Humminbird 343c manual Understanding Sonar History, Real Time Sonar RTS Window, Freeze Frame

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Understanding Sonar History

It is important to understand the significance of the 300 Series™ Fishing System 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

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).

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.

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.

Freeze Frame

Freeze Frame - Pressing any arrow on the 4-WAY Cursor Control key will freeze the screen and a cursor will be displayed on the screen. The cursor can be positioned on the display using the 4-WAY Cursor Control key to determine the depth of any sonar return. The RTS® Window continues to update in Freeze Frame. In addition, see the effects of menu setting changes with Instant Image Update. Pressing EXIT will exit Freeze Frame and the display will start to scroll. Freeze Frame is available in Sonar, Sonar Zoom and 200/83 kHz Split Sonar Views.

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Contents 343c Operations Manual Table of Contents Thank YouAlarms Menu Tab Setup Menu TabTroubleshooting Specifications Glossary Contact HumminbirdHow Sonar Works DualBeam Plus Sonar What’s On the Display High Sonar Intensity Return Bait BallViews Sonar ViewFreeze Frame Understanding Sonar HistoryReal Time Sonar RTS Window Bottom Presentation Sonar Zoom View 200/83 kHz Split Sonar ViewPOWER/LIGHT Key Big Digits ViewKey Functions Circular Flasher ViewExit Key Menu KeyWAY Cursor Control Key Powering Up the Unit Menu SystemExit Normal operation by powering your Fishing System off Start-Up Options MenuNormal Operation Normal Simulator System StatusSelf Test Accessory Test Exit the Simulator by powering your Fishing System offExit System Status by powering your Fishing System off SimulatorTo adjust the Sensitivity Sonar X-PressTMMenuSensitivity Highlight Sensitivity on the Sonar X-PressTMMenuTo adjust the Upper Range To adjust the Lower RangeUpper Range Lower RangeChart Speed Zoom LevelBottom Lock Bottom RangeSonar Menu Tab Beam SelectTo use Beam Select Highlight Beam Select on the Sonar main menuTo change the Fish ID Sensitivity setting To change the RTS Window settingFish ID+TM Fish ID SensitivityBottom View Zoom WidthKHz Sensitivity Depth LinesMax Depth Surface ClutterNoise Filter Water Type Alarms Menu TabTo change the Water Type setting Depth Alarm Fish ID AlarmLow Battery Alarm Temp AlarmAlarm Tone Setup Menu TabTo change the Alarm Tone setting Highlight Alarm Tone on the Alarms main menuUser Mode Units DepthUnits Temp Units DistanceSelect Views Triplog ResetRestore Defaults Temp Offset Select ReadoutsDepth Offset Speed Calibration TroubleshootingTo change the Speed Calibration setting Display Problems Problem Possible CauseFinding the Cause of Noise IsolationSonar Terms SpecificationsGlossary 531447-1A343cEng.qxd 11/11/2005 918 PM 531447-1A343cEng.qxd 11/11/2005 918 PM Receiver See Transmitter 531447-1A343cEng.qxd 11/11/2005 918 PM Contact Humminbird