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Eagle FISHMARK 640C Installation And Operation Instructions Manual

Fish-finding & depth-sounding sonars.
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Pub. 988-0143-861
Fish-Finding & Depth-Sounding Sonars
Installation and Operation


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   Summary of Contents for Eagle FISHMARK 640C

  • Page 1

    Pub. 988-0143-861 Fish-Finding & Depth-Sounding Sonars Installation and Operation Instructions...

  • Page 2

    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 so without notice.

  • Page 3: Table Of Contents

    Read Me First! ...1 Capabilities and Specifications: FishMark ® SeaFinder 640c DF...2 How Sonar Works ...4 How to Use this Manual: Typographical Conventions...5 Arrow Keys ...5 Keyboard ...5 Menu Commands ...5 Instructions = Menu Sequences ...5 Section 2: Installation & Accessories...7 Preparations...7 Transducer Installation...7 Recommended Tools and Supplies ...8...

  • Page 4

    Main Menu ...39 Pages ...40 Basic Sonar Quick Reference ...45 Sonar Operations ...46 Fish Symbols vs. Full Sonar Chart ...50 Other Free Training Aids ...50 Section 4: Sonar Options & Other Features ...52 ASP (Advanced Signal Processing) ...53 To change the ASP level ...54 Alarms ...54 Depth Alarms ...55 Zone Alarm ...56...

  • Page 5

    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 &...

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  • Page 7: Read Me First

    First, we want to thank you for buying an Eagle sonar. Whether you're a first time user or a professional fisherman, you'll discover that your unit is easy to use, yet capable of handling demanding sonar tasks.

  • Page 8: Capabilities And Specifications: Fishmark ® 640c

    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.

  • Page 9

    SeaFinder 640c DF. It has 35°/12° cone angles. A single-frequency Skimmer trans- ducer with built-in temperature sensor is packed with the FishMark 640c. It has a 20° cone angle. Transducers operate at speeds up to 70 mph (61 kts) peak/500 watts RMS.

  • Page 10: How Sonar Works

    Sonar has been around since the 1940s, so if you already know how it works, skip ahead to the next segment on the typographical conventions used in this manual. But, if you have never owned a sonar fish finder, this segment will explain the under water basics.

  • Page 11: How To Use This Manual: Typographical Conventions

    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.

  • Page 12

    For example, instructions for turning on the Fish ID feature would look like this: 1. From the Sonar Page, press |↓ to MENU ONAR EATURES 2. Press → or → ↓ to ID S EXIT EXIT YMBOLS Translated into complete English, step 1 above would mean: "Start on the Sonar Page.

  • Page 13: Section 2: Installation & Accessories

    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.

  • Page 14: Recommended Tools And Supplies

    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.

  • Page 15: Selecting A Transducer Location

    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.

  • Page 16: How Low Should You Go

    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.

  • Page 17: Shoot-thru-hull Vs. Transom Mounting

    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.

  • Page 18: Transom Transducer Assembly And Mounting

    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.

  • Page 19

    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.

  • Page 20

    Transducer bracket 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.

  • Page 21

    Ratchets Insert bolt and check transducer position on transom. B. Two-piece bracket: Assemble the transducer and bracket as shown in the following figure. Temporarily slide the bolt though the transducer assembly but don't tighten the nut at this time. Hold the assembled transducer and bracket against the transom.

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    Flat washer Assemble transducer and bracket. 3. Assembling the transducer. A. One-piece bracket: Once you determine the correct position for the ratchets, assemble the transducer as shown in the following figure. Don't tighten the lock nut at this time. Assemble transducer and bracket. B.

  • Page 23

    Mark the center of each slot for the mounting screw pilot holes. You will drill one hole in the center of each slot. Drill the holes. For the one-piece bracket, use the #29 bit (for the #10 screws). For the two-piece bracket, use the #20 bit (for the #12 screws).

  • Page 24

    tighten the lock nut! If you do, the transducer won't "kick-up" if it strikes an object in the water. Flat-bottom hull Align transducer centerline with hull bottom and attach transducer to transom. Rear view of dual-frequency Skimmer shown. 6. Route the transducer cable through or over the transom to the sonar unit.

  • Page 25: Trolling Motor Bracket Installation (single-frequency Only)

    Caution: If you drill a hole in the transom for the cable, make sure it is lo- cated above the waterline. After installation, be sure to seal the hole with the same marine grade above- or below-waterline seal- ant used for the mounting screws. 7.

  • Page 26: Transducer Orientation And Fish Arches

    Transducer mounted on trolling motor, side view. Transducer Orientation and Fish Arches If you do not get good fish arches on your display, it could be because the transducer is not parallel with the ground when the boat is at rest in the water or at slow trolling speeds.

  • Page 27: Shoot-thru-hull Preparation

    If the arch slopes up – but not back down – then the front of the trans- ducer is too high and needs to be lowered. If only the back half of the arch is printed, then the nose of the transducer is angled too far down and needs to be raised.

  • Page 28: Testing Determines Best Location

    For example, some (but not all) manufacturers use a layer of fiberglass, then a core of balsa wood, finishing with an outer layer of fiberglass. Re- moving the inner layer of fiberglass and the balsa wood core exposes the outer layer of fiberglass. The transducer can then be epoxied directly to the outer layer of fiberglass.

  • Page 29

    harder (more rocky) the bottom, the easier it will be to get a second bot- tom signal. Don't touch the controls once they've been set. True bottom Second bottom Manual range setting Example of a second bottom signal. Unit is in 30 feet of water, with range set at 80 feet and sensitivity set at 87 percent 2.

  • Page 30: Shoot-thru-hull Installation

    4. Most people can get good results by following steps 1 through 3, so this step is optional. If you want to make an extra effort to be absolutely sure that your selected location will work under all conditions, make a test run with the boat on plane and observe the bottom signal.

  • Page 31

    Sand this surface (unit's face) Orient the Skimmer with the nose facing the bow of the boat. WARNING: Use only the epoxy available from LEI. It has been for- mulated to work with these installation procedures. Other epoxy types may be too thin or may not cure to the right consistency for optimum transducer performance.

  • Page 32: Speed/temperature Sensors

    3. Press the transducer into the epoxy, twisting and turning it to force any air bubbles out from under the transducer face. Stop pressing when you bottom out on the hull. When you're finished, the face of the trans- ducer should be parallel with the hull, with a minimum amount of ep- oxy between the hull and transducer.

  • Page 33: Optional Speed Sensor Installation

    Accessory socket Temp sensor Speed sensor or combo speed/ temp sensor. Sonar unit with external temp sensor, external speed sensor, or combo speed/temp sensor. The primary temperature sensor is built Optional Speed Sensor Installation All the units in this series can display speed and distance traveled, but only the SeaFinder 640c DF comes packed with a speed sensor.

  • Page 34

    Recommended tools for this job include: drill, 5/8" drill bit, 1/8" drill bit for pilot holes, screwdriver. Required supplies for this job include: four #8 stainless steel wood screws (3/4" long), high quality, marine grade above- or below-waterline caulking compound. First find a location on the boat's transom where the water flow is smooth- est.

  • Page 35: Power Connections

    Transom Speed sensor mounting configuration: side view (left) and rear view (right.) Route the sensor's cable through or over the transom to the sonar unit. If you need to drill a hole in the transom to pass the connector through, the required hole size is 5/8".

  • Page 36

    Caution: When using the unit in a saltwater environment, we strongly rec- ommend that you shut off the power supply to the power cable when the unit is not in use. When the unit is turned off but still connected to a power supply, electrolysis can occur in the power cable plug.

  • Page 37: Mounting The Unit: Bracket, In-dash Or Portable

    Power connections for the sonar unit. WARNING: Do not use this product without a 3-amp fuse wired into the power cable! Failure to use a 3-amp fuse will void your warranty. This product must be independently fused with the enclosed 3-amp fuse (or equivalent), even if you connect to a fused accessory or power buss.

  • Page 38: Bracket Installation

    Bracket Installation Mount the unit in any convenient location, provided there is clearance behind the unit when it's tilted for the best viewing angle. You should also make sure there is enough room behind the unit to attach the power and transducer cables. A drawing on the next page shows the dimensions of a gimbal-mounted sonar unit.

  • Page 39

    sure to leave enough slack in the cables to allow tilting or swiveling the unit. If you choose to fill in the hole, be sure to position the cables against the rear edge of the hole as you apply the fill material. 137.9 [5.43] Front view (left) and side view (right) showing dimensions of the...

  • Page 40: In-dash Installation

    Portable Installation Like many Eagle products, this sonar unit is capable of portable opera- tion by using an optional portable power pack. The power pack and an optional portable transducer expand the uses of your sonar unit. The...

  • Page 41

    The portable power pack can be used with eight "D" cell alkaline bat- teries or an optional sealed, rechargeable battery. For set-up directions, refer to the pack's instruction sheet. "D" cell battery Install batteries in power pack battery adapter.

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  • Page 43: Basic Sonar Operation

    Basic Sonar Operation This section addresses the unit's most basic sonar operations. The in- structions presented in Sec. 3 follow a chronological order. Sec. 4, Sonar Options & Other Features, will discuss the more advanced functions and utilities. Material in Sec. 4 is arranged in alphabetical order. Before you turn the sonar unit on, it's a good idea to learn about the dif- ferent keys, the Main Menu, the four Page screens and how they all work together.

  • Page 44: Power/lights On And Off

    1. PWR/LIGHT (Power & Light) – The PWR key turns the unit on and off and controls the backlight level. 2. PAGES – Pressing this and the ↑ and ↓ arrow keys switches the unit between the three different page display options. (Full Sonar Chart, Split Zoom Sonar Chart and Digital Data.) 3.

  • Page 45: Main Menu

    Turn off the unit by pressing and holding the key for 3 seconds. Main Menu The unit has a Main Menu which contains both function and setup op- tion commands. The instructions in this section will deal with sonar functions, the basic commands that make the unit show sonar signals on the screen.

  • Page 46

    The Main Menu commands and their functions: Screen command changes the contrast, brightness or display mode. Sounds command enables or disables the sound, set the volume or set the alarm style. Transparency command adjusts the level of transparency for dialogs. Sonar Alarms command turns sonar alarms on or off and changes alarm thresholds.

  • Page 47

    Pages Menu showing Sonar display options. All of the display options show the sonar chart in some format. This is a "cross-section" view of the water column beneath the boat. The chart moves across the screen, displaying sonar signal echoes that represent fish, structure and the bottom.

  • Page 48

    Sonar page in Split Zoom Sonar Chart display mode. Sonar page in Digital Data display mode.

  • Page 49

    Sonar Page Menu. Most of these functions are discussed in Sec. 4. The Sonar Page has its own menu which is used for some advanced func- tions and for setting various options. Sonar Options and other features are discussed in Sec. 4. To access the Sonar Page menu press once.

  • Page 50

    Digital data overlay (depth & temperature) Fish arches Bottom signal Sonar Page showing full sonar chart mode. Surface signal Surface clutter Depth scale In FasTrack, fish arches show as horizontal bars.

  • Page 51: Basic Sonar Quick Reference

    Basic Sonar Quick Reference 1. Mount the transducer and unit. Connect the unit to electric power and the transducer. 2. Launch your boat. 3. To turn the unit on press and release the 4. Head for your fishing spot. The unit should automatically display digital depth and surface water temperature in the corner of the screen.

  • Page 52: Sonar Operations

    depth appears in a box at the right end of the cursor line. To clear the cursor, press EXIT 9. If you are drifting at a very low speed or anchored, you are not mov- ing fast enough for a fish to return the tell-tale fish arch signal. As you drift over a fish, or as a fish swims through the transducer's signal cone, the fish echo will appear as a straight line suspended between the surface and the bottom.

  • Page 53

    Fig. 1 Fig. 3 These figures show results of different sensitivity levels on the same lo- cation. Fig. 1: Sensitivity at 88 percent, determined by Auto Sensitivity. Typical of full auto mode. Fig. 2: Sensitivity set at 75 percent. Fig. 3: Sen- sitivity set at 50 percent.

  • Page 54

    Adjusting sensitivity in Auto Sensitivity Mode is similar to manually adjusting a car's speed with the accelerator pedal while cruise control is on. You can tell the car to run faster, but when you let off the gas the cruise control automatically keeps you from running slower than the minimum speed setting.

  • Page 55

    Sonar Menu (left) with Sensitivity command selected. The Sensitivity NOTE: If you want to change the sensitivity in Manual Mode, first turn off Auto Sensitivity. From the Sonar Page press |↑ to ENSITIVITY sensitivity setting. When it's set at the desired level press Important Tip: While you are experimenting and learning, it's possible to scramble the settings so that the sonar picture disappears from your screen.

  • Page 56: Fish Symbols Vs. Full Sonar Chart

    Fish Symbols vs. Full Sonar Chart You may have noticed in the quick reference we used fish arches in full sonar chart mode for our example instead of the popular Fish I.D. fish symbol feature. Here's why. Fish I.D. is an easier way for a sonar novice to recognize a fishy signal return when he sees it.

  • Page 57

    Aside from being just plain fun, this program can help you learn both basic and advanced operations without burning boat fuel. Eagle is one of the first sonar manufacturers to provide this type of training tool for customers.

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  • Page 59: Section 4: Sonar Options & Other Features

    Section 4: Sonar Options & Other Features Material in this section is arranged in alphabetical order. ASP (Advanced Signal Processing) The ASP feature is a noise rejection system built into the sonar unit that constantly evaluates the effects of boat speed, water conditions and interference.

  • Page 60: To Change The Asp Level

    Sonar Menu (left) with Sonar Features selected. In the Sonar Features menu (center) the SeaFinder's Noise Rejection feature is se- lected with ASP in the default low setting. The Noise Rejection feature (far right) is set the same in the FishMark unit. To change the ASP level: 1.

  • Page 61: Depth Alarms

    Depth Alarms The depth alarms sound a tone when the bottom signal goes shallower than the shallow alarm's setting or deeper than the deep alarm's set- ting. For example, if you set the shallow alarm to 10 feet, the alarm will sound a tone if the bottom signal is less than 10 feet.

  • Page 62: Zone Alarm

    3. Press ← to Shallow Alarm 4. To turn the alarm off press To switch to a different depth setting, open the Sonar Alarms menu and repeat the instructions in step 3 above. To adjust and turn on the Deep Alarm: 1.

  • Page 63: Fish Alarm

    Sonar Alarms menu (left) with Adjust Zone command selected. Adjust Zone Alarm selection box (right) with Upper Limit selected. 4. Press |← to Zone Alarm . Now, any echo — EXIT EXIT NABLED fish, bottom, structure — within the zone alarm's depth range will trig- ger the zone alarm.

  • Page 64: Backlight And Contrast Level

    Sonar Alarms menu with Fish Alarm selected. The check box to the left is blank, indicating the alarm is turned off. To turn the Fish Alarm on: 1. Press |↓ to Fish Alarm| ALARM 2. To turn off the alarm, press Backlight and Contrast Level When you turn the unit on it defaults to the maximum backlight level.

  • Page 65: Calibrate Speed

    The unit's backlight level can be controlled from the Screen menu. Calibrate Speed The speed sensor can be calibrated to compensate for inaccuracies. Be- fore you change the setting, first calculate the percentage that the speed is off. You will enter this percentage in a moment. For example, if you figure the sensor is reading 10 percent faster than actual speed, you will enter –...

  • Page 66: Chart Speed

    Chart Speed The rate that echoes scroll across the screen is called the chart speed. The default is maximum. We recommend you leave the speed set at de- fault for virtually all fishing conditions. However, you might consider experimenting with chart speed when you are stationary or drifting very slowly.

  • Page 67: Colorline

    1. From the Sonar Page, press 2. The Chart Speed Control Bar appears. Press ↓ to decrease chart speed or press ↑ to increase chart speed. 3. When it's set at the desired level, press ColorLine ColorLine lets you distinguish between strong and weak echoes. It "paints"...

  • Page 68: Depth Cursor

    Sonar Page menu (left) with ColorLine command selected. The ColorLine control bar is shown at right. Thin or no ColorLine Little ColorLine (left) indicates a soft bottom, probably sand or mud. The wider ColorLine (right) indicates a harder, rocky bottom. Depth Cursor The depth cursor consists of a horizontal line with a digital depth box on the right side.

  • Page 69: Depth Range - Automatic

    Sonar Page menu (left) with Depth Cursor command selected. Sonar chart (right) with the depth cursor active. The school of fish is 31.91 The cursor can be moved to any location on the screen, letting you pin- point the depth of a target. 1.

  • Page 70: Depth Range - Manual

    Sonar Page menu (left) with Depth Range command selected. The Depth Range control scale is shown at right. 2. The Depth Range control scale appears. Press ↑ or ↓ to select a dif- ferent depth range. A blue bar highlights the selected range. The lighter numbers cannot be selected.

  • Page 71: Fastrack

    NOTE: The sonar's depth capability depends on the transducer installa- tion, water and bottom conditions and other factors. FasTrack This feature automatically converts all echoes to short horizontal lines on the display's far right side. The graph on the rest of the screen con- tinues to operate normally.

  • Page 72

    There are several fish symbol sizes. These are used to designate the relative size between targets. In other words, Fish I.D. displays a small fish symbol when it thinks a target is a small fish, a medium fish sym- bol on a larger target and so on. The sonar's microcomputer is sophisticated, but it can be fooled.

  • Page 73: To Turn The Fish I.d. Feature On

    To turn the Fish I.D. feature on: 1. From the Sonar Page, press 2. Press → to To turn off Fish I.D., repeat the instructions in step 2. FishTrack The FishTrack feature shows the depth of a fish symbol when it ap- pears on the display.

  • Page 74: Frequency (change Transducer Frequency) (seafinder Only)

    Frequency (Change Transducer Frequency) (SeaFinder unit only) The SeaFinder transducer operates with both 200 kHz and 50 kHz. The 200 kHz frequency has a 12° cone angle and the 50 kHz frequency has a 35° cone angle. The default frequency is 200 kHz which is best for shallow water (about 300 feet or less) conditions.

  • Page 75: To Change The Frequency Setting To 50 Khz

    To change the frequency setting to 50 kHz: 1. From the Sonar Page, press 2. Press ↓ then → to Transducer Freq.| 3. Press EXIT EXIT To change the frequency setting to 200 kHz: 1. From the Sonar Page, press 2.

  • Page 76

    Overlay Data command (left) on the Sonar Menu. Overlay Data Shown selection menu at right. In this example, Depth will be displayed in a large font. When selected, the data type shifts to the top of the data list and a check mark appears beside the data type.

  • Page 77

    3. To return to the previous page, press To turn off displayed data: 1. Press |↓ to MENU 2. Press ↓ or ↑ to select Data Type| pears from the top of the list and reverts to its previous, unchecked po- sition.

  • Page 78: Ping Speed & Hyperscroll

    Sonar Page with Overlay Data turned on. This example shows Depth, Water Temperature and Water Speed. NOTE: Some data types can be displayed in only one font size. If that is the case, the Data Size box will not be displayed for that data type. Ping Speed &...

  • Page 79: To Change Ping Speed

    When using HyperScroll, you may also need to manually decrease the sensitivity for optimum performance. Depending on water depth and other conditions, HyperScroll may cause a second bottom echo to return to the transducer during the next ping cycle or sounding. This can result in a large amount of clutter appearing on the screen.

  • Page 80: To Turn Off Hyperscroll

    2. The Sensitivity Control Bar appears. Press ↓ to decrease sensitivity; press ↑ to increase sensitivity. When it's set at the desired level, press . When you reach the maximum or minimum limit a tone sounds. EXIT To turn off HyperScroll: 1.

  • Page 81: Reset Options

    Example showing the Pop-up Help message for the Sensitivity com- mand located on the Sonar Menu. Reset Options This command is used to reset all features, options and settings to their original factory defaults. This is useful when you have changed several settings and want to return the unit to basic automatic operation.

  • Page 82: Reset Water Distance

    Main Menu (left) with Reset Options command selected. The Reset Op- tions dialog box (right) with "Yes" selected. Reset Water Distance The sonar chart's Digital Data display option includes a box that shows distance traveled, called Water Distance. This information is calculated from an optional water speed sensor.

  • Page 83

    grounding or striking underwater structure. The Keel Offset feature eliminates the need for the navigator to mentally calculate how much water is under the keel. Keel Offset lets you calibrate the digital depth, chart depth scale, chart cursor depth and fish symbol depth displayed on the screen. To calibrate the depth indicators, first measure the distance from the face of the transducer to the lowest part of the boat.

  • Page 84: Sensitivity & Auto Sensitivity

    4. Press → to the second number, them press ↑ to change the num- ber to 5, then press the water depth from surface to bottom. Sensitivity & Auto Sensitivity The sensitivity controls the ability of the unit to pick up echoes. Sensi- tivity can be adjusted because water conditions vary greatly.

  • Page 85: To Turn Auto Sensitivity Back On

    level in manual mode the unit will continue to use that exact sensitivity setting until you change it or revert to auto mode. To adjust sensitivity in auto mode: 1. Press MENU 2. The Sensitivity Control Bar appears. Press ↓ to decrease sensitivity. Press ↑...

  • Page 86: Set Language

    NOTE: To return to the original factory setting for Auto Sensitivity, see the entry in this section on Reset Options. If sensitivity is in manual mode, the Reset Options command will switch back to Auto mode. Tip: For quicker sensitivity adjustments, try leaving the Sensitivity Control Bar on the screen as the chart scrolls.

  • Page 87: To Change The Chart Mode Color Scheme

    To change the chart mode color scheme: 1. From the Sonar Page, press |↓ to MENU ONAR EATURES 2. Press → to ONAR HART 3. Press ↓ or ↑ to Mode Name| 4. Press to return to the Sonar Page. EXIT EXIT Sonar Page &...

  • Page 88: Split Zoom Sonar Chart

    The FasTrack™ display shows just to the right of the scale. This changes all echoes into short horizontal bars, replicating a flasher so- nar. The zoom bar on the far right shows the area that's zoomed when the zoom is in use. (See the Zoom section for more information.) This image of the Full Sonar Chart shows the Overlay Data (depth and water temperature) readings set at different text sizes.

  • Page 89: Digital Data/chart

    Split Zoom Sonar Chart. The left image shows the left split screen window zoomed to 2X. The right image shows the left split screen win- dow zoomed to 4X. Digital Data/Chart This mode shows the chart on the right side of the screen. The left side has five large digital data boxes or windows containing (by default): Water Depth;...

  • Page 90

    Digital Data/Chart Customizing the Digital Data/Chart Screen The Digital Data/Chart screen can be customized to show digital data different from the defaults first shown. To customize this screen: 1. From the Sonar Page (in Digital Data mode), press |↓ to MENU USTOMIZE The Sonar Menu (left) showing the Customize command highlighted.

  • Page 91: Sonar Simulator

    2. The Water Speed box title bar flashes, indicating the box contents can be changed. Press Water Speed has been selected to replace Water Depth in the top digital Tip: You can customize other digital data boxes before returning to the Sonar Page.

  • Page 92: Stop Chart

    Main Menu with Sonar Simulator command selected. The Simulator is turned off when the box is unchecked. NOTE: If you turn the unit on before attaching a transducer, it may enter a demo mode. The words "demo mode" flash on the bottom of the screen and a sonar chart plays much like the simulator.

  • Page 93: Surface Clarity

    Sonar Menu with Stop Chart command selected. The box is unchecked, indicating that the chart is scrolling across the screen. Surface Clarity The markings extending downward from the zero line on the chart are called "surface clutter." These markings are caused by wave action, boat wakes, temperature inversion and more.

  • Page 94: Transparency

    Sonar Features menu with Surface Clarity selected (at left, dual- frequency menu; at right, single-frequency menu). 2. Press ↓ to select Surface Clarity| Surface clutter In the illustration at left, Surface Clarity is turned off. The right view shows Surface Clarity set at High. Transparency Use the transparency menu to adjust the transparency of menu win- dows.

  • Page 95: To Adjust Menu Transparency Level

    Experiment with this feature until you find the right level of transpar- ency for your eyes. Main Menu with Transparency command selected. To adjust Menu Transparency level: Press MENU MENU appears. Press ↑ or ↓ to move the bar. The lower end of the scale makes the menus opaque;...

  • Page 96: Zoom & Zoom Bar

    The Units of Measure Menu. To set Units of Measure: Press ↓ to the desired units, then press ENT. After all the options are set as desired, press to return to the EXIT|EXIT page display. Volume This command adjusts the speaker volume, which controls the sound levels for keystrokes and alarms.

  • Page 97: Zoom Pan

    Pressing once doubles the size (2X) of all echoes on the screen. Pressing it again quadruples the size of the echoes (4X). Press the Zoom Out key, , to return the display to the normal mode. ZOUT Sonar Page (left) in normal view. Same view (center) zoomed to 2X. Sonar Page zoomed to 4X is shown at right.

  • Page 98


  • Page 99: Section 5: Troubleshooting

    Section 5: Troubleshooting If your unit is not working, or if you need technical help, please use the following troubleshooting section before contacting the factory customer service department. It may save you the trouble of returning your unit for repair. For contact information, refer to the last page, just inside the back cover of this manual.

  • Page 100: Weak Bottom Echo, Digital Readings Erratic, Or No Fish Signals

    Weak bottom echo, digital readings erratic, or no fish signals: 1. Make sure the transducer is pointing straight down. Clean the face of the transducer. Oil, dirt and fuel can cause a film to form on the transducer, reducing its effectiveness. If the transducer is mounted inside the hull, be sure it is shooting through only one layer of fiber- glass and that it is securely bonded to the hull.

  • Page 101: No Fish Arches When The Fish I.d. Feature Is Off

    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 sig- nals such as fish or even structure from the display. Try using resistor spark plugs or routing the sonar unit's power and transducer cables away from other electrical wiring on the boat.

  • Page 102

    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 present, turn the pump off, then turn on the VHF radio and transmit.

  • Page 103: Section 6: Supplemental Material

    Section 6: Supplemental Material FCC Compliance This device complies with Part 15 of the U.S. Federal Communi- cations Commission (FCC) Rules. Operation is subject to the fol- lowing two conditions: (1) this device may not cause harmful in- terference, and (2) this device must accept any interference re- ceived, including interference that may cause undesired opera- tion.

  • Page 104


  • Page 105

    "We," "our," or "us" refers to EAGLE ELECTRONICS, a division of LEI, the manufacturer of this product. "You" or "your" refers to the first person who purchases this product as a consumer item for personal, family, or household use. We warrant this product against defects or malfunctions in materials and workmanship, and against failure to conform to this product's written specifications, all for one (1) year from the date of original purchase by you.

  • Page 106: How To Obtain Service

    8 a.m. to 5 p.m. Central Standard Time, M-F Eagle Electronics may find it necessary to change or end our shipping policies, regulations, and special offers at any time. We reserve the right to do so without notice.

  • Page 107

    To locate an Eagle dealer near you visit our web site or consult your telephone directory for listings. 2) U.S. customers: LEI Extras Inc., PO Box 129, Catoosa, OK 74015-0129 Call 1-800-324-0045 or visit our web site

  • Page 108

    Visit our web site:  Eagle Pub. 988-0143-861 Copyright © 2005 All Rights Reserved Printed in USA 121205 LEI-Eagle...

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