Manuals / Eagle Electronics / Marine Equipment / Fish Finder

Eagle Electronics 640c Zoom & Zoom Bar, To adjust the Surface Clarity level, Surface clutter

Models: 640c 640C, 640cDF

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changing the sensitivity of the receiver, decreasing it near the surface and gradually increasing it as the depth increases.

There are three levels of surface clarity available: off, low, medium and high. The default level is off.

To adjust the Surface Clarity level:

1.From the Sonar Page, press MENU↓ to SONAR FEATURESENT↓ to

SURFACE CLARITY ENT.

Surface clutter

Sonar Features menu with Surface Clarity selected (left). Surface Clar-

ity turned off (center). Surface Clarity set at high level (right).

2. Use ↓ ↑ to select clarity level and press EXIT repeatedly.

Zoom & Zoom Bar

Zooming in the display is the easiest way to enlarge small detail, fish signals and the bottom. This unit lets you zoom in the display by pressing the Zoom In key, ZIN.

Pressing ZIN once doubles the size (2X) of all echoes on the screen. Pressing it again quadruples the size of the echoes (4X). When turned on, the zoom bar on the far right side of the screen shows which echoes will be displayed on the screen when the ZIN key is pressed.

To turn on the zoom bar, press MENU↓ to SONAR FEATURESENT. Press ↓ to ZOOM BARENTEXITEXIT. Repeat these steps to turn it off.

For example, pressing the ZIN key once will enable a 2X zoom which will show all echoes between the top and bottom of the 2X zoom bar. Pressing the key again will give a 4X zoom and only the echoes between the top and bottom of the 4X bar will show on the screen.

Press ZOUT (Zoom out) to return the display to the normal mode.

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Eagle Electronics 640C, 640cDF manual Zoom & Zoom Bar, To adjust the Surface Clarity level, Surface clutter
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640c, 640C, 640cDF 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.