Garmin GPSMAP 198C Owner's Manual
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Garmin GPSMAP 198C Owner's Manual

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Summary of Contents for Garmin GPSMAP 198C

  • Page 1 GPSMAP 198C Sounder ® chartplotting receiver owner’s manual...
  • Page 2 Information in this document is subject to change without notice. Garmin reserves the right to change or improve its products and to make changes in the content without obligation to notify any person or organization of such changes or improvements. Visit the Garmin Web site (www.garmin.com) for current updates and supplemental information concerning the use and operation of this and other Garmin products.

  • Page 3: About This Manual

    Find Menu, navigating a route, and using waypoints. The Main Pages section provides detailed explanations about each page in the GPSMAP 198C Sounder and step-by-step directions on using the pages. The Main Menu section provides detailed explanations about the Main Menu and how to use it to configure your unit.

  • Page 4: Table Of Contents

    Sonar Tab ... 68 Systm (System) Tab ... 69 Units Tab ... 70 Comm (Communications) Tab ... 72 Alarm Tab ... 76 Using Sonar ...78 Sonar Page ... 78 Sonar Tab Options ... 85 Understanding Sonar ... 89 GPSMAP 198C Sounder Owner’s Manual...
  • Page 5 Appendix ...92 Specifications ... 92 Installing the GPSMAP 198C Sounder ... 93 Mounting the GPSMAP 198C Sounder ... 94 Installing the Transducer ... 96 Care Information ... 98 Connecting the Power/Data Cable ... 99 Interfacing ... 100 Installing and Removing Data Cards ... 101 Satellite Information ...

  • Page 6: Warning

    The Global Positioning System (GPS) is operated by the United States Map Data Information: One of the goals of Garmin is to provide customers with the most complete and accurate cartography that is available to us at a reasonable cost. We use a combination of governmental and private data sources, which we identify in product literature and copyright messages displayed to the consumer.

  • Page 7: Basic Operation

    ASIC PERATION Initializing the Receiver The first time you turn on the GPSMAP 198C Sounder, the receiver must be given an opportunity to collect satellite data and establish its present location. To ensure proper initialization, the GPSMAP 198C Sounder is shipped from the factory in AutoLocate Mode.
  • Page 8 • Solid signal strength bars—the receiver is ready to use. When the receiver has collected information from at least three satellites, the top of the screen shows either “Ready 2D or 3D”, and the GPSMAP 198C Sounder is ready for use. GPSMAP 198C Sounder Owner’s Manual...

  • Page 9: Simulator Mode

    Simulator Mode. While in Simulator Mode, a “Running Simulator” message appears after 2 minutes of inactivity. Keep in mind that the GPSMAP 198C Sounder does not track satellites in Simulator Mode, and this mode should never be used for actual navigation.

  • Page 10: Adjusting The Backlight

    You can adjust this level by pressing up or down on the ROCKER. If you press POWER one more time, the backlight is at the maximum setting. 3. Press ENTER or QUIT when finished. GPSMAP 198C Sounder Owner’s Manual...

  • Page 11: Interface Keys

    • Press and hold at any time to mark your current location as a waypoint. MOB Key • Press and hold for MOB waypoint. GPSMAP 198C Sounder Owner’s Manual ASIC PERATION NTERFACE IN/OUT Zoom Keys •...

  • Page 12: Entering Data And Selecting Options

    Entering Data and Selecting Options You can select and start options, and enter data to customize the GPSMAP 198C Sounder to fit your requirements. Use the ENTER key and the ROCKER to select options, enter names and numbers in data fields, and start your selections.

  • Page 13: Using The Map Pointer

    Current location Map Zoom Range GPSMAP 198C Sounder Owner’s Manual ASIC PERATION To pan the map: 1. Use the IN/OUT keys to select a map zoom range. 2. Use the ROCKER to move the pointer. A data field appears...

  • Page 14: Creating And Using Waypoints

    REATING AND SING AYPOINTS Creating and Using Waypoints The Garmin GPSMAP 198C Sounder stores up to 3,000 alphanumeric waypoints with a user-defined symbol, comments, and depth available for each waypoint. Waypoints can be created using two basic methods: ENTER/MARK Key—marks your present location, and provides options to select a map position or map item from the Map Page.

  • Page 15: Creating Waypoints Graphically

    ENTER. When selecting a location or map item, a description of the point, its distance and bearing from your current location, and the latitude/longitude of the pointer is shown along the top of the map. GPSMAP 198C Sounder Owner’s Manual ASIC PERATION REATING AND To create a new waypoint graphically: 1.

  • Page 16: Man Overboard (Mob)

    ASIC PERATION OARD Man OverBoard (MOB) The GPSMAP 198C Sounder’s Man OverBoard function (MOB) simultaneously mark and set a course back to the marked location for quick response to emergency situations. The MOB function allows you to quickly start navigation back to a location.

  • Page 17: Reviewing And Editing Waypoints

    User or Proximity sub tabs. 2. Press ENTER to show the Waypoint Edit Page. GPSMAP 198C Sounder Owner’s Manual 3. From the Waypoint Edit Page, change the name, symbol, comment, location coordinates, or depth for the selected waypoint.

  • Page 18: Navigating To A Destination

    If you have a point highlighted on a list or the map, Go To <point name> appears in addition to Go To Point. The Go To function is accessed from any list of points or graphically from the Map Page. GPSMAP 198C Sounder Owner’s Manual...

  • Page 19: Selecting A Go To Graphically

    Map Page: an existing waypoint, an on-screen map item such as roads, rivers, cities, and navaids, or a new map point. If you are selecting a map item as the Go To destination, the GPSMAP 198C Sounder automatically uses the name of the map item, but the point is not stored in the waypoint list.
  • Page 20 TracBack route leads you back to the oldest stored track log point, so it is a good idea to clear the existing track log before you start your current trip. You must save a track before using the Follow Track option. GPSMAP 198C Sounder Owner’s Manual...
  • Page 21 To change the name of the saved track, highlight the name field, and press ENTER. Make your changes and press ENTER. GPSMAP 198C Sounder Owner’s Manual To show the track on the Map and Highway Pages, highlight the check box to the left of Show on Map and Highway, and press ENTER.
  • Page 22 4. To stop TracBack navigation, press NAV, highlight Stop Navigation, and press ENTER. When a TracBack is active, the GPSMAP 198C Sounder takes the track log currently stored in memory and divides it into segments called legs. Up to 254 temporary turns (BEGIN, TURN 1, TURN 2, TURN 3,..., TURN X, END) are created to mark the most...

  • Page 23: Routes

    All of the route functions are accessed through the Main Menu or the NAV key. Route Tab GPSMAP 198C Sounder Owner’s Manual To create a route using the Route Edit Map Page: 1. Press MENU twice to show the Main Menu.
  • Page 24 4. Press MENU, select Edit as Text, and press ENTER. 5. Use the ROCKER to highlight the first field under the word Waypoint, and press ENTER. Choose the category you want to add a route point from. GPSMAP 198C Sounder Owner’s Manual...

  • Page 25: Find

    Press QUIT to return to the Route List Page. Choose a waypoint from either the By Name or Nearest tab list. GPSMAP 198C Sounder Owner’s Manual Find The FIND key searches the unit for user waypoints, map items, and any optional BlueChart or MapSource information loaded on a data card.
  • Page 26 • Nearest To Other—centers your search around another map location. • Nearest To Next—centers search from the next point of your active route. • Nearest To Destination—centers search from the last point of your active route. GPSMAP 198C Sounder Owner’s Manual...

  • Page 27: Additional Information

    2. Using the ROCKER, highlight a category from the list, and press ENTER. 3 From the search results list, press MENU, highlight an option, and press ENTER. Find Menu Options GPSMAP 198C Sounder Owner’s Manual ASIC PERATION Additional Information Items located using the Find feature have information about the point available.

  • Page 28: Dsc

    The chartplotter repeats the call properties received from the VHF radio on the chartplotter. The GPSMAP 198C Sounder requires input from a DSC enabled VHF radio to show position, and sound/show alerts from a Distress Call or Position Report. Conversely, the VHF radio requires input from a GPS to transmit position coordinates for a Distress Call or Position Report.

  • Page 29: Understanding Position Reports

    Create Wpt button. To close the Notification Page, press QUIT. GPSMAP 198C Sounder Owner’s Manual When a Distress Call or Position Report is placed in the Call List and Log, the information on the Notification Page is retained.

  • Page 30: Dsc Directory

    When a Distress Call, Position Report, or Directory item is named, the name is attached to that particular MMSI number. If a name is used, all DSC entries of the same MMSI number show the name. GPSMAP 198C Sounder Owner’s Manual...

  • Page 31: Navigating To A Position Report Or Distress Call

    1. Highlight the call on the Call List or Log, and press NAV. 2. With Go To MMSI/Name or DSC highlighted, press ENTER. Navigating to a DSC Call GPSMAP 198C Sounder Owner’s Manual Setting up DSC The DSC Setup tab turns DSC chartplotter information screen On and Off.

  • Page 32: Main

    Options Menu. Use the ROCKER to select an item from the options menu and press ENTER. Many of the menus in the GPSMAP 198C Sounder are arranged in a tab layout. Use the ROCKER to move left or right from tab to tab.

  • Page 33: Map Page

    Name Map Page shown using optional MapSource data. The GPSMAP 198C Sounder system starts in the Position Mode, with your location centered on the Map Page. When sufficient map coverage is not available to keep your location centered, the position triangle moves toward the edge of the screen.
  • Page 34 ENTER to show details of the map item. When using BlueChart or MapSource data, additional information tabs appear. Use the ROCKER to highlight the individual tabs, and shows additional information and options. 3. Press QUIT to re-center your location on-screen. GPSMAP 198C Sounder Owner’s Manual...

  • Page 35: Selecting Map Zoom Ranges

    4. Press ENTER to confirm the new waypoint using the default three-digit name and symbol. For more information about waypoints, see GPSMAP 198C Sounder Owner’s Manual Selecting Map Zoom Ranges The Map Page has 28 available range scales from 20 ft to 800 mi (5 m to 1200 km.) The map zoom range is controlled by the IN and...

  • Page 36: Map Page Options

    20 mi, with more detailed coverage available through the use of the optional BlueChart or MapSource data. The GPSMAP 198C Sounder shows cartography as long as there is chart information available for the range you have selected. Map coverage conforms to the following conditions: •...
  • Page 37 Page is now maximized with no data fields. 2. To show the data fields again, press MENU, highlight Show Data, and press ENTER. GPSMAP 198C Sounder Owner’s Manual Change Numbers—specifies the type of data shown in each data field used on the Map Page.
  • Page 38 Press QUIT to finish. Coordinates Distance and Map Pointer Full screen map shown (with BlueChart data) GPSMAP 198C Sounder Owner’s Manual Pointer Bearing...

  • Page 39: Compass Page

    • All Map Defaults—restores settings back to factory settings for all tabs. Turn Declutter On/Off—toggles between showing BlueChart spot soundings and map outlines for easier viewing. GPSMAP 198C Sounder Owner’s Manual Compass Page The Compass Page provides graphic steering guidance to a for more destination waypoint, with an emphasis on the bearing to your destination and current direction of travel.

  • Page 40: Numbers Page

    Bearing Bearing Pointer The GPSMAP 198C Sounder’s Compass Page features a menu that provides access to layout and data field options. The data window, located at the top of the page, provides a user-selectable layout of various types of useful data. Each data field can be configured to show several data options.

  • Page 41: Highway Page

    Numbers or Defaults. Press QUIT to finish. GPSMAP 198C Sounder Owner’s Manual Highway Page The GPSMAP 198C Sounder’s Highway Page provides graphic steering guidance to a destination waypoint, placing greater emphasis on the straight-line course, and the distance and direction you are off course.
  • Page 42 Press either the IN or OUT key to increase or decrease the zoom range. Highway Page Options The GPSMAP 198C Sounder’s Highway options page defines the data fields and selects the waypoints and tracks shown. The data window, located at the top of the page, provides a user-selectable layout of various types of data.

  • Page 43: Active Route Page

    field used. For detailed instructions on changing the data fields and layout of the Highway Page, see page GPSMAP 198C Sounder Owner’s Manual Active Route Page The Active Route Page shows each point of the active route, with the point name, distance and choice of Course, ETA, Fuel, Leg Distance, Leg Fuel, Leg Time, Sunrise, Sunset, or Time To for each point from your present location.

  • Page 44: Active Route Page Options

    The active leg defines the current from and to waypoints. for instructions (same To re-evaluate an active route: 1. From the Active Route Page, press MENU. 2. Using the ROCKER, highlight Re-evaluate and press ENTER to recalculate. GPSMAP 198C Sounder Owner’s Manual...

  • Page 45: Main Menu

    The GPSMAP 198C Sounder’s Main Menu provides access to various waypoint, system, navigation, interface management, and setup menus. The 19 Menu tabs are divided into categories by function. The Main Menu is available from any page in the system, and is accessed by pressing MENU twice. See additional instructions on changing settings and entering data.

  • Page 46: Waas Capability

    Sky View Signal Strength Bars The status field indicates a 2D or 3D, when the GPSMAP 198C Sounder has collected the necessary data from satellites to calculate a fix. The unit then updates the location, date, and time. You can use the sky view to help determine if any satellites are being blocked, and whether you have a current location fix...
  • Page 47 WAAS satellites are numbered 33 or higher when viewing the sky view on your GPSMAP 198C Sounder. Initial reception of the WAAS signal can take up to 15-20 minutes, then 1-2 minutes afterwards. When WAAS differential correction has been received...
  • Page 48 The SNR depends on the mounting of your DGPS receiver and the distance from the DGPS transmitting station. If no optional DGPS receiver is used with the GPSMAP 198C Sounder, the DGPS Rcvr field shows Off. GPSMAP 198C Sounder Owner’s Manual...

  • Page 49: Tide Tab

    1. Press MENU. 2. Using the ROCKER, highlight an option, and press ENTER. NOTE: If a DGPS receiver is attached to the unit and Garmin DGPS, RTCM In/NMEA Out, or Other DGPS is enabled on Port 2, WAAS is automatically disabled (WAAS Off). It is not possible for the GPSMAP 198C Sounder to receive WAAS and DGPS corrections at the same time.
  • Page 50 To select the nearest tide station from you current location: 1. From the Tide tab, highlight the At field, and press ENTER. 2. Highlight the station of the list, and press ENTER twice. Current Time Bar Current Tide Height Bar MLLW Night GPSMAP 198C Sounder Owner’s Manual...
  • Page 51 “None Found.” Use the Nearest To Other Find option and select a location closer to a tide station. GPSMAP 198C Sounder Owner’s Manual To select a tide station from the map: 1. When the search results appear, press FIND, highlight Tide Stations, press ENTER, and then press MENU.

  • Page 52: Trip Tab

    The Trip tab shows the Trip Odometer, Moving Average speed, Total Average speed, Maximum Speed, Stopped Time, Moving Time, Total Time, and Odometer. To reset the data, choose from Reset Trip, Reset Max Speed, Reset Odometer, or Reset All, and pressing ENTER. mode. GPSMAP 198C Sounder Owner’s Manual...

  • Page 53: Celes (Celestial) Tab

    Sun Position Overhead (90°) Horizon (0°) 70° 45° GPSMAP 198C Sounder Owner’s Manual To choose a position: 1. From the Celes tab, highlight the At field, and press ENTER. 2. From the Find list highlight any category, except Other Location, and press ENTER. If you want to reference a Find item, select from the Find list, and press ENTER.

  • Page 54: Points Tab

    The sub tabs also provide a continuously updated proximity waypoint alarm function that can be used to define an alarm circle around items such as submerged hazards or shallow waters. Sub Tabs Main Menu Tabs GPSMAP 198C Sounder Owner’s Manual...

  • Page 55: User Waypoint List

    User page, with the stored waypoints arranged in alphanumerical order. GPSMAP 198C Sounder Owner’s Manual The following options are available from the User submenu on the Points tab: •...
  • Page 56 1. Use the ROCKER to highlight the waypoint to delete, and press MENU. 2. Highlight Delete Waypoint, and press ENTER. You can also highlight the waypoint, press ENTER, then highlight Delete, and press ENTER. 3. Press ENTER to confirm the deletion warning. GPSMAP 198C Sounder Owner’s Manual...

  • Page 57: Proximity Waypoint List

    2. Use the ROCKER to highlight Delete All, and press ENTER. 3. Highlight OK, and press ENTER to confirm. GPSMAP 198C Sounder Owner’s Manual Proximity Waypoint List The Proximity list allows you to define an alarm circle around a stored waypoint location, and can be used to help you avoid reefs, rocks, or restricted waters.
  • Page 58 4. Use the ROCKER to highlight OK, and press ENTER. The following options are available from the Proximity sub tab of the Points tab: • Delete Alarm—removes a selected waypoint from proximity list. • Delete All—removes all waypoints from proximity list. GPSMAP 198C Sounder Owner’s Manual...

  • Page 59: Routes Tab

    Routes Tab The GPSMAP 198C Sounder Route List Page shows all the routes currently stored in memory, along with a descriptive name for each route. After a route has been created, it can be started and used for navigation with the NAV key. A route can be followed in the...
  • Page 60 To enter a custom route name: 1. From the Route Review Page, highlight the name field, and press ENTER to begin editing. 2. Use the ROCKER to enter a name. Press ENTER when finished. GPSMAP 198C Sounder Owner’s Manual Data Fields Route Points Data Totals...

  • Page 61: Route Review Menu Options

    This allows you to review each point on the route by pressing ENTER repeatedly. Route Review Options Menu GPSMAP 198C Sounder Owner’s Manual Route Review Menu Options Menu options available from the Route Review Page are Edit on Map, Add Before, Remove, and Trip Planning.
  • Page 62 5. Repeat steps 3 and 4 to insert additional waypoints, or press QUIT to finish. The GPSMAP 198C Sounder’s route edit mode also allows you to insert a new route waypoint in any route leg using the map pointer. To insert a new waypoint between two existing route waypoints: 1.
  • Page 63 Nearest tab and press MENU. With Select From Map highlighted, press ENTER. Use the zoom IN and OUT keys, and the ROCKER to highlight a waypoint on the map, and press ENTER. GPSMAP 198C Sounder Owner’s Manual Drag the route leg to an existing waypoint (shown),...
  • Page 64 To delete a route: 1. From the Route Review Page, press MENU. 2. Highlight Delete Route, press ENTER, and press ENTER again to confirm the deletion. GPSMAP 198C Sounder Owner’s Manual Trip Planning...

  • Page 65: Track Tab

    The Active sub tab is for the active log (the log currently being recorded). It shows track memory used and current settings. Active Track Tab GPSMAP 198C Sounder Owner’s Manual Saved Sub Tab The Saved sub tab shows and manages a list of any saved track logs, allows for TracBack activation, and Map Page of saved logs.
  • Page 66 For the Saved tab, the following menu options are available: Review On Map—shows the saved track log on a Track Map Page. Delete Track—deletes highlighted saved track log from memory. Delete All—deletes all saved track logs from memory. GPSMAP 198C Sounder Owner’s Manual...

  • Page 67: Dsc Tab

    Saved list and NAV is pressed. GPSMAP 198C Sounder Owner’s Manual DSC Tab Digital Selective Calling (DSC) uses marine VHF radio and Global Positioning System (GPS) technologies to transmit and receive location information. DSC is used by mariners to assist them in two major areas: Distress Calls and Position Reporting.

  • Page 68: Card Tab

    The Card tab contains options for saving waypoints, routes and tracks to a data card. When data is saved to a data card, it can be exchanged with other compatible units and Garmin’s MapSource PC program. To transfer data to/from a data card: 1.

  • Page 69: Pages Tab

    Use the ROCKER to highlight the First page option, and press ENTER. Highlight the page you want to appear first, and press ENTER. GPSMAP 198C Sounder Owner’s Manual You can also press MENU, choose from one of the following, and press ENTER: •...

  • Page 70: Map Tab

    Data Card Maps option box shows a list of the optional BlueChart/MapSource data loaded on the data card. Each area is described by name and can be deselected if you do not want to show the data on the Map Page. GPSMAP 198C Sounder Owner’s Manual...

  • Page 71: Waypoints Sub Tab

    ENTER, and use the ROCKER to scroll up, down, left, and right, or press MENU and choose a scroll option. GPSMAP 198C Sounder Owner’s Manual Waypoints Sub Tab The Waypoints and Active Route options each contain adjustments for Text and Zoom.

  • Page 72: Points Sub Tab

    Map Page. Some types of data only show up to specific zoom ranges. Navaids Sub Tab • Symbol Set—Auto, Garmin, NOAA, International: controls a navaid symbol set. • Text Size—Small, Medium, and Large: controls the screen size of the name.
  • Page 73 • Zoom—Auto, Off, 120 ft-800 mi: sets the maximum zoom range the feature should appear on the Map Page. Some types of data only show up to specific zoom ranges. GPSMAP 198C Sounder Owner’s Manual Other Sub Tab • Accuracy Circle—On/Off: toggles the circle On and Off.

  • Page 74: Hiway (Highway) Tab

    The Sonar tab contains setup options for the Sonar Page. The Sonar page Page is not active if you do not have a transducer connected. Refer to the “Using Sonar” section on sonar setup options. page 78 for more information on GPSMAP 198C Sounder Owner’s Manual...

  • Page 75: Systm (System) Tab

    Press MENU for the following options: • Defaults—restores settings on Systm page to default values. • All Unit Defaults—restores all settings to Garmin’s original setup values for the entire unit. YSTM...

  • Page 76: Units Tab

    If you are using a map or chart in conjunction with your GPS, make sure the settings under the Units tab of the GPSMAP 198C Sounder match that of the map or chart. This information should appear somewhere on the map or chart.
  • Page 77 GPSMAP 198C Sounder Owner’s Manual 70). User Mag Var allows • Distance, Speed and Elevation—allows you to select the...

  • Page 78: Comm (Communications) Tab

    Comm (Communications) Tab The Comm tab controls the input/output format used when connecting your GPSMAP 198C Sounder to external NMEA devices, a DGPS beacon receiver, a personal computer, or another Garmin unit. NOTE: If a DGPS receiver is used, WAAS capability is automatically turned to Off.
  • Page 79 2. Use the ROCKER to select a setting, and press ENTER. GPSMAP 198C Sounder Owner’s Manual To select a transfer mode: 1. Use the ROCKER to select Garmin Data Transfer in the Serial Data Format field. 2. Highlight the Transfer Mode field, and press ENTER.
  • Page 80 To have the unit automatically scan for a frequency: 1. With the unit set to Garmin DGPS or RTCM In/NMEA Out, use the ROCKER to highlight the Beacon field, and press ENTER.
  • Page 81 Press MENU, highlight Restart Scan, and press ENTER. GPSMAP 198C Sounder Owner’s Manual To manually enter a frequency and bit rate: 1. With the unit set to Garmin DGPS or RTCM In/NMEA Out, use the ROCKER to highlight the Beacon field, and press ENTER.

  • Page 82: Alarm Tab

    • Water Temperature—sets an alarm to sound when the transducer reports a temperature either above, below, inside, or outside the specified values. • Fish—sets alarm to sound when unit detects a fish of the specified symbol size. GPSMAP 198C Sounder Owner’s Manual...
  • Page 83 ENTER to finish. 5. If you want the alarm to appear and beep until acknowledged, highlight the Persist box, and press ENTER. GPSMAP 198C Sounder Owner’s Manual LARM If Persist is checked, an alarm stays active until acknowledged.

  • Page 84: Using Sonar

    GPSMAP 198C Sounder to use the sonar features. Sonar Page The Sonar Page is where your GPSMAP 198C Sounder becomes a powerful fishfinder/flasher. To view the Sonar Page, press PAGE or QUIT repeatedly until it shows. Fish are shown as colored arches or as fish icons.

  • Page 85: Using The Adjustment Menu

    1. Press MENU, highlight Adjustments and press ENTER. A list of all options and their current settings appears, with the selected option highlighted. GPSMAP 198C Sounder Owner’s Manual 2. Press up or down on the ROCKER to select the option, and press ENTER to access the adjustment window 3.
  • Page 86 1/4 the original depth scale. • 4X Zoom—shows only the 4X zoomed picture on the full screen. However, if Dual Frequency screen is set to Split, then a 50/200kHz split screen shows. GPSMAP 198C Sounder Owner’s Manual...
  • Page 87 Adjustment mode, you can control the view of the left side of the split. GPSMAP 198C Sounder Owner’s Manual Gain—allows you to control the sensitivity of the unit’s receiver. This provides some flexibility in what is seen on the screen.
  • Page 88 Scroll—adjusts the rate that the graph scrolls from right to left. If you are sitting still or the graph is moving too fast, slowing the scroll rate or pausing it can be beneficial. Frequency Adjustment Scroll Adjustment GPSMAP 198C Sounder Owner’s Manual...

  • Page 89: Sonar Page Options

    Sonar Page Options The GPSMAP 198C Sounder’s Sonar Page features a menu that provides access to additional functions and to layout and data field options. Sonar Page Menu Options To show the Sonar Page options: Press MENU. To select a menu option: Use the ROCKER to highlight the option, and press ENTER.
  • Page 90 This option is available only when a split screen zoom scale is selected. You can adjust the size of the split window anywhere from 1/4 to 3/4 width of the right half of the Sonar Page. GPSMAP 198C Sounder Owner’s Manual...

  • Page 91: Sonar Tab Options

    2. Using the ROCKER, highlight the field, and press ENTER. 3. Highlight the setting, and press ENTER. 4. Press QUIT to return to the Sonar Page or a previous page. GPSMAP 198C Sounder Owner’s Manual SING Fish Symbols—allows you to determine how the graph shows underwater targets and background information.
  • Page 92 This graphic Flasher shows structure and bottom returns much the same as a true Flasher. This feature is particularly useful when using Fish Symbols. GPSMAP 198C Sounder Owner’s Manual Color Bar Flasher...
  • Page 93 Full Range shows the entire scale of 2X or 4X left side split of Sonar Page. Maximum Detail shows what is shown on the left side of a split sonar screen. GPSMAP 198C Sounder Owner’s Manual Background Color—sets the background color on the Sonar Page to Black, Blue, or White.
  • Page 94 To restore default settings to the Sonar Tab: 1. Press MENU. 2. Highlight Page Defaults, and press ENTER. To restore default settings to the Sonar Tab: Press MENU. With Page Defaults highlighted, press ENTER. GPSMAP 198C Sounder Owner’s Manual...

  • Page 95: Understanding Sonar

    fish—sound is reflected back to the transducer. The transducer collects the reflected sound waves and sends the data to the GPSMAP 198C Sounder to process and show. The underwater data is shown on the Sonar Page in the order that it is returned: first returned is the first...

  • Page 96: Transducer Coverage

    10° Cone Angle (200 kHz) angle produces a coverage area of approximately a 6-foot diameter circle at a 30-foot depth. Dual frequency mode combines both frequencies to get the best coverage area and contour/depth readings. GPSMAP 198C Sounder Owner’s Manual...
  • Page 97 Thermoclines are shown as the weakest colors. One of the unique features offered by Garmin is See-Thru technology, which allows the GPSMAP 198C Sounder to hear both weak and strong signals simultaneously so as to identify fish returns under the toughest conditions, such as suspended in...

  • Page 98: Appendix

    GPS Accuracy: Position: <15 meters (49 feet), 95% typical* Velocity: 0.05 meters/sec steady state DGPS (USCG) Accuracy: Position: 3-5 meters (10-16 feet) with optional Garmin DGPS receiver, 95% typical* Velocity: 0.05 meters/sec steady state DGPS (WAAS) Accuracy: Position: <3 meters (10 feet), 95% typical* Velocity: 0.05 meters/sec steady state...

  • Page 99: Installing The Gpsmap 198C Sounder

    NSTALLING THE Suggested locations for mounting the external antenna. The Garmin antenna screws directly onto any standard 1" x 14- thread antenna mount. If you need to raise the antenna to avoid shading, try using a 1" x 14-thread extension mast available at most marine dealers.

  • Page 100: Mounting The Gpsmap 198C Sounder

    3. After the GPSMAP 198C Sounder unit is installed, connect the cable to the antenna connector on the back of the unit.
  • Page 101 Flush Mounting the GPSMAP 198C Sounder The GPSMAP 198C Sounder can be flush mounted on a flat panel. When flush mounting the GPSMAP 198C Sounder, be sure to choose an appropriately sized location for the unit (see unit...

  • Page 102: Installing The Transducer

    A 50/200 kHz dual frequency 40°/10° cone angle, temperature sensing, transom mount transducer is included in the GPSMAP 198C Sounder (with transducer) package. This transducer provides good all-around performance. GPSMAP 198C Sounder Owner’s Manual...
  • Page 103 The following diagram is for mounting the transducer included with the GPSMAP 198C Sounder with transducer package. If the transducer lead is too short, extension cables are available from your Garmin dealer. DO NOT cut the transducer lead or any part of the transducer cable, as this will void your warranty.

  • Page 104: Care Information

    PC (transferring it to MapSource.) Immersing the Unit in Water The GPSMAP 198C Sounder is waterproof to IEC Standard 60529 IPX7. It can withstand immersion in 1 meter of water for 30 minutes. Prolonged submersion can cause damage to the unit. After submersion, be certain to wipe and air dry the unit before reuse.

  • Page 105: Connecting The Power/Data Cable

    Connecting the Power/Data Cable The power/data cable connects the GPSMAP 198C Sounder to a DC system and provides interface capabilities for connecting external devices. The color code in the diagram below indicates the appropriate harness connections. Replacement fuse is a AGC/3AG - 3 Amp fuse.

  • Page 106: Interfacing

    Approved sentences—GPRMC, GPGGA, GPGSA, GPGSV, GPGLL, GPBOD, GPRTE, and GPWPL. Proprietary sentences—PGRME, PGRMZ, and PSLIB. The GPSMAP 198C Sounder accepts NMEA input with support for the DBT, DPT, MTW, and VHW sentences. The GPSMAP 198C Sounder also includes NMEA input with...

  • Page 107: Installing And Removing Data Cards

    Installing and Removing Data Cards The GPSMAP 198C Sounder uses optional Garmin marine BlueChart and MapSource data cards to show digital charts and maps on-screen. Data cards are installed in the card slot located at the bottom right of the unit. Data cards can be installed or removed at any time, whether the unit is on or off.

  • Page 108: Satellite Information

    Date, Time, and Current Location The GPS gets date and time information from the satellite’s on- board atomic clock. When the GPS receiver has achieved a 2D or 3D GPS location, the current location appears in the selected location format.

  • Page 109: What Is Waas

    3 vertical meters throughout the majority of the continental U.S. and portions of Alaska. For more information, go to http://gps.faa.gov/Programs/WAAS/waas.htm. NOTE: If you are using the GPSMAP 198C Sounder outside of the U.S.A., we recommend you turn off WAAS for the most accurate location fix.

  • Page 110: What Is A Maritime Mobile Service Identity (Mmsi)

    Distress Call. In order to obtain a Maritime Mobile Service Identity (MMSI) number, users must register their VHF radio with the FCC (Form 605). Garmin does not supply this number. How ARE MMSI assignments obtained? Non-commercial users (for example, recreational users who remain...

  • Page 111: Navigation Terms

    Course—the course between the active from and to waypoints. Depth—the depth below transducer. This field is active only if a transducer is connected to the GPSMAP 198C Sounder. Distance (Dist)—the distance from the current location to a destination.
  • Page 112 Voltage—current voltage reading being received by unit. Water Speed—the speed through the water. This field is only active if the GPSMAP 198C Sounder is receiving speed readings from a NMEA device. Water Temp—the water temperature. This field is only active if the GPSMAP 198C Sounder is receiving speed readings from a NMEA device.

  • Page 113: Messages

    Narrow the search using the city or postal code. Database Error—internal problem with the unit. Contact your dealer or Garmin Product Support to have the unit repaired. Deep Water—the water is deeper than the amount set in the Deep Water Alarm.
  • Page 114 The oldest track log points have been deleted. Transfer Complete—data transfer has been completed. Waypoint Already Exists—a waypoint with the same name already exists. Waypoint Memory Full—the unit has stored the maximum number of waypoints. GPSMAP 198C Sounder Owner’s Manual...

  • Page 115: Loran Td System

    Setup TD field, the active waypoint information reflects those changes. Since the GPSMAP 198C Sounder does not rely on the LORAN signal for navigation, it can reference a different GRI chain and/or secondary stations and still navigate to the location stored in memory.
  • Page 116 TD coordinate anywhere in the world. You must know your GRI chain number and secondary stations to create a LORAN TD position. For more information, read our LORAN TD Position Format Handbook, available at the Garmin Web site (www.garmin.com/support/userManual.jsp.) GPSMAP 198C Sounder Owner’s Manual...

  • Page 117: Optional Accessories

    MapSource CD-ROMs to a data card, either directly through your GPSMAP 198C Sounder using the PC Interface Cable, or with the Data Card Programmer. USB Data Card Programmer—programs blank data cards at high speed through a PC.

  • Page 118: Software License Agreement

    Product Registration link on our Home Page. Use this area to record the serial number (8-digit number located on the back of the box) in case your GPSMAP 198C Sounder unit is lost, stolen, or needs service. Be sure to keep your original sales receipt in a safe place or attach a photocopy inside the manual.

  • Page 119: Limited Warranty

    Garmin retains the exclusive right to repair or replace the unit or software or offer a full refund of the purchase price at its sole discretion. SUCH REMEDY SHALL BE YOUR SOLE AND EXCLUSIVE REMEDY FOR ANY BREACH OF WARRANTY.

  • Page 120: Fcc Compliance

    PPENDIX OMPLIANCE FCC Compliance The GPSMAP 198C Sounder complies with Part 15 of the FCC interference limits for Class B digital devices FOR HOME OR OFFICE USE. These limits are designed to provide more reasonable protection against harmful interference in a residential installation, and are more stringent than “outdoor”...

  • Page 121: Index

    Show 31 Shallow/Deep Water 76 Split Fields 35 Temperature 76 Date/Time 102 Alarm Tab 76 Daylight Saving Time 62 GPSMAP 198C Sounder Owner’s Manual Delete Fish Alarm 76 DSC Directory Item 24 Flasher 86 Depth Line 82 DGPS 103 Gain 81...
  • Page 122 Temperature Tab 68 Thermoclines 91 Satellite Location 102 Tide Stations 43 Satellite Sky View 102 Tide Tab 43 Selecting Options 6 Time Format 62 Shallow/Deep Water Alarm 76 Time Tab 62 Simulator Mode 3 Time Zone 62 GPSMAP 198C Sounder Owner’s Manual...
  • Page 123 Underwater Waypoints 84 Units Tab 70 Wiring Installation 99 Unit Defaults 69 Zoom Keys 5 WAAS 40, 103 Zoom Range 29 Disable/Enable 41 Zoom Settings 29 Waterproof 98 Water Speed 87 Water Temperature Alarm 76 GPSMAP 198C Sounder Owner’s Manual NDEX...
  • Page 126 For the latest free software updates (excluding map data) throughout the life of your Garmin products, visit the Garmin Web site at www.garmin.com. © Copyright 2005 Garmin Ltd. or its subsidiaries Garmin International, Inc. 1200 East 151 Street, Olathe, Kansas 66062, U.S.A.

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