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.

To eliminate or minimize the effects of electrical noise, first try to de- termine the cause. With the boat at rest in the water, the first thing you should do is turn all electrical equipment on the boat off. Make sure the engine is also off. Turn your sonar on, then turn off Noise Reject [also known as the ASP feature (Advanced Signal Processing)]. Sensi- tivity should be set at 90-95 percent. There should be a steady bottom signal on the display. Now turn on each piece of electrical equipment on the boat and view the effect on the sonar's display. For example, turn on the bilge pump and view the sonar display for noise. If no noise is

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Eagle Electronics 320C manual No fish arches when the Fish I.D. feature is off, Noise
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320C specifications

Eagle Electronics has made significant strides in the world of marine electronics with the introduction of the Eagle Electronics 320C. This compact, feature-packed device is designed to cater to both novice and experienced anglers, providing them with the necessary tools to enhance their fishing experience.

One of the standout features of the Eagle 320C is its high-resolution color display. With a screen size of 3.5 inches, the unit exhibits a bright and vibrant backlit display, ensuring exceptional visibility even in bright sunlight. The 320C employs a user-friendly interface, allowing quick navigation through its various functions and settings.

The 320C is equipped with advanced sonar technology, featuring dual-frequency capabilities. This enables users to switch between 83 kHz for wider coverage and 200 kHz for more precise detail. This flexibility in frequency options allows anglers to target specific fish species and efficiently optimize their fishing strategies. The device also boasts a powerful 300-watt RMS power output, ensuring clear and accurate sonar readings down to depths of 600 feet.

Another important characteristic of the Eagle 320C is its ability to display detailed bathymetric maps. With built-in mapping capabilities, users can access contour mapping, which provides essential information about the underwater landscape. This feature is especially valuable for locating structures such as submerged rocks or vegetation, which are often prime habitats for fish.

In addition to sonar and mapping functions, the Eagle 320C also includes a variety of customizable settings. Users can personalize various aspects of the display, including color palettes, sensitivity, and sonar depth range to suit their preferences. This level of customization helps maximize the device’s effectiveness in diverse fishing conditions.

Moreover, the Eagle Electronics 320C is designed with durability in mind. It features a rugged, waterproof casing that is built to withstand harsh marine environments. This resilience ensures that the device can reliably face saltwater exposure, rain, and other challenging conditions commonly encountered while fishing.

Overall, the Eagle Electronics 320C is an exceptional tool for anglers seeking a comprehensive fishing solution. With its high-resolution color display, advanced sonar capabilities, detailed mapping functionalities, and customizable settings, the 320C provides a robust platform for enhancing fishing success, making it a valuable addition to any boat.
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