Page 39

Once a route has been activated, the Active Route Page will appear, displaying the waypoint sequence of your route with the estimated time enroute (ETE) at your present speed and distance to each vraypoint. As long as you are navigating an active route, the Active Route Page will become part of the main page sequence of the unit.

The Active Route Page will also allow you to change the ETE field to display desired track (DTK) or estimated time of arrival (ETA) for each leg. You can also clear or invert the active route. To display DTK or ETA for each leg:

1. Highlight the estimated time enroute (ETE) field and press the key.

ftOTlUE ftOUTE DOtK TO OIUE UnVPHT ETE PIS POCK

____________ FUEL QB:5T 5.9D FISH DS:54 11. S PIPE BS.E

2. Use the >A.or and press the I

' keys to select 'DTK' or 'ETA' I key.

To invert a route from the Active Route Page:

1. Press the a. key once to move the field highlight to the 'inverY field.

2. Press the key to invert the route.

To clear the active route from the Active Route

Page and stop route navigation:

1. Use the ▲and^ keysttselectthe'clear'held.

2. Press theQ key to clearthe active route.

Once a route has been created and stored in the GPS 120, it can be edited at any time, even if it is the active route. To edit a route from the Active Route Page or the route submenu page:

I.Usethe a, and t’keystoselectthewaypoint

you want to edit and press

An on-screen menu of editing choices will appear, with options for reviewing, inserting, delet ing or changing the waypoint field highlighted. Use the ak and ▼ arrow keys to select among the editing choices.

CLEARV IHUERTO

ftCTlUE ROUTE POCK TP OIUE UftVRHT ETE PIS POCK

FUEL DEiST 5.B9 FISK aS:54 11.B OIUE ie:4B B5.E

CLERRf

RCTIUE ROUTE POCK TO OIUE URYPHT ETE PIS DOCK FUEL

SISH

DIUE

CLEAR? INVERT?

IKUCRT^'

F;El.tIEU:

INSERT? REHOVE? CHRHtiE?

Page 40

ACTIVE ACUTE DCCK TO DIUE HAVPHT E1

FUEL

QlSH

DIVE

AEUIEU9 IH5ERT7

CHAKGE7

[E_ JIIS.

Once you’ve selected a waypoint from the route

list, choose a menu function;

1. To review the defiltition page for the waypoint, highlight the 'review' field and press

ZTo add a new waypointthat precedes the

selected waypoint, highlightthe 'insert* field and press the key.

3. To remove the selected waypoint highlightthe 'remove' held and press the 0 key.

4. To replace the selected waypoint with a new waypoint, highlight die 'change' held and press the key.

CLEAAO IHUERT7

ACTIVE ACUTE DOCK TO DIUE UAYAHT ETE DIS

CCCK

FUEL ri?H

\SS3

CLEAA7 IHUEAT9

081^

OBiSE S.BE DS:S3 U.B 12:47 25.B

DAG DST

e .a \

TAK SPD

Use the waypoint editing instructions described

earlier {see page 29) for creating a route to com

plete your changes. If you are editing the active

route (mute 0), copy your new route version to an empty route to save it, as the active route will be overwritten by a new route activation.

If you add, delete or change the first or last way-

point of a route, the default comment (first and

last waypoint) will automatically be updated after your changes.

At the beginning of the route section, we men tioned that the GPS 120 will automatically select the route leg closest to your position as the active leg. This wilt give you steering guidance to the

desired track of the active leg. If you would prefer

to steer directly towards a route waypoint, you can perform an ‘on-route GOTO’ right from the active route page.

1. Usethe akand ▼ keys to highlightthe desired route waypoint and press the Q key.

Once the Navigation Page appears, press Q

to confirm the on-route GOTO waypoint.

Page 41

The GPS 120 features a powerful moving map display that can do much more than just plot your course and route. The Map Page also provides you with a moving map cursor that will let you pan ahead to nearby waypoints, determine the distance and bearing to any map position and mark new waypoints white you navigate.

Zoom

CtJttirol

FieU

8x10

Grid Stale

(10

vcrtkal)

Bearing

and

DisUnci

Fields

200K:|

DIUE

D0(K

FUEL

BRC ZGD'DSTa.4TNII TBKeEDSFP B.BKT

Panning

Comroi Field

Present Position

Indiealor

Track

and Speed

Fields

The Map Page can be broken down into three main sections:

The zoom function and panning control fields are located at the top of the screen. There are 12 selectable zoom ranges from 0.2 to 320 miles or

0.5 to 600 km, measured vertically.

The map portion of the page is bordered by an 8x10 grid to help you estimate distances based on the map scale you are using. Your present posi tion is indicated by a position diamond, with your track and/or route displayed as a solid line. Nearby waypoints are represented as squares, with the waypoint name also listed. You may select which of these features are shown through the map setup submenu page (see page 43 for more information).

The last fields directly helow the map show your

hearing and distance to one of three selectable des

tinations: an active destination waypoint; a high lighted on-screen waypoint; or to the panning tar get crosshair. Your current track and speed are dis played just helow the bearing and distance fields.

Tke GPS 120 has on

screen range rings

help you

estimate distonces relative present position. The

value

of each

determined by the cur

rent

zoom

scale.

The distance value

each

ling is eefual to

l/5tfi

of the current

zoom range, with the

interval

of each

noted helow the/irst range ring.

To turn the range ring display on or

iefauU

setting is

see the map setup

instruetions on

page 43.

to your

ring is

ring

off

(the

off),

Page 42

lidriliicfi

Mflp;

Zoaittiitg (Ulti

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There are three main functions you an perform from the Map Page— zooming, pointing and pan ning. Each of these functions has its own ‘field’, which may be selected and activated for use.

Whenever the Map Page first appears, the zoom field {at the top left) is always selected. The Map Page has 12 map scales which are selected through the zoom function field. To select a zoom sale:

1. Press ^ or^ to fiigiiligfitthe zoom field

2. Press the key to begin range selection.

♦

DOOK

FUEL

BRU EEQ'DST9.4SHn TRKBBD'SPD E.nKT

zooHi aDim±|a!p

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TRKEED'SPD E.aHT

zooH!«ii;nt ftUiT:

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3. Use the or ▼ keys to scroll through and find the desired range scale.

4. Press to confirm your selection.

The second function field on the Map Page is the pan field, located at the top right of the screen. The pan function allows you to move the map with the four arrow keys to view aras outside the current map. To activate the pan function:

1. From the zoom field use the ^ key to highlight die pan field.

2. Press the key to activate the pan funcfion.

3. Use the arrow keys to move the map in any direction.

As you begin to move the map, a crosshair will appar. This crosshair will now serve as a target marker for the moving map. The distance and baring to destination will now be replaced by the distance and bearing from your present position to the target crosshair.

As you pan around the moving map display, you’ll notice that the target crosshair will ‘snap’ to on-screen waypoints and highlight the waypoint name. Once a waypoint name is highlighted, you an review its waypoint definition page or execute a GOTO function right from the Map Page.

Page 43

To review the definition page for a waypoint

highlighted in the map field:

1. Press the key.

2. To return to the Map Page, press

To GOTO a waypoint highlighted in the map

field:

1. Press the key.

2. Press the key to confirm the destination,

zm- apifHtr-BN?

PIPE

3. To return to the Map Page, press the key.

To stop the panning function and return to your

present position:

I. Press the key.

The last field on the Map Page is the map itself. From the zoom or pan fields, the cursor highlight may he moved into the map display by pressing the down arrow key. The arrow keys will now move the highlight through the map and 'point' at on-screen waypoints. To point at a displayed waypoint:

1. Use the arrow keys to move the cursor highlight from the zoom field into the map held.

2, Once you are in the map held, use the four arrow

keys to scroll through on-screen waypoints. The arrow key you use tMII determine the direction of your scroll. Once you have scrolled through all the waypoints, the cursor will move back to the zoom or pan function held.

Once a waypoint has been selected in the map field, its distance and bearing from your present position will be displayed in the destination field.

You can also review its waypoint definition page or

select it as a GOTO destination by following the same steps outlined above for waypoints highlight ed on the map field.

DOCK

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Page 44

Mhj;

iAfivfliici’rf

Zoomiii^j

md Paiiiiiiij^

ZOOtt! BBNII» MIT

DIVE

One of the benefits of a moving map display is

being able to pan to different map areas and see what’s out there. To get the most out of panning, you’ll need to be able to zoom in and out while you’re panning. This lets you move the map at a

faster speed and zoom in for waypoint details.

Once the pan function is activated, the cursor highlight moves back to the zoom field. To adjust

the zoom range while panning:

I. Press the n key to begin range selection.

DODK

FUEL

DRG BDD'DST 4.D1MII TRKBEi'SFD E.flKT

HARK POSITIVE

Uaypoint:

001

N 2502.8S5‘ U 07723.467'

Add io route

number:

___

2. Use the and zoom range.

3. Press to return to normal panning mode.

keys to select the desired

During panning, the crosshair represents a target position right on the moving map, with the range and bearing to the target displayed at the bottom of the screen. You can also use the target crosshair to mark a new waypoint position or as a GOTO destination right from the map field. To mark the target crosshair position as a new waypoint:

1. Press the Q key to capture the position.

2. Enter a new name and route number if you wish.

3. Press the 0 key to return to the Map Page.

You can also use the target crosshair as an

instant GOTO destination. Similar to the MOB

mode, this function will mark and instantly set a

course for a new waypoint called ’MAP’, To GOTO

the target crosshair:

1. Press the Q key to capture the position.

2. Press the Q key to confirm the MAP GOTO.

3. Press B to return to the Ma p Page.

If you want to save the MAP waypoint, be sure to rename it, as it will be overwritten the next time a map GOTO is executed.

Page 45

The GPS 120 Menu Page provides access to sub menu pages that are used to select and customize operation and navi^tion setup. The 11 submenus are divided into categories by function. The waypoint and route management submenus are discussed in their own respeaive seaions. Well now address the test of the submenus in the order they appear on the Menu Page. To select a submenu page from the Menu Page:

1. Highlight the submenu page you want to view.

2. Press the key to display the submenu page.

3. To return to the Menu Page, press the |

tor

The distance and sun calculation page will give you the distance and bearing between any two way points and calculate the sunrise and sunset (in local time) at a destination waypoint for a particular date. To perform a distance and sun calculation:

1. Highlight the'from' held and enter the desired waypoint Press 0 to move to the nextheld.

2. Highlight the 'to' field and enter the destination waypoint Press the Q| key to calculate the range and bearing to the destination waypoint

3. Highlight the'date' field and enter the date for your destination. Press the key to display the sun information.

HEHU

HEmFiEsT UF TS

UAVPOIHT LIST UAVPQIHT ROUTES

DIS RHO SUN CALC HESSACES OPERATIOtl SETUP

HAUICATIOH SETUP ALRRHS SETUP TRRCK LOd SETUP HAP SETUP I/'O SETUP

DIS AHP SUM CALC

FR0№RHCH0R TO! STRIKE

BEARIHC DISTANCE

153^

DRTE: 18 JAM 9^

SUNRISE 17:3<4:33

SUNSET 03:23:36

CAT DESTINATION)

25.8R»

The messages page displays all current messages in the GPS 120. There are two types of messages: temporary alerts (eg. approaching a waypoint) and condition alerts (eg. battery power is low). All mes sages are initially indicated by a flashing on-screen indicator. After a temporary alert has been viewed, it is cleared from the message page. Condition alerts are displayed on the messages page until the condi tion has been resolved. To view the messages page:

1. Move the field highlight to the 'messages' field and press ^9

See appendix B for a complete list of messages.

HESSAdES

Route Waypoint

Can't be Delete!

PRESS PAdE

Page 46

Opi’iatiim

SL’lnp

OPERftTIOH SETUP

NODE:

Horinal?

DftTE 18 JftN 9-i| Т1ПЕ 18:30:08

OFFSET: +0^:00 CONTRAST:

BACKLIGHT TINE:

30 seconds

tone: MSG Only

OPERATION SETUP

NODE:

Normal

BATE 18 JftN BA TINE 12:31:28

OFFSET!

CONTRAST:

BACKLIGHT TINE:

30 seconds

TONE! MSG Only

OPERATION SETUP

nOBE:

Normal

»ate 18 JAN BA ТШ 12:3 l:dd

OFFSET: -0gl00 CONTRAST:

BACKLIGHT TINE:

30 seconds

tone: MSG Only

+ИИ:ИИ

The remaining submenu seleciions on the Menu

Page are grouped together as setup pages. The first setup page is the operation setup page, which is used to select the operating mode, time offset and screen and tone preferences.

The GPS 120 has three available operating

modes;

Normal Mode operates the unit with satel

lite information and is the mode the unit will

usually be operating.

Simulator Mode allows you to operate the

unit without acquiring satellites, and is ideal

for practicing or entering waypoints and routes while at home.

AutoLocate™ Mode forces the receiver to

search for a new set of satellites in situations where you have moved more than 300 miles from the unit’s last known position.

To select an operating mode:

1. Move the field highlight to the 'mode'field and press then key.

2. Use the ▲and

mode and press I

' keys to choose the desired

The date and time field is located directly helow

the mode field. The date and time are calculated

from satellites and cannot be edited. Because the time shown is UTC time, you will need to enter a time offset to display the correct local time for your area. To determine the time offset for your area, note your current position and refer to the chart on appendix E. To enter the time oflkt:

V Move the field highlight to the 'offsef field and

press the key.

2. Enter the time offset for your longitude and press gg. Remember to select a positive or negative indicator foryour offset

Page 47

The GPS 120 features adjustable screen contrast for optimum wwing in any condition. The screen contrast is set by using an on-screen bar scale. To set the screen contrast:

1. Move the field highlightto the 'contrast' field and press the key.

2. Use the ^ and ^ keys to adjust the bar scale for

the desired contrast and press the Q key.

The screen backlight timer is adjustable for 0,15, 30,60,120 and 240 seconds. The ‘0’ setting will keep the screen backlighting on as long as the unit is on. Whenever screen backlighting is on. a light bulb icon will appear on the Status Page. To set the backlight timer;

I. Move the field highlightto the 'backlighttime'

field and press the key.

Use the a. and keys to toggle through and

select the desired setting. Confirm the setting by pressing the key.

3. To adjust the backlighting through its three levels, press momentarily.

The last available held on the operation setup

page is the tone field. This field lets you specify an

audible tone for message alerts and keystroke con

firmation. The tone may be set to sound for mes sages only, messages and keystrokes or no sound at all. To select a tone setting;

1. Move the field highlightto the 'tone' field and press the B key.

Use the ▲ and 'T keys to toggle torough and select the desired setting. Confirm the setting by pressing the key.

We’ve now gone through the operation setup submenu and its various settings. To return to the Menu Page:

OPERftTlOM SETUr

nODE:

Normal

MTE 82 MAR 95 TIHE 87:38:58

OFFSET: +88:88

CONTRAST:

RACKLIQHT TIHE:

38 seconds

tore: MSG Only

OPERATION SETtIP

HOPE:

Normal

DATE 18 JAM 9^ TIHE 06:32:15 OFFSET: -06:88

CONTRAST:

RACKLIOHT TIHE:

3|3 seconds

TONE: MSG Only

OPERATION SETUP

HOPE:

Normal

PRTE 18 JAN S4

TIHE 06:32:28

OFFSET: -06:00 CONTRAST:

RACKLICHT TIHE:

30 seconds

tone:[S|3G Only

I. Press the gp key.

Page 48

HflUICflTMII SETUP

№ITIOH FORMAT:

HAP DATUM:

UGS 8^

ODISOALE: *0.25 UMTS! Nauiicol

HEADING:

Guio Hag E084

The navigation setup page is used to selea units of measurement for position format, map datum, GDI scale, and distance, speed and heading information.

The default position setting for the GPS 120 is

latitude and longitude in degrees and minutes (hddd"mm.mmm’). You may also select degrees, minutes and seconds (hddd“mm’ss.s"); degrees only Giddd.ddddd"); UTM coordinates; or British, Irish, German, Swedish or Swiss Grid formats. To select a format:

1. Move the field highlight to the 'position formaf field and press the Q key.

2. Usethe ▲and '▼keystoseieetthedesired setting. Conhrm the setting by pressing

The CPS 120 corns

with

the htilude and

longituik position

and

WGS 84 map datum as the tings.

The WGS 84 map datum is a worldwide datum that’s suitohie/or use with most govern ment charts. Only change the map datum the charts you are using speeijiy a different map datum in the legend.

default

jomat

set-

WARN/NGI

Using the wrong datum

can seriously effect

accuracy Always the same datum indicat ed on the

are currently

of your GPS.

set

the CPS to

charts you

using.

the

KEY WEST HARBOR

AND APPROACHES

FLORIDA

SOUNDMOSlNfCCT

Map Daium

The map datum field is located just below the position format field, and comes with a WGS 84 default setting. Although 105 total map datums are available for use (see the map datum listing in appendix D), you should only change the datum if you are using charts that specify a different datum than WGS 84. To enter a different map datura;

1. Move the field highlight to the 'datum' field and press then key.

2. Use the ▲ and '▼ keys to toggle through and select the desired setting. Confirm the setting by pressing the B key.

A1 MEW LONVWAlcn

Page 49

The course deviation indicator (CDI) scale defi

nition field lets you select the +/- range of the CDI bar scale. Three scales are available: +/- 0,25,1.25 and 5,0 miles or kilometers, with 0,25 being the

default setting. To enter a CDI scale setting:

1. Highlight the 'CD! scale' field and press

2. Use the a^atid '▼'keystoselectthe desired CD] scale setting.

3. Press the 0 key to confirm the selection.

The GPS 120 lets you select nautical (default), statute or metric units of measure for all speed and distance fields. To change the unit of measure:

I. Highlight the 'units' field and press the key.

2. Use the and

unit of measure.

3. Press the key to confirm the selection.

' keys to select the desired

The GPS 120^ heading information can be dis played referencing magnetic north (automatic or

user-defined), true north or calculated grid head

ings. The default setting is automatic magnetic north, which is suitable for most applications. To

select a reference;

1. Highlight the heading field and press

NWlGltTlOH SETUP

POSITION FORNAT:

. mmm’

NAP DATUn:

WGS BA

ODI SCALE; ±0.2S

UNITS: Nau-ticcil

HEADING;

ñuto Mct9 Eee4

NAVIGATION SETUP

POSITION FORHAT:

hddol^mm. mmm'

HAP DATUtl:

WGS BA

CDI SCALE: 10, 25

UNITS! OdutiCCll HEADING:

ñuto Mag EBBA

2. Use the >^and ^ keys to select the desired heading preference.

3. Press the Q key to confirm the selection.

To enter a magnetic heading;

1. Selectthe ‘user mag' heading and press

2. Use the ▲ and ▼keystoenterthe degrees of magnetic variation,

3. Press the key to confirm the magnetic variation value.

NAVIGATION SETUP

POSITION FORNAT:

hddd^mm. mmm'

NAP DATUN;

UGS 3^

ODI SCALE: ¡0.25

UNITS: Nautical

HEADING:

User Mag^EeeS

Page 50

HEHU

HEAREfT HPTS HRVP(»INT LIST

HAVP4IHT ROUTES

№1S RHO SUR CRLC HESSAOES OPERATION SETUP

NAUIOATIOH SETUP

mLhRM? iETUF

TRAOK LOG SETUP HAP SETUP

SETUP

lyO

ALARMS SETUP

nnchor Drug:

0.eeK. Off

Arrival:

0.0R. Off

CDI Alarm:

0.0R. Off

The alarms setup page is used to set the three alarms available on the GPS 120; the anchor drag alarm, arrival alarm and CDI alarm.

The anchor drag alarm will sound if your vessel

has moved outside a range entered by the user

from a central point. The arrival alarm sounds

when you are approaching a waypoint and have

reached the user^efined distance. The CDI alarm will alert you when you have exceeded a specified crosstrack error.

The arrival and CDI alarms may be set from 0.0 to 9.9 units. The anchor drag alarm may be set up to 9.99 distance units. To set the alarms

1. Move the field highlight to die ‘alarms setup' field and press the iB key.

2. Use the -^and keys to select the desired alarms distance field and press the I^SV-

3. Enter the desired distance for the alarm and press the IB key.

4. If you iwould like to change the on/off setdng, pressthe^Bkeyandusethe >^and '^keys

to turn the alarm on or off.

You may repeal to change other alarms, or press

the ^B key to return to the Main Menu.

ALARMS SETUP

Anchor [>rag:

0.60R. On

A-

fVfiefl

setting the anchor drag alarm, remember thet Selective Availabilitv can degrade your GPS position to be off as much as 100 meters and may cause false anchor drag alerts.

Arrival:

1.0R. Off

C[)I Alarm:

0.3ik On

Page 51

The track log setup page lets you manage the

GPS 120’s tracking data. From this page, you can select whether or not to record a track and define how it is recorded. To turn the track log on or off;

1. Highlight the 'record track* field and press

2. Select'yes' or 'no' and press

The stored track criteria determines how often positions are stored in the track log. The default setting is automatic, which stores track based on resolution. This setting gives you the most efficient use of track memory. To change the criteria to record points based upon a specific time interval:

I. Highlight the 'criteria' field and press

2. Use the ^or and press

3. Presses to begin entry of the interval.

4, Enter a value in hours, minutes and seconds in

the field and press the B key.

' key to select'time interval'

The test of the track log setup page displays the

percentage of available memory currently used to

store track log data and a function field to clear the

track log memory. To clear the track log:

1. Highlight 'clear track logT and press

TRftCK LOG SETUP

CRITERIR:

Time Iпier^^ctl:

HEKORV USED 0X

S OF TEB POINTS

CLEAR TRACK LOGO

CLEAR TRACK LOG

HARKING!

till track log

points uill be

deleted

fire you sure

I or Ho?

2. A warning page will appear, asking you to con firm your actions. Use the i key to move the field highlight to the 'yes' field and press

Page 52

tlfiP SET4P

ORIEHTftTIOH:

Clorth Up

PLOTTED ITEHÎ

RIHCÎi ROUTE: HERREÎT: HRHES; TRACK LOd:

ИАР ÎETUP

ORIEHTATIOH:

North Up

PLOTTED ХТЕЛ;

RXHd^ ROUTE: NEAREST: HAKES: TRAOK LOd:

Ko Ves Ves Ves

see

Des

Ves Ves Ves

see

The map setup page lets you select map orienta tion and specify what items are displayed. The map may be oriented to north up, the direction of current travel (track up) or the direction of an active route leg (desired track up). The default set ting is track up. To change the map orientation;

1. Highlight the 'orientation' field and press

2. Use the ж and '▼'keys to toggle through and select the desired setting and press

The rest of the map setup page lets you specify what items are displayed or plotted on the Map Page. The first 4 plot items may be turned on or off by selecting 'yes’ or 'no’ in the appropriate field:

• The ‘rings’ selection will display the 3 present position range rings on the map.

• The ‘route’ selection will plot the straight leg lines between wa)points of an active route

and display all route waypoint names.

• The ‘nearest’ seleaion will display the nine

nearest waypoints to your present position

(not to the target cursor on the map).

• The ‘names' selection will display the waypoint name for the nine nearest waypoints.

To turn a plotted item on or off:

1. Highlight the confirmation lyes or no) held for the plotted 'item and press

Z. Use the ж and '▼'keys to select'yes'or'no'

and press theQkey.

The track log sets the number of points the unit will attempt to plot. The maximum setting is 768 points. Once you’ve reached the maximum num ber of track points, the older points will be lost as new points are added. To enter a log setting:

1. Highlight to the 'track log' field and press

2. Enter a value in the 3-digit field and press If you do not want to display a track, enter '000'.

Page 53

The last GPS 120 setup page is the I/O setup page. This page lets you specify the interfacing for mats for connecting external devices. There are six I/O options available: GRMN/GRMN, None/None, None/NMEA, NMEA/NMEA, RTCM/None, and RTCM/NMEA.

Each designation lists the input format first, fol lowed by the output format. To select I/O format:

1. Highlight the I/O field and press

2. Use the <A,and '▼'keys to toggle through and select the desired setting and press

The GRMN/GRMN setting is a proprietary for mat that lets you exchange information such as waypoints, routes and track logs between two com patible GARMIN GPS units or a PC with an option al GARMIN PC kit. During data transfer, the num ber of packets being exchanged will be displayed on screen. To select a transfer option:

1. Highlight the 'host* field and press

2, Usethe i<k.and ▼keystoselectthedesired

setting and press

1^0 SETUP

iGRMH^'GRriH

WfilTING...

_____

o-f

_____

PACKETS

I/'O SETUF

[flOHE^HMER?

HOST WAITING...

To disable all GPS 120 interfacing capabilities, select the None/None setting. If you want to output NMEA data to compatible external devices without any differential input capability, select the None/NMEA setting.

Once a NMEA output setting has been selected {with or without RTCM input), the NMEA field will become highlighted. To choose an NMEA format (0180,0182 or 0183 version 1.5 or 2.0):

1. Press 0to begin a NMEA selection.

2. Usethe >A,and '▼ 'keystoselectthedesired setting and press

3. The baud rate will be selected automatically.

_____oT______

PACKETS

Page 54

I/O jETWf-

HONE/NMEn

C3MER 0183 2.0

<1800 baud

I/O SETUP

RTCM/HMEfi

NMER 0183 2.0 <1800 baud

BEOCON REOEIUEk

FREO: 304.0KHZ RATE! 25bps

MST

________

»R 0dB

Tuning

The last two format settings allow the GPS 120

to accept RTCM DGPS corrections in RTCM 104 version 2.0 format. The RTCM/NONE format will allow connection to any manually tuned beacon receiver with the proper output interface, with the baud rate selectable from the GPS 120,

Differential GPS is capable of correcting your calculated position to be within 5-10 meters. Differential correction transmitters are not avail able in all areas, however. Check local area providers for service coverage.

The RTCM/NMEA selection controls the GARMIN GBR-21 beacon receiver. Once a RTCM setting has been selected, the GPS 120 will auto matically try to tune the last frequency and bit rate you selected or will switch to the default frequency of 304.0 kHz with a bit rate of 100 bps if no previ ous beacon has been tuned. You may also enter your own frequency and bit rate if desired.

To enter a DGPS beacon frequency:

1. Highlight the 'fieq' field and press

2. Enter the desired frequency and press

3. Highlight the 'rate' field and press

I/O SETUP

RTCM/NMEfl

NI1ER 0183 2.0 <1800 baud

BEACON RECEIVER

FREQ: 30^.0KHZ RATE: 25bps

BIST 35.8K»

SNR 38dB

4. Use the a . and ▼ keystoselectthe desired transmission rate.

5. Press the key to confirm your entry.

When the GPS 120 is receiving DGPS corrections from the GBR-21, the ‘beacon received section of the I/O setup page will display the beacon frequency and signal strength, as well as the distance from the trans mitter to the beacon receiver.

Reteiumg__

Page 55

I/O ?ETIir

RTCM/NMEñ

HMEñ 8183 2.0 4888 baud

BEACON RECEIUER

FREO: 384.8KHZ RATE: 25bps

OIST

_______

fNR 8dB

Tuning

Sialus Messoge

Ai the bottom of the beacon receiver field, a sta tus message will constantly keep you informed of DGPS activity:

• A ‘tuning’ message will be displayed while a heacon signal is being tuned.

• Once the beacon signal has been tuned, the status message will display a ‘receiving’ message.

• If a beacon signal is tuned and no correc tions are being received, a ‘no data’ message will be displayed.

• If a beacon signal cannot be tuned, a ‘no status’ message will be displayed.

The GPS 120 will also display alert messages concerning DGPS operation through the message page. Three DGPS messages may appear:

No DGPS Position indicates that not

enough data is available to compute DGPS

position.

No KTCM Input indicates that the beacon

receiver is not properly connected or the baud rates do not match.

RTCM Input Failed indicates that DGPS

data was being received but has been lost.

I/O SETUP

RTCM/KMEfl

NMER 8183 2.0 4888 baud

BEACON RECEIUER

FREÍ!

_______

KHz

RATE! 25bps

DIST________^ SNR 8dB

No Status

Beacon

Receiver Status

The CARMIN GBR 21 is the recommertifeii beacon receiver/or use with the GPS

Other RTCMJ04 v.

receivers are compatible with the GP5 may not provide com plete on-sereen status

tuning control.

120.

¡20,

2.0

but

Page 56

OPEROTlOtt SET«f

HODE:

Bimultitor?

MTE 18 JAH 94 TIKE 06:40:29 »FFfET: -06:06

ttHTRKST:

MCKLIGHT TIKE:

30 seconds

TONE! MSG Only

1111 M 11 M M 111111 Ml

34S N 015 030

IjjJjjj^JVujJjjjjJjjJ

TRACK STEED

006^ [10.0^

F4SITICN

N 25^05.180* W 077^21.118*

ALTITUDE

425fT i 74fT

TIKE

10:47:04

The GPS 120’s simulator mode lets you practice all aspects of its operation without active satellite acquisition. You can also plan and practice trips, enter new waypoints and routes and save them for use during normal operation.

The simulator mode is activated from the Menu Page, with vessel speed and heading controlled from the Position or Navigation Pages. To activate the simulator mode:

1. From the Menu Page, highlight the 'mode' held and press the n key.

2. Use the ▲ or 'V'keys to scroll through and select the simulator mode.

3. Press the Q key to confirm simulator mode.

4. Press to return to the Menu Page.

Once the simulator mode has been activated, use the Position or Navigation Page to set your speed and track. You may also enter a new posi tion if you desire (only from the Position Page). To enter track, speed and position:

1. Highlight the 'track'field and press the |

2. Enter a track heading and press

1. Highlight the 'speed' field and press fy

key.

2, Enter a speed and press

1. Highlight the 'position' field and press ^

006* 10.0’V

FDSITIDH

Enter a position and press the key.

Bl 25*05.180‘

The

W 077*21.113'

ALTITUDE

425^ i 74^

TIKE

10:47:22

A-

GPS 120 does not track satellites in simulator

mode. Although you cai\ create and save

points

and routes wtnle using the simulator mode,

never ertempt

to use tiie simulator mode for

ivey-

actual navigation. The GPS 120 will always power up in the last selected satellite mode.

Page 57

Your GPS 120 system includes the following hard

ware components:

•GPS 120 Unit

• Gimbal Mount Bracket &r two mounting knobscrews

• GPS Antenna with 30’ able

• Power/Data Cable If you are missing any of these pieces, see your dealer. To complete the standard

installation, you will also need the following pieces:

• 1 amp in-line fuse (may be included with Power/Data able)

• Four 1/4” (6mm) diameter mounting screws

• 1” X 14 marine antenna mount and screws

Several optional accessories are also available to provide flexible installation on any

vessel. See your GARMIN dealer for more information on these items:

• Swivel Mount • AC Adapter

• Antenna Cable Extension • Cigarette Lighter Adapter

To begin installation, you’ll need to select a suitable mounting position for the antenna and the unit. Once you’ve identified the best mounting loations for your appliation, install the antenna and cable first, then the unit and wiring harness.

Mounting the GPS antenna

The antenna should be mounted in a kxation that has a clear, unobstruaed view of the sky in all direc tions to ensure the best reception in all conditions.

Avoid mounting the antenna where it will be shaded by the boat^ superstructure, a radome antenna, or

mast. Most marine VHF and loran antennas will not seriously degrade the GPS antennal reception. Never paint the antenna or clean it with harsh solvents.

To install the GPS antenna;

1. Screw the antenna directly onto the 1" -14 mount

2. Route the cable to the location of the display uniL using the appropriate liewraps,escutcheon plates and sealant to secure the cable along the route and through any bulkhead or deck.

3. Once the GPS 120 unit has been installed, connect the cable to the antenna connector on the back of the display unit Turn the antenna connector 1/4 turn clockwise to lock the

cable into place.

Page 58

Monnting the GPS 120 unit

The GARMIN GPS 120^ compact, wateqjroof case is suitable for mounting in exposed locations or at the nav station. The unit comes with a gimba) bracket that can be used for surface, overhead, or flush mounting. When choosing a location for the display unit, make sure you consider the following conditions;

• There should be at least 2.00” {5,0 cm) clearance behind the case to allow connection of the antenna and power/data cables.

• The mounting surface should be rigid enough to support the unit and

protect it from excessive vibration and shock.

• The GPS 120 screen will provide crisp contrast in most lighting conditions, even in full sunlight.

To sur^ce mount the GPS 120:

1. Place the mounting bracket in the desired

location.

2. Mark and drill the four mounting holes forthe fasteners you are using. Note; The hole pattern

is compatible with Johnny Ray JR-400 swivel mount

Fasten the bracket to the surface using the

appropriate fasteners.

4. Insert the GPS 120 into the mounting bracket

5. Screw the two mounting knobs through the bracket and into the GPS 120.

6. Connect the power/data and antenna cables to the back of the unit, making sure the locking rings are fully tightened on both connectors.

Page 59

To flush mount the GPS 120:

The GPS 120 can be mounted flush with a flat panel of .08- 52” thickness using the cam lobe feature on its mounting bracket,

I. Cut a 4.15" W X 4.67" H hole in panel.

Place GPS 120 into hole from the front until its flange rests against

the mounting surface.

3. From the back side of the panel, loosely attach the bracket such that the slot in the ratchet area

points away from the mounting panel.

4. Rotate the bracket (townward until the panel

is pinched tightly between the the units flange and bracket lobe.

5. Tighten knobs and connect the power/data

and antenna cables.

To swivel mount the GPS 120 (with optional swivel mount bracket):

1. Place the swivel mount bracketin the desired location.

2. Mark and dnil the three mounting holes for the fasteners you are using.

3. Fasten the bracket to the surface using the appropriate fasteners.

4. Place the mounting bracket on top of the swivel

mount bracket, and secure using the knob included with the swivel mount kit Insert the GPS 120 into the mounting bracket.

5. Screw the two m ounting knobsthroughthe bracket and into the GPS 120. Connect the power/data and antenna cables to the back of the unit

Page 60

Connecting the power/data cable

system to a 10-40 volt DC power source and pro vides interface capabilities for connecting NMEA devices and an external alarm (see below for interface operation details). The diagram below indicates the appropriate harness connections.

To connect the GPS 120 to a power source;

The power/data cable connects the GPS 120

1. Connect the RED harness leadto Oie positive side of a 10-40 volt DC power source. Make sure the power lead has an in-line 1-amp fuse installed.

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

10-40 volt DC power source.

To connect an external alarm, cotmect the ground side of the alarm device to the YELLOW harness lead. (100 mA DC load max.) The following interface formats are supported by the GPS 120 for driving three NMEA devices:

NMEA 0180, NMEA 0182, NMEA 0183 version 1.5:

Approved sentences:

GPBWC, GPGLL, GPRMB, GPRMC, GPNTE.GPVTG, GFWPL

Proprietary sentences; PGRMM (map datum), PGRMZ (altitude), PSLIB (beacon lec. control)

NMEA 0183 version 2.0;

Approved sentences:

GPGGA, GPGLL, GPGSA, GPGSV, GPRMB, GPRMC, GPRTE, GPWPL

Proprietary sentences:

PGRME (estimated error), PGRMM (map datura), PGRMZ (altitude), PSLIB (beacon receiver control)

Page 61

Almanac Data—Satellite constellation information (including location and health of

satellites) that is transmitted to your receiver fmtn every GPS satellite.

Almanac data must be acquired before GPS navigation can begin.

Bearing—The compass direction from your position to a destination.

Course Made Good (CMG)—The bearing from the 'active from’ position (your starting

point) to your present position.

Crosstrack Error (XTE)—The distance you are olí a desired course in either direction.

Desired Track (DTK)—The compass course between the ‘from’ and ‘to’ waypoints.

Differential GPS (DGPS)—An extension of the GPS system that uses land-based

radio beacons to transmit position corrections to GPS receivers.

Estimated Time of Arrival (ETA)—Tbe time of day of your arrival at a destination.

Estimated Time Enronte (ETE)—The time left 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—The velocity you are travelling relative to a ground position.

Latitude—^A norih/south measurement of position perpendicular to the earth's polar axis.

Lon^tnde—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.

Track (ТИК)—The direction of movement relative to a ground positbn.

Universal Transverse Mercator- (UTM)— A grid coordinate system that projects

global sections onto a Hat surface to measure position in specific zones.

Velocity Made Good (VMG)—The speed you are closing in on a destination along a

desired course.

Page 62

The GPS 120 uses a flashing on-scteen message to alert you to important information. Whenever the message indicator appears, press the key to view the message page. There are two types of messages: temporary alerts and condition alerts. Temporary alerts are cleared from the message page after viewing, while condition alerts remain on the message page until the condition has been resolved. Pay careful attention to all messages for your own safety.

Accuraqr lias teen [kgraded—The accuracy of the GPS 120 has been degraded beyond 500

meters due to poor satellite geometry or data quality. You should check other navigation al sources to verify the position indicated.

Already Exists—^The waypoint name you are entering already exists in the GPS 120’s memory.

Anchor Drag Alarm—The vessel has moved outside of the anchor drag range. You should verify

the position change and reset die anchor, if necessary. Remember that the GPS position calcu lated by the GPS 120 can vary significantly due to coverage variations and Selective Availability.

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

Arrival at WPT—You have entered the arrival alarm range for the destination waypoint.

Can’t change Active WPT—You have attempted to change the ‘active to’ or 'active from’ waypoint.

Clear the active route or GOTO before making your changes,

CDl Alarm—Your crosstrack error has exceeded the alarm minimum.

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

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

Poor GPS Coverage—The GPS 120 cannot acquire the necessary number of satellites to

compute a position.

Power Down and Re-init—The GPS 120 is not able to calculate a position due to abnormal satellite

conditions. Turn the unit off and verify the last position shown by other means.

Page 63

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

operable. Take your unit to an authorised GARMIN dealer for repairs.

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

invalid identifier.

Receiver has Failed—^A failure in receiver hardware has been detected. If this message

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

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

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

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

route. You must first delete the waypoint from the route before striking it from memory.

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

and has been deleted from the route,

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

receiving the beacon signal.

Searching the Sky—The GPS 120 is in searching the sky for almanac data or the unit is in

AutoLocate™ mode.

Stored Data was Lost—AU waypoints, routes and almanac data has been lost due to

battery failure.

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

information to the connected device,

WPT Memory is Full—You have used all 250 waypoints in the GPS 120, Delete unwanted

waypoints to make room for new entries.

Page 64

r gives the UTC time offset for the

dd one hour to the offset.

various longii

Longitudinal Zone Offset

Wl80,tnoW172,5‘' -12 Wl72,5“toWl57.5‘’ Wl57.5'’ioWH2.5‘’ -10 WH2,5“toW127.5'’ -9 W127.5“toWll2.5“ -8 W112.5'’toW097.5'’ -7 W057.5“toW082.5'’ -6 W082.5‘’toW067.5‘’ -5 W067.5" 10^^052.5“ -4 W052,5'’toW037,5'’ -3 W037.5''toW022.5'’ -2 W022,5“toW007,5'’ -1

W007.5‘'toE007.5‘’ 0

£007.5“ to £022,5" 1 £022.5“ to £037,5“ 2 £037.5“ to £052.5“ 3 £052.5“ to £067.5“ 4 £067.5“ to £082.5“ 5 £082.5*10 £007.5“ £097.5" toE112.5“ 7 £112.5“ to £127,5“ 8 £127.5“ to £142.5“ 9 £142,5* to £157.5“ 10 £157,5" to £172.5“ 11 £172,5“ to £180.0“ 12

-11

Page 65

The GPS 120 is constructed of high quality

materials and should not require user maintenance. Should your unit ever need repair, please take it to an authorized GARMIN service center. The GPS

120 has no user serviceable parts. Never attempt any repairs yourself.

To protect your GPS, never allow gasoline or other solvents to come in contact with the case or lens. Clean the case and lens with a soft cloth and a household window cleaner.

PHYSICAL

'rr

--------

iptci/ifiiihms

Case; Size:

Weight:

Temperature Range:

PERFORMANCE

Receiver:

Acquisition Time:

Update Rate; Position Accuracy:

Velocity Accuracy; Dynamics:

POWER

Input: Usage;

Waterproof, dry nitrogen-filled

4,9"Hx5.3"Wx2.4”D (15,6x5.1x1.23 cm)

Less than 1 lb. (454g) 5“tol58“F(-15''to70“C)

Differential-ready MultiTracB™

Approx. 20 seconds (warm)

Approx, 2 minutes (cold)

Approx. 7.5 minutes (AutoLocaie™)

1/second, continuous 5-10 meters (16-33 ft.) with DGPS corrections*

15 meters (49 ft.) RMS**

0.1 knot RMS steady state, 99 knots max. Performs to specification to 3g’s

10-40V DC 2 waits

Spedfkations AubjeuL Lo change wiihoiu notice.

* With optional GARMIN GBR 21 Beacon Receiver Input.

** Subiect to accuracy degradation lo JOOro 2DBMS under the U$ DOD-imposedScleciivc Availability Program,

Page 66

The following list shows the 104 map datums available for the GPS 120. Menu Page abbreviations are listed first, followed by the corresponding map datum name and area.

Admdan Adindan- Ethiopia, Mali, Do$196R

ATgfMtye AINELABD 70

Anna 1 Ast *05 AKC H50 ARC 1950- Botswana,

ARC 1960 Aka» Istd '50 Ascension Island '58-

Astro B4 Sorol

Astro Bci Astro D» TI/4 Astro Dos 71/4' Sl Helena Astr Sto '52 Astronomic Sin '52- Marcus

Asirln Gtod '66 Ausiralian Geod 66-

Asirb Gto4 '01 Australian Geod

Bdlevuc (IGN> Rcmnda 1957 Bermuda 1957- Bermuda

Rogati Obs«rv Campo Incfaspe Canton Ast '66 Canton Asiro 1966- Phoenix

Cape Cape- South Afnca Cape Canavrl Cape Cana\'eml- Fionda,

Carthage

CH-\m CH 1903-Swiuerbnd

Chaiham 1971

Chna Astro Chua Astro- Paraguay

Conrtfo Akgr Djakarta Djakarta (Batavia)- Sumatra

Senegal, Sudan Af|CN?ye- Somalia AIN ELANBDimBahuln Island, Saudi Arabia

Anna 1 Astro '65- Cotes IsL Frame, Germany, Gibraltar,

Lesotho, Malawi, Swaziland, Zaire, Zambia, Zimbabwe

ARC 1960- Kenya, Tanzania

Ascension Island Astro B4 Sorol Atoll- Tern

bbnd

Astro Beaton "E"' Iwojima

bland

Ausiralia, Tasmania Island

Australia, Tasmania Island

Efaie and Erromango Islands

Islands Rogata Obsrvairy- Colombia Campo Inthauspe- Argemina

Islands

Bahama Islands Carthage- Tunisia

Chatham 1971- Chatham Island (New Zealand)

Conego Alegre- Brazil

Island (Indonesia) Utsoi Mindanao

Eutcrbl46T Easter Island 1967 EmopeJtt 1950

Eiropcan 1979

Finland HayfnI Gand^ika Base

Geod DalM '49

Guam 1963 Guam 1963' Guam bland Gnxl Astro Gux 1 Astro- Guadalcanal

Hong Kong'65

HuTh-SIih

Indian Bn^dsh

Indian Thaibnd Indonesia ‘74 Indonesia 1974- Indonesia trelind 1965 ISTS 073 Astro

Johnston Island

Kergnelen Islnd Kerguelen Island Kenan 194R Kertau 194^ West Malaysia,

L C. 5 Astro Liberia 1964 Liberia 1964- Liberia

1955

Dos 196fl- Geo bland

(New Georgia Islands)

European 1950- Austria, Belgium, Denmark, Finland,

Greece, Italy, Luxembourg, Netherlands^ Norway, Pcriugal. Spain^ Sweden, Switzerland

European 1979- Austria, Finland, Netherlands, Norway, Spain, Swetien, Switzerland

Finland Hayford- Finland Gandajika Base- Republic of

Maldives Geodetic Datum '49-

Kew Zealand

Island Hjorscy 1955- Itebnd Kong Kong'63- Hong Kong Ku-Tzu-Shan- Taiwan Indian- Bangladesh, India,

Nepal Indian- Thailand, Vietnam

Ireland 1965- Ireland ISTS 073 ASTRO 69-

Diego Garda

Johnston bland Kandawala

Kandawala- Sri Lanka

Singapore

Cayman Brae Island

Luzon- Mindanao Island

Page 67

Lozon PhilíppÍM

Mibc i97i

M»co Asir«

Massjw«

McTchicb Miitwiy Asl Minna

NADlTAbska

NAD27 BaluMikf

NAD27 Uñada

NAD27 Canal Zon NADZ7 Caribbn

NADZ7 Cantnl

KAD27 CONUS

NAD27 Cnba NAI)2TGmUnd

NA027 Mcdco NAD27SimSal

NADS3

Nbrwn Hasirafa

Nltrwn Saudi A Nhrwn United A Naparhna Wl

Ofasrvtofin ^

Old Egyplian Old Hawaiian Oman Ord SrpyCB

Pica De Las Nv PtcaJm Ast NÍ7

Luzon- PKilippifics

(excluding Mindanao Island)

Wabe 1971- Mähe Isknd Maao Astro- Salvage Island Masawa- Eritrea (Ethiopia) Merchich- MorcKXO Midway Astro *61' Midway Mmna- Nigeria Nonh American 1927-Alaska North American 1927Bahamas (excluding San Salvador bland) North American 1927- Canada and Newfoundland North Am. 1927' Canal Zone North Ainerican 1927Caribbean (Barbados, Cabos

UlandsXuba, Dom. Rep., GntTKl Cayman. Jamaica, Leeward and Turb blands) North American 1927- Cemral America (Belize^ Costa Rica, El Salvador, Guaiemala. Hortduras, Nicaragua) North Am. 1927-Mean Value (CONUS) North American 1927- Cuba North American 1917' Greenland (Hayes Península) N. American 1927- Mexico North American 1927- San Salvador Island North American 1983- Alaska, Canada, Central America, CONUS. Mexico Nahiwn-Masirah Island (Oman) NaKrwU' Saudi Arabia NaKrwn- Linked Arab Emiraies Naparima BW1- Trinidad and Tobago Observaiorio 1966- Corvo and Flores Islands (Azores) Old Egyptian- Egypt Old Hawaiian- Mean Value Oman- Oman Old Survey Gn Briitt' England, bk of Man, Scotland, Sheiland

Isl., Wales

Canary Islands Pitcairn Astro '67- Pitcairn Isl.

Prov 5 An ^5€

?rov S Chin ^2 Puerto Rico

Qauur Nailoniü Qomo^

Rcuiioa

Botne 19>0

RT90 Santo (Dos)

Sju Bras

Sapper Hill "43

Sehwarzedi 5th Amrcn *69

South Asia SEBase

SWBase

Tunbilai 1948

Tokyo Tristan Asl "68

VIUUvnl9l6

Wake-Eniwetok WGS 72 WGS84 Zanderi]

Prov So Amricn S6- Bolivia, Chile,Colombia, Ecuador, Guyana, Peru. Venezuela

Prov So Chilean '63- S. Chile Puerto Rko 6zVirgin Islands Qatar National' Qatar Qomoq- South Greenland Reunion- Mascarene Island Rome 1940- Sardinia bland Sweden Santo (Dos)- Espirito Samo Isbnd Sao Braz- Sao Miguel, Santa Marta Islands (Azores) Sapper Hill 1943“ East Falkland Isbnd Schwarictk- Namibia South American *69-

Argentina, Bolivia, Brazil,

Chile^ Colombia, Ecuador,

Guyana, Paraguay, Pern, Venezueb, Trinidad and Tobago

South Asia- Singapore Southeast Base- Potto Samo and Madiera Islands Southwest Base- Fatal,

Grat iosa, Pko, Sao Jorge and Terceira Islands (Azotes) Timbdai 1948- Brunei and E.

Malaysia (Sarawak and Sabah) Tokyo-Japan, Korea, Okinawa Instan Astro 1968-Tristan da

Cunha Viti Levu 1916- Vki Ltvu/ Fiji

Islands

Wake-Eniwetok- Maishall IsL

World Geodetit System 1972

World Geodetic System 1984

Zandehj- Surinam

Page 68

Active Wa^inis Active Route

Active Route Page Altitude Entry. ..

Antenna Installation AutoLocate™ Mode Auxiliary Functions

..............

..................

.........

............

......

.......

Backlighting

Backbghi Tinier.............

Beacon Receiver Setup..

Bearing

Capabilities

CDl Scale Setup

Contrast Setting

Cross Track Error,,.,

..................

..........................

..............

.......

........

Definitions................................

DGPS Setup

Distance and Sun Calculation.

Estimated Time of Arrival (ETA)

Estimated Time Enroule (ETE)

..............................

......

.......31

.......17

.......50

.......38

..37-47

......

.......39

..46-47 .,.,3,11

........

.46-47

......

........................

...........................

Glossary

................

GOTO Function... GPS Overview

......

Heading Selection.,

[

Installation (wiring) Installation (bracket) Interface Formats I/O Page

..........................

Interval, track storage

........

......

............

.....

Keypad Usage..

Keypad Tone...

Local Time Offset..........................................38,56

Losing Satellite Coverage

............

Magnetic Variation............................................ 41

Maintenance

MOB Function....................................................26

Map Datum List

Map Datum Selection.........................................40

Map Orientation

Map Page......................................................... 33

...tv .41 „39

Menu Page......................................................... 37

„12

Messages,,.....................................................37

Message Page

Message Descriptions

Navigation

Navigation Page

Navigation Setup...............

Navigation Uniis

Neatesi Waypoint Page NMEA Selection NMEA Ouiput Formats... Normal Mode

.......................................................

............................................

.................................................

Map Functions Map Panning and GOTOs Map Zooming and Scales

.............................................

...............................................

...................................

.........................

...............

.....

...............

....................

............................

..............................

............

.....

............

....

50-51

45-47

........................

......................

.....................

58-59

54-55

.........3,48

.11*12,26

.......40,41

............

...........

53 25

.52

„43

, 35

41 19 45 52 38

Page 69

Oflsei, local lime

Operating Mode Setup....

Operation Setup..................................................38,

Output Setup...................................................45-47

............................................

....................................

38,36

Packing List Page Sequence Page Rowchart Panning Position Entry Posiiion Page Power Off Power On

..........

.................

.....

.........

......

.......

........

.....

...........V

...

.......

„3536

......

...

Range Rings..........................

Reference Waypoints Routes

...................................

Active Route Page..

Creating and Copying Qearing and Activating.. Inverting Routes Editing Routes On-Route GOTOs

Satellite Status Satellite Status Page Searching the Sky. Setup Pages Simulator Mode

Sky View Display.............................................7,15

Steering Guidance

Sun and Distance Calculation..............................37

...........

.....

......

.............

.................

............

.............................................

..........

............................ 15,16

..........

.....................................16

................................................

...................................................

......................................

33,44

10,22

....

15,16

37-47

11 -12,26

17 17 13

Units ol Measure UTC time

UTM Cooidinates 27 31

Velocity Made Good (VMG).

29 30

Waypoints..............................

32 32

Waypoint Definition Page Waypoint Lia Page Nearest Waypoint Page

Marking Waypoints....

Creating Waypoints.

Naming Waypoints....

Deleting Waypoints....

Editing Waypoints

Renaming Waypoints. Welcome Page Wiring Installation

.........

................

.......

..........

.......

.....

......

41 .38,56

......

.11,26

......

.....

„20

.....

.18

....

,18

..24 „23 „23

.....

Time Setup ... Tone Setup,.,, Track

..............

Ttack Log Setup. Track Recording.

.38,36

......

.......43

39 43 43

Page 70

Page 71

«GflRNIN

9875 Widmer Road, Lenexa, KS 66215, USA

Part Number 190-00100-00 Rev, A

Garmin GPS 120 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Optional Accessories:

What is GPS?

How Docs GPS Work?

What are the Advantages of GPS Navigation?

35Г s.ev

REEF

108 l^T i 7^P»

15:-47:32

15:<18:11

74^r

presses.

Uaypoint:

N 25*02.8S5‘ U 077*23.467'

FR0№RHCH0R TO! STRIKE

153^

25.8R»

Horinal?

30 seconds

tone: MSG Only

Normal

30 seconds

TONE! MSG Only

Normal

30 seconds

tone: MSG Only

UGS 8^

Guio Hag E084

WARN/NGI

AND APPROACHES

WGS BA

UNITS: Nau-ticcil

hddol^mm. mmm'

WGS BA

ñuto Mag EBBA

hddd^mm. mmm'

UGS 3^

UNITS: Nautical

User Mag^EeeS

nnchor Drug:

Arrival:

CDI Alarm:

Time Iпier^^ctl:

fNR 8dB

Tuning

RATE! 25bps

No Status

MTE 18 JAH 94 TIKE 06:40:29 »FFfET: -06:06

30 seconds

TONE! MSG Only

006^ [10.0^

N 25^05.180* W 077^21.118*

425fT i 74fT

10:47:04

006* 10.0’V

425^ i 74^

10:47:22

To install the GPS antenna;

Monnting the GPS 120 unit

To sur^ce mount the GPS 120:

Connecting the power/data cable

PHYSICAL

PERFORMANCE

POWER

N 2502.8S5‘ U 07723.467'