Sonar Menu with Sensitivity command selected (left).

The Sensitivity Control Bar (right).

To adjust sensitivity in manual mode:

1. First, turn off Auto Sensitivity: from the Sonar Page, press MENU↓

to AUTO SENSITIVITYENT.

2.Press ↑ to SENSITIVITYENT and the Sensitivity Control Bar appears. Press ↓ ↑ to pick a different sensitivity setting. When it is set at the desired level, press EXIT.

To turn Auto Sensitivity back on:

From the Sonar Page, press MENU↓ to AUTO SENSITIVITYENTEXIT.

Tip:

For quicker sensitivity adjustments, leave the Sensitivity Control Bar on the screen as the chart scrolls. You can see the changes on the screen as you press the up and down arrows. This is handy when there is a lot of clutter in the water and you are matching the sensitivity to rapidly changing water conditions.

Sonar Chart Mode

The default color scheme for the sonar chart is White Background, but we offer other variations to suit your viewing preferences. You can se- lect the chart to be displayed in Grayscale, Reverse Grayscale, Blue Background, Nightview, IceView or Bottom Color Tracking.

To change the chart mode color scheme:

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

2.Press ↓ → to SONAR CHART MODEENT.

3.Press ↓ ↑ to Mode NameENT.

4.Press EXITEXIT to return to the Sonar Page.

74

Page 81 Page 83
Page 82
Image 82
Eagle Electronics 640C, 640cDF Sonar Chart Mode, To adjust sensitivity in manual mode, To turn Auto Sensitivity back on
Page 81 Page 83

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.
Top Page Image Contents