Humminbird 515, 500 series manual Sensitivity

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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 or 455 kHz Balance) that allow you to adjust the level of sensitivity for one specific beam at a time.

Sensitivity at Low		Sensitivity at Medium		Sensitivity at High

To adjust the Sensitivity:

1.Highlight Sensitivity on the Sonar X-Press™ menu.

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

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Contents Series Operations Manual Thank You Table of Contents Alarms Menu Tab Troubleshooting How Sonar Works Peak to Peak measures power output at the highest points Single Beam Sonar DualBeam SonarQuadraBeam Plus Sonar What’s On the Display Bait Ball Hard Bottom Rocky BottomStructure where fish may be hiding Views Big Digits View Side Beam View 575 Fishfinder onlySonar View Understanding Sonar History Real Time Sonar RTS WindowBottom Presentation Page Page Sonar Zoom View Sonar Zoom View200/83 kHz Split Sonar View Big Digits View Side Beam View Water Surface Line for 455 kHz Sonar History Windows Page Key Functions POWER/LIGHT KeyView Key WAY Cursor Control Key Menu KeyExit Key Powering Up the Unit 575Menu System Page Start-Up Options Menu Normal OperationSimulator System Status Self TestAccessory Test Sonar X-Press Menu Sensitivity Upper Range Advanced Sonar, Split Sonar, Big Digits Views onlyLower Range Chart Speed Bottom View Quad Layout Zoom LevelSonar Menu Tab Beam Select Fish ID+ Fish ID Sensitivity Zoom Width KHz SensitivityKHz Balance Depth Lines AdvancedSurface Clutter Noise Filter Max DepthWater Type Alarms Menu Tab Depth Alarm Fish ID AlarmLow Battery Alarm Temp AlarmAlarm Tone Setup Menu Tab Units Temp Units DepthUnits Distance Units Speed User ModeLanguage Triplog Reset Restore DefaultsSelect Views Select Readouts Advanced Sonar View onlyDepth Offset Temp Offset Speed CalibrationTroubleshooting Series Doesn’t Power UpDisplay Problems Problem Possible CauseFinding the Cause of Noise IsolationSeries Fishfinder Accessories Specifications 800 ft 250 mPolicy on Environmental Compliance Glossary Sonar TermsPage Page Page Page Receiver See Transmitter Page Page Page Page Page Page Page Page Page Page Page Page Contact Humminbird