Eagle Electronics 640c manual Sonar Options & Other Features, ASP Advanced Signal Processing

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Section 4: Sonar Options & Other Features

Material in this section is arranged in alphabetical order.

ASP (Advanced Signal Processing)

The ASPfeature is a noise rejection system built into the sonar unit that constantly evaluates the effects of boat speed, water conditions and interference. This automatic feature gives you the best display pos- sible under most conditions.

The ASP feature is an effective tool in combating noise. In sonar terms, noise is any undesired signal. It is caused by electrical and mechanical sources such as bilge pumps, engine ignition systems and wiring, air bubbles passing over the face of the transducer, even vibration from the engine. In all cases, noise can produce unwanted marks on the display.

The ASP feature has four settings: Off, Low, Medium and High. If you have high noise levels, try using the "High" ASP setting. However, if you are having trouble with noise, we suggest that you take steps to find the interference source and fix it, rather than continually using the unit with the high ASP setting.

There are times when you may want to turn the ASP feature off. This allows you to view all incoming echoes before they are processed by the ASP feature.

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Contents Installation and Operation Instructions Page Table of Contents Basic Sonar Quick Reference To turn off HyperScroll Page How this manual can get you out on the water, fast Read Me FirstGeneral Figuration and installation, bottom composi How Sonar Works How to Use this Manual Typographical Conventions Page Preparations Transducer InstallationSingle-frequency transom installations Pad Deadrise less than Strakes Transom Page Page Dot Transducer bracket RatchetRatchet Ratchets Bolt Transom Bottom Hull Flat-bottom hull Deep-vee hull Internal tooth washer TMB-S bracket Bolt Nut Flat washer Partial fish arches Hulls With Flotation Materials Transducer location High speed Trolling speed True bottom Second bottom Manual range setting Page Epoxy transducer to hull Speed/Temperature Sensors Optional Speed Sensor Installation Good location Power Connections Page Power connections for the sonar unit Front 72.9 173.9 23.4 137.9 157.9 Millimeter 56.9 Inch In-Dash Template Cell battery Page Keyboard Basic Sonar OperationPower/lights on and off Main Menu Pages Pages Menu showing Sonar display options Page Page Depth scale FasTrack, fish arches show as horizontal bars Basic Sonar Quick Reference Sonar Operations Page Page Important Tip Page Page Page ASP Advanced Signal Processing Sonar Options & Other FeaturesAlarms To adjust and turn on the Shallow Alarm Enabledentexit Enabledentexit Backlight and Contrast Level Calibrate Speed Chart Speed ColorLine Thin or no ColorLine Wider ColorLine Depth CursorCursor line Depth box Depth Range AutomaticDepth Range Manual FasTrack Fish I.D. Fish Symbols & DepthsPage FishTrack Frequency Change Transducer Frequency SeaFinder unit only Overlay Data HyperScrollNoise Rejection Data list showing Water Speed selected to display on Sonar Tip Ping Speed & HyperScroll Page Pop-up Help Reset Options Set Keel Offset Reset Water DistancePress MENUMENU↓ to SET Keel Offsetent Sensitivity & Auto Sensitivity Auto Sensitivityent Software Version Information Sonar Chart ModeSet Language Sonar Page & Sonar Chart Display Options Page Page Customizing the Digital Data/Chart Screen Sonar Simulator Stop Chart Surface Clarity Press ↓ to select Surface ClarityENT TransparencyUnits of Measure Zoom Bar VolumeZoom Pan Page Troubleshooting Page Page Page Supplemental Material FCC Compliance Page Eagle Electronics How to Obtain Service… Accessory Ordering Information for all countries Visit our web site
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640c specifications

Eagle Electronics has made a significant mark in the world of marine electronics with its innovative and reliable products, notably the Eagle Electronics 640C, 640cDF, and the 640c models. These devices are designed for anglers and navigators who seek advanced functionality combined with user-friendly operation.

The Eagle Electronics 640C is a high-performance fish finder that is primarily admired for its vibrant display and precise mapping capabilities. Equipped with a 640x480 pixel, full-color LCD screen, it provides crystal-clear visibility even in bright sunlight. This device uses advanced sonar technology to offer detailed underwater images, allowing users to locate fish with remarkable accuracy. The high-resolution graphics enhance the experience while providing an intuitive interface for easy navigation through its various features.

The 640cDF, a variant of the 640C, elevates the standard fish finder experience by incorporating dual-frequency sonar capabilities. This model operates on both 200 kHz and 83 kHz frequencies, allowing users to switch between narrow and wide beams based on their fishing needs. The dual-frequency technology provides a more comprehensive view of the underwater environment, making it easier to identify different types of fish and underwater structures. Additionally, the 640cDF boasts temperature sensing capabilities, giving anglers valuable data regarding water conditions that can influence fish behavior.

All models in the Eagle 640 series feature built-in GPS navigation. The integrated GPS provides a reliable mapping system that allows users to mark waypoints and create routes, significantly improving navigation efficiency. This technology is vital for those who engage in long-distance fishing trips or travel in unfamiliar waters. The GPS functionality, combined with the sonar capabilities, makes these devices essential tools for successful fishing excursions.

Furthermore, the Eagle 640 series devices come equipped with customizable display options, allowing users to tailor the information presented based on their preferences. The intuitive menu system simplifies the navigation of the device's various features, empowering users to quickly access critical data without unnecessary complications.

In summary, the Eagle Electronics 640C, 640cDF, and the 640c represent a blend of cutting-edge technology and user-centric design in the marine electronics space. With features such as high-resolution displays, dual-frequency sonar, built-in GPS navigation, and customizable settings, these devices enhance the fishing experience, making them invaluable assets for anglers and navigators alike.
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