Manuel d'utilisation / d'entretien du produit GPS III A du fabricant Garmin
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Owner’ s Manual & Refer ence ® GPS III A 7/21/98 8:50 AM Page 1.
Software V ersion 2.0 or above © 1997 GARMIN Corporation, 1200 E. 151st Str eet, Olathe, Kansas 66062 USA T el: 913-397-8200 Fax: 913-397-8282 GARMIN (Europe) Ltd., Unit 5, The Quadrangle, Abbey Park, Romsey , Hampshire SO51 9AQ UK T el: 011-44-1794-519944 Fax: 011-44-1794-519222 GARMIN (Asia) Corp.
Thank Y ou! Thank you for choosing the GARMIN GPS III —the smallest, easiest-to-use GPS navigator for marine, auto- motive and outdoor use! The GPS III represents GARMIN’ s continuing commitment to provide quality naviga- tion information in a versatile and user -friendly flexible design you’ll enjoy for years.
CAUTION: The Global Positioning System (GPS) is operated by the government of the United States, which is solely responsible for its accuracy and maintenance. The system is subject to changes which could affect the accuracy and performance of all GPS equipment.
INTRODUCTION FCC Compliance iii This device complies with Part 15 of the FCC limits for Class B digital devices. This equipment generates, uses, and can radiate radio frequency ener gy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
INTRODUCTION Limited W ar ranty iv GARMIN Corporation warrants this product to be fr ee from defects in materials and workmanship for one year from the date of pur chase. GARMIN will, at its sole option, repair or replace any components which fail in normal use.
INTRODUCTION About This Manual . . . . . . . . . . . . . . . . . . . .i Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . .ii FCC Compliance . . . . . . . . . . . . . . . . . . . . .iii Limited W arranty . . . . . . . . . . . . . . . . . . .
vi INTRODUCTION T able of Contents GOTO . . . . . . . . . . . . . . . . . . . . . . . . . . . .49 GOTO Options . . . . . . . . . . . . . . . . . . . . . .50 MOB . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51 T racBack . . . . . . . . . . .
1 GETTING ST ARTED Unit Features Antenna (detachable) Function Keys LCD Display Battery Door Rocker Keypad Power/Backlight Key (red) T o change the screen orientation, press and hold the P AGE key .
2 GETTING ST ARTED Keypad Usage / Display (POWER) — Red key turns the unit on and off, and controls three levels of scr een backlighting intensity . (P AGE) — Scrolls main pages in sequence and returns display from a menu/options page to a main page.
GETTING ST ARTED Batter y Installation 3 The GPS III operates on 4 AA batteries (not included), which are installed at the base of the unit. These batteries provide up to 8 hours of continuous use. Rechargeable NiCad or lithium batteries may also be used.
What is GPS? GETTING ST ARTED The Global Positioning System (GPS) is a system of 24 satellites which circle the earth twice a day in a very precise orbit and transmit information to earth. The GPS III must continuously “see” at least three of these satellites to calculate your position and track your movement.
Once the GPS III has calculated a position fix, you’ll usually have anywhere from five to twelve satellites in view . The receiver will then continuously select the best satellites in view to update your position.
This usually provides a position fix in 1 minute. Y ou’ll know you have a fix when the unit automatically transitions from the Satellite Page to the Map Page (shown left). Y our receiver is now ready to use! T o turn the unit off: 1. Press and hold the red power key for 1 second.
T o turn the GPS III back on, press and hold the red power key . The GPS III features six main pages which are linked together in a chain. Y ou can quickly scroll thr ough the pages in either direction using the P AGE or QUIT keys. Let’ s briefly tour each of these pages in order to give you some insight into how they help you navigate.
Let’ s start with the Satellite Status Page, which is the page you’ll view while your unit is getting a position fix. If you’re not already on this page, pr ess P AGE or QUIT until it appears.
The Position Page shows you where you are, what dir ection you’re heading, and how fast you’re going—and it’ s the page you’ll want to use when you don’t have a destination selected.
The Map Page shows your movement using a real-time track log (an electr onic breadcrumb trail that appears directly on the map as you’r e traveling), and your present position as a pointer icon in the center of the map. The Map Page also shows any nearby lakes, rivers, highways and towns.
The GPS III features two differ ent navigation pages: Compass and Highway . The Compass Page is first. This page provides graphic steering guidance to a destination waypoint, with an emphasis on the bearing to your destination and current direction of travel.
The GPS III’ s Highway Page also provides graphic steering guidance to a destina- tion waypoint. As you head toward your destination, the middle of the scr een pro- vides visual guidance to your waypoint on a moving graphic “highway .” Y our present position is at the bottom center of the highway display .
The GPS III’ s Main Menu pr ovides access to additional pages (submenus) that are used to create or edit waypoints, create r outes, list nearby waypoints, review trip infor- mation and timers or make changes to system settings. These six pages are divided into categories by function.
GPS is really about marking and going to places called ‘waypoints’. Before we can use the GPS III to guide us somewhere, we have to mark a position as a waypoint. Y our GPS III can hold up to 500 waypoints. T o mark your present position: 1. Press and hold the ENTER/MARK key .
Once you’ve stored a waypoint in memory , you can use the GPS III to guide you to it by using the GOTO feature. A GOTO is really nothing more than a straight-line course from your pr esent position to the destination you’ve selected.
T o cancel the current GOTO destination, simply select another destination. If no destination is currently desired, or you want to resume a pr eviously selected route, the GOTO operation may be cancelled fr om the GOTO Options Page. T o cancel the current GOTO destination: 1.
The GPS III is a powerful navigation system pr oviding detailed mapping informa- tion in a convenient, compact package. This simulator tour is designed to show you the basic features of your new GPS III during a simulated trip.
T o select the simulator mode: 1. Press MENU to list the options for the Satellite Status Page. 2. Highlight ‘Start Simulator’ with the rocker keypad, and press ENTER. 3. Press ENTER again to acknowledge the simulator warning message. Let’ s look at the sequence of pages again.
The GPS III’ s Map Page combines digital charting with a number of user -selectable features. Before we select our destination and begin navigating towar d it, let’ s take a look at some of those features. The map display shows your present position using a pointer icon in the center of the screen.
Select a five mile scale by pressing zoom IN or OUT repeatedly . W orking from the Map Page is a simple pr ocess that centers around the use of a reference “arr ow”.
4. Now let’ s use a special symbol to identify this location. Highlight the waypoint symbol field, using the rocker keypad, and press ENTER. Use UP/DOWN on the rocker keypad to select the ‘Information’ icon (‘?’) and press ENTER. 5. T o save the new waypoint, highlight ‘Done’ with the rocker keypad and press ENTER.
T o mark your present position: 1. Press and hold the ENTER/MARK key . The Mark Waypoint Page will appear , with a default three-digit name for the new waypoint in the upper -left portion of the page.
Notice the information on the map display is slowly moving? That’ s how it would look in actual use as well. The background map information and nearby waypoints will move across the scr een, while your current position remains fixed in the center .
T o view the Highway Page, press P AGE. The Highway Page provides a graphic highway display that shows your move- ment relative to the desired course. The line down the middle of the highway r epre- sents your desired course. As you navigate towar d your destination, the highway will actually move, indicating the direction you’re of f course.
The GPS III’ s Satellite Status Page pr ovides a visual reference of various r eceiver functions, including current satellite coverage, receiver operating mode, battery level and position accuracy .
Y ou can use the sky view to help determine if any satellites are being blocked, and whether you have a current position fix (indicated by a ‘2D Navigation’ or ‘3D Navigation’ in the status field). Y ou can also set the sky view to a ‘T rack Up’ config- uration, causing the top of the sky view to align along your current track heading.
Poor GPS Coverage — the r eceiver isn’ t tracking enough satellites for a 2D or 3D fix due to bad satellite geometry . Not Usable — the receiver is unusable, possibly due to incorrect initialization or abnormal satellite conditions. T urn the unit off and back on to reset, and reinitial- ize the receiver if necessary .
EPE and DOP The Satellite Status Page also indicates the accuracy of the position fix, using Estimated Position Error (EPE) and Dilution of Precision (DOP) figur es. DOP mea- sures satellite geometry quality (i.e., number of satellites received and where they ar e relative to each other) on a scale from one to ten.
The following Satellite Status Page options are available: Star t Simulator — allows you to activate the GPS III’ s built-in simulator mode. If ‘Start Simulator’ is selected, ‘Stop Simulator’ will appear as an option instead. T o activate (deactivate) simulator mode: 1.
With 2D coverage, you will need to enter your approxi- mate altitude. Without an appr oximate altitude, your position err or can be substan- tial. The Position Page shows you wher e you ar e, what direction you’r e heading and how fast you’r e going.
Many features of the GPS III are menu driven. Each of the main pages has an options menu, allowing you to custom tailor the corresponding page to your prefer- ences and/or select special features which specifically relate to that page. T o display the Position Page Options, press MENU (with the Position Page displayed).
Change Fields — allows you to choose the data displayed on the six user -selec- table data fields. A vailable data types are: Altitude, A verage (A vg) Speed, Battery (Bat) T imer , Max Speed, Odometer , Speed, Sunrise (at present position), Sunset (at present position), T rack, T rip Odometer , T rip Timer , User T imer and V oltage.
The GPS III features a powerful real-time moving map that can do much more than just plot your course and route. The Map Page also displays backgr ound detail, including geographic names, lakes, rivers, coastlines and highways.
Another function on the Map Page is the pan function, which allows you to move the map with the keypad in order to view ar eas beyond the current map. T o activate the pan function: 1. Use the rocker keypad to move the map in any direction, including diagonally .
Many features of the GPS III are menu driven. Each of the main pages has an options menu, allowing you to custom tailor the corresponding page to your prefer- ences and/or select special features which specifically relate to that page. T o display the Map Page Options, press MENU (with the Map Page dis- played).
T o measure bearing and distance between two points: 1. Highlight ‘Measure Dist’ and press ENTER. An on-screen pointer will appear on the map display at your present position. 2. Move the cursor to the desired reference point (the point you want to measure from) and press ENTER.
T o change a map setup feature: 1. Highlight ‘Map Setup’ and press ENTER. 2. T o change map orientation, select the ‘Map’ tab (if not already selected) and press ENTER. Highlight the ‘Orientation’ field and press ENTER. Select ‘North Up’ to fix the top of the map display to a north heading.
Whenever a destination waypoint(s) has been selected, the GPS III’ s Compass Page will guide you to your destination with digital readouts and a graphic com- pass display , which includes a bearing pointer .
Many features of the GPS III are menu driven. Each of the main pages has an options menu, allowing you to custom tailor the corresponding page to your prefer- ences and/or select special features which specifically relate to that page. T o display the Compass Page Options, press MENU (with the Compass Page displayed).
The GPS III’ s Highway Page also provides graphic steering guidance to your des- tination, by using a graphic highway display . Along the right side of the page (top, when display is vertical) are four user -selectable data fields that display current speed, distance and time to next waypoint, and a bearing pointer (defaults).
Many features of the GPS III are menu driven. Each of the main pages has an options menu, allowing you to custom tailor the corresponding page to your prefer- ences and/or select special features which specifically relate to that page. T o display the Highway Page Options, press MENU (with the Highway Page displayed).
The ENTER/MARK key allows you to mark your cur- r ent position as a waypoint. Y ou can give this waypoint any name you choose—up to six characters long. Y ou can also choose from a list of symbols used to identify the user waypoint on the map display .
W aypoints can be cr eated dir ectly fr om the Map Page, by placing the panning arr ow on the desir ed position and pr essing ENTER. User waypoints can also be cr eated by entering the position coor dinates for the waypoint.
4. Highlight ‘New Waypoint’ and press ENTER. The New W aypoint Page appears. 5. T o enter a name for the new waypoint, highlight the waypoint name field and press ENTER. Use the rocker keypad to enter the waypoint name and press ENTER when finished.
Show Map — allows you to view the map area around the highlighted waypoint on the W aypoint List. While viewing the map display , you can also use the IN and OUT zoom keys to see additional detail. T o view the map area around a highlight waypoint on the W aypoint List: 1.
T o rename the waypoint: 1. Highlight the waypoint name field and press ENTER. 2. Use the rocker keypad to enter the new waypoint name and press ENTER. 3. If finished, highlight ‘Done’ and press ENTER. T o change the waypoint’ s symbol: 1. Highlight the waypoint symbol field and press ENTER.
The W aypoint Edit Page also features an options page that allows you to delete the waypoint, view the map area ar ound the waypoint position, define how the waypoint will appear on the map display or average the waypoint position to improve accuracy .
Another waypoint feature of the GPS III is the Nearest W aypoint List, which shows up to nine nearest waypoints within 200 miles of your present position. The Nearest W aypoint List also shows the bearing (BRG) and distance (DST) to each nearby waypoint.
The GPS III can navigate to a destination using any of four dif ferent methods: GOTO — lets you select a waypoint as your destination and quickly plot a direct course from pr esent position to that waypoint.
T o designate a GOTO waypoint from a list of waypoints: 1. Highlight the desired waypoint on the list and press GOTO. A confirmation page shows the selected destination waypoint. 2. Press ENTER to confirm the selected waypoint and begin navigating. T o GOTO an existing waypoint on the map display: 1.
Cancel GOTO — cancels the current GOTO destination and resumes navigation of any previously selected r oute. If no route is currently in use; bearing, distance, etc. will remain blank until a destination waypoint is defined. T o cancel the current GOTO destination, highlight ‘Cancel GOTO’ and press ENTER.
The T racBack navigation feature allows you to retrace your path using the track log automatically stored in the receiver’ s memory . This eliminates the need to manu- ally store waypoints along the way . A track log is an electronic breadcrumb trail, showing the path you have travelled.
Once a T racBack has been activated, the GPS III will take one of the track logs cur- rently stored in memory and divide it into r oute segments, called ‘legs’.
Route navigation allows you to manually create a sequence of intermediate way- points which lead you to your final destination. The GPS III will store up to 20 reversible r outes, with up to 30 waypoints in each route.
T o create a route fr om the map display: 1. Press MENU twice to display the Main Menu. 2. Highlight ‘Routes’ and press ENTER. The Route List is displayed, showing all routes stored in memory . 3. Press MENU to display the Route Options. 4. Highlight ‘New Route ’ and press ENTER.
The GPS III’ s Route List displays all the r outes currently stored in memory , along with a descriptive name for each route. Once a r oute has been created, it can be activated and used for navigation from the Route List.
3. Highlight the desired route and press ENTER to display the Route Plan Page. 4. Highlight the name field and press ENTER to begin editing. 5. Use the rocker keypad to enter the desired name and press ENTER when finished. Route Editing Once a route is added to memory you can review and/or edit the r oute from the Route Plan Page.
6. T o edit the route from the map display, press MENU from the Route Plan Page. Highlight ‘Show Map’ and press ENTER. Use the rocker keypad to place the cursor on the desired waypoint and press MENU. A pop-up menu appears. Select the desired option and press ENTER.
When a route is highlighted on the Route List, additional functions ar e available from the Route Options. T o display the Route Options, press MENU (with the Route List displayed). The following options are available: New Route — allows you to create a new r oute, as described on page 54.
Delete All — allows you to remove all r outes from memory . The waypoints con- tained in all stored r outes will remain in memory , but not as part of any route. T o delete all routes fr om memory: 1. Highlight ‘Delete All’ and press ENTER. A confirmation page will appear .
Many features of the GPS III are menu driven. Each of the main pages has an options menu, allowing you to custom tailor the corresponding page to your prefer- ences and/or select special features which specifically relate to that page. T o display the Active Route Page Options, press MENU (with the Active Route Page displayed).
Deactivate — cancels navigation of the route you ar e currently using. Inver t — reactivates the current r oute in reverse order and navigates from the end waypoint back to the beginning waypoint.
The GPS III’ s Main Menu provides access to the waypoint, r oute, track log, timer and setup features of the receiver . The Main Menu can be accessed at any time using the MENU key .
T rack Log Settings T o view the T rack Log Options, highlight ‘Active Log’ or any of the ‘Saved Logs’ (on the T rack Logs Page) and press MENU. The following options are available: T racBack converts the track log data in memory into an inverted route (of up to 30 way- points) and begins navigation along the route.
T rack Log Settings (cont.) Delete All allows you to clear all track logs, active and saved, fr om memor y . T o delete all track logs from memory: 1. Select ‘Delete All’ from the T rack Log Options and press ENTER. 2. Press ENTER again to confirm (or QUIT to cancel).
T rip Computer — provides readouts for average speed, maximum speed, odome- ter , trip odometer and trip timer . These readouts can be reset from the T rip Computer Options. T o reset a trip computer readout(s): 1. Press MENU (with the T rip Computer Page displayed).
The file tab headings and setup functions for these pages are: Simulator Enable/Disable; Settings for simulated T rack, Speed and Altitude System Backlight timeout, Battery type, Display Contrast and .
Simulator Settings Mode lets you turn the built-in simulator on or off. T o enable/disable the built-in simulator: 1. Highlight the ‘Mode’ field and press ENTER. 2. Select ‘Simulator Off’ or ‘Simulator On’ (as desired) and press ENTER. Speed lets you select a simulated speed when the simulator is enabled.
System Settings Backlight lets you keep the screen/keypad backlighting on continuously (‘always on’) when selected, or enable the automatic shutoff to pr eserve battery life. Automatic shutoff times from 15 seconds to 4 minutes (since last key pr ess) are available.
Units Settings Distance & Speed lets you select the desir ed units of measure for distance and speed readouts in ‘Nautical’, ‘Statute’ or ‘Metric’ terms. Heading lets you select the reference used in calculating heading information. Y ou can select from ‘Auto Mag V ar’, ‘T rue’, ‘Grid’ and ‘User Mag V ar’.
Timers Settings User Timer lets you select a count up or count down timer . For a count down timer you may also specify the count down duration. T o select a user timer setting: 1. For a count down timer , highlight the ‘User T imer’ field in the right-hand column, press ENTER and enter the count duration using the rocker keypad.
Time Settings Time Format allows current time to be displayed using a 12- or 24- hour clock. This field is also used to select between local and UTC time readouts. T o select a time for mat: 1. Highlight the ‘T ime Format’ field and press ENTER to display the available options.
Alarms Settings Clock Alarm uses the internal clock to provide an ‘Alarm Clock’ message at the time you set. T o enable/disable the alar m clock: 1. Highlight the ‘Clock Alarm’ field and press ENTER. 2. Select ‘On’ or ‘Off’ (as desired) and press ENTER.
Position Settings Position Format is used to change the coordinate system in which a given position reading is displayed. The default format is latitude and longitude in degrees and minutes (hddd°mm.mmm’). The following additional formats are available: • hddd.
Interface Settings Format lets you control the input/output format used when connecting your GPS III to external NMEA devices, a DGPS beacon receiver , a personal computer , etc. Five format settings are available: • GARMIN — the proprietary format used to exchange waypoint, r oute, track log data with a PC or with another GPS III.
The GPS III can be mounted on the dashboard of an automobile or to another convenient surface using the two V elcro™ strips pr ovided with the unit. T o mount the GPS III using the V elcro strips: 1. Select a location for the unit that pro- vides a clear and unobstructed view of the sky .
The GPS III is constructed of high-quality materials and should not require user maintenance. If your unit ever needs repair , please take it to an authorized GARMIN service center . The GPS III has no user -serviceable parts. Never attempt any repairs yourself.
Interfacing formats are selected fr om the Setup Menu, described on page 67. The input/output lines on your GPS III are RS-232 compatible allowing easy interface to a wide range of external devices, including PCs, differential beacon receivers, marine autopilots and/or a second GPS receiver .
The GPS III’ s antenna may be removed to allow attachment of an optional remote-mounted antenna. In some applications, using a remote-mounted antenna will dramatically increase the number of satellites received. The GPS antenna should be mounted in a location which provides an unobstructed view of much of the sky .
Alarm Clock —The alarm clock time that was set from the Alarms submenu has been reached. Approaching —Y ou are one minute away from r eaching a destination waypoint. Arrival at —Y ou have reached your destination way- point. Battery Power Low —The batteries ar e low and should be replaced.
RAM Failed —The GPS III has detected a failur e in its internal memory . If the message persists, the GPS III is unusable and should be taken to an authorized GARMIN service center . Received Invalid W aypoint —A waypoint was received during upload transfer that has an invalid identifier .
Adindan Adindan- Ethiopia, Mali, Senegal, Sudan Afgooye Afgooye- Somalia AIN EL ABD ‘70 AIN EL ANBD 1970- Bahrain Island, Saudi Arabia Anna 1 Ast ‘65 Anna 1 Astro ‘65- Cocos Isl.
Hong Kong ‘63 Hong Kong ‘63- Hong Kong Hu-Tzu-Shan Hu-Tzu-Shan- T aiwan Indian Bngldsh Indian- Bangladesh, India, Nepal Indian Thailand Indian- Thailand, Vietnam Indonesia ‘74 Indonesia 1974- In.
Old Hawaiian Old Hawaiian- Mean V alue Oman Oman- Oman Ord Srvy GB Old Survey Grt Britn- England, Isle of Man, Scotland, Shetland Isl., W ales Pico De Las Nv Canary Islands Ptcairn Ast ‘67 Pitcairn Astr o ‘67- Pitcairn Isl.
Altitude —Height above mean sea level (MSL). A vg Speed —The average of all second-by-second speed readings since last reset. Bearing (BRG) —The compass direction from your present position to a destination waypoint. Course —The desired course between the active ‘from’ and ‘to’ waypoints.
T o Course —The recommended direction to steer in order to reduce course error or stay on course. Provides the most ef ficient heading to get back to the desired course and proceed along your r oute. T rack —The direction of movement relative to a ground position.
A Active Route Options . . . . . .37,62-63 Active Route Page . . . . . . . . . . .16,61 Alarms . . . . . . . . . . . . . . . . . . .67,73 Almanac . . . . . . . . . . . . . . . . . . . . .4 Altitude . . . . . . . . . . . . . . . . . . . . .85 Altitude Entry .
I Initialization . . . . . . . . . . . .4-6,27,29 Installation, antenna . . . . . . . . . . . .79 Installation, wiring . . . . . . . . . . . . .78 IN Zoom Key . . . . . . . . . . . . . . . . . .2 Interface Formats . . . . . . . . . . .67,75 Interface Settings .
R Railroads, on Map . . . . . . . . . . .36-37 Receiver Status . . . . . . . . . . . .8,26-27 Reference W aypoints . . . . . . . . . . .44 Rivers, on Map . . . . . . . . . . . . .36-37 Roads, on Map . . . . . . . . . . . . .36-37 Rocker Keypad . . . .
V V elocity Made Good (VMG) . . . . . .86 W W arranty . . . . . . . . . . . . . . . . . . . . .iv W aypoints . . . . . . . . . . . .14,42-47,63 Comments . . . . . . . . . . . . . . . .46 Create By T ext . . . . . . . . . . . . .43 Create On Map . . . .
GPS III A 7/21/98 8:52 AM Page 91.
© 1997 GARMIN Corporation 1200 E. 151st Street, Olathe, KS 66062 US W eb Site Address: www .garmin.com GARMIN (Europe) Ltd., Unit 5, The Quadrangle, Abbey Park Industrial Estate, Romsey SO51 9AQ UK GARMIN (Asia) Corp., 4th Fl., No. 1, Lane 45, Pao-Hsing Road, Hsin T ien, T aiwan R.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Garmin GPS III A c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Garmin GPS III A - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Garmin GPS III A, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Garmin GPS III A va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Garmin GPS III A, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Garmin GPS III A.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Garmin GPS III A. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Garmin GPS III A ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
