Garmin GPSMAP 378 Owner's Manual
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Garmin GPSMAP 378 Owner's Manual

Garmin GPSMAP 378 Owner's Manual

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Owner's Manual
GPSMAP 378/478
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GPSMAP 478 shown

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  • Page 1 Owner’s Manual GPSMAP 378/478 chartplotting receiver GPSMAP 478 shown...
  • Page 2 All rights reserved. Except as expressly provided herein, no part of this manual may be reproduced, copied, transmitted, disseminated, downloaded or stored in any storage medium, for any purpose without the express prior written consent of Garmin. Garmin hereby grants permission to download a single copy of this manual onto a hard drive or other electronic storage medium to be viewed and to print one copy of this manual or of any revision hereto, provided that such electronic or printed copy of this manual must contain the complete text of this copyright notice and provided further that any unauthorized commercial distribution of this manual or any revision hereto is strictly prohibited.

  • Page 3: About This Manual

    The Using XM WX Weather section describes how to use XM WX Satellite Weather features on your GPSMAP 378/478. The Setting Up and Using Sonar section provides instructions on using a Garmin GSD 20 or GSD 21 Sounder Module with your GPSMAP 378/478. The Appendix contains specifications, optional accessories, maintenance information, and other product information.

  • Page 4: Table Of Contents

    Able of ontents Table of Contents Introduction ...i Caring for the GPSMAP 378/478 ... iv Warnings ... v Important Information ... vi Battery Warnings ... vi Getting Started ...1 Unit Overview ... 1 Charging the GPSMAP 378/478 ... 2 Turning On the GPSMAP 378/478 ...
  • Page 5 Appendix ...115 Specifications ... 115 Optional Accessories ... 116 Installation Information ... 117 Satellite Information ... 122 GPSMAP 378/478 Owner’s Manual ntroductIon What is Differential GPS (DGPS)? ... 122 LORAN TD Setup ... 124 Map Datums and Location Formats ... 126 Digital Selective Calling (DSC) ...

  • Page 6: Cleaning The Screen

    Avoid chemical cleaners and solvents that might damage plastic components. Cleaning the Screen The GPSMAP 378/478 screen should be cleaned using a soft, clean, lint-free cloth. Water, isopropyl alcohol, or eyeglass cleaner can be used if needed. If these are used, apply the liquid to the cloth and then gently wipe the screen with the moistened cloth.

  • Page 7: Warnings

    WARNING: This product, its packaging, and its components contain chemicals known to the State of California to cause cancer, birth defects, or reproductive harm. This Notice is provided in accordance with California’s Proposition 65. See GPSMAP 378/478 Owner’s Manual •...

  • Page 8: Important Information

    And Important Information 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 9: Getting Started

    With the optional GXM 30 antenna and a subscription to XM WX Satellite Weather, users have constant access to NEXRAD radar, lightning, wind speed, wave direction, and more. In addition, the GPSMAP 378/478 offers XM Satellite Radio capabilities featuring more than 160 digital channels of commercial-free music;...

  • Page 10: Charging The Gpsmap 378/478

    Charging the GPSMAP 378/478 Before using the GPSMAP 378/478, you might need to charge the battery. Plug the power cable into an external power source to charge. You can use the unit while it is charging. To charge the unit’s battery: 1. Lift the rubber weather cap to expose the power connector...

  • Page 11: Turning On The Gpsmap 378/478

    Turning On the GPSMAP 378/478 Before you turn on the GPSMAP 378/478, be sure the antenna is up as shown on page 1, and it has a clear and unobstructed view of the sky to receive satellite signals. The first time you turn on your GPSMAP 378/478, the GPS receiver must collect satellite data and establish its current location.

  • Page 12: Getting Satellite Signals

    The GPS Page appears while the unit is gathering satellite signals and acquiring a fix, which should take only a few minutes. While the GPSMAP 378/478 is getting satellite signals, the GPS Page shows the status as “Acquiring Satellites.”...

  • Page 13: Receiver Status

    • Green signal strength bars—the receiver has collected the necessary data from this satellite. When the GPSMAP 378/478 collects the necessary data from the best satellites in view to calculate a fix, the status field indicates the status of the receiver. The unit then updates the location, date and time.

  • Page 14: Gps Options

    The GPS receiver can lose satellite signals due to interference from such items as buildings, tunnels, and heavy tree cover. Monitoring the GPS status is recommended.

  • Page 15: Using The Gpsmap 378/478 Keypad

    Using the GPSMAP 378/478 Keypad PAGE/MODE Key • Press to cycle through main pages in sequence and exit a submenu page. • Press and hold to switch between Marine and Automotive Modes. QUIT Key • Press to cycle through main pages in reverse sequence, revert to the previous value in a data entry field, or cancel an unintended function.

  • Page 16: Using The Gpsmap 378/478

    (default) settings when you select Restore Defaults. Highlighted field On-screen buttons Cartography The GPSMAP 378 system contains preloaded U.S. inland freshwater cartography to its enhanced worldwide basemap information. The preloaded inland maps offer 50-meter shoreline resolution throughout the US, with even more detailed 10-meter resolution on select lakes.

  • Page 17: Selecting Options And Entering Data

    To select and activate an option: 1. From any page, press MENU. An options menu shows a list of optional features to that page. 2. Use the ROCKER to move the highlight up, down, right, or left on the menu to the option you want to select. 3. Press ENTER to select the feature. Another window with more options might appear. If so, select an option and press ENTER again. GPSMAP 378/478 Owner’s Manual ettIng tArted To exit a menu or return to the previous setting: Press QUIT. The QUIT key moves backward through your steps. Press QUIT repeatedly to return to the starting page. To select an on-screen button: On a page with on-screen buttons, use the ROCKER to highlight an on-screen button, and press ENTER.

  • Page 18: Restoring Default Settings

    Track, Alarms, Display, Sound, and Setup. For more information about the Main Menu, see the “Main Menu” section beginning on page To restore default settings: 1. Press MENU twice to open the Main Menu. 2. Use the ROCKER to highlight a tab, and then press MENU to open the options menu. Setup Tab Options Menu 3. Highlight Restore Default, and press ENTER. GPSMAP 378/478 Owner’s Manual...

  • Page 19: Using The Main Menu

    Using the Main Menu Use the Main Menu on your GPSMAP 378/478 to access various waypoint, system, navigation and interface management, and setup menus. Press the MENU key twice from any page to open the Main Menu. For more information, see the “Main...

  • Page 20: Using Simulator Mode

    Simulator Mode, you can view simulated weather information. NOTE: Do not try to navigate using Simulator Mode. When the unit is set to Simulator Mode, the GPS receiver is turned off. Any satellite signal strength bars shown are only simulations and do not represent the strength of actual satellite signals.

  • Page 21: Marine Mode Pages

    This section explains some of the more common operations you will perform with your GPSMAP 378/478. To switch usage modes: 1. Press and hold the PAGE/MODE key. The Usage Mode Menu appears. 2. Use the ROCKER to select either Automotive or Marine, and press ENTER. Marine Mode Pages Marine Mode has five main pages: Map, Compass, Highway, Active Route, and Position Data. An optional XM Audio Page can be enabled.

  • Page 22: Navigating To A Destination

    You can also start a saved track through the Track tab of the Main Menu. For information about tracks, see MOB (Man OverBoard)—creates a MOB waypoint and navigates to that location. For more information about MOB, see GPSMAP 378/478 Owner’s Manual page page...
  • Page 23 Navigate Menu 3. Follow the magenta route created on the Map Page. To stop navigation: 1. While navigating to a point, press NAV. 2. Highlight Stop Navigation, and press ENTER. 3. Highlight Resume Navigation, and press ENTER to resume navigation. GPSMAP 378/478 Owner’s Manual ArIne To start a new route using the Find Menu: 1. Press the NAV key to open the Navigate Menu. 2. Highlight Go To Point (or New Route when in Automotive Mode) and press ENTER to open the Find Menu. 3. From the Find Menu, highlight Waypoints and press ENTER.

  • Page 24: Man Overboard (Mob)

    MOB symbol is created, and the unit begins actively navigating to that point. Use any of the navigation pages to guide you back to the MOB point. The MOB waypoint is stored in the waypoint list and can be deleted like any other waypoint. GPSMAP 378/478 Owner’s Manual...

  • Page 25: Finding An Item

    15 to navigate a new route using the Find Menu. GPSMAP 378/478 Owner’s Manual Using the Find From Feature You can use the Find Menu to center your search around an item you just found. For example, you search for Restricted Areas and the search shows an “Anchoring Prohibited”...
  • Page 26 The Recently Found Page shows a list of the items you have searched for or gone to recently. To view recently found items: 1. Press FIND to open the Find Menu. 2. Highlight Recently Found, and press ENTER to open the list of recently found items. 3. Press MENU to show the options menu. 4. Select Show Find History to view the list of items you have searched for recently. 5. Highlight Remove Point, and press ENTER to delete the selected recently found point. GPSMAP 378/478 Owner’s Manual...

  • Page 27: Find Menu Options

    Map Feature Information Page 2. Press PAGE or QUIT to exit the information page. You can also highlight one of the on-screen buttons, and press ENTER. GPSMAP 378/478 Owner’s Manual Find Menu Options To view additional Find Menu options, press FIND, and then press MENU. The following options are available: • Enable Auto Arrange—automatically arranges the Find Menu.

  • Page 28: Creating And Using Routes

    Creating and Using Routes The GPSMAP 378/478 allows you to create and store up to 50 reversible routes, with up to 300 points each. Creating a New Route Use the Route tab to create a route by selecting waypoints from the Find Menu, or by selecting waypoints or map items from the Map Page.

  • Page 29: Navigating A Saved Route

    2. Highlight Navigate Route, and press ENTER. 3. Highlight a route, and press ENTER. Select a route from list GPSMAP 378/478 Owner’s Manual ArIne Editing a Route After you create a route, use the Route Review Page to edit, change the name, and review route points of a selected route.
  • Page 30 You can review each point on the route by pressing ENTER repeatedly. To add points to the route: 1. Highlight the Route tab on the Main Menu. 2. Select a route, and press ENTER. 3. Highlight the spot in the route that you want to add the new point. (The new point is added before the highlighted route point). 4. Press MENU. 5. Highlight Insert Waypoint, and press ENTER. The Find Menu opens for you to search for and select the point you want to add to the route. Route Review Page 6. In the Point Review Page, highlight OK, and press ENTER to add the new point to the route. GPSMAP 378/478 Owner’s Manual...
  • Page 31 Editing the route on the map 6. If the New Waypoint Page opens, edit the waypoint as needed, highlight OK, and press ENTER. 7. Repeat steps 4 through 6 until all points are added to the route. Press QUIT when finished. You can enter information about your trip so the GPSMAP 378/478 can estimate information about your trip. GPSMAP 378/478 Owner’s Manual ArIne To plan your route: 1. Open the Route Review Page options menu.

  • Page 32: Manually Transitioning To The Next Waypoint

    Active Route Page, and press MENU. Highlight Next Route Waypoint, and press ENTER to have the GPSMAP 378/478 start routing you to the next point in your route. Creating and Using Waypoints Waypoints are locations or landmarks you record and store in your GPS.

  • Page 33: Creating Waypoints Using The Map

    You can quickly create a waypoint using the Map Page. When you pan the map and move the arrow over a map item, you see a highlighted description of that item. The GPSMAP 378/478 uses the map item text shown on the map as the default name and symbol for the new waypoint.

  • Page 34: Creating A Waypoint By Entering Coordinates

    After you create and store a waypoint, you can modify, review, rename, move, or delete it at any time using the Waypoint Review and Waypoint Edit Pages. To access the Waypoint Review Page: Highlight a waypoint on the Map Page, and then press ENTER to open the Waypoint Review Page. If the waypoint is located on a map feature or MapSource or BlueChart g2 feature, the Waypoint Review Page might include additional tabs containing information about other features at that location Waypoint Review Page GPSMAP 378/478 Owner’s Manual...

  • Page 35: Adding A Waypoint To A Route

    When you are navigating to a destination, Add to Current Route opens. The selected waypoint is added to the current route before the route destination. GPSMAP 378/478 Owner’s Manual ArIne reAtIng And To add a waypoint to the end of the route: 1. Open the Waypoint Edit Page, and press MENU.

  • Page 36: Projecting A Waypoint

    To create a new waypoint by projecting its location: 1. Create a waypoint. The new waypoint uses the next available waypoint number and the receiver’s last known location as the default location. 2. Use the ROCKER to highlight Points from the vertical list of tabs and select a waypoint. Press ENTER. 3. Press MENU to open the New Waypoint Page options menu. 4. Highlight Project Location, and press ENTER. Project Location Menu 5. To change the location from which you are projecting the new waypoint, highlight the From field, and press ENTER. GPSMAP 378/478 Owner’s Manual...

  • Page 37: Editing A Waypoint

    The number of stored and available waypoints is shown at the bottom of the User sub tab. Stored waypoints are arranged in alphanumeric order. GPSMAP 378/478 Owner’s Manual ArIne reAtIng And User Points Tab To navigate (Go To) a waypoint from the Points tab: 1. Select the Points tab on the Main Menu, and then highlight...

  • Page 38: Organizing Waypoints Into Categories

    1. From any of the waypoint pages or the Points tab, press MENU to open the options menu. Name field 2. Select Edit Categories, and press ENTER. 3. Highlight Add, and press ENTER. Entering a new category 4. Use the ROCKER to enter a name for the category. 5. Highlight Save, and press ENTER. To assign a category to a waypoint: 1. Open the Waypoint Edit Page. (You can also change the category on the New Waypoint Page.) 2. Select the Category field, and press ENTER. 3. Select the category to which you want to assign the waypoint, and press ENTER. GPSMAP 378/478 Owner’s Manual...

  • Page 39: Deleting Waypoints

    1. With the Waypoint Categories window open, highlight the category you want to delete, and press MENU. Waypoint Categories Options Menu 2. Select Delete Category, and press ENTER. 3. Press ENTER again to finish deleting the category. GPSMAP 378/478 Owner’s Manual Deleting Waypoints Select the You can delete waypoints from the waypoint list on the Points tab category to or from the Waypoint Page.

  • Page 40: Proximity Points

    Because the unit only alerts for one of the overlap points, use caution when navigating in these areas. If you enter an alarm circle overlap, you are only alerted to the closest proximity waypoint. To turn proximity alarms on or off: 1. Highlight the Points tab on the Main Menu, and then select the Proximity sub tab. GPSMAP 378/478 Owner’s Manual...
  • Page 41 To add a proximity waypoint: 1. From the Proximity Points tab, use the ROCKER to highlight an empty line on the Proximity list, and press ENTER. The Find Menu opens. 2. Select a waypoint or point of interest from the Find Menu. 3. With OK highlighted, press ENTER to select the point. 4. Use the ROCKER to enter a distance value (up to 99.99 units), and press ENTER. GPSMAP 378/478 Owner’s Manual ArIne reAtIng And To clear one or all proximity waypoints from the list: 1. Highlight the Points tab on the Main Menu, and then select the Proximity sub tab. 2. Highlight the proximity waypoint to clear, and press MENU. Proximity Points Tab Options Menu 3. To clear a single alarm, highlight Remove Point, and press...

  • Page 42: Managing Your Tracks

    Map Page as you travel. The track log contains points along its path, including time, and location for each point. The track log starts recording as soon as the GPSMAP 378/478 gets a location fix. For the best results, clear the track log before you start traveling because when the track log is full, new track points overwrite the oldest track points.
  • Page 43 Clearing the Track Log 3. Highlight OK, and press ENTER. To save the entire track log: 1. Highlight the Track tab on the Main Menu, and then highlight the Active sub tab. 2. Select Save, and press ENTER. A message appears asking if you want to save the entire track. 3. Highlight Yes, and press ENTER. GPSMAP 378/478 Owner’s Manual ArIne To save a portion of the track log: 1. Highlight the Track tab on the Main Menu, and then highlight the Active sub tab. 2. Select Save, and press ENTER. 3. Highlight No, and press ENTER when a message appears. 4. Select a beginning point, and press ENTER.

  • Page 44: Saved Tracks

    • Delete All—erases all tracks from the unit’s memory. To edit a track: 1. Highlight the Track tab on the Main Menu, and then select the Saved sub tab. 2. Select a track to edit, and press ENTER. 3. Highlight the Name field, and press ENTER. Use the ROCKER to change the name, and press ENTER. 4. Select a different display color to show the track on the map. 5. Highlight the box next to Show on Map, and press ENTER. 6. To begin a TracBack, highlight TracBack, and press ENTER. 7. To view the track on the map, highlight Map, and press ENTER. Press QUIT to return to the Track tab. 8. Highlight OK, and press ENTER to save your changes. GPSMAP 378/478 Owner’s Manual...

  • Page 45: Navigating A Saved Track

    GPSMAP 378/478 Owner’s Manual ArIne TracBack Tips When a TracBack is initiated, the GPSMAP 378/478 divides the track into segments called legs. Up to 300 temporary turns are created to mark the most significant features of the track in order to duplicate your exact path as closely as possible.

  • Page 46: Marine Mode

    Page can be enabled. A Sonar Page is available when a GSD 21 Sounder Module is connected. Map Page When you turn on the GPSMAP 378/478, the Map Pages appears after the unit acquires a satellite signal. The position marker ( ) shows your current location on the map.
  • Page 47 To change the map page layout: 1. Press MENU to open the options menu. 2. Highlight Set Up Page Layout, and press ENTER. Selecting the Page Layout 3. Select a page layout option, and press ENTER. GPSMAP 378/478 Owner’s Manual ArIne To change a data field display: 1. Press MENU to open the options menu. 2. Highlight Change Data Fields, and press ENTER. 3. Highlight the data field to change, and press ENTER.

  • Page 48: Setting Up The Map Page

    4. Highlight a setting, and press ENTER. 5. Press PAGE or QUIT to exit. Viewing Additional Map Data Use the Map Information Page to view the data currently loaded on your GPSMAP 378/478 unit and data card. To review/change map information: 1. On the Map Page, press MENU. 2. Highlight Map Information, and press ENTER. The first page shows the map families stored on the data card and unit and whether they are shown on the Map Page.

  • Page 49: Zooming In And Out Of The Map

    To select a map zoom range (zoom in and out): Press the OUT key to zoom out; press the IN key to zoom in. Both the GPSMAP 378 and GPSMAP 478 have a built-in worldwide land database. The GPSMAP 378 contains detailed maps of the US inland lakes and the GPSMAP 478 contains built-in BlueChart g2 charts.

  • Page 50: Panning The Map

    When you zoom in Pan Mode, the arrow stays centered on the screen. When the arrow is stationary, fixed coordinates appear in the position field, and the distance and bearing from your present location update as you move. GPSMAP 378/478 Owner’s Manual...

  • Page 51: Clearing Unwanted Details From The Map

    2. Press ENTER to view more information about the point. The information and on-screen buttons shown vary depending on the type of item selected. In some cases, additional information tabs appear at the top of the information page or Waypoint Page. GPSMAP 378/478 Owner’s Manual ArIne 3. Use the ROCKER to highlight the extra tabs and view the information. 4. Select an on-screen button and press ENTER. Press QUIT to exit the information page. Map Feature Information Page Clearing Unwanted Details from the Map You can remove items from the Map Page (declutter the screen) to...

  • Page 52: Measuring Distance

    To measure the bearing/distance between two points: 1. On the Map Page, press MENU to open the options menu. 2. Highlight Measure Distance, and press ENTER. An on- screen arrow appears on the map at your present location with ENT REF below it. 3. Move the arrow to the reference point (the starting point that you want to measure from), and press ENTER. A push pin icon marks the starting point. 4. Move the arrow to the point want to measure to. The bearing and distance from the reference point and arrow coordinates appear in the data window at the top of the display. Push pn indicating the beginning point of the measurement Measure Distance GPSMAP 378/478 Owner’s Manual End point of measurement, labeled ENT...

  • Page 53: Compass Page

    The course to steer represents the direction to steer to get back to the course line. GPSMAP 378/478 Owner’s Manual If the arrow points up, you are going directly to the waypoint. If the arrow points any direction other than up, turn toward the arrow until it points up, and then continue in that direction.

  • Page 54: Using The Marine Timer

    4-minute preparation countdown, and finally a 1-minute final countdown. Then during the race, mariners might want to count up to keep track of their time. You can use your GPSMAP 378/478 to perform each of these different countdowns. To open the Marine Timer: 1. Press MENU on the Compass Page.
  • Page 55 If you want to change the length of time and the behavior of the timer, open the Timers Setup tab on the Main Menu. NOTE: You can set the timer countdown for up to 60 minutes. GPSMAP 378/478 Owner’s Manual ArIne To set the Marine Timer: 1. Highlight the Setup tab on Main Menu, and then select the...

  • Page 56: Highway Page

    Nearby waypoints not in the active route can also be shown. You can zoom in or out to show a larger or smaller view of the highway. To change the highway perspective scale: Press IN to zoom in; press OUT to zoom out. GPSMAP 378/478 Owner’s Manual...

  • Page 57: Highway Page Options

    To show and select the Highway Page options: 1. Press PAGE repeatedly until the Highway Page appears. 2. Press MENU. 3. Highlight an option, and press ENTER. Highway Page Options Menu GPSMAP 378/478 Owner’s Manual ArIne The following options are available from the Highway Page options menu: Set Up Page Layout—select the page layout.

  • Page 58: Active Route Page

    Active Route Page When you are navigating a route using your GPSMAP 378/478, the Active Route Page shows each point (waypoint or map item) of the active route, with the point name, course, distance, and several other fields of information. The current destination point, the active point, is marked with an arrow icon.

  • Page 59: Position Data Page

    Your present locaton is 4.9 nm west of Waypoint 0001. Position Data Page GPSMAP 378/478 Owner’s Manual ArIne Position Data Page Options Press MENU to open the Position Data Page options menu. Change Nearest Type—specify the type of item used as the nearest item (shown in the lower-left data field).

  • Page 60: Xm Audio Page

    NOTE: You MUST have a GXM 30 antenna connected to your GPSMAP 378/478 and a subscription to XM Radio to use XM Radio features. Additionally, you must use the external speaker with 12/24-Volt adapter, third-party FM modulator, speakers, or have headphones plugged in to hear the audio.
  • Page 61 To select an XM Radio channel: 1. Press up or down on the ROCKER to scroll through the list of channels. 2. Highlight the channel you want, and then press ENTER. A triangle ( ) appears to the left of the channel currently playing. GPSMAP 378/478 Owner’s Manual ArIne XM Audio Page Options With the XM Audio Page open, press MENU to open the options menu. XM Audio Page Options Menu...

  • Page 62: Using Favorites

    2. Select the Favorites category, and press ENTER. 3. Highlight the channel you want to select from your list of favorites, and press ENTER. A triangle appears to the left of the newly selected channel. Selected channel Favorites List To delete a channel from Favorites: 1. In the Favorites category, highlight the channel you want to delete, and press MENU. 2. Highlight Delete Favorite to delete the selected channel from your favorites list, or highlight Delete All Favorites to delete all channels from your Favorites list. 3. Press ENTER. A confirmation message appears. 4. Highlight OK, and press ENTER again to confirm. GPSMAP 378/478 Owner’s Manual...
  • Page 63 Select Favorites to scan only channels in your Favorites list. 4. Press ENTER. Each channel is played for five seconds and then advances to the next channel. 5. Press any key to stop scanning and select the current channel. GPSMAP 378/478 Owner’s Manual ArIne Turning Audio On or Off To turn audio on or off: 1. On the Audio sub tab, press MENU. 2. Highlight Mute Audio Output on the options menu to turn the audio off. A music note with a red slash appears in the song pane. Highlight Enable Audio Output to resume audio...

  • Page 64: Automotive Mode Pages

    Ages This section discusses some of the more common Automotive operations you will perform with your GPSMAP 378/478 in Automotive Mode. Please note that many common operations, such as marking a waypoint and creating a route, are performed the same way as in Marine Mode.

  • Page 65: Navigating In Automotive Mode

    Navigating in Automotive Mode You can navigate to your destination in Automotive Mode using the Map Page. As you travel, your GPSMAP 378/478 guides you to your destination with voice prompts, arrows, and directions along the top of the screen. When you are actively navigating, you see a magenta line that always runs from your current location to the destination or to the next turn on the Map Page.

  • Page 66: Stopping And Resuming Navigation

    To stop navigation: 1. While navigating to a point, press NAV. 2. Highlight Stop Navigation, and press ENTER. 3. Highlight Resume Navigation, and press ENTER. Navigate Menu GPSMAP 378/478 Owner’s Manual...
  • Page 67 4. Select a waypoint from the list, and press ENTER to open the Waypoint Review Page. Waypoint Review Page Activating a Go To using the Find Menu 5. Highlight the Go To button, and press ENTER to begin navigation. GPSMAP 378/478 Owner’s Manual utoMotIve To go to a destination using the Find Menu: 1. Press FIND to open the Find Menu. 2. Highlight a category, and press ENTER. 3. Press ENTER, and use the ROCKER to begin entering the letters contained in the item name. The list begins to sort by the items which contain the letters you are entering. Press...

  • Page 68: Following A Saved Route

    You can also add stops along your trip, called Via Points. While navigating, press NAV to open the Navigate Menu. Navigate Menu in Automotive Mode While navigating a course GPSMAP 378/478 Owner’s Manual...

  • Page 69: Entering Custom Avoids

    GPSMAP 378/478 Owner’s Manual utoMotIve Creating a Detour If there is road construction or some other form of a detour while navigating a route, you can have your GPSMAP 378/478 create a detour route for you. To create a detour: 1. While navigating a course, press NAV.

  • Page 70: Adding And Editing Stops (Via Points)

    Showing the original route without Via Points 4. From the pop-up window, highlight either Use Map or Use Find Menu, and press ENTER. 5. If you selected Use Map, use the ROCKER to select an item on the map, and press ENTER. If you selected Use Find Menu, select an item from the Find Menu as discussed in the “Finding an Item” beginning on page 17. Remember you can press MENU while the Find Menu is open to find an item near another location, such as the destination. The new point is added to the route as shown on the Add/Edit Vias Page. 6. Repeat steps 3 through 5 until you have added all of the Via Points that you want. Highlight Done, and press ENTER to apply the new Via Points to the route. GPSMAP 378/478 Owner’s Manual...

  • Page 71: Following An Automotive Route

    Following an Automotive Route The GPSMAP 378/478 guides you to your destination using many tools, such as the Map Page and Current Route Page. Track Your Progress with the Map Page You can track the progress of your route on the Map Page. Your route is shown with a magenta line.

  • Page 72: Automotive Mode

    • Show and hide the heading line from the options menu. • Use the ROCKER to measure the distance between two objects on the map. • Change the page layout and data fields to customize the Map Page. Data fields Map zoom range Map Page GPSMAP 378/478 Owner’s Manual...

  • Page 73: Current Route Page

    Current Route Page Whenever you start a route in the GPSMAP 378/478 in Automotive Mode, the Active Route Page shows each turn of the active route, with the distance to the turn, the street name, and estimated time to arrival and time of arrival. As you navigate a route, the turn list automatically updates to indicate the next turn at the top of the list.

  • Page 74: Trip Computer Page

    Trip Computer Page Reset the Trip Computer before beginning a trip. If you make frequent stops, leave the GPSMAP 378/478 turned on in order to receive satellites. This allows the unit to accurately measure elapsed time during the trip.

  • Page 75: Main Menu

    • Calendar—view sun/moon and hunting/fishing information for a specific day. • Celestial—view tide, hunting & fishing, and sun & moon information. • Message—view system-generated messages. • Display—adjust backlighting and page display. • Sound—customize GPSMAP 378/478 sounds. • Setup—adjust system settings.

  • Page 76: Gps Tab

    GXM 30 antenna must be plugged into the USB port on the back of the unit to use features described in this section. Main Menu—Weather Tab For more information about XM Weather, see the Weather” section beginning on page GPSMAP 378/478 Owner’s Manual “Using XM WX...

  • Page 77: Xm Tab

    The Audio sub tab shows XM Radio channel categories, a list of available channels, information about the selected channel, and the strength of the XM signal. GPSMAP 378/478 Owner’s Manual Information Sub Tab Use the Information sub tab to view the radio identification number, XM WX Weather subscription information, and a list of weather features available to you based on your subscription plan.

  • Page 78: Route Tab

    The total number of stored and available waypoints appear at the bottom of the User sub tab. Proximity Sub Tab Use the Proximity sub tab to define an alarm circle around a stored waypoint location. “Creating page Main Menu—Points Tab GPSMAP 378/478 Owner’s Manual...

  • Page 79: Track Tab

    Saved Sub Tab The Saved sub tab shows a list of all saved tracks in your GPSMAP 378/478. GPSMAP 378/478 Owner’s Manual DSC Tab Use the DSC tab (Marine Mode only) to control and set up the Digital Selective Calling (DSC) features. DSC uses marine VHF radio and GPS to transmit and receive location information.

  • Page 80: Understanding Position Reports

    Understanding Distress Calls With your GPSMAP 378/478 properly connected to a VHF radio with DSC output, you can receive any DSC distress call within range. An alert message appears and a tone sounds when a distress call is received. The alarm only sounds on a distress call; position reports do not sound the alarm.

  • Page 81: Receiving A Position Report Or Distress Call

    Log, with the latest call at the top. The unit can store up to 100 calls; after 100 calls are received, the oldest log file is removed when a new call is received. GPSMAP 378/478 Owner’s Manual DSC Log Receiving a Position Report or Distress Call After you receive a Position Report or a Distress Call, you can quickly navigate to the location.

  • Page 82: Making A Distress Call

    Another way to input a name is from the Entry Review Page or the DSC Distress Call Page or DSC Position Report Pages. The Name and MMSI are sent to other Garmin GPS units: Only the MMSI numbers are sent to other non-Garmin DSC users.

  • Page 83: Setting Up Dsc

    Use the Sonar tab contains options for the Sonar Page. See the “Setting Up and Using Sonar” section beginning on more information about sonar setup options. NOTE: You must have a GSD 21 Sounder Module connected to page 12). your GPSMAP 378/478 to use sonar. Main Menu—Sonar Tab onAr page 103...

  • Page 84: Alarms Tab

    Alarms Tab Use the Alarms tab to define alarm settings. When an alarm goes off, the alarm message appears on the GPSMAP 378/478 and the unit emits five (5) beeps. Main Menu—Alarms tab To set an alarm: 1. Highlight the Alarms tab on the Main Menu.

  • Page 85: Weather Alarms

    Clock—sets an alarm based on the unit’s clock. Select On, and then enter a specific time that you want the alarm to sound. The GPSMAP 378/478 must be on for the clock alarm to work. Ext. (External) Voltage—sets an alarm to sound when the external voltage drops below a specified amount.

  • Page 86: Sonar Alarms

    MENU on any of the calendar views to open the options menu. To view the Sun & Moon Information tab or Hunt & Fish sub tab, highlight View Sun and Moon or View Hunt and Fish, and press ENTER. GPSMAP 378/478 Owner’s Manual Sunrse and sunset tmes for the current locaton and date.

  • Page 87: Celestial Tab

    Days with added points or routes are shown highlighted in green. Icons for the points and routes assigned to the date are shown along the bottom of the screen. GPSMAP 378/478 Owner’s Manual Celestial Tab The Celestial tab shows tide information, sun and moon information, and hunting and fishing information.

  • Page 88: Tide Sub Tab

    2. ENTER the date with the ROCKER, and press ENTER. You can also use the zoom IN and OUT keys to view information for another date. Press and hold IN or OUT to scroll quickly through dates. 3. Press ENTER when finished. The unit shows the chart for the date you entered or selected. To use the current date again, highlight the Date field. Press MENU, highlight Use Current Date, and press ENTER. GPSMAP 378/478 Owner’s Manual...
  • Page 89 You can also use the play, fast forward, and stop buttons to view an animation of the Sun & Moon sub tab. GPSMAP 378/478 Owner’s Manual To view sun and moon information for a different date: 1. Highlight the Date field, and press ENTER.
  • Page 90 Hunt & Fish Sub Tab To view hunt and fish information for a different date: 1. Highlight the Date field, and press ENTER. 2. Use the ROCKER to change the digits of the date. You can also use the zoom IN and OUT keys to view information for another date. Press and hold IN or OUT to scroll quickly through dates. 3. Press ENTER when finished. The unit shows the information for the date you entered. GPSMAP 378/478 Owner’s Manual...

  • Page 91: Message Tab

    Message Tab The Message tab shows a list of messages generated by the GPSMAP 378/478. Use the ROCKER to scroll through the entire list of messages on the Log sub tab. Use the Log Filter sub tab to show only the message types that you want to view.

  • Page 92: Display Tab

    Backlight Timeout—sets the backlight to stay on when it is turned on, or to time out after a selected period of time has elapsed when using the battery. The backlight stays on regardless of this setting when external power is used. GPSMAP 378/478 Owner’s Manual...

  • Page 93: Sound Tab

    Backlight Intensity—turns the backlight up or down. Press right on the ROCKER to increase the intensity or left to decrease. GPSMAP 378/478 Owner’s Manual Sound Tab Use the Sound tab to customize the sounds made by your GPSMAP 378/478.

  • Page 94: Setup Tab

    Setup Tab To customize how your GPSMAP 378/478 looks, use the System tab to adjust certain system settings. System Sub Tab Use the System sub tab to control settings for System Mode, Speed Filter, Text Language, WAAS, and External Power.
  • Page 95 • Off Road—creates a direct line from your current location to your destination. This is useful when traveling outside of the detailed map coverage area or where no roads exist. GPSMAP 378/478 Owner’s Manual Ask My Preference—determines whether you are asked to select a Route Preference before route calculations.
  • Page 96 You can also Reset the timer and turn it Off. Enter a time to use when counting up or down. Marine—appears on the Compass Page in Marine Mode. Since Midnight—shows the time the unit was turned on since midnight. To reset, select All Unit Defaults on the System sub tab. GPSMAP 378/478 Owner’s Manual...
  • Page 97 2. Select the Time sub tab. Time Sub Tab Time Zone—choose the time zone for your city so the GPSMAP 378/478 will show the correct local time. Select Other to enter a UTC Offset. If the wrong date appears, press MENU, highlight Set Date, and press ENTER.

  • Page 98: Selecting A Different Heading Reference

    You must update the magnetic variation as your location changes. Failure to update this setting can result in substantial differences between the information shown on your unit and external references, such as a magnetic compass. GPSMAP 378/478 Owner’s Manual...
  • Page 99 1. Highlight one of the Welcome Message fields, and press ENTER. 2. Use the ROCKER to enter information in the fields. You do not need to enter information in every field. When finished, press ENTER again. GPSMAP 378/478 Owner’s Manual 3. To show the welcome message when you turn on your GPSMAP 378/478, highlight the Show at Power-up check box, and press ENTER to select it. To hide the welcome information at start-up, clear the check mark.
  • Page 100 If you select GARMIN DGPS or RTCM In/NMEA Out format, you can control a differential beacon receiver directly from your GPSMAP 378/478 using the Interface sub tab. You can have the unit automatically scan for the DGPS beacon signal, or you can enter the beacon frequency and bit rate on the unit, and the information will be used to tune the beacon receiver.
  • Page 101 Highlight Scan and press ENTER. Interface Sub Tab with Garmin DGPS Selected The Status field shows one of the following: • Tuning—the unit is attempting to tune to the specified frequency and bit rate. • Scanning—the unit is automatically scanning through the frequencies and bit rates.

  • Page 102: Advanced Nmea Output Setup

    Use the Advanced NMEA Output Setup Page to set the output rate, change the precision of the Lat/Lon minutes, set Waypoint IDs to names or numbers, and turn on and off the GPS status, the Garmin Proprietary sentences, and Waypoint/Route (WPL, RTE).

  • Page 103: Using Xm Wx Weather

    GPSMAP 378/478 is in Simulator Mode and the GXM 30 antenna is unplugged. You can view XM WX Weather on your GPSMAP 378/478 in one of three ways: • To view all weather information on the map, use the Map Page.
  • Page 104 Map Page. NEXRAD Radar, Satellite Mosaic, Lightning, Storm Cells, Hurricanes—sets the map scale at which the feature first appears on the Map Page. Select Auto, Off, or from 20 ft to 800 nm. Weather Tab GPSMAP 378/478 Owner’s Manual...
  • Page 105 Srfc Wx Tab Surface Winds, Surface Pressure, Fronts, Visibility, County Warnings—sets the map scale at which each feature first appears on the Map Page. Select Auto, Off, or from 20 ft to 800 nm. GPSMAP 378/478 Owner’s Manual sIng eAther ettIng...

  • Page 106: Using The Weather Tab

    12, 24, 36, or 48 hours. To view the forecast map: 1. In the Weather Information Type field, highlight Forecast. The Map window shows the current forecast in the Map window. wndow Age of the weather report 2. Highlight the field to the right of Forecast, and press ENTER to show a list of forecast options. wndow Forecast Map GPSMAP 378/478 Owner’s Manual...

  • Page 107: Weather Options

    1. Highlight the Weather tab on the Main Menu. 2. Press MENU. Declutter On (Off)—allows you to toggle unwanted weather items on or off on the Map window. GPSMAP 378/478 Owner’s Manual sIng eAther Animate Weather (Stop Animation)—animates NEXRAD Radar and Satellite Mosaic weather. When selected, a series of frames appear, each showing a different time in the lower-left corner of the map.
  • Page 108 Accessing GXM 30 Antenna Information Use the Information sub tab to obtain version information about your GXM 30 antenna. To view information about your GXM 30 antenna: 1. Highlight the XM tab on the Main Menu. 2. Select the Information sub tab. 3. Press MENU. 4. With Antenna Information highlighted, press ENTER. A window appears showing the software version loaded to your GXM 30 antenna. 5. Press ENTER to close the window. GPSMAP 378/478 Owner’s Manual...

  • Page 109: Finding Weather Information

    For more information about the Find Menu, see Item” beginning on page To find weather information for your current location: 1. From any page, press FIND. 2. Select Weather Data, and press ENTER. The Weather From Current Location Page opens. Weather From Current Location GPSMAP 378/478 Owner’s Manual sIng 3. Highlight the Forecast tab to view the weather forecast for your current location. “Finding Weather Forecast 4. Highlight the Sea Surface tab to view sea surface information.
  • Page 110 You can highlight a weather bulletin, and press ENTER to view the full text of the marine weather bulletin. Marine Weather Bulletin nforMAtIon To find weather data for a different location: 1. Press MENU on the Weather From Current Location Page. 2. With Near Other highlighted, press ENTER. 3. Move the map pointer to a different location, and press ENTER. The Weather From (New Location) Page opens with weather information for the selected location. 4. Press MENU, highlight Near Current Location, and then press ENTER to return to the forecast for your current location. GPSMAP 378/478 Owner’s Manual...

  • Page 111: Setting Up And Using Sonar

    P and SInG This section covers the additional sonar options for the GPSMAP 378/478 when used in conjunction with a GSD 21 Sounder Module. Read the GSD 21 Sounder Module Installation Instructions to properly install the sounder module. When you turn...

  • Page 112: Using The Sonar Page

    (Dual) on the other half. The current display mode appears at the bottom of each sonar display. Read the more on information about sonar. “Understanding Sonar” section beginning on GPSMAP 378/478 Owner’s Manual page 112...

  • Page 113: Adjusting The Sonar Page

    You can also press MENU and highlight a shortcut setting to quickly change to commonly used settings and values. Press ENTER to accept the new setting (or press QUIT to cancel) and return to the Sonar Page. GPSMAP 378/478 Owner’s Manual ettIng uP And sIng onAr Sonar Adjustment Options Scroll—adjusts the rate that the sonar display scrolls from right to...
  • Page 114 The Noise Reject can be turned Off, set to Normal (automatically adjusts for optimum viewing), or to a fixed 1–100% setting. When setting the Noise Reject, remember that a higher noise rejection setting is less likely to show fish or structures. page 114 for more information. GPSMAP 378/478 Owner’s Manual...

  • Page 115: Resizing The Split Screen

    1. From the Sonar Page split screen, press MENU. 2. Highlight Size Split, and press ENTER. 3. Move the horizontal double-arrow left or right using the ROCKER until the vertical width line shows, then press ENTER. 4. If you want to cancel this operation, press QUIT or press MENU, highlight Stop Resizing, and press ENTER. GPSMAP 378/478 Owner’s Manual ettIng uP And sIng onAr Using the Pointer on the Sonar Page You can show the pointer (arrow) to reference sonar items and mark underwater waypoints.

  • Page 116: Setting Up Sonar

    The Keel Offset is reflected in the depth reading. Transducer—select the type of transducer that you are using. If you are using a speed-capable transducer/sensor, select Temp, Spd. GPSMAP 378/478 Owner’s Manual...

  • Page 117: Calibrating The Water Speed

    To find out your speed, divide the distance by the time. To calibrate the water speed: 1. On the Setup sub tab of the Sonar tab, highlight the Calibrate Water Speed button, and press ENTER. 2. Bring the boat to a cruising speed. Both the top ground and uncalibrated water speeds are shown at the bottom of the calibration window. Note your top speed, then stop the boat, and press ENTER. GPSMAP 378/478 Owner’s Manual ettIng uP And sIng Calibrating the Water Speed 3. By default, the top ground speed is automatically shown. If a ground speed is not available, the top uncalibrated water speed is used instead. If the new speed is correct, highlight OK, and press ENTER.

  • Page 118: Setting Up The Sonar Display

    Background Color—select the color for the Sonar Page and the sonar on the Map Split Page. Whte background Temperature graph Sonar Page with the Sonar Display Settings Changed Graphic flasher Color bar Depth scale n corners GPSMAP 378/478 Owner’s Manual...

  • Page 119: Changing The Temperature Display

    Temp or Temp, Spd as the transducer type on the Setup sub tab. NOTE: You must be receiving proper sonar data from another device, such as Garmin GSD 21 Sounder Module, to view temperature information. To access the Temperature sub tab: 1. Highlight the Sonar tab on the Main Menu.

  • Page 120: Understanding Sonar

    The transducer collects the reflected sound waves and sends the data to the GSD 21 Sounder Module and then to the GPSMAP 378/478 to be processed and shown. The underwater data is shown on the Sonar display in the order that it is returned; first returned is the first on the display.

  • Page 121: Transducer Coverage

    6-foot diameter 40° Cone Angle (50 kHz) 10° Cone Angle (200 kHz) circle at a 30-foot depth. Dual frequency mode combines both frequencies to get the best coverage area and contour/depth readings. GPSMAP 378/478 Owner’s Manual...
  • Page 122 Thermoclines are shown as the weakest colors. One of the unique features offered by Garmin is See-Thru technology, which allows the GPSMAP 378/478 to hear both weak and strong signals simultaneously so it can identify fish returns under the toughest conditions, such as suspended in thermoclines or even hiding near structures.

  • Page 123: Appendix

    XM WX Weather or XM Radio the entire time. Source: 11–35 VDC Fuse: 3AG - 1.5 Amp GPSMAP 378/478 Owner’s Manual Performance Receiver: Differential-ready 12 parallel channel receiver Acquisition Times: Approximately 15 seconds (warm start) Approximately 45 seconds (cold start) Approximately 5 minutes (First Time/ AutoLocate™)

  • Page 124: Optional Accessories

    64 MB, 128 MB, 256 MB, and 512 MB sizes. Download detailed map data from MapSource CD-ROMs to a data card, either directly through your GPSMAP 378/478 using the PC USB cable, the optional PC Interface cable, or with the optional USB Data Card Programmer.

  • Page 125: Installation Information

    GPSMAP 378/478 to auxiliary devices and removing the antenna. Connecting the Power/Data Cable The power/data cable connects the GPSMAP 378/478 to an 11–35 VDC system and provides interface capabilities for connecting external devices. The color code in the diagram below and to the right indicates the appropriate harness connections.
  • Page 126 Connecting the Optional GXM 30 Antenna Connect the optional GXM 30 antenna to the GPSMAP 378/478 to access XM WX satellite weather and XM Radio. For more information about the GXM 30 antenna, see the GXM 30 Owner’s Manual.

  • Page 127: Information About Usb Drivers

    Connecting Your GPSMAP 378/478 to a Computer You can connect your GPSMAP 378/478 to your computer using the supplied USB cable to connect to a USB data port or the PC Interface cable to connect to a DB-9 serial communications port.

  • Page 128: Using Ximage For Customized Waypoint Icons

    Installing and Removing Data Cards The GPSMAP 378/478 uses an optional Garmin data card to show digital charts and maps. Install the data card in the card slot located on the bottom of the unit. Install or remove the data card at any time, whether the unit is on or off.
  • Page 129 GPBOD, GPRTE, and GPWPL. The following are the Proprietary Sentences for NMEA 0183, version 3.01 output: PGRME, PGRMZ, and PGRMM. The GPSMAP 378/478 also includes NMEA input with support for the BWC, DBT, DPT, DSC, DSE, MTW, VHW, VTG, and XTE sentences.

  • Page 130: Satellite Information

    The DGPS system is available for use without a fee, but you do need additional equipment to receive DGPS signals; a beacon receiver compatible with the RTCM format sentences supported by your Garmin GPS is needed to use DGPS. Refer to the United States Coast Guard’s Web site (www.navcen.uscg.gov/)

  • Page 131: What Is Waas/Egnos

    SBAS system should be capable of providing your GPS unit with increased accuracy at any location in the world. Currently, enabling WAAS on your Garmin GPSMAP 378/478 in regions that are not supported by ground stations might not improve accuracy, even when receiving signals from an SBAS satellite.

  • Page 132: Loran Td Setup

    Setup TD field, the active waypoint information will reflect those changes. Because the GPSMAP 378/478 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 133 Because of this, the unit can navigate to a TD coordinate anywhere in the world. For more information on LORAN TDs, you can download the LORAN TD Position Format Handbook from the Garmin Web site. PPendIX etuP...

  • Page 134: Map Datums And Location Formats

    Every chart has a map datum reference, and you can set the GPSMAP 378/478 to match most of those commonly used. If you are navigating and comparing the GPS coordinates to a map, chart, or other reference, set the map datum in the GPS unit to the same datum as the map to ensure the most accurate navigation.

  • Page 135: Digital Selective Calling (Dsc)

    Coast Guard when used in an emergency distress call. To obtain a MMSI number, users must register their VHF radio with the FCC (Form 605). Garmin does not supply this number! For more information regarding MMSI numbers, visit www.navcen.uscg.gov/marcomms/gmdss/mmsi.htm.

  • Page 136: How Are Mmsi Assignments Obtained

    When the GPSMAP 378/478 is connected to a VHF with DSC support, the GPS unit shows a call list, log, and a directory. Basic wiring is required for the Garmin unit and VHF radio to send and receive NMEA data from each other.

  • Page 137: Messages

    Memory Full—unit memory is full, no further data can be saved. Memory (RAM) Failed Unit Needs Repair—there is an internal problem with your unit. Contact Garmin Product Support to have the unit serviced. Memory (ROM) Failed Unit Needs Repair—there is an internal problem with your unit.
  • Page 138 Water Alarm. Sonar Failed Unit Needs Repair—there is an internal problem with the unit. Contact Garmin Product Support to have the unit serviced. Sunrise, Switching to Day Mode—the unit is switching to Day Mode. Sunset, Switching to Night Mode—the unit is switching to Night Mode.

  • Page 139: Data Field Options

    GPSMAP 378/478 Owner’s Manual Elevation—the altitude (height) above or below mean sea level (MSL). GPS Status—the current status of the GPS receiver, such as “3D GPS.” Location (Lat/Lon)—your current location as latitude/longitude coordinates. Location (Selected)—your current location described in the selected units of measure (other than lat/lon).
  • Page 140 Weather–Temperature—the temperature at the nearest weather reporting station. Weather–Wind—the wind speed and direction at the nearest weather reporting station. XM Audio—the artist and song title of the XM audio channel currently playing. XM Signal—the strength of the XM signal. GPSMAP 378/478 Owner’s Manual...

  • Page 141: Software License Agreement

    United States of America copyright laws and international copyright treaties. You further acknowledge that the structure, organization, and code of the Software are valuable trade secrets of Garmin and that the Software in source code form remains a valuable trade secret of Garmin. You agree not...

  • Page 142: Limited Warranty

    Within this period, Garmin will, at its sole option, repair or replace any components that fail in normal use. Such repairs or replacement will be made at no charge to the customer for parts or labor, provided that the customer shall be responsible for any transportation cost.

  • Page 143: Weather Data Warranty

    If you use XM Services it is your responsibility to exercise prudent discretion and observe all safety measures required by law and your own common sense. You assume the entire risk related to your use of the Services. XM and Garmin assume no responsibility for accidents resulting from or associated with use of the Services.

  • Page 144: Xm Satellite Radio Service Agreement

    Reception of the XM signal may vary depending on location. Subscriptions subject to Customer Agreement included with the XM Welcome Kit and available at xmradio.com. Available only in the 48 contiguous United States. XM WX is a trademark of XM Satellite Radio Inc. GPSMAP 378/478 Owner’s Manual...

  • Page 145: Fcc Compliance

    Consult the dealer or an experienced radio/TV technician for help. This product does not contain any user-serviceable parts. Repairs should only be made by an authorized Garmin service center. Unauthorized repairs or modifications could result in permanent damage to the equipment, and...

  • Page 146: Index

    DB-9 119 compass page 45, 85 deactivate 50 marine timer 46 declutter 43 options menu 46 deep water 78 showing/hiding 45 defaults 8, 10 connecting the GXM 30 antenna 118 connecting the power cable 2, 117 GPSMAP 378/478 Owner’s Manual...
  • Page 147 29 editing a waypoint 29 getting started 1 emergency 128 going to a destination 14 entering data 9 erase track log 35 GPSMAP 378/478 Owner’s Manual go to distress call 73 icons 84 point 14 identifier 128 position report 73...
  • Page 148 1, 2 off course 76 outlet 2 off road 87 practice mode. See simulator mode on-screen button 8 project waypoint location 28 options menu proximity opening 9 points tab 32 using 9 waypoint 33 overzoom 42 GPSMAP 378/478 Owner’s Manual...
  • Page 149 96 set fuel flow 23 satellite signals 4 set speed 23 satellite sky view 123 shallow water 78 GPSMAP 378/478 Owner’s Manual shorter distance 87 signal strength 5 temperature 89, 111 simulate 6, 86 text language 86 GPS 5...
  • Page 150 53 options menu 53 scanning channels 55 XM Tab 69 XM WX Weather 95 finding weather information 101 Mrn Wx tab 97 options menu 95 Srfc Wx tab 97 viewing 95 weather tab 96 zoom 41 GPSMAP 378/478 Owner’s Manual...
  • Page 152 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. © 2009 Garmin Ltd. or its subsidiaries Garmin International, Inc. 1200 East 151 Street, Olathe, Kansas 66062, USA Garmin (Europe) Ltd. Liberty House, Hounsdown Business Park, Southampton, Hampshire, SO40 9RB UK Garmin Corporation No. 68, Jangshu 2nd Road, Shijr, Taipei County, Taiwan www.garmin.com January 2009 Part Number 190-00683-00 Rev. C Printed in Taiwan...

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