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

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new range, and the old sonar information would continue to scroll off the screen at the old range.

Transducer: The transducer is part of the sonar system, which mounts on the boat and is in contact with the water, that converts the electrical energy from the transmitter into sound energy, and that forms the sonar beam in turn. Internally, the transducer consists of one or more piezo electric disks that expand by very minute amounts to create the sound wave. This element also works in reverse, converting the returned sound energy back into an electrical signal that the receiver interprets. Transducers are available for many specific mounting applications for the boat, such as a transom mount, trolling motor mount, etc. Humminbird® offers many sophisticated transducers, often with multiple piezo electric elements designed to form specifically-shaped sonar beams, providing the angler with superior tools for finding and catching fish. See Transmitter and SONAR.

Transmitter: The transmitter and receiver are matched parts of the sonar system that send (transmit) and listen to (receive) the sonar signals, and work in conjunction with the transducer. Humminbird® transmitters have an extremely fast cycling design that can send signals up to 60 times per second, as well as produce the varying levels of power output needed for different depths and conditions. Additionally, the transmitter has the capability to create very precise sonar pulses needed for a high degree of target separation. Humminbird® receivers are extremely sensitive, but within a narrow "bandwidth" to discriminate against noise from external sources. Additionally, the receiver offers a wide "dynamic range" which provides the ability to receive very strong signals alternating with very weak signals, without the strong signal overwhelming the weak signal. See Transducer and Noise.

TripLog: TripLog is a Humminbird® feature that provides an on-screen counter for Elapsed Time, Average Speed and Total Distance traveled, and requires a speed input to activate the feature. TripLog appears on the Big Digits View, and can be reset to zero through the TripLog menu.

TrueArch®: TrueArch® is a Humminbird® feature that provides true fish arches, not artificial arches or symbols. Humminbird® units are capable of producing fish arches due to the wide 60° sonar beam of DualBeam PLUS™, an extremely sensitive sonar receiver. See Fish Arch.

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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 Depth Units TempUnits Distance 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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