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Pub. 988-0143-861
www.eaglesonar.com
Fish-Finding & Depth-Sounding Sonars
Installation and Operation
Instructions
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Copyright © 2005 LEI-Eagle All rights reserved. ® ® ® Eagle , FishMark and SeaFinder are registered trademarks of LEI No part of this manual may be copied, reproduced, republished, transmitted or distributed for any purpose, without prior written consent of Eagle Electronics. Any unauthorized commercial distribution of this manual is strictly prohibited. Eagle Electronics may find it necessary to change or end our policies, regulations, and special offers at any time. We reserve the right to do
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Table of Contents Read Me First!...................................................................................1 ® Capabilities and Specifications: FishMark 640c ..............................2 ® SeaFinder 640c DF.............................................................................2 How Sonar Works ................................................................................4 How to Use this Manual: Typographical Conventions.......................5 Arrow Keys......................
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Main Menu .........................................................................................39 Pages ..................................................................................................40 Basic Sonar Quick Reference......................................................45 Sonar Operations ...............................................................................46 Fish Symbols vs. Full Sonar Chart ...............................................50 Other Free Training Aids
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To turn off HyperScroll..................................................................74 Pop-up Help........................................................................................74 Reset Options .....................................................................................75 Reset Water Distance ........................................................................76 Set Keel Offset ...................................................................................76 Sensit
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Notes iv
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Section 1: Read Me First! How this manual can get you out on the water, fast! Welcome to the exciting world of digital sonar! We know you're anxious to begin finding fish, but we have a favor to ask. Before you grab your unit and begin installing it, please give us a moment or two to explain how our manual can help you get the best performance from your com- pact, wide-screen, fish finder. First, we want to thank you for buying an Eagle sonar. Whether you're a first time user or a professional f
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any longer, turn to the Quick Reference on page 45 and head for the water with your sonar unit!) After you have gained some experience with your sonar, you'll want to check out Section 4, which explains more advanced Sonar Options and Other Features. When you come to a sonar menu command you can look it up in the man- ual by skimming over the table of contents, just flipping through Section 3 or scanning through the sonar options in Section 4. If you're having difficulty with your sonar, you can
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Back-up memory: .......... Built-in memory stores sonar settings for decades. Languages:...................... 10; menu languages selectable by user. Sonar Frequency:...................... 50/200 kHz for SeaFinder 640c DF; 200 kHz for FishMark 640c. Transducers: .................. A dual-frequency Skimmer transducer with built-in temperature sensor is packed with the SeaFinder 640c DF. It has 35°/12° cone angles. A single-frequency Skimmer trans- ducer with built-in temperature sensor is packe
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Surface water temp: ..... Yes. Speed/distance log: ....... Optional (requires optional speed sensor). NOTICE! The storage temperature range for your unit is from -4 degrees to +167 degrees Fahrenheit (-20 degrees to +75 degrees Celsius). Ex- tended storage in temperatures higher or lower than specified will damage the liquid crystal display in your unit. This type of damage is not covered by the warranty. For more information contact the factory's Customer Service Department. The phone numbers a
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How to Use this Manual: Typographical Conventions Many instructions are listed as numbered steps. The keypad and arrow "keystrokes" appear as boldface type. So, if you're in a real hurry (or just need a reminder), you can skim the instructions and pick out what menu command to use by finding the boldface command text. The fol- lowing paragraphs explain how to interpret the text formatting for those commands and other instructions: Arrow Keys The arrow keys control a horizontal line depth cursor
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For example, instructions for turning on the Fish ID feature would look like this: 1. From the Sonar Page, press MENU|↓ to SONAR FEATURES|ENT. 2. Press → or → ↓ to FISH ID SYMBOLS|ENT|EXIT|EXIT. Translated into complete English, step 1 above would mean: "Start on the Sonar Page. Press the Menu key then repeatedly press (or press and hold) the down arrow key to scroll down the menu and select (highlight) the Sonar Features menu command. Then press the Enter key." Step 2 would mean: "Press the ri
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Section 2: Installation & Accessories Preparations You can install the sonar system in some other order if you prefer, but we recommend this installation sequence: Caution: You should read over this entire installation section before drill- ing any holes in your vessel! 1. Determine the approximate location for the sonar unit, so you can plan how and where to route the cables for the transducer and power. This will help you make sure you have enough cable length for the de- sired configuration.
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adjustable strap. These are "kick-up" mounting brackets. They help prevent damage if the transducer strikes an object while the boat is moving. If the transducer does "kick-up" the bracket can easily be pushed back into place without tools. Read these instructions carefully before attempting the installation. Determine which of the installation methods is right for your boat. Remember, the transducer location and installation is the most critical part of a sonar installation. Recommended Tools a
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grit sandpaper, specially formulated epoxy adhesive available from LEI (see ordering information on the inside portion of the back cover). A sandwich hull also requires polyester resin. Selecting a Transducer Location 1. The location must be in the water at all times, at all operating speeds. 2. The transducer must be placed in a location that has a smooth flow of water at all times. If the transducer is not placed in a smooth flow of water, interference caused by bubbles and turbulence will sho
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5. If possible, route the transducer cable away from other wiring on the boat. Electrical noise from engine wiring, bilge pumps and aerators can be displayed on the sonar's screen. Use caution when routing the trans- ducer cable around these wires. CAUTION: Clamp the trans- ducer cable to transom near the transducer. This will help prevent the transducer from entering the boat if it is knocked off at high speed. Good location Poor location Good location Good location Poor angle Good and poor tra
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However, there are times when you may need to adjust the transducer slightly higher or lower. The slots in the mounting brackets allow you to loosen the screws and slide the transducer up or down. If you fre- quently lose bottom signal lock while running at high speed the trans- ducer may be coming out of the water as you cross waves or wakes. Move the transducer a little lower to help prevent this. If you cruise or fish around lots of structure and cover, your transducer may be frequently kicki
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Lack of angle adjustment can be particularly troublesome on hulls that sit with the bow high when at rest or at slow trolling speeds. Third, a transducer CAN NOT shoot through wood and metal hulls. Those hulls require either a transom mount or a thru-hull installation. Fourth, if your Skimmer transducer has a built in temp sensor, it will only show the temperature of the bilge, not the water surface temp. Follow the testing procedures listed in the shoot-thru-hull installation section at the end
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Dot Align plastic ratchets in bracket. B. Two-piece bracket: Locate the four plastic ratchets in the trans- ducer's hardware package. Press two ratchets into the sides of the plastic bracket and two on either side of the transducer as shown in the follow- ing illustrations. Notice there are letters molded into each ratchet. Place the ratchets into the bracket with the letter "A" aligned with the align- ment mark molded into the bracket. Place the ratchets onto the trans- ducer with the letter "A
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Transducer bracket Transducer Ratchet Ratchet Add ratchets to bracket and transducer. 2. Aligning the transducer on the transom. A. One-piece bracket: Slide the transducer between the two ratch- ets. Temporarily slide the bolt though the transducer assembly and hold it against the transom. Looking at the transducer from the side, check to see if it will adjust so that its face is parallel to the ground. If it does, then the "A" position is correct for your hull. If the transducer's face isn't pa
