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19000138.10A.QXD 11/11/99 8:46 AM Page 1
OWNERÕS MANUAL
AND REFERENCE
GPSMAP 235
TM
Sounder
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19000138.10A.QXD 11/11/99 8:46 AM Page 2 Software Version 4.01 or above Internal Database Version 3.00 © GARMIN Corporation TM G-chart cartridge data is copyrighted by Navionics Corporation and GARMIN Corporation and may not be copied or used for any other purpose without permission. © 1999 GARMIN Corporation GARMIN International, Inc. 1200 E. 151st Street, Olathe, KS 66062, USA Tel: 913.397.8200 or 1.800.800.1020 Fax: 913.397.8282 Website: www.garmin.com GARMIN (Europe) Ltd. Unit 5, The Q
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19000138.10A.QXD 11/11/99 8:46 AM Page i INTRODUCTION Warning Warning The GPSMAP 235 Sounder should not be used as a navigational aid or depth sounder to prevent collision, grounding, or boat damage, any of which could result in personal injury. For reasons of safety, we also recommend that you operate your boat at very slow speed if you suspect shallow water or submerged objects. GARMIN, GPSMAP, G-chart, AutoLocate, TracBack and PhaseTrac12 are trademarks of GARMIN Corporation and may only
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19000138.10A.QXD 11/11/99 8:46 AM Page ii Caution INTRODUCTION Cautions The GPS system is operated by the United States government, which is solely responsible for its accuracy and maintenance. The system is subject to changes which could affect the accuracy and performance of all GPS equipment. Although the GARMIN GPSMAP 235 Sounder is a precision electronic NAVigation AID (NAVAID), any NAVAID can be misused or misinterpreted and, therefore, become unsafe. Use the GPSMAP 235 Sounder at your
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19000138.10A.QXD 11/11/99 8:46 AM Page iii Designed for detailed electronic charting and complete depth sounding capabil- INTRODUCTION ity, the GARMIN GPSMAP 235 Sounder is a powerful navigation device that also Sounder Capabilities gives you the fishfinding information you need in fresh or saltwater. Precision Performance: • High-contrast, four-level gray, LCD screen • 12 channel receiver tracks and uses up to 12 satellites simultaneously for fast, accurate positioning • Differential-Ready—
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19000138.10A.QXD 11/11/99 8:46 AM Page iv Limited Warranty INTRODUCTION GARMIN warrants this product to be free from defects in materials and manu- Warranty facture for one year from the date of purchase. GARMIN will, at its sole option, repair or replace any components which fail in normal use. Such repairs or replace- ment will be made at no charge to the customer for parts or labor. The customer is, however, responsible for any transportation costs. This warranty does not cover fail- ures
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19000138.10A.QXD 11/11/99 8:46 AM Page v INTRODUCTION Preface Preface Congratulations on choosing one of the most advanced depth sounding and marine navigation systems available. The GARMIN GPSMAP 235 Sounder com- bines the proven performance of GARMIN GPS, powerful G-Chart electronic charting, and full featured depth sounding into one unit to create an unsurpassed marine navigation and fishfinding package. To get the most out of your new navigation and sounding system, take the time WARNING!
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19000138.10A.QXD 11/11/99 8:46 AM Page vi INTRODUCTION Before installing and using with your sounder, please check to see that your package includes the following items. If any parts are missing, please contact your Packing List GARMIN dealer immediately. *Standard Package: • GPSMAP 235 Sounder • External GPS Antenna and 30’ cable • Power/Data Cable • Mounting and Gimbal Bracket • Owner’s Manual • Quick Reference Card *For assembly part number 010-00119-01, a transom mount transducer is inclu
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19000138.10A.QXD 11/11/99 8:46 AM Page vii Warning ..................................................................................................................i Cautions.................................................................................................................ii Capabilities/Warranty .........................................................................................iii-iv GETTING STARTED Preface/Packing List ...................................................
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19000138.10A.QXD 11/11/99 8:46 AM Page viii Turns the unit on and off and controls 3-level INTRODUCTION P screen backlighting. Keypad Usage Scrolls the main pages in sequence and returns J display from a submenu page to a main page. Captures your present position and displays the M mark position window. Displays the GOTO waypoint window, allowing you to select the destination waypoint. Press G GOTO twice to select a destination waypoint from the map. The GPSMAP 235 Sounder’s advanced Display
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19000138.10A.QXD 11/11/99 8:46 AM Page 1 Initializing the Receiver Before you use your GPSMAP 235 for the first time, you’ll need to “initialize the GETTING STARTED receiver.” Initialization is the process in which the receiver collects satellite data and Initialization establishes its (your) present position. Follow the initialization process described below, which will usually provide a position fix in about a minute. Before you initialize, make sure the sounder and antenna have been corre
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19000138.10A.QXD 11/11/99 8:46 AM Page 2 Initializing the Receiver (con’t.) The Map Page will appear, prompting you to select your approximate present posi- GETTING STARTED tion with the map cursor. Initialization 1. Use the keypad to move the map cursor to a location close to your present position. If you R have difficulty identifying your exact position, use the key to zoom to a lower map scale. I 2. Press to confirm your selection. T The sounder will now begin searching for the appropriate
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19000138.10A.QXD 11/11/99 8:46 AM Page 3 Getting Started Tour The GARMIN GPSMAP 235 Sounder is a powerful electronic navigation and GETTING STARTED depth sounding system that provides detailed chart coverage and convenient con- trol of many advanced features right from the screen display. This tour is designed Power On/Screen Contrast to take you through the basic pages and functions of the system using the simula- tor mode. Once you’re familiar with the main pages and features of the unit, r
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19000138.10A.QXD 11/11/99 8:46 AM Page 4 Status Page GETTING STARTED Status Field Status Page/Simulator Mode Satellite Horizontal Accuracy Sky View Dilution of Precision Signal Strength Indicators Status Bar Water Depth The Status Page provides a visual reference of satellite acquisition and receiver status, with a signal strength bar graph and a satellite sky view in the center of the page. Each page of the sounder features an options menu, which gives you access A B to other functions and
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19000138.10A.QXD 11/11/99 8:46 AM Page 5 GETTING STARTED Page Sequence/Position Page The satellite Status Page is one of five main pages used in the sounder. All five pages are linked together in a simple chain, which allows you to scroll through the pages in either direction using the and keys. To continue the tour, let’s J Q move on to the next page, the position page. To scroll to the next page in sequence: 1. Press the key. J Compass Tape Data Position Page Fields The Position Page shows
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19000138.10A.QXD 11/11/99 8:46 AM Page 6 Marking a Position To mark your present position: GETTING GETTING S ST TAR ARTED TED 1. Press the key. The mark position page will appear, with a default three-digit M Using the GOTO Marking a Position Key waypoint name, symbol, position, and depth. 2. Use the keypad to highlight the waypoint name field (001) and press . R T 3. Press the LEFT ARROW of the keypad to clear the name field. R 4. Use the keypad to enter the name ‘DOCK,’ using the UP and DOW
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19000138.10A.QXD 11/11/99 8:47 AM Page 7 Sounder Page GETTING STARTED Data Field Range Mode Sounder Page Fish Arch Thermocline Whiteline Transducer Frequency The Sounder Page lets you use the GPSMAP 235 as a fishfinder. The top of the screen contains any of seven selectable data field options, while the middle of the page contains a right-to-left moving sonar image of the water beneath your boat. (Note: Items appear on the screen as they pass under your transducer. Those A B objects appearing
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19000138.10A.QXD 11/11/99 8:47 AM Page 8 Range Modes The unit uses three range modes on the Sounder Page: auto, manual, and win- GETTING STARTED dow. Auto mode displays the most information possible while continuously showing the bottom. Manual mode lets you select the displayed depth. Window Range Modes mode allows you to define a starting depth and length of the range window,. but must be started from the sounder options menu (see page 31). To switch from auto to manual mode: 1. Press the k
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19000138.10A.QXD 11/11/99 8:47 AM Page 9 Zoom Feature The zoom feature allows you to view a smaller portion of the complete range in GETTING STARTED greater detail. Zoom Feature The zoom feature operates in auto or manual mode. Auto zoom will follow the bottom contour while manual zoom will display the selected depth. For more on the zoom feature, see pages 26-27. To use the zoom feature: 1. While viewing the Sounder Page, press . The zoomed part of the display I (always the bottom part) show
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19000138.10A.QXD 11/11/99 8:47 AM Page 10 Map Page Data GETTING STARTED Fields Map Page Boat Symbol Map Scale The Map Page combines digital chartplotting with a user-selectable display of navigation data, and a built-in worldwide database. It will also be the page you use most to create and edit waypoints and routes. Before we take off on a practice route, let’s take a brief look at its various features and displays. A B The map display, located in the middle of the Map Page, shows your boa
