Eagle 320C - Manual

7 Surface water temp: ..... Yes, built into transducer. Optional addi- tional temp sensors for live well, bait well,etc. are available. Speed/distance log: ....... Yes, with optional speed sensor. NOTICE! The storage and operation temperature for your unit is from -4 de-grees to +167 degrees Fahrenh...

8 chart. The sonar's microprocessor calculates the time lapse between thetransmitted signal and echo return to determine the distance to theobject. The whole process repeats itself several times each second. How to use this manual: typographical conventions Many instructions are listed as numbered s...

9 Instructions = Menu Sequences Most functions you perform with the sonar unit are described as a se-quence of key strokes and selecting menu commands. We've writtenthem in a condensed manner for quick and easy reading. For example, instructions for turning on the Fish ID  feature would look like t...

11 Installation & Accessories Preparations You can install the sonar system in some other order if you prefer, butwe recommend this installation sequence: CAUTION: You should read over this entire installation section before drill-ing any holes in your vehicle or vessel! 1. Determine the approxi...

13 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 ofwater, interference caused by bubbles and tur...

14 be displayed on the sonar's screen. Use caution when routing the trans-ducer cable around these wires. Good and poor transducer locations. How low should you go? For most situations, you should install your Skimmer transducer sothat its centerline is level with the bottom of the boat hull. This w...

16 Lack of angle adjustment can be particularly troublesome on hulls thatsit 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 tran...

17 from the side, check to see if it will adjust so that its face is parallel tothe ground. If it does, then the "A" position is correct for your hull. If the transducer's face isn't parallel with the ground, remove thetransducer and ratchets from the bracket. Place the ratchets into thehole...

18 Assemble transducer and bracket. 4. Drilling mounting holes. Hold the transducer and bracket assembly against the transom. The transducer should be roughly parallel to theground. The transducer's centerline should be in line with the bottom ofthe hull. Don't let the bracket extend below the hull!...

19 5. Attaching transducer to transom. Remove the transducer from the bracket and re-assemble it with the cable passing through thebracket over the bolt as shown in the following figures. Route cable over bolt and through bracket. Side view shown at left and seen from above at right. Attach the tran...

21 Attach motor mounting bracket to transducer. 2. Slide the adjustable strap supplied with the TMB-S through the slotin the transducer bracket and wrap it around the trolling motor. Posi-tion the transducer to aim straight down when the motor is in the wa-ter. Tighten the strap securely. 3. Route t...

22 Transducer angles and their effects on fish arches. 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 thearch is printed, then the nose of the transducer is angled too far downand needs to be raised. NOTE: P...

23 Shoot-Thru-Hull Preparation Hulls With Floatation Materials The transducer installation inside a fiberglass hull must be in an areathat does not have air bubbles in the resin or separated fiberglass lay-ers. The sonar signal must pass through solid fiberglass. A successfultransducer installation ...

24 Testing Determines Best Location Ideally, the shoot-thru transducer should be installed as close to thetransom as possible, close to the centerline. This will give you the bestperformance during high speed maneuvers. Shoot-thru-hull transducer locations for high speed or trolling speed operation....

25 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. Next, take the transducer out of the water and place it in the water inthe sump of the boat, face down. (The transducer face is shown in thefigure on the following page....

26 with the boat on plane and observe the bottom signal. You'll need to figuresome way to prop the transducer into position while you make your testrun. (A brick or two might be sufficient to hold it in place.) 5. When you're satisfied with a location, mark it and proceed withthe installation. Shoot...

28 Speed/Temperature Sensors The FishEasy 320C can accept as many as two temperature sensors,which can be used to monitor the temperature of surface water, a live wellor some other location. These units can accept an optional speed sensorfor showing speed and distance traveled. However, you can only...

29 Sonar unit with external combination speed and temperature sensor. Primary temp sensor is built into the transducer. Temperature sensorbuilt into transducer ST-TU combination speed and temperature sensor Sonar unitrear view Power/trans-ducer cable 12-volt battery 3-amp fuse HST-WSU

30 Sonar unit with secondary external temperature sensor. Primary temp sensor is built into the transducer. TS-2Utemperaturesensor Temperature sensorbuilt into transducer Sonar unitrear view 12-volt battery 3-amp fuse Power/trans-ducer cable HST-WSU

31 Sonar unit with external speed sensor. The temperature sensor is built into the transducer. Speed Sensor Installation If you wish to purchase an optional sensor for your unit, refer to theaccessory ordering information inside the back cover of this manual.The following instructions describe how t...

32 water flow to the speed sensor. Make sure the sensor will remain in thewater when the boat is on plane. Also make sure the location doesn't inter-fere with the boat's trailer. Typically, the sensor is mounted about one footto the side of the transom's centerline. Once you've determined the proper...

33 If the base of the transom has a radius, fill the gap between the tran-som and the sensor with the caulking compound. This will help ensurea smooth water flow. 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 t...

34 stalling an inline switch. This will let you shut off power to thepower cable when the unit is not in use. When you are not usingthe unit, you should always shut off power to the power cable, es-pecially when the power cable is disconnected from the unit. Power and transducer connections for the ...

36 Front view (left) and side view (right) showing dimensions of the FishEasy 320C when mounted on quick release bracket. After drilling the hole, pass the connectors up through the hole from under the dash. If you wish, you can fill in the hole around the cablewith a good marine caulking compound. ...

37 FishEasy 320C quick release mounting bracket. Slots in the base allow routing the cable from beneath the mount. Attach the unit to the bracket by first connecting the power/transducerand accessory cables. Then, hold the sonar unit vertically and slide itonto the bracket from above. (The back of t...

38 Mount the sonar: slide the unit onto the bracket from above. Adjust viewing angle: use one hand to press and release the spring- loaded ratchets while you move the unit with the other hand. Portable Sonar Installation Like many Eagle products, the FishEasy 320C sonar is capable of port-able opera...

41 Portable Transducer Assembly Recommended tools for installation include a slotted screw driver andtwo adjustable wrenches. Assemble the transducer and bracket as shown in the following figure.Attach the transducer to the bracket with the supplied hardware. Make sure there is one washer on each si...

42 Moisten the cup, then press it onto the hull as firmly as possible. Tiethe nylon cord to the boat and route the transducer cable to the sonarunit. Your portable sonar is now ready for use. Portable transducer installed on boat transom. NOTE: For optimum operation, the portable transducer should b...

43 Basic Sonar Operation Keyboard Basics The unit sounds a tone when you press any key. This tells you the unithas accepted a command. Numbers in the photo correspond to key ex-planations below: FishEasy 320C Sonar, front view, showing screen and keyboard. 1. MENU/PWR (menu and power) This key appea...

44 the unit's operation. Press MENU once to access the Sonar Menu, or twice to access the Main Menu. NOTE: You must hold the MENU key down for a countdown of five in order to turn the unit off. 2. ENT/PAGES (enter and pages) This key appears in the manual text simply as ENT . When viewing a menu or ...

45 Main Menu The Main Menu contains some basic function commands and some setupoption commands. You access the Main Menu by pressing MENU | MENU . You run a command by using ↑ or ↓ to highlight the command and then pressing ENT . To clear the Main Menu screen and return to the Page dis- play, press ...

47 Sonar Page Menu. Most of these functions are discussed in the Ad- vanced Section. Sonar Menu Commands The Sonar Menu contains commands for the major sonar features andoptions. Most of them are described in detail only in the Advanced Sec-tion, but Sensitivity and Auto Sensitivity are important ba...

48 • Depth Curso r command: displays a cursor line on the sonar chart which allows you to accurately measure the depth of a sonar target. • Overlay Data command: chooses what types of information (such as water temperature) to show overlaid on the sonar chart screen. • Sonar Features command: launch...

49 Sonar Page, showing full sonar chart mode. Sonar chart display options: full sonar chart (left) and split zoom. Surface clutter Structure Bottom signal Fish archesaround schoolof bait fish In FasTrack, fisharches show ashorizontal bars. Depth scale Digital dataoverlay(depth &temperature) Surf...

50 Sonar chart display options: digital data. You can customize how the Sonar Page pictures and other data are dis-played in many ways. We'll discuss all of those features and options inthe Advanced Section, but to show you how easy the sonar unit is to op-erate, the next two pages contain a simplif...

51 Basic Sonar Quick Reference 1. Mount the transducer and unit. Connect the unit to electric powerand the transducer. 2. Launch your boat. 3. To turn on the unit, press and release MENU key. 4. Head for your fishing grounds. Your unit automatically displays digi-tal depth and surface water temperat...

52 8. Gauge the fish depth by visually comparing the fish arches with thedepth scale on the right side of the screen, or get a more accuratemeasure with the Depth Cursor. Press MENU | ↓ to D EPTH C URSOR | ENT . Press ↓ (or ↑ ) to align the cursor line with the fish arch. The exact depth appears in ...

55 Display showing Sensitivity Control Bar. NOTE: If you want to change the sensitivity in Manual Mode, first turn offAuto Sensitivity: from the Sonar Page, press MENU | ↓ to A UTO S ENSITIVITY | ENT | ↑ to S ENSITIVITY | ENT . Press ↓ or ↑ to pick a different sensitivity setting. When it's set at t...

57 This PC application simulates the actual sonar unit on your computer.You can run it from your computer keyboard or use your mouse to pressthe virtual keys. Easy download and installation instructions are avail-able on our web site. Free training emulator is available for your unit on our web site...

58 Advanced 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 conditionsand interference....

59 In the Sonar Features menu, Noise Rejection is selected with ASP in the default low setting. To change the ASP level: 1. From the Sonar Page, press MENU | ↓ to S ONAR F EATURES | ENT . 2. Press ↓ to N OISE R EJECTION | ENT . 3. Press ↓ or ↑ to select a setting, then press ENT . 4. To return to th...

60 The deep alarm works just the opposite. It sounds a warning tone if thebottom depth goes deeper than the alarm's setting. Both depth alarmswork only off the digital bottom depth signals. No other targets will tripthese alarms. These alarms can be used at the same time or individually. At left, Ma...

61 5. To turn off the alarm, press MENU | MENU | ↓ to S ONAR A LARMS | ENT | ↓ to D EEP A LARM E NABLED | ENT | EXIT | EXIT . To switch to a different depth setting, open the Sonar Alarms menu andrepeat the instructions in step 3 above. Fish Alarm Use the fish alarm for a distinctive audible alarm w...

62 Press MENU | MENU | ↓ to B ACKLIGHT L EVEL | ENT . The B ACKLIGHT L EVEL slider bar appears. Press ↑ or ↓ to move the bar. At The lower end of the scale backlighting is turned off; the upper end is maximum backlight level. Backlight Level Command, left, and Backlight Level control bar, right. The...

63 Chart Speed The rate that echoes scroll across the screen is called the chart speed.The default is maximum; we recommend that you leave the speed setthere for virtually all fishing conditions. However, you might consider experimenting with chart speed when youare stationary or drifting very slowl...

64 3. When it's set at the desired level, press EXIT . ColorLine  ColorLine lets you distinguish between strong and weak echoes. It"paints" a brighter color on targets that are stronger than a presetvalue. This allows you to tell the difference between a hard and softbottom. For example, a ...

65 2. The ColorLine Control Bar appears. Press ↓ to decrease ColorLine; press ↑ to increase ColorLine. 3. When it's set at the desired level, press EXIT . At left, little ColorLine indicates a soft bottom, probably sand or mud. At right, the wider ColorLine indicates a harder, rocky bottom. Contrast...

66 Contrast Command, left, and Contrast control bar, right. Depth Cursor The depth cursor consists of a horizontal line with a digital depth box onthe right side. The numbers inside the box show the depth of the cursor. Sonar chart with the depth cursor active. The line indicates the large fish is 4...

67 1. From the Sonar Page, press MENU | ↓ to D EPTH C URSOR | ENT . 2. The depth cursor appears. Press ↓ to lower the cursor line; press ↑ to raise the cursor line. 3. To clear the depth cursor, press EXIT . Depth Range - Automatic When turned on for the first time, the bottom signal is automaticall...

68 To switch to Manual Depth Range: 1. First, turn off automatic depth range. From the Sonar Page, press MENU | ↓ to A UTO D EPTH R ANGE | ENT . 2. Press ↑ to D EPTH R ANGE | ENT and the Depth Range Control Scale appears. 3. Press ↓ or ↑ to select a different depth range. A horizontal blue bar highl...

69 Sonar Page showing FasTrack. Fish I.D.  (Fish Symbols & Depths) The Fish I.D. feature identifies targets that meet certain conditions asfish. The microcomputer analyzes all echoes and eliminates surfaceclutter, thermoclines, and other signals that are undesirable. In mostinstances, remaining...

70 Does that mean Fish I.D. is broken? No — the feature is simply inter-preting sonar returns in a specific way to help take some of the workout of reading the screen. Remember: Fish I.D. is one of the many toolswe provide so you can analyze your sonar returns for maximum fishfinding information. Th...

71 To turn on FishTrack: ( Note: These instructions will turn on FishTrack and Fish I.D. at the same time.) 1. From the Sonar Page, press MENU | ↓ to S ONAR F EATURES | ENT . 2. Press ↓ to F ISH ID D EPTHS | ENT | EXIT | EXIT . To turn off FishTrack, repeat these instructions. Turning off FishTracki...

74 Sonar chart with Overlay Data turned on. This example shows Depth, Water Temperature and the Water Speed of the boat. Ping Speed & HyperScroll  Ping Speed controls the rate at which the transmitter and transducerbroadcast sonar sound waves — pings — into the water. The unit has adefault ping...

75 decrease the sensitivity to a level that eliminates the clutter. When youturn HyperScroll off, you can return to your original sensitivity level. Ping Speed Control Bar at default setting. To change Ping Speed: 1. From the Sonar Page, press MENU | ↓ to P ING S PEED | ENT . 2. The Ping Speed Contr...

76 returns, just as you would on a flasher sonar unit. For more informa-tion on FasTrack, see its entry in this section. Pop-up Help Help is available for virtually all of the menu labels on this unit. Byhighlighting a menu item and leaving it highlighted for a few seconds, a"pop-up" message...

77 3. All the menus are cleared and all options are returned to the factorysettings. At left, Main Menu with Reset Options command selected. On the right, Yes is selected for Reset all the options? Reset Water Distance The sonar chart's Digital Data display option includes a window thatshows distanc...

79 The Sensitivity Control Bar. To adjust sensitivity in manual mode: 1. First, turn off Auto Sensitivity: from the Sonar Page, press MENU | ↓ to A UTO S ENSITIVITY | ENT . 2. Press ↑ to S ENSITIVITY | ENT and the Sensitivity Control Bar appears. Press ↓ or ↑ to pick a different sensitivity setting....

80 Set Keel Offset This unit measures water depth from the face of the transducer. Sincethe transducer is installed below the water surface, the distance dis-played by the digital depth, chart depth scale, chart cursor or fish sym-bols is not the exact water depth. If the transducer is 1 foot below ...

81 1. Press MENU | MENU | ↓ to S ET K EEL O FFSET | ENT . 2. The Keel Offset dialog box appears with a plus (+) sign at the front ofthe box. 3. Press ↑ until the displayed number is + 1.5, then press EXIT . The depth indicators now accurately show the water depth from surface tobottom. Set Language ...

82 At left, Main Menu with Software Information command selected. At right, the Software Information screen. 1. Press MENU | MENU | ↓ to S OFTWARE I NFO | ENT . 2. Read the information displayed on the screen.3. To return to the last page displayed, press EXIT | EXIT . Sonar Chart Mode The default c...

83 Full Sonar Chart This is the default mode used when the unit is turned on for the firsttime or when it's reset to the factory defaults. The bottom signal scrolls across the screen from right to left. Depthscales on the right side of the screen aid in determining the depth oftargets. The line at t...

85 Sonar Simulator This unit has a built-in simulator that lets you run it as if you were onthe water. All sonar features and functions are useable. When insimulator mode, you will occasionally see the word Simulated in the Sonar Page at the bottom of the screen. To use the simulator: 1. From the So...

86 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 arecalled "surface clutter." These markings are caused by wave action,boat wakes, te...

87 Sonar Features menu with Surface Clarity selected. 2. Press ↓ or ↑ to select clarity level | EXIT | EXIT | EXIT . 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...

88 may fade until it is unreadable. A low transparency will usually makemenu text easier to read, at the cost of watching your sonar returns. 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 Trans...

89 Main Menu, left, Units of Measure Menu, right. To set Units of Measure: Press ↓ to the desired units, then press ENT. After all the options are set as desired, press EXIT | EXIT to return to the page display. Volume This command adjusts the speaker volume, which controls the soundlevels for keyst...

90 For example, turning on the 2X zoom will show all echoes that are be-tween the top and bottom of the 2X zoom bar. The 4X zoom will showonly the echoes between the top and bottom of the 4X zoom bar. At left, Sonar Page, normal view. Center, same view zoomed to 2X. Right, same view zoomed to 4X To ...

91 Illustration at left shows Zoom Bar and 2X zoom level, at right, 4X. Tip: From the Sonar Menu, you can go directly to the Zoom Level com-mand with one keystroke. Instead of pressing the down arrow ( ↓ ) to reach the command, press the up arrow ( ↑ ) instead. This will take you from "Sensitivi...

93 Troubleshooting If your unit is not working, or if you need technical help, please use thefollowing troubleshooting section before contacting the factory customerservice department. It may save you the trouble of returning your unitfor repair. For contact information, refer to the last page, just...

94 Weak bottom echo, digital readings erratic, or no fish signals: 1. Make sure the transducer is pointing straight down. Clean the face ofthe transducer. Oil, dirt and fuel can cause a film to form on the trans-ducer, reducing its effectiveness. If the transducer is mounted insidethe hull, be sure ...

95 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 cablesaway 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. T...

97 Index A Accessories, 5, 11, 35, 36Alarms, 45, 59, 60, 61 Depth Alarms, 59Fish Alarm, 59, 61 Antenna, 96ASP  (Advanced Signal Processing), 24, 58 B Backlights / Lighting, 6, 45, 61, 62, 77Batteries, 11, 33, 34, 39, 40, 44, 93, 94, 96 C Calibrate Speed, 62Chart Speed, 47, 63Contrast, 45, 65, 66, 7...

100 How to Obtain Service… …in the USA: We back your investment in quality products with quick, expert serviceand genuine Eagle replacement parts. If you're in the United Statesand you have technical, return or repair questions, please contact theFactory Customer Service Department. Before any produ...

Accessory Ordering Informationfor all countries To order Eagle accessories such as power cables or transducers,please contact: 1) Your local marine dealer or consumer electronics store. Most quality dealers that handle marine electronic equipment or other consumer electronics shouldbe able to assist...

Visit our web site: www.eaglesonar.com Eagle Pub. 988-0143-781 Copyright © 2004 All Rights Reserved Printed in USA 092304 LEI-Eagle 