Garmin GPSMAP 8400 series Owner's Manual

Also see for GPSMAP 8400 series: Installation instructions Installation instructions Quick start manual Owner's manual Owner's manual

Contents

Garmin GPSMAP 8400 series Owner's Manual Manual pdf 35 page image

Adjusting Rain Clutter on the Radar ScreenYou can adjust the appearance of clutter caused by rain.Reducing the radar range also can minimize rain clutter(Zooming In and Out of the Radar Screen, page 24).The rain clutter setting affects the appearance of nearby rainclutter and targets more than it affects the appearance of distantrain clutter and targets. A higher rain clutter setting reduces theappearance of clutter caused by nearby rain, but it can alsoreduce or eliminate the appearance of nearby targets.NOTE: Depending upon the radar in use, the rain clutter settingsconfigured for use in one radar mode may or may not be appliedto other radar modes or to the radar overlay.1 From a radar screen, select Menu > Radar Options > RainClutter.2 Select Up or Down to decrease or increase the appearanceof nearby rain clutter until other targets are clearly visible onthe radar screen.Clutter caused by rain may still be visible.Reducing Cross Talk Clutter on the Radar ScreenYou can reduce the appearance of clutter caused byinterference from another nearby radar source, when the crosstalk reject setting is on.NOTE: Depending upon the radar in use, the cross talk rejectsetting configured for use in one radar mode may or may not beapplied to other radar modes or to the Radar overlay.From a Radar screen or the Radar overlay, select Menu >Radar Setup > Crosstalk Rej..Radar Options MenuFrom a radar screen, select Menu > Radar Options.MotionScope™: Uses the Doppler effect to detect and highlightmoving targets to help you avoid potential collisions, findflocks of birds, and track weather formations.Pulse Exp.: Increases the duration of the transmit pulse, whichhelps maximize the energy directed toward targets. Thishelps to enhance the detection and identification of targets.Echo Trails: Enables you to track the movement of vessels onthe radar screen.Rain Clutter: Reduces the clutter caused by rain.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.Enable Guard Zone: Sets a safe zone around your boat andsounds an alarm when anything enters the zone.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 Chart Setup 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 27).Antenna Configuration: Sets the radar antenna size and setsthe position in which the radar stops (Setting a Custom ParkPosition, page 27).Enable No Transmit Zone: Sets the area in which the radardoes not transmit signals (Enabling and Adjusting a RadarNo Transmit Zone, page 23).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.Radar 27