To turn off HyperScroll

74

Pop-up Help

74

Reset Options

75

Reset Water Distance

76

Set Keel Offset

76

Sensitivity & Auto Sensitivity

78

Automatic Sensitivity

78

To turn Auto Sensitivity back on

79

Set Language

80

Software Version Information

80

Sonar Chart Mode

80

To change the chart mode color scheme

81

Sonar Page & Sonar Chart Display Options

81

Full Sonar Chart

81

Split Zoom Sonar Chart

82

Digital Data/Chart

83

Sonar Simulator

85

Stop Chart

86

Surface Clarity

87

To adjust the Surface Clarity level

87

Transparency

88

To adjust Menu Transparency level

89

Units of Measure

89

Zoom & Zoom Bar

90

Zoom Pan

91

Section 5: Troubleshooting

92

Unit won't turn on

93

Unit operates only in demo mode

93

Unit freezes, locks up, or operates erratically

93

Weak bottom echo, digital readings erratic, or no fish signals....

94

No fish arches when the Fish I.D. feature is off:

95

Noise

95

Section 6: Supplemental Material

97

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Eagle Electronics 640c manual To turn off HyperScroll

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.