Manuals / Eagle Electronics / Marine Equipment / Fish Finder

Eagle Electronics 642cDF manual No fish arches when the Fish I.D. feature is off, Noise

Models: 642c 642cDF

1 196
Download 196 pages 30.11 Kb
Page 90
Image 90

3.The water may be deeper than the sonar's ability to find the bottom. If the sonar can't find the bottom signal while it's in the automatic mode, the digital sonar display will flash continuously. It may change the range to limits far greater than the water you are in. If this hap- pens, place the unit in the manual mode, then change the range to a realistic one, (for example, 0-100 feet) and increase the sensitivity. As you move into shallower water, a bottom signal should appear.

4.Check the battery voltage. If the voltage drops, the unit's transmitter power also drops, reducing its ability to find the bottom or targets.

Bottom echo disappears at high speeds or erratic digital read- ing or weak bottom echo while boat is moving:

1.The transducer may be in turbulent water. It must be mounted in a smooth flow of water in order for the sonar to work at all boat speeds. Air bubbles in the water disrupt the sonar signals, interfering with its ability to find the bottom or other targets. The technical term for this is cavitation.

2.Electrical noise from the boat's motor can interfere with the sonar. This causes the sonar to automatically increase its discrimination or noise rejection feature. This can cause the unit to eliminate weaker signals such as fish or even structure from the display. Try using resis- tor spark plugs or routing the sonar unit's power and transducer cables away from other electrical wiring on the boat.

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

1.Make sure the transducer is pointing straight down. This is the most common problem if a partial arch is displayed.

2.The sensitivity may not be high enough. In order for the unit to dis- play a fish arch, it has to be able to receive the fish's echo from the time it enters the cone until it leaves. If the sensitivity is not high enough, the unit shows the fish only when it is in the center of the cone.

3.Use the Zoom feature. It is much easier to display fish arches when zoomed in on a small range of water than a large one. For example, you will have much better luck seeing fish arches with a 30 to 60 foot range than a 0 to 60 foot range. This enlarges the targets, allowing the dis- play to show much more detail.

4.The boat must be moving at a slow trolling speed to see fish arches. If the boat is motionless, fish stay in the cone, showing on the screen as straight horizontal lines.

NOISE

A major cause of sonar problems is electrical noise. This usually ap- pears on the sonar's display as random patterns of dots or lines. In se- vere cases, it can completely cover the screen with black dots, or cause the unit to operate erratically, or not at all.

82

Page 89 Page 91
Page 90
Image 90
Eagle Electronics 642cDF manual No fish arches when the Fish I.D. feature is off, Noise
Page 89 Page 91

642c, 642cDF specifications

Eagle Electronics has made significant strides in the world of electronics with its flagship models, the 642cDF and 642c. These devices are tailored for enthusiasts and professionals alike, offering a combination of advanced technology, user-centric design, and robust performance.

One of the standout features of the Eagle Electronics 642cDF is its high-definition display. The device boasts a vivid color screen that enhances visibility and improves user interaction, making it easier for users to navigate through various functions and settings, even in bright sunlight. The display is also designed for durability, resisting scratches and damage from regular use.

Both the 642cDF and 642c come equipped with advanced GPS capabilities, ensuring precise navigation and location tracking. This feature is crucial for outdoor activities such as hiking, boating, and off-roading. The built-in mapping software includes a vast array of preloaded topographic maps, providing users with essential information about terrain, elevation, and points of interest.

In terms of connectivity, these models excel with Bluetooth and Wi-Fi capabilities. This allows users to seamlessly connect to other devices and share data without hassle. Whether it’s syncing with a smartphone or sharing navigation data with another device, the wireless options enhance the user experience significantly.

The design of the 642cDF and 642c is also notable. Ergonomically shaped, these devices fit comfortably in hand, and the layout of buttons and controls is intuitive and user-friendly. This attention to ergonomics makes prolonged use more comfortable and reduces the likelihood of user error.

Eagle Electronics has prioritized durability in its products. Both models are water-resistant and built to withstand harsh environmental conditions, making them ideal for outdoor enthusiasts who require reliable technology. The rugged construction means users can depend on them in any situation, whether they are sailing through rain or trekking across muddy trails.

Battery life is another key characteristic. The 642cDF and 642c have been engineered to provide extended usage on a single charge, allowing users to rely on their devices during long excursions without worrying about power depletion.

In conclusion, the Eagle Electronics 642cDF and 642c stand out as top-tier electronic devices in their category. With features such as a high-definition display, advanced GPS capabilities, robust connectivity, ergonomic design, durability, and impressive battery life, they are well-suited for both casual users and professionals seeking reliable and advanced electronic solutions for their activities. As technology continues to evolve, these machines remain at the forefront, proving their worth in the ever-competitive electronics market.