Humminbird 777c2, 747c manual Sensitivity

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531526-1_A - 747c_&_777c2_Man_Eng.qxp 10/2/2006 1:42 AM Page 41

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, 455 kHz Balance or Wideside Sensitivity) which 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 747c and 777c2 Operations Manual Thank You Table of Contents Setup Menu Tab Views Menu Tab Accessories Menu Tab Troubleshooting How Sonar Works 531526-1A 747c&777c2ManEng.qxp 10/2/2006 140 AM DualBeam Plus Sonar With optional-purchase QuadraBeam Plus Transducer QuadraBeam Plus SonarWith optional-purchase WideSide transducer WideSide SonarUniversal Sonar What’s On the Display About Views Sonar View Understanding Sonar History Freeze Frame and Cursor Real Time Sonar RTS WindowBottom Presentation 531526-1A 747c&777c2ManEng.qxp 10/2/2006 141 AM Sonar Zoom View Sonar Zoom View200/83 kHz Split Sonar View Big Digits View Big Digits ViewCircular Flasher View Side Beam View Side Beam View, Default LayoutSide Beam View, Classic Layout Side Beam View, Slanted Layout WideSide View WideSide ViewView Key POWER/LIGHT KeyKey Functions WAY Cursor Control Key Menu KeyExit Key Accessory Bus 777c2 Powering Up the UnitReactivate the X-Press Menu Menu SystemSonar Tab Normal Mode Advanced Mode Normal Operation Start-Up Options MenuSimulator Self Test System StatusWith PC Connect Cable only Accessory TestPC Connect Sonar X-Press Menu WideSide transducer WideSide view only SideSensitivity Upper Range Lower Range Side Beam Range Quad Layout Chart SpeedSonar Zoom View only Zoom LevelBottom Lock Bottom Range Sonar Zoom View only, when Bottom Lock is OnSonar Menu Tab Beam Select Fish ID+ Fish ID Sensitivity Zoom Width Bottom ViewAdvanced KHz SensitivityAdvanced with QuadraBeam Plus transducer To change the 455 kHz Sensitivity settingAdvanced with WideSide transducer WideSide SensitivityDepth Lines Surface Clutter Max Depth Noise FilterTransducer Select Water TypeAlarms Menu Tab Fish ID Alarm Depth AlarmWith optional-purchase temp. probe or Temp/Speed only Low Battery AlarmAux. Temp. Alarm Alarm Tone Temp AlarmSetup Menu Tab Units Temp Units DepthUnits Distance International onlyLanguage User ModeUnits Speed Restore Defaults Triplog ResetAdvanced, Sonar view only Select ReadoutsDefault Sonar View Customized Sonar View Aux. Temp. Offset Depth OffsetAdvanced, with Temp/Speed only Temp OffsetSpeed Calibration Digits Format Nmea Output Transducer Views Menu TabAccessories Menu Tab Series Doesn’t Power Up TroubleshootingProblem Possible Cause Display ProblemsIsolation Finding the Cause of NoiseSeries Fishing System Accessories 531526-1A 747c&777c2ManEng.qxp 10/2/2006 142 AM Additional details Specifications 531526-1A 747c&777c2ManEng.qxp 10/2/2006 142 AM Sonar Terms Glossary531526-1A 747c&777c2ManEng.qxp 10/2/2006 142 AM 531526-1A 747c&777c2ManEng.qxp 10/2/2006 142 AM 531526-1A 747c&777c2ManEng.qxp 10/2/2006 142 AM 531526-1A 747c&777c2ManEng.qxp 10/2/2006 142 AM Receiver See Transmitter 531526-1A 747c&777c2ManEng.qxp 10/2/2006 142 AM 531526-1A 747c&777c2ManEng.qxp 10/2/2006 142 AM 531526-1A 747c&777c2ManEng.qxp 10/2/2006 142 AM 531526-1A 747c&777c2ManEng.qxp 10/2/2006 142 AM 531526-1A 747c&777c2ManEng.qxp 10/2/2006 142 AM 531526-1A 747c&777c2ManEng.qxp 10/2/2006 142 AM Contact Humminbird

747c, 777c2 specifications

The Humminbird 777c2 and 747c are exemplary fish finders that have made a significant impact on the fishing community, offering a host of features and technologies aimed at enhancing the angling experience. These devices are particularly revered for their user-friendly interfaces and advanced sonar capabilities, catering to both novice and seasoned fishermen alike.

One of the main features of the Humminbird 777c2 is its high-resolution color display. The 7-inch screen provides vibrant visuals, allowing users to easily interpret sonar readings and underwater structures. The screen's clarity ensures that users can spot fish and understand their surroundings in a variety of lighting conditions.

The DualBeam PLUS sonar technology in both models allows for versatility in fishing. This technology combines a wide cone beam for locating fish in a broader area with a narrow beam that provides detailed imaging of the bottom. This dual capability allows anglers to adapt their strategies depending on the fishing situation, whether they are exploring shallow waters or searching deeper depths.

Another notable characteristic is the built-in GPS functionality. The Humminbird 777c2 and 747c come equipped with advanced mapping capabilities, including the ability to create and save waypoints. This feature is a game-changer for fishermen, as it enables them to mark productive fishing spots and navigate efficiently back to them. The integration of navionics charts enhances navigation, providing detailed maps of lakes and coastal waters.

Furthermore, both models boast a user-friendly menu system, making it easy to adjust settings and access various functions. The interface is designed to minimize distractions, allowing users to focus on fishing. Customizable display options enable anglers to tailor the information they see, ensuring that vital sonar data is always at their fingertips.

The durability of the Humminbird 777c2 and 747c is another critical aspect, as these devices are built to withstand harsh marine environments. With weatherproof casings and reliable power sources, anglers can trust that their fish finder will perform consistently, even in challenging conditions.

In conclusion, the Humminbird 777c2 and 747c represent some of the best technology available in modern fish finders. With features such as a high-resolution color display, advanced sonar capabilities, built-in GPS, and a rugged design, these devices significantly enhance the fishing experience, making them a worthwhile investment for anyone serious about the sport.
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