Eagle FISHMARK 640C Spécifications

Pub. 988-0143-861 www.eaglesonar.comFish-Finding & Depth-Sounding SonarsInstallation and OperationInstructions

4Surface water temp: ... Yes.Speed/distance log: ... Optional (requires optional speed sensor).NOTICE!The storage temperature range for your uni

94Weak bottom echo, digital readings erratic, or no fish signals:1. Make sure the transducer is pointing straight down. Clean the faceof the transduce

952. Electrical noise from the boat's motor can interfere with the sonar.This causes the sonar to automatically increase its Discrimination ornoi

96signal on the display. Now turn on each piece of electrical equipment onthe boat and view the effect on the sonar's display. For example, turno

97Section 6: Supplemental MaterialFCC ComplianceThis device complies with Part 15 of the U.S. Federal Communi-cations Commission (FCC) Rules. Operatio

98Notes

99EAGLE ELECTRONICSFULL ONE-YEAR WARRANTY"We," "our," or "us" refers to EAGLE ELECTRONICS, a division of LEI, the manufa

100How to Obtain Service……in the USA:We back your investment in quality products with quick, expert serviceand genuine Eagle replacement parts. If you

Accessory Ordering Informationfor all countriesTo order Eagle accessories such as power cables or transducers, please contact:1) Your local marine dea

Visit our web site:www.eaglesonar.comEagle Pub. 988-0143-861 Copyright © 2005 All Rights ReservedPrinted in USA 121205 LE

5How to Use this Manual: Typographical ConventionsMany instructions are listed as numbered steps. The keypad and arrow"keystrokes" appear as

6For example, instructions for turning on the Fish ID feature wouldlook like this:1. From the Sonar Page, press MENU|↓ to SONAR FEATURES|ENT.2. Press

7Section 2: Installation & AccessoriesPreparationsYou can install the sonar system in some other order if you prefer, butwe recommend this install

8adjustable strap. These are "kick-up" mounting brackets. They helpprevent damage if the transducer strikes an object while the boat ismovin

9grit sandpaper, specially formulated epoxy adhesive available from LEI(see ordering information on the inside portion of the back cover). Asandwich h

105. If possible, route the transducer cable away from other wiring on theboat. Electrical noise from engine wiring, bilge pumps and aerators canbe di

11However, there are times when you may need to adjust the transducerslightly higher or lower. The slots in the mounting brackets allow youto loosen t

12Lack of angle adjustment can be particularly troublesome on hulls thatsit with the bow high when at rest or at slow trolling speeds.Third, a transdu

13Align plastic ratchets in bracket.B. Two-piece bracket: Locate the four plastic ratchets in the trans-ducer's hardware package. Press two ratc

Copyright © 2005 LEI-EagleAll rights reserved.Eagle®, FishMark® and SeaFinder® are registered trademarks of LEINo part of this manual may be copied, r

14Add ratchets to bracket and transducer.2. Aligning the transducer on the transom.A. One-piece bracket: Slide the transducer between the two ratch-et

15Insert bolt and check transducer position on transom.B. Two-piece bracket: Assemble the transducer and bracket asshown in the following figure. Temp

16Assemble transducer and bracket.3. Assembling the transducer.A. One-piece bracket: Once you determine the correct position for theratchets, assemble

17Mark the center of each slot for the mounting screw pilot holes. Youwill drill one hole in the center of each slot.Drill the holes. For the one-piec

18tighten the lock nut! If you do, the transducer won't "kick-up" if itstrikes an object in the water. Align transducer centerline

19Caution: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 thehole

20Transducer mounted on trolling motor, side view.Transducer Orientation and Fish ArchesIf you do not get good fish arches on your display, it could b

21If 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 thearch

22For 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-m

23harder (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.Examp

iTable of ContentsRead Me First!...1Capabilities and Specifications: F

244. Most people can get good results by following steps 1 through 3, so thisstep is optional. If you want to make an extra effort to be absolutely su

25Epoxy transducer to hull.WARNING:Use only the epoxy available from LEI. It has been for-mulated to work with these installation procedures.Other ep

263. Press the transducer into the epoxy, twisting and turning it to forceany air bubbles out from under the transducer face. Stop pressing whenyou bo

27Sonar unit with external temp sensor, external speed sensor, or combospeed/temp sensor. The primary temperature sensor is builtinto the transducer.O

28Recommended tools for this job include: drill, 5/8" drill bit, 1/8" drill bit forpilot holes, screwdriver. Required supplies for this job

29 Speed sensor mounting configuration:side view (left) and rear view (right.)Route the sensor's cable through or over the transom to the sonar

30Caution:When using the unit in a saltwater environment, we strongly rec-ommend that you shut off the power supply to the power cable whenthe unit is

31Power connections for the sonar unit.WARNING:Do not use this product without a 3-amp fuse wired intothe power cable! Failure to use a 3-amp fuse wil

32Bracket InstallationMount the unit in any convenient location, provided there is clearancebehind the unit when it's tilted for the best viewing

33sure to leave enough slack in the cables to allow tilting or swiveling theunit. If you choose to fill in the hole, be sure to position the cablesaga

iiMain Menu ...39Pages ...

34In-Dash InstallationYou can mount the unit in the dash with an optional FM-5 In-DashAdapter Kit. The kit includes mounting hardware, a template for

35The portable power pack can be used with eight "D" cell alkaline bat-teries or an optional sealed, rechargeable battery. For set-up direct

36Notes

37Basic Sonar OperationThis section addresses the unit's most basic sonar operations. The in-structions presented in Sec. 3 follow a chronologic

381. PWR/LIGHT (Power & Light) – The PWR key turns the unit on andoff and controls the backlight level.2. PAGES – Pressing this and the ↑ and ↓ ar

39Turn off the unit by pressing and holding the PWR key for 3 seconds.Main MenuThe unit has a Main Menu which contains both function and setup op-tion

40The Main Menu commands and their functions:Screen command changes the contrast, brightness or display mode.Sounds command enables or disables the so

41Pages Menu showing Sonar display options.All of the display options show the sonar chart in some format. This is a"cross-section" view of

42Sonar page in Split Zoom Sonar Chart display mode.Sonar page in Digital Data display mode.

43Sonar 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

iiiTo turn off HyperScroll...74Pop-up Help...

44Sonar Page showing full sonar chart mode.Surface clutterBottom signalFish archesIn FasTrack, fisharches show ashorizontal bars.Depth scaleDigital da

45Basic Sonar Quick Reference1. Mount the transducer and unit. Connect the unit to electric powerand the transducer.2. Launch your boat.3. To turn the

46depth appears in a box at the right end of the cursor line. To clear thecursor, press EXIT.9. If you are drifting at a very low speed or anchored, y

47 These figures show results of different sensitivity levels on the same lo-cation. Fig. 1: Sensitivity at 88 percent, deter

48Adjusting sensitivity in Auto Sensitivity Mode is similar to manuallyadjusting a car's speed with the accelerator pedal while cruise control is

49 Sonar Menu (left) with Sensitivity command selected. The SensitivityControl Bar is shown at right.NOTE:If you want to change the sensitiv

50Fish Symbols vs. Full Sonar ChartYou may have noticed in the quick reference we used fish arches in fullsonar chart mode for our example instead of

51For the ultimate training aid download the free emulator software foryour unit. Aside from being just plain fun, this program can help youlearn both

52Notes

53Section 4: Sonar Options & Other FeaturesMaterial in this section is arranged in alphabetical order.ASP (Advanced Signal Processing)The ASP fe

ivNotes

54 Sonar Menu (left) with Sonar Features selected. In the SonarFeatures menu (center) the SeaFinder's Noise Rejection feature is se-lected with

55Depth AlarmsThe depth alarms sound a tone when the bottom signal goes shallowerthan the shallow alarm's setting or deeper than the deep alarm&a

563. Press ← to Shallow Alarm ENABLED|ENT|EXIT.4. To turn the alarm off press ALARM|ENT|EXIT.To switch to a different depth setting, open the Sonar A

57 Sonar Alarms menu (left) with Adjust Zone command selected.Adjust Zone Alarm selection box (right) with Upper Limit selected.4. Press EXIT|←

58Sonar Alarms menu with Fish Alarm selected. The check box to the leftis blank, indicating the alarm is turned off.To turn the Fish Alarm on:1. Press

59 The unit's backlight level can be controlled from the Screen menu.Calibrate SpeedThe speed sensor can be calibrated to compensate for i

60Chart SpeedThe rate that echoes scroll across the screen is called the chart speed.The default is maximum. We recommend you leave the speed set at

611. From the Sonar Page, press MENU|↓ to CHART SPEED|ENT.2. The Chart Speed Control Bar appears. Press ↓ to decrease chartspeed or press ↑ to increas

62 Sonar Page menu (left) with ColorLine command selected.The ColorLine control bar is shown at right. Little ColorLine (left) indicates

63 Sonar Page menu (left) with Depth Cursor command selected. Sonarchart (right) with the depth cursor active. The school of fish is 31.91feet d

1Section 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 anxio

64 Sonar Page menu (left) with Depth Range command selected. TheDepth Range control scale is shown at right.2. The Depth Range control scale appe

65NOTE:The sonar's depth capability depends on the transducer installa-tion, water and bottom conditions and other factors.FasTrackThis feature

66There are several fish symbol sizes. These are used to designate therelative size between targets. In other words, Fish I.D. displays a smallfish sy

67To turn the Fish I.D. feature on:1. From the Sonar Page, press MENU|↓ to SONAR FEATURES|ENT.2. Press → to FISH SYMBOLS|ENT|EXIT|EXIT.To turn off Fis

68Frequency (Change Transducer Frequency)(SeaFinder unit only)The SeaFinder transducer operates with both 200 kHz and 50 kHz. The200 kHz frequency has

69To change the frequency setting to 50 kHz:1. From the Sonar Page, press MENU|↓ to SONAR FEATURES|ENT.2. Press ↓ then → to Transducer Freq.|50 KHZ|EN

70 Overlay Data command (left) on the Sonar Menu. Overlay Data Shownselection menu at right. In this example, Depth will be displayed in alarge f

713. To return to the previous page, press EXIT.To turn off displayed data:1. Press MENU|↓ to OVERLAY DATA|ENT.2. Press ↓ or ↑ to select Data Type|ENT

72Sonar 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

73When using HyperScroll, you may also need to manually decrease thesensitivity for optimum performance. Depending on water depth andother conditions,

2any longer, turn to the Quick Reference on page 45 and headfor the water with your sonar unit!)After you have gained some experience with your sonar,

742. The Sensitivity Control Bar appears. Press ↓ to decrease sensitivity;press ↑ to increase sensitivity. When it's set at the desired level, pr

75Example showing the Pop-up Help message for the Sensitivity com-mand located on the Sonar Menu.Reset OptionsThis command is used to reset all featur

76 Main Menu (left) with Reset Options command selected. The Reset Op-tions dialog box (right) with "Yes" selected.Reset Water Distan

77grounding or striking underwater structure. The Keel Offset featureeliminates the need for the navigator to mentally calculate how muchwater is unde

784. Press → to the second number, them press ↑ to change the num-ber to 5, then press EXIT. The depth indicators now accurately showthe water depth f

79level in manual mode the unit will continue to use that exact sensitivitysetting until you change it or revert to auto mode.To adjust sensitivity in

80NOTE:To return to the original factory setting for Auto Sensitivity, see theentry in this section on Reset Options. If sensitivity is in manualmode,

81To change the chart mode color scheme:1. From the Sonar Page, press MENU|↓ to SONAR FEATURES|ENT.2. Press → to SONAR CHART MODE|ENT.3. Press ↓ or ↑

82The FasTrack™ display shows just to the right of the scale. Thischanges all echoes into short horizontal bars, replicating a flasher so-nar. The zoo

83 Split Zoom Sonar Chart. The left image shows the left split screenwindow zoomed to 2X. The right image shows the left split screen win-dow z

3Back-up memory: ... Built-in memory stores sonar settings fordecades.Languages:... 10; menu languages selectable by user.So

84Digital Data/ChartCustomizing the Digital Data/Chart ScreenThe Digital Data/Chart screen can be customized to show digital datadifferent from the de

852. The Water Speed box title bar flashes, indicating the box contentscan be changed. Press ENT|↑ or ↓ to select data type|ENT|EXIT.Water Speed has b

86Main 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

87Sonar Menu with Stop Chart command selected. The box is unchecked,indicating that the chart is scrolling across the screen.Surface ClarityThe markin

88 Sonar Features menu with Surface Clarity selected (at left, dual-frequency menu; at right, single-frequency menu).2. Press ↓ to select Surface

89Experiment with this feature until you find the right level of transpar-ency for your eyes.Main Menu with Transparency command selected.To adjust Me

90The 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 EXIT

91Pressing ZIN once doubles the size (2X) of all echoes on the screen.Pressing it again quadruples the size of the echoes (4X). Press the ZoomOut key

92Notes

93Section 5: TroubleshootingIf your unit is not working, or if you need technical help, please use thefollowing troubleshooting section before contact