Strata 128 Strata 128 Plus Strata 128 Por table Portable StrataView StrataView
INSTALLA ALLATION OPERATION INSTALLATION AND OPERATION INSTRUCTIONS INSTRUCTIONS

TABLE OF CONTENTS

INTRODUCTION.... 3 SPECIFICATIONS... 3 INSTALLATION -Transducer... 5 POWER CONNECTIONS... 13 BRACKET INSTALLATION... 14 PORTABLE ASSEMBLY... 15 SPEED/TEMP SENSORS... 16 KEYBOARD BASICS... 20 DISPLAY.... 20 OPERATION.... 21 MENUS.... 21 AUTOMATIC.... 21 RANGE.... 21 ZOOM.... 22 SENSITIVITY... 24 GRAYLINE.... 24 FISH ID.... 25 FISH TRACK.... 26 TARGET TRACK.... 26 CHART SPEED.... 27 DISPLAY MODE... 28 ALARMS.... 32 BACK LIGHT.... 33 FEET/METER.... 33 DISPLAY CONTRAST... 33 ASP (Advanced Signal Processing)... 34 SIMULATOR.... 34 TROUBLESHOOTING... 35 WARRANTY.... 38
Copyright 1998, Eagle Electronics All features and specifications in this manual are subject to change without notice. All screens in this manual are simulated. Eagle Electronics PO Box 669 Catoosa, OK 74015
INTRODUCTION Thank you for purchasing an Eagle sonar. Your sonar unit is a high quality sonar designed for both professional and novice fishermen. All of our sonars have an automatic feature that finds and displays the bottom, fish, structure, and more! All you have to do is press the on key. However, if you wish to fine tune the unit, all you have to do is press the menu key. The Strata series has powerful features available through easy-to-use menus. To get started with your Eagle unit, first read the installation section. This is where it all begins. Improper installation can cause problems down the road. After youve read the instructions, install the unit, then read the rest of the manual. The more you know about your unit, the better it will perform for you. Take this manual for reference when you head for the water.
SPECIFICATIONS Dimensions.. Input Voltage.. Current Drain.. Transmitter Frequency.. Output Power. Display...
5.9" W x 5.35" H x 3.4" D 10 - 15 vDC 350 ma (lights off) 500 ma (lights on) 192 kHz 275 watts (peak-to-peak) (typical) 34.4 watts (RMS) 128 pixels (H) x 65 pixels (W) Supertwist Liquid Crystal Display

5.9"

3.4"
NOTICE! The storage temperature for your unit is from -4 degrees to +167 degrees Fahrenheit (-20 degrees to +75 degrees Celcius). Extended 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 customer service department or your local service center.

5.35"

Transducer Installation
The transducer included with your sonar is a transom mount transducer The kick-up mounting bracket helps prevent damage if the transducer strikes an object while the boat is moving. If the transducer does kickup, the bracket can easily be pushed back in place without tools. Read this manual carefully before attempting the installation. Determine which of the mounting positions is right for your boat. Use extreme care if mounting the transducer inside the hull, since once it is epoxied into position, the transducer usually cannot be removed. Remember, the transducer location is the most critical part of a sonar installation.

Location - General

1. The transducer must be placed in a location that has a smooth flow of water at all times. If the transducer is to be mounted inside the hull, then the chosen location must be in the water at all times. If the transducer is not placed in a smooth flow of water, interference will show on the sonars display in the form of random lines or dots whenever the boat is moving. 2. The transducer should be installed with its face pointing straight down, if possible. 3. If the transducer is mounted on the transom, make certain it doesnt interfere with the trailer or hauling of the boat. Also, dont mount it closer than approximately one foot from the engines lower unit. This will prevent cavitation interference with the propeller. Typically, the transducer should be mounted as deep in the water as possible. This increases the chance that it will be in the water in high speed and reduces the possiblity of air bubble interference. 4. If possible, route the transducer cable away from other wiring on the boat. Electrical noise from engine wiring, bilge pumps, and areators can be displayed on the sonars screen. Use caution when routing the transducer cable around these wires.

Shoot-thru-hull v.s. Transom Mounting
(Strata 128 and Strata 128 Plus Only) Typically, shoot-thru-hull installations give excellent high speed operation and good to excellent depth capability. There is no possibility of damage from floating objects. It can't be knocked off when docking or loading on the trailer. However, the shoot-thru-hull installation does have its drawbacks. One, some loss of sensitivity does occur, even on the best hulls. This varies from hull to hull, even from different installations on the same hull. This is caused by differences in hull layup and construction. Two, the angle of the transducer cannot be adjusted for the best fish arches. This can be a problem on some hulls that sit with the bow high when at rest or at slow trolling speeds. Follow the procedure listed in the shoot-thru-hull installation section in this manual to determine if you can satisfactorily shoot through the hull.
Transducer Assembly and Mounting - All Units The best way to install this transducer is to loosely assemble all of the parts first, place the transducers bracket against the transom and see if you can move the transducer so that its parallel with the ground. 1. Press the two small plastic ratchets into the sides of the metal bracket as shown below. Notice there are letters molded into each ratchet. Place each ratchet into the bracket with the letter A aligned with the dot stamped into the metal bracket. This position sets the transducers coarse angle adjustment for a fourteen (14) degree transom. Most outboard and stern-drive transoms have a fourteen degree angle.
2. Slide the transducer between the two ratchets. Temporally 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 transducers face isnt parallel with the ground, remove the transducer and ratchets from the bracket. Place the ratchets into the holes in the bracket with the letter B aligned with the dot stamped in the bracket. Reassemble the transducer and bracket and place them against the transom. Again, check to see if you can move the transducer so its parallel with the ground. If you can, then go to step 3. If it doesnt, repeat step 2, but use a different letter until you can place the transducer on the transom correctly.

RATCHETS

3. Once you determine the correct position for the ratchets, assemble the transducer as shown at left. Don't tighten the lock nut at this time.

NUT METAL WASHER

RUBBER WASHERS BOLT

METAL WASHER

CAUTION! CLAMP THE TRANSDUCER 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

POOR ANGLE

4. Hold the transducer and bracket assembly against the transom. The transducer should be roughly parallel to the ground. The bottom of the transducer bracket should be in line with the bottom of the hull. Don't let the bracket extend below the hull! Mark the center of the slots for the mounting holes. Drill two 5/32" holes in the marked locations for the #10 screws supplied with the transducer.

TRANSOM

SIDE VIEW
5. Remove the transducer from the bracket and re-assemble it with the cable passing through the bracket over the bolt as shown above. Attach the transducer to the transom. Slide the transducer up or down until its aligned properly on the transom as shown above. Tighten the brackets mounting screws. Adjust the transducer so that its parallel to the ground and tighten the lock nut until it touches the flat washer, then add 1/4 turn. Dont over tighten the lock nut! If you do, the transducer wont kick-up if it strikes an object in the water. 6. Route the transducer cable to the sonar unit. Make certain to leave some slack inthe cable at the transducer as shown above. If possible, route the transducer cable away from other wiring on the boat. Electrical noise from the engines wiring, bilge pumps, VHF radio wires and cables, and aerators can be picked up by the sonar. Use caution when routing the transducer cable around these wires. IMPORTANT! Clamp the transducer cable to the transom close to the transducer. This can prevent the transducer from entering the boat if it is knocked off at high speed. 7. Make a test run to determine the results. If the bottom is lost at high speed, or if noise appears on the display, try sliding the transducer bracket down. This puts the transducer deeper into the water, hopefully below the turbulence causing the noise. Don't allow the transducer bracket to go below the bottom of the hull!

TROLLING MOTOR BRACKET INSTALLATION (StrataView Only) 1. Attach the TMB-S bracket to the transducer as shown below using the hardware supplied with the transducer. (Note: The internal tooth washer is supplied with the TMB-S.)

TMB-S BRACKET

INTERNAL TOOTH WASHER BOLT NUT

FLAT WASHER

2. Slide the adjustable strap supplied with the TMB-S through the slot in the transducer bracket and wrap it around the trolling motor. Position the transducer to aim straight down when the motor is in the water. Tighten the strap securely. Route the transducer cable alongside the trolling motor shaft. Use plastic ties (not included) to attach the transducer cable to the trolling motor shaft. Make certain there is enough slack in the cable for the motor to turn freely. Route the cable to the sonar unit and the transducer is ready for use.

SHOOT-THRU-HULL

(Strata 128 and Strata 128 Plus Only) The transducer installation inside a fiberglass hull must be in an area that does not have air bubbles in the resin or separated fiberglass layers. The sonar signal must pass through solid fiberglass. A successful transducer installation can be made on hulls with flotation materials (such as plywood, balsa wood, or foam) between layers of fiberglass if the material is removed from the chosen area. For example, some manufacturers use a layer of fiberglass, then a core of balsa wood, finishing with an outer layer of fiberglass. Removing 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. After the epoxy cures, the hull is watertight and structurally sound. Remember, the sonar signal must pass through solid fiberglass. Any air bubbles in the fiberglass or the epoxy will reduce or eliminate the sonar signals. To choose the proper location for thru-hull mounting, anchor the boat in 60 feet of water. Add a little water to the sump of the boat. Plug the
FILL WITH EPOXY INNER HULL

EPOXY TO HULL FIRST

OUTER HULL

SPEED/TEMPERATURE SENSORS The Strata Plus and StrataView can use up to three temperature sensors which can monitor surface water, live well, air, and virtually any other temperature. You do need to be careful when purchasing the temperature sensors, however. Each temperature sensor has its own "address". The sensors are labeled "Water", "T-2" (or Temp-2), and "T-3" (or Temp-3). If you want two (or more) temperature readings, you'll need to use the proper sensors. For example, you can't use two T-3 sensors. The sensors that will fit these units are: TS-1BK TS-2BK TS-3BK TS-12BK ST-TBK One sensor for "Water" temperature display. One sensor for "T-2" temperature display. One sensor for "T-3" temperature display. Two sensors for "Water" and "T-2" temperature displays. One speed sensor and one temperature sensor for "Speed" and "Water" displays. (comes with Strata Plus)
You can combine these sensors in many combinations. See the list on the following page for temperature and speed sensor combinations.

Sensor Chart

(Note: Do not use these sensors in any other combination.) ST-TBK = 1 speed sensor and 1 temperature display ST-T BK + TS-2BK = 2 temp sensors and one speed sensor ST-TBK + TS-2BK + TS-3BK = 3 temp sensors and one speed sensor TS-1BK = 1 temperature sensor TS-12BK = 2 temperature sensors or TS-1BK + TS-2BK = 2 temperature sensors TS-12BK + TS-3BK = 3 temperature sensors or TS-1BK + TS-2BK +TS-3BK = 3 temperature sensors
Here's some sample wiring diagrams:

TS-12 BK

Two Temperature Sensors (Water and T-2)
STRATA PLUS'S OR STRATAVIEW'S POWER CABLE 18
(Note: Do not use these sensors in any other combination.)

TS-3 BK

Three Temperature Sensors (Water, T-2, and T-3)
STRATA PLUS OR STRATAVIEW POWER CABLE ST-TBK

TS-2 BK

Three Temperature Sensors plus Speed (Water, T-2, T-3, and Speed)
STRATA PLUS OR STRATAVIEW POWER CABLE 19
KEYBOARD BASICS The unit sounds a tone when you press any key. This tells you the unit has accepted a command. PWR/CLEAR Use this key to turn the unit on. It also clears menu selections and the menus from the screen. This key also turns the unit off. NOTE: You must hold the OFF key down for a few seconds in order to turn the unit OFF. MENU FWD / MENU REV These sonar units have many features that are accessed with the menu keys. The MENU FWD key moves forward through the menus, the MENU REV key moves backward. To see the first menu, simply press either MENU key. To see the other menus, press a MENU key repeatedly. UP and DOWN ARROWS Use these keys to adjust virtually every feature and function on the unit. NOTE: The up arrow key also stops the chart when no menus are displayed. In other words, anytime you wish to stop the chart, first make certain no menu is on the screen. Now press the up arrow key. The chart freezes and the word STOP appears at the top of the screen. To start the chart, press the up arrow key again or the PWR/CLEAR key. DISPLAY - General The lights flash for about ten seconds when the unit is turned on. Two menus appear, one after the other. The menus are the lights (BACK LIGHT) and a feet-meter selection (FEET/METER). To turn the lights on, press the up arrow key. To switch from feet to meters, press the down arrow key when the proper menu appears. The menus disappear after a few seconds. If you dont want to wait, press the PWR key to clear the menus from the screen. When the sonar unit is first turned on, the display appears similar to the one at right. The unit is in the automatic mode and the Fish ID feature is on. The depth range shows on the left side of the screen. On the screen at right, the range is from 0 to 60 feet and the bottom depth is 48.6 feet.

OPERATION MENUS This unit uses menus to guide you through the units functions and features. The menu key accesses these features, allowing you to customize the unit to your particular needs and water conditions. All you have to do to leave one menu and enter another is press the menu key repeatedly. If you ever get lost in the menus, simply press the PWR key. This clears the menus from the screen. Menus change depending on the mode the unit is in. For example, if the automatic mode is turned off, the sensitivity menu changes from AUTO SENS to MAN SENS. Other messages may appear in menu boxes or new menus can appear, again depending on previous selections. AUTOMATIC When the unit is first turned on, the automatic feature is enabled. This feature automatically adjusts the units range and sensitivity according to water conditions. It always keeps the bottom displayed in the lower portion of the screen. To turn the automatic feature off, press the menu key until the AUTO/MAN menu appears. Now press the down arrow key. This highlights the letters MAN. The unit is now in the manual mode. Wait a few seconds and the menu will scroll off the screens left side. Pressing the PWR key also clears it. To turn the automatic feature on again, repeat the above steps, except this time press the up arrow key. RANGE You cant adjust the range when the unit is in the automatic mode. It is adjustable when the unit is in the manual mode, however. To do so, first put the unit in the manual mode. Now press the PWR key to clear the screen. Then press the menu key until the RANGE SEL menu appears as shown at the top of the next page. The current range shows at the bottom of the menu. In this case, the range is 60 feet. Now press the up arrow key to decrease the range, the down arrow key increases the range.
After you select the desired range, press the PWR key to clear the display. If you wait a few seconds, it will automatically clear. This unit has the following ranges: 10, 20, 40, 60, 120, 240, 480, and 900 feet. and 5, 10, 20, 40, 60, 100, 200, and 300 meters.
ZOOM The zoom feature enlarges all echoes on the screen. If the unit is in the automatic mode, it tracks the bottom signal, always keeping it near the bottom of the screen. This lets you see small detail, at the same time enlarging all echoes that appear on the screen. The unit doesnt track the bottom in the manual mode, and the adjustments are slightly different. Zoom - Automatic Operation To zoom the display, first press the MENU key until the RANGE/ZOOM menu appears as shown at right. Now press the down arrow key. This switches the unit into the zoom mode. A new menu immediately appears as shown below. This is the zoom size menu. Zoom size is the distance between the upper limit and the lower limit. The upper limit shows at the top left corner of the screen. The lower limit is in the bottom left corner. For example, if the upper limit is 40 feet and the lower limit is 70 feet, the zoom window size is 30 feet. The word TRACK appears in this menu when you first activate the zoom as shown at right.

GRAYLINE Grayline lets you distinguish between strong and weak echoes. It paints gray on targets that are stronger than a preset level. This shows the difference between a hard or soft bottom, large fish versus smaller ones, or rocks and brush on the bottom. For example, a soft, muddy, or weedy bottom returns a weaker signal which shows a narrow or no gray line. A hard bottom returns a strong signal that causes a wide gray line. If you have two targets of equal size, one with gray and the other without, the target with gray is the stronger echo. This helps distinguish fish from structure, or the larger fish from a smaller one.
Grayline is adjustable. Since it shows the difference between strong and weak echoes, changing the level may require a different sensitivity setting. To change the Grayline level, first press the MENU key until the Grayline menu appears. Now press the up arrow key to increase the level, the down arrow to decrease it. The percentage of Grayline now in use shows in this menu. Echoes scrolling onto the screen will also show the effects of the Grayline change. If you reach the maximum or minimum level, a tone sounds alerting you to the limits. The level chosen by the unit when its first turned on is usually adequate for most conditions. Experiment with your unit to find the Grayline setting thats best. FISH ID FEATURE The Fish ID feature identifies targets that meet certain conditions as fish. The microcomputer analyses all echoes and eliminates surface clutter, thermoclines, and other undesirable signals. In most instances, remaining targets are fish. The Fish ID feature displays symbols on the screen in place of the actual fish echoes. There are three symbol sizes: small, medium, and large. These show the relative size between targets. In other words, it displays a small fish symbol when it thinks a target is a small fish, a medium fish symbol on a larger target, etc. The microcomputer is sophisticated, but it can be fooled. It can't distinguish between fish and other suspended objects such as turtles, submerged floats, air bubbles, etc. Individual tree limbs extending outwards from a group of limbs are the hardest objects for the Fish ID feature to distinguish from fish. You may see Fish ID symbols on the screen when, in fact, there are no fish. Practice with the unit when the Fish ID feature is on and off to become more familiar with Fish ID. When the unit is first turned on, the Fish ID feature is automatically turned on, also. To turn it off, press the menu key until the Fish ID features menu appears as shown at right, then press the down arrow key. To turn it back on, repeat the above steps, but press the up arrow key instead.

CHT 2 (Chart #2) This is the High Speed Scroll mode. It shifts the chart speed into high gear, scrolling echoes at a high rate. It has the following features: 1. Automatic Off 2. Fish ID Feature Off 3. Digital Depth Display Off
DIG 1 (Digital #1) This is the digital only screen. It shows the digital depth display at the top of the screen in very large numbers. The shallow and deep alarm settings are displayed beneath the digital depth. No chart shows on this screen.
STRATA 128 PLUS and STRATAVIEW ONLY CHT 1 (Chart #1) This is the default mode used when the unit is first turned on. It has the following features: 1. Automatic On 2. Fish ID Feature On 3. Digital Depth Display On
CHT 2 (Chart #2) Same as Chart-1, but with water temperature added.
CHT 3 (Chart #3) Same as Chart-1, but with speed added.
STRATA 128 PLUS and STRATAVIEW ONLY (cont.) CHT 4 (Chart #4) Same as Chart-1, but with water temperature and speed added.
CHT 5 (Chart #5) This is the High Speed Scroll mode. It shifts the chart speed into high gear, scrolling echoes at a high rate. It has the following features: 1. Automatic Off 2. Fish ID Feature Off 3. Digital Depth Display Off
DIG 1 (Digital #3) This is the digital only screen. It shows the digital depth display at the top of the screen in very large numbers. The shallow and deep alarm settings are displayed beneath the digital depth. No chart shows on this screen.
STRATA 128 PLUS and STRATAVIEW ONLY (cont.) DIG 2 (Digital #2) Digital depth, water temperature, speed, and distance log (odometer) show on this page. To reset the log, turn the unit off and back on again.
DIG 3 (Digital #3) Digital depth, water temperature, T-2 temperature, and T-3 temperature all show on this screen.
Temperature Probe Select You can select the temperature probe's output that shows on Chart 2 and 4, when more than one temperature probe is connected to a Strata 128 Plus or a StrataView. To do this, press a MENU key until the "TEMP PROBE" menu appears as shown at right. Now press the up or down arrow keys until the desired probe appears. Press the PWR key to erase the menu.
ALARMS FISH ALARM The Fish Alarm sounds a tone when a fish symbol appears on the screen. To use the fish alarm, press the menu key until the FISH ALARM menu appears on the screen. Now press the up arrow key to turn the alarm on. Repeat the above steps to turn the fish alarm off.

DEPTH ALARMS The depth alarms are triggered only by the bottom signal. No other echoes will activate these alarms. The depth alarms consist of a shallow and deep alarm. The shallow alarm sounds an alarm tone when the bottom goes shallower than the alarms setting. The deep alarm sounds a tone when the bottom goes deeper than its setting. Both alarms adjust the same, although through different menus. Shallow Alarm To set the shallow alarm, press the menu key repeatedly until the SHAL ALARM menu appears. Press the down arrow key to increase the shallow alarm's depth setting, the up arrow key decreases it. The number in the shallow alarms menu box shows the current shallow alarm setting. When the number reaches the desired setting, release the arrow key. When the bottom depth goes shallower than the alarms setting an alarm tone sounds. At the same time the alarm sounds, a message box appears on the screen as shown at right. Press the up arrow key to silence the alarm. This will turn the alarm sound off until the shallow alarm is triggered again. To turn the alarm off, press the menu key until the shallow alarm menu appears. Then press the up arrow key until the word OFF appears.
Deep Alarm The deep alarm adjusts the same as the shallow alarm. Use the DEEP ALARM menu to adjust the deep alarm. When the bottom signal goes deeper than the setting, an alarm tone sounds. LIGHTS The display is backlighted for night use. To turn the backlights on or off, press the menu key repeatedly until the BACK LIGHT menu appears. Now press the up arrow to turn the lights on or the down arrow to turn them off.
FEET/METER This unit can show the depth in feet or meters. When it is in the metric mode, all depth readings, ranges, zooms, and alarm settings are in meters. When it's in the feet mode, all of the above settings are in feet. To change from feet to meters or vice-versa, press the menu key until the FEET/METER menu appears. Press the down arrow key to switch to metric, the up arrow to switch to feet. Displays show in feet when the unit is first turned on. The menu will clear automatically after a few seconds or you can press the PWR key to clear the screen.

DISPLAY CONTRAST The units display contrast is adjustable to suit different lighting conditions. This will help you see the screen from different angles, or at various times of the day. To adjust the contrast, press the menu key until the DARK/LIGHT menu appears. To decrease it, press the down arrow key. Press the up arrow key to increase the contrast. The bar graph in the Dark/Light menu box
shows a graph of the contrast. The screen will also show the effects of the change. If you reach the maximum or minimum level, a tone sounds alerting you to the limits. The menu will clear automatically after a few seconds or you can press the PWR key to clear the screen.
ASP (Advanced Signal Processing) ASP is a program embedded in the computer that is specifically designed to eliminate noise. It continually monitors the signals from the receiver, determines which echoes are noise and rejects them. This allows true target echoes to display on the screen with a minimum of clutter. This feature is especially useful since it typically lets you operate the boat at all speeds without adjusting the sensitivity or other controls. When the unit is first turned on, ASP is enabled. To turn ASP off, press the menu key repeatedly until the ASP menu appears. Now press the up arrow to turn it on or the down arrow to turn it off. The menu will clear automatically after a few seconds or you can press the PWR key to clear the screen.
SIMULATOR A simulator is built inside that can show a simulated bottom signal with fish signals. All features of the unit work normally when the simulator is in use. You can change the range, zoom, and use the alarms as desired. To use the simulator, press the menu key repeatedly until the SONAR SIM menu appears. Now press the up arrow to turn it on. Repeat the above steps to turn it off, or turn the unit off and back on again.
TROUBLESHOOTING - IMPORTANT INFORMATION! 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. Unit wont turn on: 1. Check the power cables connection at the unit. Also check the wiring. 2. Make certain the power cable is wired properly. The red wire connects to the positive battery terminal, black to negative or ground. 3. Check the fuse. 4. Measure the battery voltage at the units power connector. It should be at least 11 volts. If it isnt, the wiring to the unit is defective, the battery terminals or wiring on the terminals are corroded, or the battery needs charging. Unit freezes, locks up, or operates erratically: 1. Electrical noise from the boats motor, trolling motor, or an accessory may be interfering with the sonar unit. Rerouting the power and transducer cables away from other electrical wiring on the boat may help. Route the sonar units power cable directly to the battery instead of through a fuse block or ignition switch 2. Inspect the transducer cable for breaks, cuts, or pinched wires. 3. Check the transducer and power connector. Make certain it's securely plugged in to the unit. Weak bottom echo, digital readings erratic, or no fish signals: 1. Make certain 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 fiberglass and that it is securely bonded to the hull. Do NOT use RTV silicone rubber adhesive or MarinetexTM. 2. Electrical noise from the boats 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 signals such as fish or even structure from the display. 3. The water may be deeper than the sonars ability to find the bottom. If the sonar cant find the bottom signal while its in the automatic mode,

the digital will flash continuously. It may change the range to limits far greater than the water you are in. If this happens, place the unit in the manual mode, then change the range to a realistic one, (for example, 0100 feet) and increase the sensitivity. As you move into shallower water, a bottom signal should appear. 4. Check the battery voltage. If the voltage drops, the units transmitter power also drops, reducing its ability to find the bottom or targets. Bottom echo disappears at high speeds or erratic digital reading or weak bottom echo while boat is moving 1. The transducer may be in turbulent water. It must be mounted in a smooth flow of water in order for the sonar to work at all boat speeds. Air bubbles in the water disrupt the sonar signals, interfering with its ability to find the bottom or other targets. The technical term for this is Cavitation. 2. Electrical noise from the boats 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 signals such as fish or even structure from the display. Try using resistor spark plugs or routing the sonar units power and transducer cables away from other electrical wiring on the boat. No fish arches when the Fish ID feature is off: 1. Make certain transducer is pointing straight down. This is the most common problem if a partial arch is displayed. See the Fish Arch section in your owner's manual for more information. 2. The sensitivity may not be high enough. In order for the unit to display a fish arch, it has to be able to receive the fishs echo from the time it enters the cone until it leaves. If the sensitivity is not high enough, the unit displays 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 display 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 display as straight horizontal lines.
ELECTRICAL NOISE A major cause of sonar problems is electrical noise. This usually appears on the sonars display as random patterns of dots or lines. In severe cases, it can completely cover the screen with black dots, or cause the unit operate erratically, or not at all. To eliminate or minimize the effects of electrical noise, first try to determine 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 certain the engine is off, also. Turn your unit on, then turn off ASP (Advanced Signal Processing). 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 sonars 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. Keep doing this until all electrical equipment has been turned on, their effect on the sonar display noted, then turned off. If you find noise interference from an electrical instrument, trolling motor, pump, or radio, try to isolate the problem. You can usually reroute the sonar units power cable and transducer cable away from the wiring that is causing the interference. VHF radio antenna cables radiate noise when transmitting, so be certain to keep the sonars wires away from it. You may need to route the sonar units power cable directly to the battery to isolate it from other wiring on the boat. If no noise displays on the sonar unit from electrical equipment, then make certain everything except the sonar unit is turned off, then start the engine. Increase the RPM with the gearshift in neutral. If noise appears on the display, the problem could be one of three things; spark plugs, alternator, or tachometer wiring. Try using resistor spark plugs, alternator filters, or routing the sonar units power cable away from engine wiring. Again, routing the power cable directly to the battery helps eliminate noise problems. Make certain to use the in-line fuse supplied with the unit when wiring the power cable to the battery! When no noise appears on the sonar unit after all of the above tests, then the noise source is probably cavitation. Many novices or persons with limited experience make hasty sonar installations which function perfectly in shallow water, or when the boat is at rest. In nearly all cases, the cause of the malfunction will be the location and/or angle of the transducer. The face of the transducer must be placed in a location that has a smooth flow of water at all boat speeds.

U.S.A.only. Monday through Friday 8:00 A.M. - 8:00 P.M. Central time, except holidays.
Your unit is covered by a full one-year warranty. (See inside for complete warranty details.) If your unit fails and the failure is not covered by the original warranty, Eagle has a flat-rate repair policy that covers your unit and accessories packed with the unit at the factory. There is a 180-day warranty on all non-warranty repairs from the factory, which is similar to the original warranty, but is for 180 days rather than one year. For further details, please call us at the above number.
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.
To order accessories such as power cables or transducers, please contact:
1) Your local marine dealer. Most quality dealers that handle marine electronic equipment should be able to assist you with these items. Consult your local telephone directory for listings. 2) LEI Extras, Inc. P.O. Box 129 Catoosa, OK 74015-0129 or call 800-324-0045 (USA orders only.)
Remember, non-warranty repairs are subject to Eagle's published flat-rate charges and 180-day warranty.
EAGLE ELECTRONICS PO BOX 669 CATOOSA OK 74015

LITHO IN U.S.A.

988-0143-34