Garmin GPSMAP 7400 Owner's Manual

Also see for GPSMAP 7400 Series: Owner's manual Owner's manual Installation insrtuctions Installation instructions Owner's manual

Contents

Garmin GPSMAP 7400 Owner's Manual Manual pdf 56 page image

Route Start: Selects a starting point for route navigation.Auto Guidance Path ConfigurationsCAUTIONThe Preferred Depth and Vertical Clearance settings influencehow the chartplotter calculates an Auto Guidance path. If anarea has an unknown water depth or an unknown obstacleheight, the Auto Guidance path is not calculated in that area. Ifan area at the beginning or the end of an Auto Guidance path isshallower than the Preferred Depth or lower than the VerticalClearance settings, the Auto Guidance path may not becalculated in that area, depending on the map data. On thechart, the course through those areas appears as a gray line ora magenta and gray striped line. When your boat enters one ofthose areas, a warning message appears.NOTE: Auto Guidance is available with premium charts, in someareas.NOTE: Not all settings apply to all maps.You can set the parameters the chartplotter uses whencalculating an Auto Guidance path.Preferred Depth: Sets the minimum water depth, based onchart depth data, that your boat can safely travel over.NOTE: The minimum water depth for the premium charts(made before 2016) is 3 feet. If you enter a value of less than3 feet, the charts only use depths of 3 feet for Auto Guidancepath calculations.Vertical Clearance: Sets the minimum height of a bridge orobstacle, based on chart data, that your boat can safelytravel under.Shoreline Distance: Sets how close to the shore you want theAuto Guidance path to be placed. The Auto Guidance pathmay move if you change this setting while navigating. Theavailable values for this setting are relative, not absolute. Toensure that the Auto Guidance line is placed the appropriatedistance from shore, you can assess the placement of theAuto Guidance path using one or more familiar destinationsthat require navigation through a narrow waterway (Adjustingthe Distance from Shore, page 17).Adjusting the Distance from ShoreThe Shoreline Distance setting indicates how close to the shoreyou want the Auto Guidance line to be placed. The AutoGuidance line may move if you change this setting whilenavigating. The available values for the Shoreline Distancesetting are relative, not absolute. To ensure the Auto Guidanceline is placed the appropriate distance from shore, you canassess the placement of the Auto Guidance line using one ormore familiar destinations that require navigation through anarrow waterway.1 Dock your vessel or drop the anchor.2 Select Settings > Preferences > Navigation > AutoGuidance > Shoreline Distance > Normal.3 Select a destination that you have navigated to previously.4 Select Navigate To > Auto Guidance.5 Review the placement of the Auto Guidance line, anddetermine whether the line safely avoids known obstaclesand the turns enable efficient travel.6 Select an option:• If the placement of the Auto Guidance line is satisfactory,select Menu > Navigation Options > Stop Navigation,and proceed to step 10.• If the Auto Guidance line is too close to known obstacles,select Settings > Preferences > Navigation > AutoGuidance > Shoreline Distance > Far.• If the turns in the Auto Guidance line are too wide, selectSettings > Preferences > Navigation > Auto Guidance> Shoreline Distance > Near.7 If you selected Near or Far in step 6, review the placement ofthe Auto Guidance line, and determine whether the linesafely avoids known obstacles and the turns enable efficienttravel.Auto Guidance maintains a wide clearance from obstacles inopen water, even if you set the Shoreline Distance setting toNear or Nearest. As a result, the chartplotter may notreposition the Auto Guidance line, unless the destinationselected requires navigation through a narrow waterway.8 Select an option:• If the placement of the Auto Guidance line is satisfactory,select Menu > Navigation Options > Stop Navigation,and proceed to step 10.• If the Auto Guidance line is too close to known obstacles,select Settings > Preferences > Navigation > AutoGuidance > Shoreline Distance > Farthest.• If the turns in the Auto Guidance line are too wide, selectSettings > Preferences > Navigation > Auto Guidance> Shoreline Distance > Nearest.9 If you selected Nearest or Farthest in step 8, review theplacement of the Auto Guidance line, and determinewhether the line safely avoids known obstacles and the turnsenable efficient travel.Auto Guidance maintains a wide clearance from obstacles inopen water, even if you set the Shoreline Distance setting toNear or Nearest. As a result, the chartplotter may notreposition the Auto Guidance line, unless the destinationselected requires navigation through a narrow waterway.10Repeat steps 3 through 9 at least once more, using adifferent destination each time, until you are familiar with thefunctionality of the Shoreline Distance setting.Communications SettingsNMEA 0183 SettingsSelect Settings > Communications > NMEA 0183 Setup.Port Types: See Setting the Communication Format for EachNMEA 0183 Port, page 48.Output Sentences: See Configuring NMEA 0183 OutputSentences, page 48.Position Precision: Adjusts the number of digits to the right ofthe decimal point for transmission of NMEA output.XTE Precision: Adjusts the number of digits to the right of thedecimal point for NMEA crosstalk error output.Waypoint IDs: Sets the device to transmit waypoint names ornumbers via NMEA 0183 while navigating. Using numbersmay resolve compatibility issues with older NMEA 0183autopilots.Defaults: Restores the NMEA 0183 settings to the originalfactory defaults.Diagnostics: Displays NMEA 0183 diagnostic information.Configuring NMEA 0183 Output SentencesYou can enable and disable NMEA 0183 output sentences.1 Select Settings > Communications > NMEA 0183 Setup >Output Sentences.2 Select an option.3 Select one or more NMEA 0183 output sentences, and selectBack.4 Repeat steps 2 and 3 to enable or disable additional outputsentences.Setting the Communication Format for Each NMEA 0183PortYou can configure the communication format for each internalNMEA 0183 port when connecting your chartplotter to externalNMEA 0183 devices, a computer, or other Garmin devices.48 Device Configuration