Humminbird Model Matrix 87 manual Understanding Sonar History, Real Time Sonar RTS Window

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Understanding Sonar History

It is important to understand the significance of the Matrix™ display. The display does NOT show a literal 3-dimensional representation of what is under the water. Each vertical band of data received by the control head and plotted on the display represents something that was detected by a sonar return at a particular time. As both the boat and the targets (fish) may be moving, the returns are only showing a particular segment of time when objects were detected, not exactly where those objects are in relation to other objects shown on the display.

Real Time Sonar (RTS®) Window

A Real Time Sonar (RTS®) Window appears on the right side of the display in the Sonar View only. The RTS® Window always updates at the fastest rate possible for depth conditions and shows only the returns from the bottom, structure and fish that are within the transducer beam. The RTS® Window plots the depth and intensity of a sonar return. (See Sonar Menu: RTS® Window).

Bottom Presentation

As the boat moves, the unit charts the changes in depth on the display to create a profile of the Bottom Contour. The type of bottom can be determined from the return charted on the display. A Hard Bottom such as compacted sediment or flat rock appears as a thinner line across the display. A Soft Bottom such as mud or sand appears as a thicker line across the display. Rocky Bottoms have a broken, random appearance.

NOTE: A sloping bottom will be represented as a thicker line across the display. Also, harder bottoms will be typically displayed with red and softer bottoms will be typically displayed with blue.

The sonar returns from the bottom, structure and fish can be represented as either Structure ID® or WhiteLine®. See Sonar X-Press™ Menu: Bottom View for details on how to set the bottom view.

Structure ID® represents weak returns in blue and strong returns in red.

The Narrow RTS® Window indicates the sonar intensity through the use of colors. Red indicates a strong return and blue indicates a weak return. The depth of the sonar return is indicated by the vertical placement of the return on the display depth scale.

The Wide RTS® Window indicates the sonar intensity through the use of a bar graph. The length of the plotted return provides an indication of whether the return is weak or strong. The depth of the sonar return is indicated by the vertical placement of the return on the display depth scale.

WhiteLine® highlights the strongest sonar returns in white, resulting in a distinctive outline. This has the benefit of clearly defining the bottom on the display.

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Contents Matrix 87c Operations Manual Table of Contents Thank YouAlarms Menu Tab Setup Menu TabSonar X-Press Menu Sonar Views Only Navigation X-Press Menu Navigation Views OnlyQuadraBeam Sonar How Sonar WorksDualBeam Plus Sonar WideSide Sonar How GPS and Cartography WorkMulti-Media Card MMC With Optional-Purchase WideSide TransducerKHz Blue Fish Symbol KHz Orange Fish SymbolWhat’s On the Sonar Display High Sonar Intensity Return Bait BallSonar views ViewsSonar View Bottom Presentation Understanding Sonar HistoryReal Time Sonar RTS Window Sonar Zoom View 200/83 kHz Split Sonar ViewBig Digits View Side Beam ViewBig Digits View Side Beam ViewBird’s Eye View WideSide ViewBird’s Eye View Chart View Chart View with Active CursorCombo View View OrientationViewing Cartography Introduction to NavigationWaypoints, Routes and Tracks Waypoints, Routes and TracksSave, Edit, or Delete a Waypoint Navigate to a Waypoint or PositionAdd a Waypoint Target or Trolling Grid Chart View with TargetChart View with Grid Edit, Delete or Hide Saved Tracks Save, Edit or Delete a RouteSave or Clear a Current Track POWER/LIGHT Key Key FunctionsView Key Info KeyAccessory Bus Powering Up the UnitGoto Key Zoom +/- KeyMenu System Main Menu System Normal User ModeSonar Tab, Normal Mode Sonar Tab, Advanced Mode Exit Normal operation by powering your Matrix off Exit the Simulator by powering your Matrix offStart-Up Options Menu Normal OperationPC Connect Exit PC Connect mode by powering the Matrix offSystem Status Sonar X-Press Menu Side ViewSensitivity Sonar Views OnlyChart Speed Upper RangeLower Range Side Beam RangeTo adjust the Bottom View Bottom ViewNavigation X-Press Menu Navigation Views OnlyCancel Navigation Save Current TrackClear Current Track Save Current RouteRemove Grid Sonar WindowSonar Menu Tab Only if a Grid is ActiveBeam Select Fish ID+To use Beam Select Highlight Beam Select on the Sonar main menuFish Sensitivity KHz SensitivityKHz Balance WideSide SensitivityNoise Filter Depth LinesSurface Clutter Max Depth Water TypeTransducer Select Navigation Menu TabRoutes TracksWaypoints Chart Detail Level Map BordersLat/Lon Grid Spot SoundingsGrid Rotation Trackpoint IntervalTrack Min Distance Map DatumAlarms Menu Tab Clear Map OffsetDelete All Nav Data To Clear Map OffsetDepth Alarm Fish ID AlarmLow Battery Alarm Temp AlarmAlarm Tone Arrival AlarmDrift Alarm Setup Menu Tab Units DepthUnits Temp Units DistanceUser Mode Triplog ResetRestore Defaults Units SpeedSelect Readouts Depth OffsetTemp Offset Speed CalibrationLocal Time Zone Daylight Savings TimePosition Format Time FormatNmea Output SonarAccessories Menu Tab TroubleshootingMatrix Doesn’t Power Up Matrix Defaults to Simulator with a Transducer AttachedDisplay Problems Problem Possible CauseFinding the Cause of Noise IsolationMatrix Accessories SpecificationsContact Humminbird
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