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 41 page image

Show VRM/EBL: Shows the variable range marker (VRM) circleand the electronic bearing line (EBL) to allow you to measurethe distance and bearing from your boat to a target object(VRM and EBL, page 31).Enable Guard Zone: Sets a safe zone around your boat andsounds an alarm when anything enters the zone (Enabling aGuard Zone, page 30).Timed Transmit: Helps conserve power by transmitting radarsignals at set intervals.Radar Setup MenuFrom a radar screen, select Menu > Radar Setup.Source: Selects the radar source when more than one radar isconnected to the network.Chart Display: Shows the chart under the radar image. Whenenabled, the Layers menu appears.Orientation: Sets the perspective of the radar display.Crosstalk Rej.: Reduces the appearance of clutter caused byinterference from another nearby radar source.Rotation Spd.: Sets the preferred speed at which the radarrotates. The High Speed option can be used to increase therefresh rate. In some situations, the radar automaticallyrotates at the normal speed to improve detection, forexample, when a longer range is selected or whenMotionScope or Dual range is used.Appearance: Sets the color scheme, look-ahead speed, andnavigation appearance.Installation: Allows you to configure the radar for theinstallation, such as setting the front of the boat and theantenna park position.Radar Appearance SettingsFrom a radar screen, select Menu > Radar Setup >Appearance.NOTE: These settings do not apply to the radar overlay.Bkgd. Color: Sets the color for the background.Foreground Clr.: Sets the color scheme for the radar returns.Look-Ahead Speed: Shifts your present location toward thebottom of the screen automatically as your speed increases.Enter your top speed for the best results.Heading Line: Shows an extension from the bow of the boat inthe direction of travel on the radar screen.Range Rings: Shows the range rings that help you to visualizedistances on the radar screen.Bearing Ring: Shows a bearing relative to your heading orbased on a north reference, to help you determine thebearing to an object shown on the radar screen.Nav Lines: Shows the navigation lines that indicate the courseyou have set using Route To, Auto Guidance, or Go To.Waypoints: Shows waypoints on the radar screen.Radar Installation SettingsFront of Boat: Compensates for the physical location of theradar when it is not on the boat axis (Front-of-Boat Offset,page 33).Antenna Configuration: Sets the radar antenna size and setsthe position in which the radar stops (Setting a Custom ParkPosition, page 33).Enable No Transmit Zone: Sets the area in which the radardoes not transmit signals (Enabling and Adjusting a RadarNo Transmit Zone, page 29).Front-of-Boat OffsetThe front-of-boat offset compensates for the physical location ofthe radar scanner on a boat, if the radar scanner does not alignwith the bow-stern axis.Measuring the Potential Front-of-Boat OffsetThe front-of-boat offset compensates for the physical location ofthe radar scanner on a boat, if the radar scanner does not alignwith the bow-stern axis.1 Using a magnetic compass, take an optical bearing of astationary target located within viewable range.2 Measure the target bearing on the radar.3 If the bearing deviation is more than +/- 1°, set the front-of-boat offset.Setting the Front-of-Boat OffsetBefore you can set the front-of-boat offset, you must measurethe potential front-of-boat offset.The front-of-boat offset setting configured for use in one radarmode is applied to every other radar mode and to the Radaroverlay.1 From a Radar screen or the Radar overlay, select Menu >Radar Setup > Installation > Front of Boat.2 Select Up or Down to adjust the offset.Setting a Custom Park PositionIf you have more than one radar on your boat, you must beviewing the radar screen for the radar you want to adjust.By default, the antenna is stopped perpendicular to the pedestalwhen it is not spinning. You can adjust this position.1 From the radar screen, select Menu > Radar Setup >Installation > Antenna Configuration > Park Position.2 Use the slider bar to adjust the position of the antenna whenstopped, and select Back.Selecting a Different Radar Source1 Select an option:• From a radar screen or the radar overlay, select Menu >Radar Setup > Source.• Select Settings > Communications > PreferredSources > Radar.2 Select the radar source.Changing the Radar Mode1 From a combination screen or SmartMode layout with radar,select Menu > Radar Menu > Change Radar.2 Select a radar mode.AutopilotWARNINGYou can use the autopilot feature only at a station installed nextto a helm, throttle, and helm control device.You are responsible for the safe and prudent operation of yourvessel. The autopilot is a tool that enhances your capability tooperate your boat. It does not relieve you of the responsibility ofsafely operating your boat. Avoid navigational hazards andnever leave the helm unattended.Always be prepared to promptly regain manual control of yourboat.Learn to operate the autopilot on calm and hazard-free openwater.Use caution when operating the autopilot near hazards in thewater, such as docks, pilings, and other boats.The autopilot system continuously adjusts the steering of yourboat to maintain a constant heading (heading hold). The systemalso allows manual steering and several modes of automatic-steering functions and patterns.Autopilot 33