Humminbird manual 531526-1A 747c&777c2ManEng.qxp 10/2/2006 142 AM

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Feature Memory: Feature Memory is a Humminbird® feature that retains the user's menu settings in permanent memory. Settings are retained even when the unit is powered off indefinitely.

Fish Arch: A Fish Arch is the apparent "arch" that appears on the display when any object moves through the sonar cone. The arch results from a gradual decrease in distance to an object as it moves into the sonar cone. The distance to an object changes due to the conical shape of the sonar beam, which causes the distance to be greater at the edges of the beam than at the center of the beam. When this distance change is graphed on the display, an arch appears.

Fish ID+™: Fish ID+™ is a Humminbird® feature that uses advanced sonar processing algorithms to determine if a detected object is likely to be a fish. When the sonar signal from an object meets strict parameters, the unit draws a Fish Symbol (or icon) and the digital depth of the target. On DualBeam and DualBeam PLUS™ units, fish detected in the narrow center beam are shown as shaded symbols, and fish detected in the wider beam are shown as hollow symbols.

Fish Symbol: A Fish Symbol is the graphic that is displayed on the screen when Fish ID+ determines that a sonar return is likely to be a fish. See Fish ID+.

Freeze Frame: Freeze Frame is a Humminbird® feature that pauses the sonar scrolling so that the image on screen can be studied with greater detail. See Instant Image Update.

Frequency: Frequency is a measure of the number of sound wave cycles per second of a sound impulse transmitted underwater. A typical frequency for fishfinders is 200 kHz, which offers a good balance of performance under many conditions. Lower frequencies, such as 50 kHz, are capable of penetrating to greater depths, but with less resolution. Higher frequencies, such as 455 kHz, offer greater resolution, but are limited in depth performance. Humminbird® uses a variety of frequencies that are optimized for specific applications.

Grayscale: Grayscale is the use of varying shades of gray to represent the strength of the sonar signal on the display , and is a very intuitive method of presenting information. Traditionally, the strongest sonar signals are represented in black, and progressively weaker signals are represented in progressively lighter shades of gray.

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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 QuadraBeam Plus Sonar With optional-purchase QuadraBeam Plus TransducerWideSide Sonar With optional-purchase WideSide transducerUniversal Sonar What’s On the Display About Views Sonar View Understanding Sonar History Real Time Sonar RTS Window Freeze Frame and CursorBottom 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, Default Layout Side Beam ViewSide Beam View, Classic Layout Side Beam View, Slanted Layout WideSide View WideSide ViewView Key POWER/LIGHT KeyKey Functions Menu Key WAY Cursor Control KeyExit Key Accessory Bus Powering Up the Unit 777c2Menu System Reactivate the X-Press MenuSonar Tab Normal Mode Advanced Mode Start-Up Options Menu Normal OperationSimulator System Status Self TestWith PC Connect Cable only Accessory TestPC Connect Sonar X-Press Menu Side WideSide transducer WideSide view onlySensitivity Upper Range Lower Range Side Beam Range Chart Speed Quad LayoutSonar Zoom View only Zoom LevelBottom Lock Sonar Zoom View only, when Bottom Lock is On Bottom RangeSonar Menu Tab Beam Select Fish ID+ Fish ID Sensitivity Bottom View Zoom WidthKHz Sensitivity AdvancedTo change the 455 kHz Sensitivity setting Advanced with QuadraBeam Plus transducerWideSide Sensitivity Advanced with WideSide transducerDepth Lines Surface Clutter Noise Filter Max DepthWater Type Transducer SelectAlarms Menu Tab Depth Alarm Fish ID AlarmWith optional-purchase temp. probe or Temp/Speed only Low Battery AlarmAux. Temp. Alarm Temp Alarm Alarm ToneSetup Menu Tab Units Distance Units DepthUnits Temp International onlyLanguage User ModeUnits Speed Triplog Reset Restore DefaultsSelect Readouts Advanced, Sonar view onlyDefault Sonar View Customized Sonar View Depth Offset Aux. Temp. OffsetAdvanced, with Temp/Speed only Temp OffsetSpeed Calibration Digits Format Nmea Output Views Menu Tab TransducerAccessories Menu Tab Troubleshooting Series Doesn’t Power UpDisplay Problems Problem Possible CauseFinding the Cause of Noise IsolationSeries 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 Glossary Sonar Terms531526-1A 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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