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125 Man Rev B 7/23/98 11:47 AM Page i
GPS 125
Sounder
Marine
Navigator
ZOOM
Owner’s Manual
&
Reference
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125 Man Rev B 7/23/98 11:47 AM Page ii Software Version 2.0 or above © 1997 GARMIN Corporation 1200 E. 151st Street, Olathe, KS USA 66062 Tel: 913-397-8200 or 800-800-1020 Fax: 913-397-8282 Web Site Address: www.garmin.com GARMIN (Europe) Ltd. Unit 5, The Quadrangle, Abbey Park, Romsey, SO51 9AQ, U.K. Tel: 011-44-1794-519944 Fax: 011-44-1794-519222 GARMIN (Taiwan) Corp. 4th Fl., No. 1., Lane 45, Pao-Hsing Road, Hsin Tien, Taiwan R.O.C. Phone: 886.02.917.3773 Fax: 886.02.917.1758 All rights res
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125 Man Rev B 7/23/98 11:47 AM Page iii INTRODUCTION GPS 125 SOUNDER Overview Operator’s Manual Welcome to the easiest-to-use combination GPS/Depth Sounder on the water! The GPS 125 Sounder represents GARMIN’s continuing commitment to provide mariners with quality navigation and fishfinding information in a versa- tile, accurate, and user-friendly design which will be useful for years to come. It is important that you take the time to read through the operator’s manual to understand the operat
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125 Man Rev B 7/23/98 11:47 AM Page iv INTRODUCTION Caution The GPS system is operated by the government of the United States, which is solely responsible for its accuracy and maintenance. The system is subject to changes which could affect the accuracy and performance of all GPS equipment. Although the GPS 125 Sounder is a precision electronic NAVigation AID (NAVAID), any NAVAID can be misused or misinterpreted and, therefore, become unsafe. Use the GPS 125 Sounder at your own risk. To reduc
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125 Man Rev B 7/23/98 11:47 AM Page 1 INTRODUCTION Table of Contents SECTION ONE Introduction Glossary/Navigation Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4 SECTION TWO Getting Started Turning On and Initializing the Receiver . . . . . . . . . . . . . . . . . . . . . .5-7 Primary Page Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-9 Marking a Waypoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Po
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125 Man Rev B 7/23/98 11:47 AM Page 2 INTRODUCTION Glossary The GPS 125 Sounder is a powerful navigation tool that can guide you any- where in the world. To better understand its operation and capabilities, it may be helpful to review the basic terms and concepts briefly explained below. Other navigation and GPS definitions used in the manual are defined in the appropriate reference sections of the manual. Almanac Data Satellite constellation information (including location and health of satel
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125 Man Rev B 7/23/98 11:47 AM Page 3 INTRODUCTION Glossary Latitude The north/south measurement of position perpendicular to the earth’s polar axis. Longitude An east/west measurement of position in relation to the Prime Meridian, an imagi- nary circle that passes through the north and south poles. Position An exact, unique location based on a geographic coordinate system. Sensitivity A measure of how sensitive the sounder is to sonar echoes. Speed Over Water (SOW) The speed you are travelin
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CROSSTRACK ERROR DTK BRG TRK 125 Man Rev B 7/23/98 11:47 AM Page 4 INTRODUCTION Navigation Basics The GPS 125 Sounder provides steering guidance and navigation information using degrees, a measurement mea- sured in a clockwise direction from a north reference. North is described as 000º, east as 090º, south as 180º, and west as 270º. The diagram and compass rose below provide a graphic illustration of the navigation terms used by the GPS 125 Sounder. More information on basic navigation and GP
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125 Man Rev B 7/23/98 11:47 AM Page 5 GETTING Getting Started with Your GPS STARTED Welcome to the exciting world of GARMIN GPS! The GPS 125 Sounder represents GARMIN’s continuing Initialization commitment to provide marine users with quality navi- gation information in a versatile, user-friendly design they will enjoy for years to come. To get the most out of your GPS receiver, be sure to read through the ini- tialization and Getting Started sections of this manual, and refer to the reference
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125 Man Rev B 7/23/98 11:47 AM Page 6 GETTING Initializing the Receiver STARTED The receiver is shipped from the factory in AutoLocate™ mode, which enables the GPS 125 Initialization Sounder to determine its location anywhere in the world. To speed up the initialization process, we recom- mend using EZinit described below, which will usually provide a fix in a few minutes. Before you initialize, make sure your GPS 125 Sounder unit, antenna, and transducer have been cor- rectly installed on you
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125 Man Rev B 7/23/98 11:47 AM Page 7 GETTING 2. Use the key to scroll through the list options until D STARTED the country of your present position appears. 3. Use U to highlight the country/state/region you’re in. Initialization If the country you’re in is not listed, select another country within 500 miles of your present position. 4. Press to finish. F The GPS 125 Sounder will now begin searching for the appropriate satellites for your location and should acquire a position within a few mi
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125 Man Rev B 7/23/98 11:47 AM Page 8 GETTING Primary Pages STARTED The GPS 125 Sounder uses six primary “pages” to give you information. The pages are arranged in a con- Primary Pages tinual loop and can be easily viewed in forward or reverse order by pressing either the J or Q key. Before we start the tour, let’s briefly look at these pages. J Q Satellite Page The Satellite Page shows satellite positions and signal strength. Satellite positions are shown using a “birds-eye-view” display. Sig
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125 Man Rev B 7/23/98 11:47 AM Page 9 GETTING Map Page STARTED The Map Page acts as a window that allows you to view your position, the “path” you have traveled over, Primary Pages and nearby waypoints. A diamond icon in the center of & Backlighting the screen represents your present position. As you move, you will see a thin line, called a track log, appear along the path you have just covered. Names of stored waypoints can also be shown on the map. The bottom corners of the page will always
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125 Man Rev B 7/23/98 11:47 AM Page 10 GETTING Getting Started Tour STARTED Now that your GPS receiver has been initialized and you are familiar with the primary pages, it’s time to take Marking A a tour. This is a live tour and is to be conducted with Waypoint your unit installed and with the boat in the water. The tour will take you through the receiver’s basic features and functions as you move about on the water and assumes that the GPS 125 Sounder is turned on, initial- ized, and that you
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125 Man Rev B 7/23/98 11:47 AM Page 11 GETTING 4. Press the Rkey once to move the character highlight STARTED to the next character space. Marking 5. Repeat steps 3 and 4 until the word ‘DOCK’ is shown. Waypoint & 6. Press to complete entry of the name. F Map Page 7. Press the key twice to return the field highlight D to the ‘SAVE?’ field. 8. Press the key to confirm that you want to save F the position as a waypoint named ‘DOCK’. The mark position page will now be replaced by the Position Pa
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125 Man Rev B 7/23/98 11:47 AM Page 12 GETTING Using the Position and Map Pages (continued) STARTED Now let’s change the display to the Map Page and Position/Map watch the track log of our tour: Pages and 1. Press to change from the Position Page to the J GOTO Map Page. Your current position is shown as the diamond in the middle of the screen. The dark circle below the dia- mond represents the position you created, with the line between the two showing your track. 1. Once you have reached an
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125 Man Rev B 7/23/98 11:47 AM Page 13 GETTING Using the Highway Page STARTED Distance to Using the Bearing to Waypoint Waypoint Highway Page Current Speed Current Track Destination Waypoint Destination Waypoint “Finish Line” CDI Scale Position Diamond Velocity Made Good Estimated Time Enroute Digital Depth Pointer to Waypoint The GPS 125 Sounder’s Highway Page provides graphic steering guidance to a destination, with an A waypoint is directly emphasis on a straight-line course to the desired
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125 Man Rev B 7/23/98 11:47 AM Page 14 GETTING Using the Highway Page (continued) STARTED While navigating, you may use the Compass Page (see picture below left) instead of the Highway Page. Highway/ To select the Compass Page: Sounder Page & Cancelling GOTO 1. While viewing the Highway Page press twice. F The Compass Page will now become the displayed navigation page. This page provides a directional point- er to your destination by using a compass display to show direction of travel. This
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125 Man Rev B 7/23/98 11:47 AM Page 15 GETTING Using the Sounder Page (continued) STARTED The area of strongest sonar return (whiteline) is Sounder Page, displayed as light and dark checkering. Typically, the bottom will be the primary source of the whiteline. A Range Modes, & thin whiteline indicates a softer bottom while a thicker Sounder Zoom whiteline shows a harder bottom. A black line is used to show the point where water meets the whiteline. This black line will follow the bottom contou
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125 Man Rev B 7/23/98 11:47 AM Page 16 GETTING The zoom function is accessed by using the IN and STARTED OUT key when viewing the Sounder Page. Once activated, the zoomed picture becomes the Sounder Zoom Sounder Page display. Note: The zoom function can & Zoom only be deactivated by pressing the OUT key until the Window original zoom scale appears. The zoom function operates in either Auto range or Manual range. Zooming while in Auto will continue to follow the bottom contour, while zooming in
