Humminbird 531444-1_A, 323 manual To adjust the Sensitivity, To adjust the Upper Range

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Sensitivity

Sensitivity controls how much detail is shown on the display and will adjust the sensitivity of all sonar frequencies. Increasing the sensitivity shows more sonar returns from small baitfish and suspended debris in the water; however, the display may become too cluttered. When operating in very clear water or greater depths, increased sensitivity shows weaker returns that may be of interest. Decreasing the sensitivity eliminates the clutter from the display that is sometimes present in murky or muddy water. If Sensitivity is adjusted too low, the display may not show many sonar returns that could be fish.

NOTE: The Sensitivity setting is a global setting and will adjust the sensitivity of all sonar frequencies, as compared to specific sensitivity adjustments (such as 83 kHz Sensitivity) which allow you to adjust the level of sensitivity for one specific beam.

Sensitivity at Low

Sensitivity at Medium

Sensitivity at High

To adjust the Sensitivity:

1.Highlight Sensitivity on the Sonar X-PressTMMenu.

2.Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or decrease the Sensitivity setting. (Low = 1, High = 20, Default = 10)

Upper Range

(Advanced: Sonar, Split Sonar, Big Digits and Circular Flasher Views only)

Upper Range sets the shallowest depth range that will be displayed on the Sonar, Split Sonar, Big Digits and Circular Flasher views. The Upper Range menu choice is available when User Mode is set to Advanced (see Setup Menu Tab: User Mode) and can only be accessed from the Sonar, Split Sonar, Big Digits and Circular Flasher views. Upper Range is often used with Lower Range.

For example, if you are only interested in the area between 20 and 50 feet deep, you should set the Upper Depth Range to 20 and the Lower Depth Range to 50. The Sonar View will then show the 30 foot area between 20 and 50, and will not show the surface or the bottom (assuming the bottom is deeper than 50 feet), and will show greater detail for that area between 20 and 50 feet.

NOTE: A minimum distance of 10 feet will be maintained between the Upper and Lower Range regardless of the manual settings entered.

To adjust the Upper Range:

1.Make sure you are in Advanced Mode, then highlight Upper Range on the Sonar X-PressTMMenu.

2.Use the LEFT or RIGHT 4-WAY Cursor Control keys to increase or decrease the Upper Range setting. (0 to 990 feet or 0 to 327 meters [International Models Only], Default = 0)

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Contents Operations Manual Thank You Table of ContentsSetup Menu Tab Alarms Menu TabTroubleshooting Specifications Glossary Contact HumminbirdHow Sonar Works DualBeam Plus Sonar Soft Bottom RTS Real Time Sonar Window What’s On the DisplayBait Ball Hard Bottom Rocky Bottom Temperature water Do Not print this Sonar View ViewsFreeze Frame Understanding Sonar HistoryReal Time Sonar RTS Window Bottom Presentation 200/83 kHz Split Sonar View Sonar Zoom ViewBig Digits View POWER/LIGHT KeyKey Functions Circular Flasher ViewMenu Key Powering Up the UnitWAY Cursor Control Key Exit KeyMenu System Sonar Tab, Normal Mode Sonar Tab, Advanced ModeSimulator Start-Up Options MenuNormal Operation Exit System Status by powering your Fishing System off Accessory Test lists the accessories connected to SystemSystem Status Sonar X-PressTMMenu Operation and the input voltageTo adjust the Upper Range To adjust the SensitivitySensitivity Upper RangeTo adjust the Lower Range Chart SpeedTo adjust the Chart Speed Lower RangeBottom Range Zoom LevelBottom Lock Beam Select Sonar Menu TabTo use Beam Select Highlight Beam Select on the Sonar main menuTo change the RTS Window setting To change the Fish ID Sensitivity settingFish ID+TM Fish ID SensitivityDepth Lines Zoom WidthKHz Sensitivity Max Depth Surface ClutterNoise Filter Water Type Alarms Menu TabTo change the Water Type setting Fish ID Alarm Depth AlarmLow Battery Alarm Temp AlarmSetup Menu Tab Alarm ToneTo change the Alarm Tone setting Highlight Alarm Tone on the Alarms main menuUnits Depth User ModeUnits Temp Units DistanceSelect Views Triplog ResetRestore Defaults Temp Offset Select ReadoutsDepth Offset Speed Calibration TroubleshootingTo change the Speed Calibration setting Problem Possible Cause Display ProblemsFinding the Cause of Noise IsolationSonar Terms SpecificationsGlossary 531444-1A 323ManEnglish.qxd 11/5/2005 1234 PM 531444-1A 323ManEnglish.qxd 11/5/2005 1234 PM Receiver See Transmitter 531444-1A 323ManEnglish.qxd 11/5/2005 1234 PM Contact Humminbird
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