Eagle Electronics Stereo System 320C User Manual

Pub. 988-0143-781  
www.eaglesonar.com  
Fish-Finding & Depth-Sounding Sonar  
Installation and Operation  
Instructions  
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Table of Contents  
Introduction ............................................................................... I  
Capabilities and Specifications: Fisheasy 320c........................... 5  
How Sonar Works ......................................................................... 7  
How to Use this Manual: Typographical Conventions................ 8  
Installation & Accessories.....................................................11  
Preparations................................................................................ 11  
Transducer Installation.............................................................. 11  
Recommended Tools and Supplies ......................................... 12  
Transom Installation .......................................................... 12  
Trolling Motor Installations ............................................... 12  
Shoot-Through Hull Installations ...................................... 12  
Selecting a Transducer Location............................................ 13  
How Low Should You Go?....................................................... 14  
Shoot-Thru-Hull vs. Transom Mounting ............................... 15  
Transom Transducer Assembly and Mounting ..................... 16  
Trolling Motor Bracket Installation....................................... 20  
Transducer Orientation and Fish Arches.............................. 21  
Shoot-Thru-Hull Preparation................................................. 23  
Hulls with Floatation Materials......................................... 23  
Testing Determines Best Location......................................... 24  
Shoot-Thru-Hull Installation ................................................. 26  
Speed/Temperature Sensors.................................................28  
Speed Sensor Installation....................................................... 31  
Power Connections.................................................................. 33  
Mounting the Sonar Unit: in-Dash, Bracket or Portable...... 35  
Bracket Installation................................................................ 35  
Portable Sonar Installation.................................................... 38  
Installing the Batteries .......................................................... 39  
Portable Transducer Assembly .............................................. 41  
Basic Sonar Operation...........................................................43  
Keyboard Basics.......................................................................... 43  
1. Menu/Pwr (Menu and Power)............................................. 43  
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2. Ent/Pages (Enter and Pages).............................................. 44  
3. Exit ...................................................................................... 44  
4. Up and Down Arrows.......................................................... 44  
Memory........................................................................................ 44  
Menus.......................................................................................... 44  
Main Menu .............................................................................. 45  
Sonar Menu............................................................................. 46  
Pages ........................................................................................... 48  
Basic Sonar Quick Reference ..................................................... 51  
Sonar Operations........................................................................ 52  
Fish Symbols vs. Full Sonar Chart ........................................ 55  
Other Free Training Aids ....................................................... 56  
Advanced Sonar Options & Other Features......................58  
ASP(Advanced Signal Processing)......................................... 58  
Alarms ......................................................................................... 59  
Depth Alarms.......................................................................... 59  
To Adjust and Turn on the Shallow Alarm:....................... 60  
To Adjust and Turn on the Deep Alarm:............................ 60  
Fish Alarm............................................................................... 61  
Backlight Level ........................................................................... 61  
Calibrate Speed........................................................................... 62  
Chart Speed................................................................................. 63  
Colorline................................................................................... 64  
Contrast....................................................................................... 65  
Depth Cursor............................................................................... 66  
Depth Range - Automatic ........................................................... 67  
Depth Range - Manual................................................................ 67  
To Turn Auto Depth Range on Again .................................... 68  
FasTrack.................................................................................. 68  
Fish I.D.(Fish Symbols & Depths)......................................... 69  
FishTrack................................................................................. 70  
Overlay Data............................................................................... 71  
To Change Displayed Data Font Size .................................... 73  
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Ping Speed & HyperScroll....................................................... 74  
To Change Ping Speed:........................................................... 75  
To Adjust Sensitivity: ............................................................. 75  
To Turn Off HyperScroll:........................................................ 75  
Pop-Up Help................................................................................ 76  
Reset Options.............................................................................. 76  
Reset Water Distance ................................................................. 77  
Sensitivity & Auto Sensitivity.................................................... 77  
Automatic Sensitivity ............................................................. 78  
To Turn Auto Sensitivity Back On......................................... 79  
Set Keel Offset ............................................................................ 80  
Set Language .............................................................................. 81  
Software Version Information.................................................... 81  
Sonar Chart Mode....................................................................... 82  
Sonar Page & Sonar Chart Display Options ............................. 82  
Full Sonar Chart..................................................................... 83  
Split Zoom Sonar Chart.......................................................... 83  
Digital Data/Chart.................................................................. 84  
Sonar Simulator.......................................................................... 85  
Stop Chart................................................................................... 85  
Surface Clarity............................................................................ 86  
Transparency .............................................................................. 87  
Units of Measure......................................................................... 88  
Zoom Pan..................................................................................... 91  
Troubleshooting ......................................................................93  
Noise........................................................................................ 95  
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Notes  
iv  
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Introduction  
Thank you for buying an Eaglesonar! Your unit is a high-quality, re-  
markably-priced color sonar designed for both professional and novice  
fishermen. All Eagle sonars have an automatic mode that finds and  
displays the bottom, fish, underwater structure and more – right out of  
the box. All you have to do is press the on (MENU/PWR) key.  
However, if you want to fine-tune your unit, press the MENU key again.  
The FishEasy® 320C has several powerful features you can control by  
scrolling through easy-to-use menus with the arrow and menu keys.  
To get started with your Eagle sonar, first read the installation section.  
It contains instructions for mounting the sonar unit, the transducer  
and any optional accessories, such as a speed sensor.  
Following recommended installation practices will pay off in optimum  
performance of your FishEasy 320C. Improper installation can cause  
problems down the road, especially if the transducer is badly mounted.  
After you've read the installation instructions, install the unit and ac-  
cessories. Then, read the rest of the manual. The more you know about  
your sonar, the better it will work for you.  
Take advantage of the Simulator feature. It allows you to practice oper-  
ating your sonar before you get it in the water. And when you finally  
head for your favorite fishing hole, take this manual along for reference.  
Capabilities and Specifications: FishEasy 320C  
General  
Case size:......................... 5.8" H x 4.3" W x 2.5" D (14.7 cm H x 10.8 cm  
W x 6.6 cm D) sealed, waterproof; suitable for  
saltwater use.  
Display:............................ 1/4 VGA color, transflective TFT display; 3.5"  
(8.9 cm) diagonal viewing area.  
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Resolution:...................... 320 pixels (vert.) x 240 pixel (horiz.) resolu-  
tion; 153,600 total pixels  
Backlighting:.................. Backlit screen and keypad for night use.  
Input power:................... 10 to 17 volts DC.  
Current drain: ............... 200 ma lights off; 250 ma lights on.  
Back-up memory:.......... Built-in memory stores sonar settings when  
unit is turned off.  
Sonar  
Frequency:...................... 200 kHz.  
Transducers: .................. A model HST-WSU Skimmertransducer  
comes packed with your sonar unit. Operates  
at speeds up to 70 mph (61 kts). Optional thru-  
hull, portable and trolling motor transducers  
are available.  
Transmitter:................... 800 watts peak-to-peak power (typical); 100  
watts RMS power (typical).  
Sonar sounding  
depth capability: ........... 600 feet (182 meters). Actual capability de-  
pends on transducer configuration and in-  
stallation, bottom composition and water con-  
ditions. All sonar units typically read deeper  
in fresh water than in salt water.  
Depth display:................ Continuous digital readout.  
Audible alarms: ............. Deep/shallow/fish.  
Automatic ranging:....... Yes, with instant screen updates.  
Zoom bottom track: ...... Yes.  
Split-screen zoom:......... Yes.  
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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 Fahrenheit (-20 degrees to +75 degrees Cel-  
sius). Extended storage in temperatures higher or lower than speci-  
fied will damage the liquid crystal display in your unit. This type of  
damage is not covered by the warranty. For more information, con-  
tact the factory's Customer Service Department; phone numbers  
are inside the manual's back cover.  
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've never owned a sonar fish finder, this  
segment will tell you the underwater basics.  
Sonar is an abbreviation for SOund NAvigation and Ranging, a technol-  
ogy developed during World War II for tracking enemy submarines. (Ea-  
gle developed the world's first transistorized sportfishing sonar in 1957.)  
A sonar consists of a transmitter, transducer, receiver and display. In  
simple terms, here's how it finds the bottom, or the fish:  
The transmitter emits an electrical impulse, which the transducer con-  
verts into a sound wave and sends into the water. (The sound frequency  
can't be heard by humans or fish.) The sound wave strikes an object  
(fish, structure, bottom) and bounces back to the transducer, which  
converts the sound back into an electrical signal.  
The receiver amplifies this return signal, or echo, and sends it to the  
display, where an image of the object appears on the scrolling sonar  
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chart. The sonar's microprocessor calculates the time lapse between the  
transmitted signal and echo return to determine the distance to the  
object. The whole process repeats itself several times each second.  
How to use this manual: typographical conventions  
Many instructions are listed as numbered steps. The keypad and arrow  
"keystrokes" appear as boldface type. So, if you're in a real hurry (or  
just need a reminder), you can skim the instructions and pick out what  
menu command to use by finding the boldface command text. The fol-  
lowing paragraphs explain how to interpret the text formatting for  
those commands and other instructions:  
Arrow Keys  
The arrow keys control a horizontal line depth cursor on the sonar  
screen. The arrow keys also help you move around the menus so you  
can execute different commands. They are represented by symbols like  
these, which denote the down arrow key and the up arrow: ↓ ↑.  
Keyboard  
The other keys perform a variety of functions. When the text refers to a  
key to press, the key is shown in bold, sans serif type. For example, the  
"Enter/Pages" key is shown as ENT and the "Menu/Power" key is shown  
as MENU.  
Menu Commands  
A menu command or a menu option will appear in small capital letters,  
in a bold sans serif type like this: DEPTH CURSOR. These indicate that you  
are to select this command or option from a menu or take an action of  
some kind with the menu item. Text that you may need to enter or file  
names you need to select are show in italic type, such as data type.  
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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 written  
them in a condensed manner for quick and easy reading.  
For example, instructions for turning on the Fish IDfeature would  
look like this:  
1. From the Sonar Page, press MENU|to SONAR FEATURES|ENT.  
2. Press to FISH ID SYMBOLS|ENT|EXIT|EXIT.  
Translated into complete English, step 1 above would mean: "Start on  
the Sonar Page. Press the Menu key then repeatedly press (or press and  
hold) the down arrow key to scroll down the menu and select (highlight)  
the Sonar Features menu command. Then press the Enter key."  
Step 2 would mean: "Press the down arrow key to select (highlight) the  
Fish ID symbols command. Next, press the Enter key, then press the  
Exit key twice."  
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Notes  
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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 vehicle or vessel!  
1. Determine the approximate location for the sonar unit, so you can  
plan how and where to route the cables for the transducer and power.  
This will help you make sure you have enough cable length for the de-  
sired configuration.  
2. Determine the approximate location for the transducer and its cable  
route.  
3. Determine the location of your battery or other power connection,  
along with the power cable route.  
4. Install the transducer and route the transducer cable to the sonar  
unit.  
5. Route the power cable from the unit's location to an appropriate  
power source and connect it there.  
6. Connect the transducer/power cable to the unit and mount the sonar  
unit on the bracket.  
Transducer Installation  
These instructions will help you install your Skimmertransducer on a  
transom, on a trolling motor or inside a hull. Please read all instruc-  
tions before proceeding with any installation.  
Your Skimmer transducer typically comes packaged with a one-piece  
stainless steel bracket for mounting it to the transom of your boat. The  
optional trolling motor mount uses a one-piece plastic bracket with an  
adjustable strap. These are "kick-up" mounting brackets. They help pre-  
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vent damage if the transducer strikes an object while the boat is moving.  
If the transducer does "kick-up," the bracket can easily be pushed back  
into place without tools.  
Read these instructions carefully before attempting the installation.  
Determine which of the installation methods is right for your boat.  
Remember, the transducer location and installation is the most  
critical part of a sonar installation.  
Recommended Tools and supplies  
If you prefer the option of routing the cable through the transom, you  
will need a 5/8" drill bit. (If you intend to install an additional speed or  
temp sensor and route its cable through the same hole in the transom,  
you will need a 1" (25.4 mm) drill bit to accommodate all the cables.)  
NOTE:  
The following installation types also call for these recommended  
tools and required supplies that you must provide (supplies listed  
here are not included):  
Transom installation  
Tools include: two adjustable wrenches, drill, #29 (0.136") drill bit, flat-  
head screwdriver. Supplies: high quality, marine grade above- or below-  
waterline sealant compound.  
Trolling motor installations  
Tools: two adjustable wrenches, flat-head screwdriver. Supplies: plastic  
cable ties.  
Shoot-through hull installations  
Tools: these will vary depending on your hull's composition. Consult your  
boat dealer or manufacturer. Other tools are a wooden craft stick or  
similar tool for stirring and applying epoxy, and a paper plate or piece  
of cardboard to mix the epoxy on. Supplies: rubbing alcohol, 100 grit  
sandpaper, specially formulated epoxy adhesive available from LEI (see  
ordering information on the inside back cover). A sandwich hull also  
requires polyester resin.  
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Selecting a Transducer Location  
1. The location must be in the water at all times, at all operating speeds.  
2. The transducer must be placed in a location that has a smooth flow of  
water at all times. If the transducer is not placed in a smooth flow of  
water, interference caused by bubbles and turbulence will show on the  
sonar's display in the form of random lines or dots whenever the boat is  
moving.  
NOTE:  
Some aluminum boats with strakes or ribs on the outside of the  
hull create large amounts of turbulence at high speed. These boats  
typically have large outboard motors capable of propelling the boat  
at speeds faster than 35 mph. Typically, a good transom location on  
aluminum boats is between the ribs closest to the engine.  
3. The transducer should be installed with its face pointing straight  
down, if possible. For shoot-thru applications: Many popular fishing boat  
hulls have a flat keel pad that offers a good mounting surface. On vee  
hulls, try to place the transducer where the deadrise is 10° or less.  
Deadrise less than 10°  
Strakes  
Pad  
Left, vee pad hull; right, vee hull. A pod style transducer is shown  
here, but the principle is the same for Skimmers inside a hull.  
4. If the transducer is mounted on the transom, make sure it doesn't  
interfere with the trailer or hauling of the boat. Also, don't mount it  
closer than approximately one foot from the engine's lower unit. This  
will prevent cavitation (bubble) interference with propeller operation.  
5. If possible, route the transducer cable away from other wiring on the  
boat. Electrical noise from engine wiring, bilge pumps and aerators can  
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be displayed on the sonar's screen. Use caution when routing the trans-  
ducer cable around these wires.  
CAUTION: Clamp the trans-  
ducer cable to transom near  
the transducer. This will help  
prevent the transducer from  
entering the boat if it is  
knocked off at high speed.  
Good location  
Poor location  
Good  
location  
Good location  
Poor angle  
Good and poor transducer locations.  
How low should you go?  
For most situations, you should install your Skimmer transducer so  
that its centerline is level with the bottom of the boat hull. This will  
usually give you the best combination of smooth water flow and protec-  
tion from bangs and bumps.  
Transom  
Transducer  
centerline  
Hull bottom  
Align transducer centerline with hull bottom.  
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However, there are times when you may need to adjust the transducer  
slightly higher or lower. (The slots in the mounting brackets allow you  
to loosen the screws and slide the transducer up or down.) If you fre-  
quently lose bottom signal lock while running at high speed, the trans-  
ducer may be coming out of the water as you cross waves or wakes.  
Move the transducer a little lower to help prevent this.  
If you cruise or fish around lots of structure and cover, your transducer  
may be frequently kicking up from object strikes. If you wish, you may  
move the transducer a little higher for more protection.  
There are two extremes you should avoid. Never let the edge of the  
mounting bracket extend below the bottom of the hull. Never let the  
bottom – the face – of the transducer rise above the bottom of the hull.  
Shoot-thru-hull vs. Transom Mounting  
In a shoot-thru-hull installation, the transducer is bonded to the inside  
of the hull with epoxy. The sonar "ping" signal actually passes through  
the hull and into the water. This differs from a bolt-thru-hull installa-  
tion (often called simply "thru-hull"). In that case, a hole is cut in the  
hull and a specially designed transducer is mounted through the hull  
with a threaded shaft and nut. This puts the transducer in direct contact  
with the water.  
Typically, shoot-thru-hull installations give excellent high speed opera-  
tion and good to excellent depth capability. There is no possibility of  
transducer damage from floating objects, as there is with a transom-  
mounted transducer. A transducer mounted inside the hull can't be  
knocked off when docking or loading on a trailer.  
However, the shoot-thru-hull installation does have its drawbacks.  
First, 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 lay-up and construction.  
Second, the transducer angle cannot be adjusted for the best fish arches  
on your sonar display. (This is not an issue for flasher-style sonars.)  
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Lack of angle adjustment can be particularly troublesome on hulls that  
sit with the bow high when at rest or at slow trolling speeds.  
Third, a transducer CAN NOT shoot through wood and metal hulls.  
Those hulls require either a transom mount or a thru-hull installation.  
Fourth, if your Skimmer transducer has a built in temp sensor, it will  
only show the temperature of the bilge, not the water surface temp.  
Follow the testing procedures listed in the shoot-thru-hull installation  
section at the end of this lesson to determine if you can satisfactorily  
shoot through the hull.  
Transom Transducer Assembly And Mounting  
The best way to install the transducer is to loosely assemble all of the  
parts first, place the transducer's bracket against the transom and see if  
you can move the transducer so that it's parallel with the ground.  
1. Assembling the bracket. Press the two small plastic ratchets into the  
sides of the metal bracket as shown in the following illustration. 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 transducer's coarse angle adjustment for a  
14° transom. Most outboard and stern-drive transoms have a 14° angle.  
Dot  
Align plastic ratchets in bracket.  
2. Aligning the transducer on the transom. Slide the transducer be-  
tween the two ratchets. Temporarily slide the bolt though the transducer  
assembly and hold it against the transom. Looking at the transducer  
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from the side, check to see if it will adjust so that its face is parallel to  
the ground. If it does, then the "A" position is correct for your hull.  
If the transducer's face isn't 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 it's par-  
allel with the ground. If you can, then go to step 3. If it doesn't, repeat  
step 2, but use a different alignment letter until you can place the  
transducer on the transom correctly.  
Ratchets  
Insert bolt and check transducer position on transom.  
3. Assembling the transducer. Once you determine the correct posi-  
tion for the ratchets, assemble the transducer as shown in the following  
figure. Don't tighten the lock nut at this time.  
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Metal  
washer  
Nut  
Rubber  
washers  
Metal washer  
Bolt  
Assemble transducer and bracket.  
4. Drilling mounting holes. Hold the transducer and bracket assembly  
against the transom. The transducer should be roughly parallel to the  
ground. The transducer's centerline should be in line with the bottom of  
the hull. Don't let the bracket extend below the hull!  
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 using the #29 bit (for the #10 screws).  
Transom  
Transom  
Position transducer mount on transom and mark mounting holes.  
Side view shown at left and seen from above at right.  
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5. Attaching transducer to transom. Remove the transducer from  
the bracket and re-assemble it with the cable passing through the  
bracket 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 transducer to the transom. Slide the transducer up or down  
until it's aligned properly with the bottom of the hull as shown in the  
preceding and following figures. Tighten the bracket's mounting screws,  
sealing them with the sealant compound.  
Adjust the transducer so that it's parallel to the ground and tighten the  
nut until it touches the outer washer, then add 1/4 turn. Don't over  
tighten the lock nut! If you do, the transducer won't "kick-up" if it  
strikes an object in the water.  
Bottom  
of  
hull  
Flat-bottom hull  
Align transducer centerline with hull bottom and attach to transom.  
Deep-"vee" hull  
6. Route the transducer cable through or over the transom to  
the sonar unit. Make sure to leave some slack in the cable at the  
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transducer. If possible, route the transducer cable away from other wir-  
ing on the boat. Electrical noise from the engine's 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.  
WARNING:  
Clamp the transducer cable to the transom close to the  
transducer. This can prevent the transducer from enter-  
ing the boat if it is knocked off at high speed.  
If you need to drill a hole in the transom to pass the connector through,  
the required hole size is 5/8". (If you intend to route an additional speed  
or temp sensor cable through the same hole, you will need a 1" (25.4  
mm) drill bit instead.  
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. 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  
1. Attach the optional TMB-S bracket to the transducer as shown in the  
following figure, using the hardware supplied with the transducer.  
(Note: The internal tooth washer is supplied with the TMB-S.)  
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TMB-S bracket  
Internal tooth washer  
Nut  
Bolt  
Flat washer  
Attach motor mounting bracket to transducer.  
2. Slide the adjustable strap supplied with the TMB-S through the slot  
in 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 the transducer cable alongside the trolling motor shaft. Use  
plastic ties (not included) to attach the transducer cable to the trolling  
motor shaft. Make sure 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.  
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.  
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Partial fish arches  
Transducer aimed  
too far back  
Transducer aimed  
too far forward  
Full fish arch  
Proper transducer angle  
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 the  
arch is printed, then the nose of the transducer is angled too far down  
and needs to be raised.  
NOTE:  
Periodically wash the transducer's face with soap and water to re-  
move any oil film. Oil and dirt on the face will reduce the sensitivity  
or may even prevent operation.  
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Shoot-Thru-Hull Preparation  
Hulls With Floatation Materials  
The transducer installation inside a fiberglass hull must be in an area  
that does not have air bubbles in the resin or separated fiberglass lay-  
ers. 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. See the figure below.  
WARNING:  
Do not remove any material from your inner hull unless  
you know the hull's composition. Careless grinding or  
cutting on your hull can result in damage that could sink  
your boat. Contact your boat dealer or manufacturer to  
confirm your hull specifications.  
Fill with resin  
Fill with polyester resin  
Inner hull  
Flotation material  
Epoxy to hull first  
Outer hull  
Epoxy the transducer to a solid portion of the hull.  
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.  
Removing the inner layer of fiberglass and the balsa wood core exposes  
the outer layer of fiberglass. The transducer can then be epoxied di-  
rectly to the outer layer of fiberglass. After the epoxy cures for 24  
hours, fill the remaining space with polyester resin. When the job is  
finished, 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.  
23  
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Testing Determines Best Location  
Ideally, the shoot-thru transducer should be installed as close to the  
transom as possible, close to the centerline. This will give you the best  
performance during high speed maneuvers.  
Transducer location  
(trolling speed)  
Transducer location  
(high speed)  
Shoot-thru-hull transducer locations for  
high speed or trolling speed operation.  
To choose the proper location for shoot-thru-hull mounting, follow these  
testing procedures: (You may need a helper to complete these steps.)  
1. Anchor the boat in about 30 feet of water. Add a little water to the  
sump of the boat. Plug the transducer into the sonar unit, turn it on, then  
hold the transducer over the side of the boat in the water. Adjust the sen-  
sitivity and range controls until a second bottom echo is seen on the dis-  
play. (You'll need to turn off Auto Sensitivity, Auto Depth Range and  
ASP. Try a range setting that is two to three times the water depth. The  
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.  
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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. Next, take the transducer out of the water and place it in the water in  
the sump of the boat, face down. (The transducer face is shown in the  
figure on the following page.) Notice how the signal strength decreases.  
The second bottom signal will probably disappear and the bottom signal  
intensity will likely decrease.  
3. Now move the transducer around to find the best location with the  
strongest possible bottom signal. If you find a spot with an acceptable  
bottom signal, mark the location and move on to step 4.  
If you can't get an acceptable bottom signal, try turning up the sensitivity  
by three or five keystrokes and then move the transducer around once  
more. If you find a spot that works, mark it and move on to step 4.  
If you have to turn up sensitivity by more than five keystrokes to get a  
good signal, the transducer should be mounted on the outside of the  
hull. This is especially true if you have to turn sensitivity all the way  
up to get a decent bottom signal.  
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  
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with the boat on plane and observe the bottom signal. You'll need to figure  
some way to prop the transducer into position while you make your test  
run. (A brick or two might be sufficient to hold it in place.)  
5. When you're satisfied with a location, mark it and proceed with  
the installation.  
Shoot-thru-hull Installation  
If you are installing the transducer on a hull with floatation material  
sandwiched within the hull, refer to the text "Hulls With Flotation Ma-  
terials" beginning on page 23.  
1. Make sure the area is clean, dry and free of oil or grease, then sand  
both the inside surface of the hull and the face of the transducer with  
100 grit sandpaper. The sanded hull area should be about 1-1/2 times  
the diameter of the transducer. The surface of the hull must be flat so  
the entire transducer face is in contact with the hull prior to bonding.  
After sanding, clean the hull and transducer with rubbing alcohol to  
remove any sanding debris.  
Spread epoxy here  
Sand this surface  
(unit's face)  
Orient the Skimmer  
with the nose facing  
the bow of the boat.  
To bow  
Epoxy transducer to hull.  
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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.  
2. The epoxy consists of the epoxy itself and a hardener. Remove the  
two compounds from the package and place them on the paper plate.  
Thoroughly stir the two compounds together until the mixture has a  
uniform color and consistency. Do not mix too fast or bubbles will form  
in the epoxy. After mixing, you have 20 minutes to complete the in-  
stallation before the epoxy becomes unworkable.  
Spread a thin layer of epoxy (about 1/16" or 1.5 mm thick) on the face of  
the transducer as shown in the previous figure. Make sure there are no  
air pockets in the epoxy layer! Then, apply the remaining epoxy to the  
sanded area on the hull.  
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.  
4. Apply a weight, such as a brick, to hold the transducer in place while  
the epoxy cures. Be careful not to bump the transducer while the epoxy  
is wet. Leave the weight in place for a minimum of three hours. Allow  
the epoxy to cure for 24 hours before moving the boat.  
5. After the epoxy has cured, route the cable to the sonar unit and it's  
ready to use.  
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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 well  
or some other location. These units can accept an optional speed sensor  
for showing speed and distance traveled. However, you can only use one  
accessory at a time. If you would like to use a speed sensor and a secon-  
dary temperature sensor at the same time, you will need a combination  
device.  
NOTE:  
If a second temp sensor is used, it must be the model TS-2U. This  
model has a fixed electronic "address" which designates it as the  
second of two temp sensors.  
Primary temp sensor  
built into transducer  
TS-2U secondary  
external temp sensor  
shown as T2  
Full Chart page showing dual temperature display.  
See the following charts for sample sensor combinations and cable con-  
nections.  
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Sonar unit  
rear view  
ST-TU combination  
speed and temperature  
sensor  
3-amp fuse  
12-volt battery  
Power/trans-  
ducer cable  
Temperature sensor  
built into transducer  
HST-WSU  
Sonar unit with external combination speed and temperature sensor.  
Primary temp sensor is built into the transducer.  
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Sonar unit  
rear view  
TS-2U  
temperature  
sensor  
3-amp fuse  
12-volt battery  
Power/trans-  
ducer cable  
Temperature sensor  
built into transducer  
HST-WSU  
Sonar unit with secondary external temperature sensor. Primary temp  
sensor is built into the transducer.  
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Sonar unit  
rear view  
SP-U speed only  
sensor  
3-amp fuse  
12-volt battery  
Power/trans-  
ducer cable  
Temperature sensor  
built into transducer  
HST-WSU  
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 the  
accessory ordering information inside the back cover of this manual.  
The following instructions describe how to install the speed sensor.  
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. (If you intend to route the sensor  
cable through the same hole as the transducer cable, you will need a 1"  
(25.4 mm) drill bit instead of the 5/8" drill bit.)  
First find a location on the boat's transom where the water flow is smooth-  
est. Don't mount the sensor behind strakes or ribs. These will disturb the  
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water flow to the speed sensor. Make sure the sensor will remain in the  
water 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 foot  
to the side of the transom's centerline.  
Once you've determined the proper location for the unit, place the sen-  
sor on the transom. The bottom of the bracket should be flush with the  
hull's bottom. Using the sensor as a template, mark the hull for the  
screws' pilot holes. Drill four 1/8" holes, one in each end of the slots.  
Mount the sensor to the hull using #8 stainless steel wood screws (not  
included). Use a high quality, marine grade above- or below-waterline  
caulking compound to seal the screws. Make sure the sensor is flush  
with the bottom of the hull and tighten the screws.  
Good location  
Stern view showing good location for mounting sensor on transom.  
Transom  
Bottom of hull  
Bottom of hull  
Speed sensor mounting configuration:  
side view (left) and rear view (right.)  
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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 ensure  
a 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 through,  
the required hole size is 5/8". (The hole is 1" (25.4 mm) if you intend to  
route the sensor cable through the same hole as the transducer cable.)  
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 screws.  
The sensor is now ready for use. Connect the sensor to the accessory  
socket on the back of the unit. If you have any questions concerning the  
installation of the sensor, please contact your local boat dealer.  
Power Connections  
The unit works from a 12-volt battery system. You can attach the  
power cable to your boat's accessory or power buss or directly to the  
battery. If you use an accessory buss but have problems with electrical  
interference, attach the power cable directly to the battery. If the cable  
is not long enough, splice #18 gauge wire onto it.  
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.  
This may result in corrosion of the plug body along with the electri-  
cal contacts in the cable and the unit's power socket.  
In saltwater environments we recommend you connect the power  
cable to the auxiliary power switch included in most boat designs.  
If that results in electrical interference, or if such a switch is not  
available, we recommend connecting direct to the battery and in-  
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stalling an inline switch. This will let you shut off power to the  
power cable when the unit is not in use. When you are not using  
the unit, you should always shut off power to the power cable, es-  
pecially when the power cable is disconnected from the unit.  
Optional power off switch  
for saltwater installations  
To unit  
Black wire  
Red wire with  
12 volt  
3 amp fuse  
battery  
Power and transducer connections for the FishEasy 320C sonar  
unit (direct battery connection shown).  
If possible, keep the power cable away from other boat wiring, espe-  
cially the engine's wires. This will provide the best isolation from elec-  
trical noise. The power cable has two wires, red and black. Red is the  
positive lead, black is negative or ground. Make sure to attach the in-  
line fuse holder to the red lead as close to the power source as possible.  
For example, if you have to extend the power cable to the battery or  
power buss, attach one end of the fuse holder directly to the battery or  
power buss. This will protect both the unit and the power cable in the  
event of a short. It uses a 3-amp fuse.  
CAUTION:  
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.  
NOTE:  
For more corrosion protection in saltwater or high humidity envi-  
ronments, apply a thin layer of electrical-grade grease to each end  
of the fuse before installing it in the fuse holder.  
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This unit has reverse polarity protection. No damage will occur if the  
power wires are reversed. However, the unit will not work until the  
wires are attached correctly.  
MOUNTING THE SONAR UNIT: In-Dash, Bracket or Portable  
You can install the sonar unit on the top of a dash with the supplied  
bracket. At the time of this printing, we do not produce an in-dash  
mounting kit for the FishEasy 320C. If you wish to check on the future  
availability of this kit, refer to the accessory ordering information in-  
side the back cover of this manual.  
Bracket Installation  
Recommended tools for this job include: drill, 1" (25.4 mm) drill bit, screw-  
driver. Required supplies for this job include: high quality, marine grade  
above- or below-waterline caulking compound, three #10 stainless steel  
screws. Screw length and type should be suitable for the material on which  
you intend to mount the bracket.  
Mount the unit in any convenient location, provided there is clearance  
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/transducer  
cable. (See the following drawings, which show the dimensions of a  
gimbal-mounted FishEasy 320C sonar unit.)  
Holes in the bracket’s base allow wood screw or through-bolt mounting.  
You may need to place a piece of plywood on the back side of thin pan-  
els to reinforce the panel and secure the mounting hardware.  
Drill a 1" (25.4 mm) hole in the dash for the power/transducer and ac-  
cessory cables. The best location for this hole is immediately under the  
gimbal bracket location. This way, the bracket can be installed so that  
it covers the hole, holds the cables in position and results in a neat in-  
stallation. Some customers, however, prefer to mount the bracket to the  
side of the cable hole — it's a matter of personal preference.  
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82.7  
[3.26]  
107.5  
[4.23]  
156  
[6.26]  
12.09 [0.48]  
76.9  
[3.03]  
Millimeter  
[Inch]  
70.3  
[2.77]  
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 cable  
with a good marine caulking compound. (Some marine dealers stock ca-  
ble hole covers to conceal the opening.)  
Using the Quick Release Mounting Bracket  
These units use a quick release mounting bracket. When you run the  
cables through the bracket's cable slots, make sure you allow enough  
slack for tilting the unit and attaching the connector. (The snug fit of  
the push-on waterproof connector requires some force to attach.)  
Align the bracket over the cable hole with the cable slots facing away  
from you and fit the cable through one of the slots. Fasten the bracket  
to the dash using the three screw holes.  
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Ratchet  
Rear  
(away from viewer)  
Screw hole  
Power/transducer cable  
Cable slot  
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/transducer  
and accessory cables. Then, hold the sonar unit vertically and slide it  
onto the bracket from above. (The back of the unit should be touching  
the front of the bracket as you lower it into position.) As you push  
down, the unit will lock into place with a distinct click.  
To adjust the viewing angle, pinch the ratchets with one hand, then tilt  
the unit with your other hand. Release the ratchets and the unit locks  
into the new position. To dismount the unit for storage, press the ratch-  
ets and lift the unit off the bracket.  
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Bracket front  
Mount the sonar: slide the unit onto the bracket from above.  
Depress  
ratchets to  
release  
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 operation. It uses the optional PPP-12 portable power pack.  
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The power pack and portable transducers expand the uses for your so-  
nar. You can use your FishEasy 320C sonar unit on your boat or take it  
to the dock, on a float tube, on an ice fishing trip or use it as a second  
sonar in a friend's boat.  
The PPP-12 package includes the power pack, battery adapter and a port-  
able transducer. The transducer can be stored inside the power pack. The  
PPP-12 requires eight AA alkaline batteries. Batteries are not included.  
To use a portable power pack, you simply install the batteries and then  
attach the sonar unit to the power pack's bracket. Plug in the  
power/transducer cable and you're ready to fish.  
The PPP-12 has a quick-release mounting bracket built into the case.  
Installing the Batteries  
Release the latch on the front of the power pack case. Open the com-  
partment and install eight AA batteries into the adapter. For the long-  
est life, we recommend you use alkaline batteries.  
NOTE:  
When the unit is not in use, we recommend you unplug the power  
connector to reduce the possibility of corrosion or battery drain.  
When you store the unit, always remove the batteries because dead  
batteries can leak and corrode the contacts.  
After installing the batteries, close the case and plug the sonar unit's  
power cable into the socket on the power pack case.  
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PPP-12 Portable Power Pack with FishEasy 320C stowed for transport.  
Turn the sonar unit on. If it doesn't work, make sure the battery termi-  
nals are making good contact against the battery contacts. Also check  
the wiring connections on the battery adapter. The red wire on the  
power cable should be attached to the red wire on the battery adapter  
and the power cable's black wire should be connected to the black wire  
on the battery adapter.  
If it still doesn't work, check the battery voltage. Most of the complaints  
we receive about portable units result from stale batteries. Make sure  
the ones you buy are fresh.  
In cold weather the efficiency of dry cell batteries drops with the tem-  
perature. We find it a good idea to have the sonar unit good and warm  
along with the batteries before we leave home.  
If the batteries do lose a charge, you can sometimes restore them by  
placing them in a warm room or car interior. A better way is to replace  
them with batteries that have been kept warm.  
WARNING:  
Never heat the batteries over an open flame or direct hot  
air onto them. A fire or explosion could result.  
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Portable Transducer Assembly  
Recommended tools for installation include a slotted screw driver and  
two 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 side of the transducer, inside  
the bracket. Slide the other washer over the end of the bolt and thread  
the nut onto it.  
Screw the suction cup onto the bracket using the supplied screw and flat  
washer. Tie the nylon cord through the hole in the top of the bracket.  
When using this transducer, tie the other end of the nylon cord to the boat.  
This will help prevent the loss of the transducer if it comes off the boat.  
Tie nylon  
cord here  
Screw  
Suction  
cup  
Nut  
Bolt  
Washer  
Washer  
Transducer  
Portable transducer assembly: rear view (left) and side view (right.)  
Clean the chosen area of the hull before attaching the suction cup. Lo-  
cate the transducer on the hull as shown in the following figure. Don't  
allow the bracket to extend below the hull, because water pressure  
against it can cause the suction cup to come off at speed.  
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Moisten the cup, then press it onto the hull as firmly as possible. Tie  
the nylon cord to the boat and route the transducer cable to the sonar  
unit. Your portable sonar is now ready for use.  
Suction  
cup  
Bracket  
Hull  
Transducer  
Portable transducer installed on boat transom.  
NOTE:  
For optimum operation, the portable transducer should be adjusted  
so that it is parallel to the ground. For more information on this, see  
the earlier segment on Transducer Orientation and Fish Arches.  
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Basic Sonar Operation  
Keyboard Basics  
The unit sounds a tone when you press any key. This tells you the unit  
has accepted a command. Numbers in the photo correspond to key ex-  
planations below:  
2
1
4
3
FishEasy 320C Sonar, front view, showing screen and keyboard.  
1. MENU/PWR (menu and power)  
This key appears in the manual text simply as MENU. Press this key to  
turn the unit on and off. While the unit is on, you can use this key to  
open the two major menus that access the many features that control  
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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 adjusting a feature, use this key to select a highlighted option.  
When no menus are on the screen, pressing this key will make the unit  
cycle through the four Sonar Chart Display Options.  
3. EXIT  
Press this key to clear menus from the screen and return to the Sonar  
Chart display. You will also use EXIT to cancel alarms, and to clear any  
information windows that may appear on the screen.  
4. UP and DOWN ARROWS  
These keys appear in the manual text as or . Use these keys to move  
through the menu options and to adjust virtually every feature and  
function on the sonar unit.  
Memory  
This unit has permanent memory that saves all user settings, even when  
power is removed. It does not require, nor does it use an internal backup  
battery, so you never have to worry about replacement batteries.  
Menus  
Your sonar unit will work fine right out of the box with the factory de-  
fault settings. You only need to learn a few basic functions to enhance  
your viewing. We'll discuss them briefly here, then talk about them and  
all the other commands in more detail in the next section, which begins  
on page 58.  
Your unit has two primary menus that control its operation.  
They are the Main Menu and the Sonar Menu.  
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Main Menu  
The Main Menu contains some basic function commands and some setup  
option 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 EXIT. (Remember, our text style for "MENU|MENU" means  
"press the Menu key twice." See a full explanation of our instruction text  
formatting on page 9, Instructions = Menu Sequences.)  
Main Menu.  
Main Menu Commands  
There are four "basic" Main Menu commands that you'll really want to  
read more about. They are:  
Screen commands (CONTRAST, BACKLIGHT LEVEL and TRANSPARENCY):  
change the appearance of the display screen. Use these commands to  
adjust how the screen looks under various lighting conditions.  
Volume command: controls sound levels for key strokes and alarms. If  
you don't like to hear a beep each time you press a key, you can turn all  
sounds off by setting the volume to zero. Sound is especially useful when  
used with the Fish I.D.fish symbol feature and fish alarm feature.  
Sonar Alarms command: turns alarms on or off and changes alarm  
thresholds. The fish alarm, used with Fish I.D., is the most popular  
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use. It tells you when the sonar sees a fish. You can also set deep or  
shallow depth alarms.  
Popup Help command: turns the pop-up help boxes on or off. When  
you select a menu command, these information boxes appear to tell you  
what the command does or how to use the command. The default set-  
ting is on, which is really handy while you're learning.  
The remaining Main Menu commands are for more advanced functions,  
mostly setting various sonar options. (They're all detailed in the Ad-  
vanced Section.)  
Units of Measure command: selects the units of measure used for  
showing speed/distance, depth and temperature.  
Set Keel Offset command: calibrates the unit to show depth under  
the keel or actual depth from the surface.  
Calibrate Water Speed command: adjusts how a speed sensor  
measures water speed.  
Reset Water Distance command: resets water distance log to zero.  
Sonar Simulator command: turns the simulator feature on and off.  
Useful for learning how to operate the unit and all its functions.  
Reset Options command: returns all options and auto functions to  
their original factory settings. It's a great safety net while you're  
learning and experimenting with various settings.  
Set Language command: your unit has menus in 10 different lan-  
guages. This command switches from one language to another.  
Software Information command: tells you which version of the op-  
erating software is loaded in your unit.  
Sonar Menu  
The Sonar Menu contains commands for the major sonar features and  
options. You access the Sonar Menu by pressing the MENU key one  
time. You run a command by using the or to highlight the command  
and then pressing ENT. To clear the menu screen and return to the  
Page display, press EXIT.  
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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 and  
options. Most of them are described in detail only in the Advanced Sec-  
tion, but Sensitivity and Auto Sensitivity are important basic functions  
that are discussed both here and in the Advanced Section. The other So-  
nar Menu commands include:  
ColorLinecommand: separates fish and structure near the bottom  
from the actual bottom, and defines bottom composition/hardness.  
Depth Range command: manually sets the depth range shown on  
the sonar chart.  
Auto Depth Range command: automatically sets the depth range  
shown on the sonar chart to always keep the bottom in view.  
Stop Chart command: stops the sonar chart from scrolling. Used  
when you want to "freeze" the image for closer study.  
Chart Speed command: sets the scrolling speed of the sonar chart.  
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Depth Cursor 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: launches the Sonar Features menu which  
controls many functions and options, including screen color mode, auto  
depth and sensitivity, surface clarity, noise rejection, Fish I.D.sym-  
bols, the zoom bar and zone bar.  
Ping Speed command: sets the rate at which sonar pings are made.  
Zoom Level command: controls the display size of sonar signal im-  
ages.  
Pages  
The FishEasy 320C has three major display options. They are the Full  
Sonar Chart, Split Zoom Sonar Chart, and Digital Data.  
You access the various display modes by pressing the ENT/PAGES key.  
As you press this key, the unit cycles among the four page options. To  
return to a previous page, simply press ENT until the desired page ap-  
pears again.  
The Full Sonar Chart is the main display option. 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.  
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Surface signal  
Surface clutter  
Digital data  
overlay  
(depth &  
temperature)  
Depth scale  
Zoom bar  
Fish arches  
around school  
of bait fish  
In FasTrack, fish  
arches show as  
horizontal bars.  
Structure  
Bottom signal  
FasTrack bar graph  
Sonar Page, showing full sonar chart mode.  
Sonar chart display options: full sonar chart (left) and split zoom.  
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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 in  
the Advanced Section, but to show you how easy the sonar unit is to op-  
erate, the next two pages contain a simplified, 10-step quick reference  
that will cover most fish finding situations. The quick reference de-  
scribes how your unit will operate with all the sonar features in their  
automatic modes, which are set at the factory.  
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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 on the unit, press and release MENU key.  
4. Head for your fishing grounds. Your unit automatically displays digi-  
tal depth and surface water temperature in the corner of the screen.  
The auto settings will track the bottom, displaying it in the lower por-  
tion of the screen. The full sonar chart will scroll from right to left,  
showing you what's under the boat as you cruise across the water.  
5. As you're watching the sonar returns, you can change the display by:  
Zoom in to enlarge the chart for more detail, or…  
Zoom out to return to full chart mode.  
Press MENU||ENT to select which Zoom Mode you want to use.  
6. If necessary, adjust sensitivity to improve chart readability. Press  
MENU|ENT and the Sensitivity Menu will appear on the left of your  
screen. Use and to change the setting.  
Boosting sensitivity will show more information on your screen, which  
may cause clutter. Reducing sensitivity will filter out some information,  
but could omit important images. We recommend adjusting sensitivity  
until the background is lightly "peppered" — that is, scattered dots ap-  
pear, but individual objects (like fish arches or bottom structure) can be  
easily picked out of the background.  
7. Watch the display for the appearance of fish arches. When you see  
arches, you've found fish! Stop the boat and get your lure or bait into  
the water at the depth indicated on the sonar chart.  
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8. Gauge the fish depth by visually comparing the fish arches with the  
depth scale on the right side of the screen, or get a more accurate  
measure with the Depth Cursor. Press MENU|to DEPTH CURSOR|ENT.  
Press (or ) to align the cursor line with the fish arch. The exact  
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.  
10. To turn off the unit, press and hold MENU key for three seconds.  
Sonar Operations  
As you can see from the quick reference on the previous page, basic operation  
is pretty easy, right out of the box. If you are a sonar novice, try operating the  
unit with the factory defaults until you get a feel for how it's working.  
As you're learning the basics, there is one setting you might want to tinker  
with from time to time — Sensitivity.  
Sensitivity controls the unit's ability to pick up echoes. If you want to  
see more detail, try increasing the sensitivity, a little at a time. There  
are situations when too much clutter appears on the screen. Decreasing  
the sensitivity can reduce the clutter and show the strongest fish ech-  
oes, if fish are present. As you change the sensitivity setting, you can  
see the difference on the chart as it scrolls.  
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Bait  
Fig. 2  
school  
Thermocline  
with fish  
Fish  
arches  
Fig. 1  
Fig. 2  
Fig. 3  
Fig. 4  
These figures show results of different sensitivity levels on the same  
location. Fig. 1: Sensitivity at 87 percent, determined by Auto Sensitiv-  
ity. Typical of full auto mode. Fig. 2: Sensitivity set at 50 percent. Fig. 3:  
Sensitivity set at 20 percent. Fig. 4: Sensitivity set at 100 percent.  
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You can change the sensitivity level whether you are in Auto Sensitiv-  
ity mode or Manual Sensitivity mode. The adjustment method works  
the same in both modes, but it gives you slightly different results.  
Adjusting sensitivity in Auto Sensitivity Mode is similar to manually ad-  
justing 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. In the sonar unit, auto mode will let you increase sensitiv-  
ity to 100 percent, but the unit will limit your minimum setting. This pre-  
vents you from turning sensitivity down too low to allow automatic bot-  
tom tracking. When you change the setting with auto turned on, the unit  
will continue to track the bottom and make minor adjustments to the sen-  
sitivity level, with a bias toward the setting you selected.  
Adjusting sensitivity in Manual Sensitivity Mode is similar to driving a  
car without cruise control — you have complete manual control of the  
car's speed. In the sonar unit, manual mode allows you to set sensitiv-  
ity at 100 percent (maximum) or zero percent (minimum.) Depending  
on water conditions, the bottom signal may completely disappear from  
the screen when you reduce sensitivity to about 50 percent or less!  
Try adjusting sensitivity in both auto and manual modes to see how  
they work.  
To adjust sensitivity:  
1. Press MENU|ENT.  
2. The Sensitivity Control Bar appears. Press to decrease sensitivity;  
press to increase sensitivity. When it's set at the desired level, press  
EXIT. (When you reach the maximum or minimum limit, a tone sounds.)  
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Display showing Sensitivity Control Bar.  
NOTE:  
If you want to change the sensitivity in Manual Mode, first turn off  
Auto Sensitivity: from the Sonar Page, press MENU|to AUTO  
SENSITIVITY|ENT|to SENSITIVITY|ENT. Press or to pick a different  
sensitivity setting. When it's set at the desired level, press EXIT.  
Important Tip:  
While you are experimenting and learning, it's possible to scramble  
the settings so that the sonar picture disappears from your screen.  
If that happens, remember that it's easy to switch back to full  
automatic operation by simply restoring the factory auto settings.  
Here's how:  
To Restore Factory Settings  
1. Press MENU|MENU|to RESET OPTIONS|ENT.  
2. The unit asks if you want to reset all the options. Press or to  
YES|ENT. All options are reset, and the unit reverts back to the  
original settings.  
Fish Symbols vs. Full Sonar Chart  
You may have noticed in the quick reference that we used fish arches in  
full sonar chart mode for our example, and not the popular Fish I.D.  
fish symbol feature. Here's why.  
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Fish I.D. is an easier way for a sonar novice to recognize a fishy signal  
return when he sees it. However, locating fish by symbol only has some  
limitations.  
Your sonar unit's microprocessor is remarkably powerful, but it can be  
fooled. Some of the echoes calculated to be fish could be tree limbs or  
turtles! To see what's under your boat in maximum detail, we recom-  
mend you turn off Fish I.D. and begin learning to interpret fish arches.  
Fish I.D. is most handy when you're in another part of the boat or per-  
forming some task that prevents you from watching the sonar screen.  
Then, you can turn on Fish I.D. and the audible fish alarm. When that  
lunker swims under your boat, you'll hear it!  
Fish I.D. can also be useful when you want to screen out some of the  
sonar detail gathered by your unit. For example, in one case fishermen  
in San Francisco Bay saw clouds of clutter in the water but no fish  
arches. When a down rigger was pulled up, it brought up several small  
jellyfish. The fishermen switched their Eagle sonar to Fish I.D., which  
screened out the schools of jellyfish and clearly showed the game fish  
there as fish symbols.  
Other Free Training Aids  
The following section discusses Fish I.D., fish alarms and other fea-  
tures in greater detail. If you or a friend has Internet access, you can  
also learn more about interpreting what you see on your sonar screen.  
Visit our web site, WWW.EAGLESONAR.COM. Be sure to check out the  
free Sonar Tutorial, which includes animated illustrations and more  
pictures of actual sonar returns, all described in detail. There's even a  
"printer friendly" version of the tutorial available on our web site…it  
makes a great supplement to this operation manual!  
For the ultimate training aid, be sure to download the free emulator  
software for your unit. 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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This PC application simulates the actual sonar unit on your computer.  
You can run it from your computer keyboard or use your mouse to press  
the 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. To  
run it, click the buttons with your mouse pointer.  
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Advanced Sonar Options & Other Features  
Material in this section is arranged in alphabetical order.  
ASP(Advanced Signal Processing)  
The ASPfeature is a noise rejection system built into the sonar unit  
that constantly evaluates the effects of boat speed, water conditions  
and interference. This automatic feature gives you the best display pos-  
sible under most conditions.  
The ASP feature is an effective tool in combating noise. In sonar terms,  
noise is any undesired signal. It is caused by electrical and mechanical  
sources such as bilge pumps, engine ignition systems and wiring, air  
bubbles passing over the face of the transducer, even vibration from the  
engine. In all cases, noise can produce unwanted marks on the display.  
The ASP feature has four settings — Off, Low, Medium and High. If  
you have high noise levels, try using the "High" ASP setting. However,  
if you are having trouble with noise, we suggest that you take steps to  
find the interference source and fix it, rather than continually using the  
unit with the high ASP setting.  
There are times when you may want to turn the ASP feature off. This  
allows you to view all incoming echoes before they are processed by the  
ASP feature.  
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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 SONAR FEATURES|ENT.  
2. Press to NOISE REJECTION|ENT.  
3. Press or to select a setting, then press ENT.  
4. To return to the previous page, press EXIT|EXIT.  
Alarms  
This unit has two different types of sonar alarms. The first is a Fish Alarm.  
It sounds when the Fish I.D.feature determines that an echo is a fish.  
The other alarm is the Depth Alarm, which has both a Shallow and a  
Deep setting. Only the bottom signal will trigger this alarm. This is  
useful as an anchor watch, a shallow water alert or for navigation.  
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. It will continue to  
sound until the bottom goes deeper than 10 feet.  
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The deep alarm works just the opposite. It sounds a warning tone if the  
bottom depth goes deeper than the alarm's setting. Both depth alarms  
work only off the digital bottom depth signals. No other targets will trip  
these alarms. These alarms can be used at the same time or individually.  
At left, Main Menu and Sonar Alarms command.  
At right, the Sonar Alarms menu.  
To adjust and turn on the shallow alarm:  
1. Press MENU|MENU|to SONAR ALARMS|ENT.  
2. Press ENT to access depth feature.  
3. Press or until the depth is correct, then press ENT.  
4. Press to SHALLOW ALARM ENABLED|ENT|EXIT|EXIT.  
5. To turn off the alarm, press MENU|MENU|to SONAR ALARMS| ENT||  
ENT|EXIT|EXIT.  
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. Press MENU|MENU|to SONAR ALARMS|ENT.  
2. Press to DEEP ALARM DEPTH|ENT.  
3. Press or until the depth is correct, then press ENT.  
4. Press to DEEP ALARM ENABLED|ENT|EXIT|EXIT.  
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5. To turn off the alarm, press MENU|MENU|to SONAR ALARMS|ENT|↓  
to DEEP ALARM ENABLED|ENT|EXIT|EXIT.  
To switch to a different depth setting, open the Sonar Alarms menu and  
repeat the instructions in step 3 above.  
Fish Alarm  
Use the fish alarm for a distinctive audible alarm when fish or other  
suspended objects are detected by the Fish I.D.feature (Fish I.D.  
must be turned on for the Fish Alarm to work). A different tone sounds  
for each fish symbol size shown on the display.  
Sonar Alarms menu with Fish Alarm selected. The check box  
to the left is checked, indicating the alarm is turned on.  
To turn the fish alarm on:  
1. Press MENU|MENU|to SONAR ALARMS|ENT.  
2. Press to FISH ALARM|ENT|EXIT|EXIT.  
3. To turn off the alarm, press MENU|MENU|to SONAR ALARMS|ENT|↓  
to FISH ALARM|ENT|EXIT|EXIT.  
Backlight Level  
The unit defaults to the maximum backlight level. To adjust the dis-  
play's backlight level:  
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Press MENU|MENU|to BACKLIGHT LEVEL|ENT. The BACKLIGHT LEVEL 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 control bar appears automatically whenever you turn on the unit.  
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 – 10 in the calibration window. If the sen-  
sor is reading 5 percent slower than true speed, you will enter + 5 in  
the window.  
Perform your test in relatively calm water free of current, if possible.  
(Unless, of course, you are taking the current speed into consideration  
when making your calculation.) After you have a correction figure,  
here's how to enter it:  
1. Press MENU|MENU|to CALIBRATE WATER SPEED|ENT.  
2. Enter the number you calculated earlier: press or to change the dis-  
played number. Continue until the percentage is correct, then press EXIT.  
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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 set  
there for virtually all fishing conditions.  
However, you might consider experimenting with chart speed when you  
are stationary or drifting very slowly. You may sometimes achieve bet-  
ter images as you slow down the chart speed to match how fast you are  
moving across the bottom.  
If you are at anchor, ice fishing or fishing from a dock, experiment with  
a chart speed around 50 percent. If you are drifting slowly, try a chart  
speed around 75 percent. When you are stationary and a fish swims  
through the sonar signal cone, the image appears on the screen as a  
long line instead of a fish arch. Reducing the chart speed may result in  
a shorter line that more closely resembles a regular fish return.  
Chart Speed control bar.  
If you do experiment with chart speed, remember to reset it to maxi-  
mum when you resume trolling or moving across the water at higher  
speed. To change chart speed:  
1. From the Sonar Page, press MENU|to CHART SPEED|ENT.  
2. The Chart Speed Control Bar appears. Press to decrease chart  
speed; press to increase chart speed.  
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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 preset  
value. This allows you to tell the difference between a hard and soft  
bottom. For example, a soft, muddy or weedy bottom returns a weaker  
signal which is shown with a narrow, colored line (dark blue tinged  
with red or a little yellow.) Since fish are among the weakest echoes,  
they show up mostly as blue arches. A hard bottom or other relatively  
hard target returns a strong signal which causes a wider brightly col-  
ored line (reddish yellow to bright yellow.)  
If you have two signals of equal size, one with red to yellow color and  
the other without, then the target with brighter color (yellow) is the  
stronger signal. This helps distinguish weeds from trees on the bottom,  
or fish from structure.  
ColorLine is adjustable. Experiment with your unit to find the Color-  
Line setting that's best for you.  
ColorLine control bar.  
To adjust the ColorLine level:  
1. From the Sonar Page, press MENU|to COLORLINE|ENT.  
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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.  
Wider  
ColorLine  
Thin or no ColorLine  
At left, little ColorLine indicates a soft bottom, probably sand or mud.  
At right, the wider ColorLine indicates a harder, rocky bottom.  
Contrast  
To adjust the display's contrast:  
Press MENU|MENU|ENT. The CONTRAST slider bar appears. Press or ↓  
to move the bar. The lower end of the scale is minimum contrast; the  
upper end is maximum contrast. When contrast is set at the desired  
level, press EXIT.  
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Contrast Command, left, and Contrast control bar, right.  
Depth Cursor  
The depth cursor consists of a horizontal line with a digital depth box on  
the right side. The numbers inside the box show the depth of the cursor.  
Cursor line  
Depth box  
Sonar chart with the depth cursor active. The line  
indicates the large fish is 40.52 feet deep.  
The cursor can be moved to any location on the screen, letting you pin-  
point the depth of a target.  
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1. From the Sonar Page, press MENU|to DEPTH CURSOR|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 automatically  
placed in the lower half of the screen. This is called Auto Ranging and  
is part of the automatic function. However, depending upon the bottom  
depth and the current range, you can change the range to a different  
depth. To do this:  
1. From the Sonar Page, press MENU|to DEPTH RANGE|ENT.  
The Depth Range Control Scale.  
2. The Depth Range Control Scale appears. Press or to select a dif-  
ferent depth range. A blue bar highlights the selected range. Range  
numbers in gray cannot be selected.  
3. When the new range is selected, press EXIT to clear the menu.  
Depth Range - Manual  
You have complete control over the range when the unit is in the man-  
ual mode. There are 12 depth ranges, from 5 feet to 800 feet.  
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To switch to Manual Depth Range:  
1. First, turn off automatic depth range. From the Sonar Page, press  
MENU|to AUTO DEPTH RANGE|ENT.  
2. Press to DEPTH RANGE|ENT and the Depth Range Control Scale appears.  
3. Press or to select a different depth range. A horizontal blue bar  
highlights the selected range.  
4. When the new range is selected, press EXIT to clear the menu.  
To turn Auto Depth Range on again:  
1. From the Sonar Page, press MENU|to AUTO DEPTH RANGE|ENT|EXIT.  
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. FasTrack gives you a rapid update of condi-  
tions directly under the boat. This makes it useful for ice fishing, or  
when you're fishing at anchor. When the boat is not moving, fish sig-  
nals are long, drawn out lines on a normal chart display. FasTrack con-  
verts the graph to a vertical bar graph that, with practice, makes a use-  
ful addition to fishing at a stationary location.  
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Surface clutter  
Fish arches  
Structure  
In FasTrack, fish  
arches show as  
horizontal bars.  
Bottom signal  
ColorLine  
FasTrack bar graph  
Sonar Page showing FasTrack.  
Fish I.D.(Fish Symbols & Depths)  
The Fish I.D. feature identifies targets that meet certain conditions as  
fish. The microcomputer analyzes all echoes and eliminates surface  
clutter, thermoclines, and other signals that are undesirable. In most  
instances, remaining targets are fish. The Fish I.D. feature displays  
fish symbols on the screen in place of the actual fish echoes.  
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. It can't  
distinguish between fish and other suspended objects such as trotlines,  
turtles, submerged floats, air bubbles, etc. Individual tree limbs ex-  
tending outwards from a group of limbs is the hardest object for the  
Fish I.D. feature to distinguish from fish.  
You may see fish symbols on the screen when actually, there are no  
fish. The reverse is also true.  
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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 work  
out of reading the screen. Remember: Fish I.D. is one of the many tools  
we provide so you can analyze your sonar returns for maximum fish  
finding information. This and other features can help you successfully  
"see" beneath the boat under varied water and fishing conditions. So,  
practice with the unit in both the Fish I.D. mode and without to become  
more familiar with the feature. The default for Fish I.D. is on.  
Sonar Features menu with Fish I.D. Symbols selected.  
When the check box to the left is checked, the feature is on.  
To turn the Fish I.D. feature on:  
1. From the Sonar Page, press MENU|to SONAR FEATURES|ENT.  
2. Press to FISH ID SYMBOLS|ENT|EXIT|EXIT.  
To turn off Fish I.D., repeat these instructions.  
FishTrack  
The FishTrack feature shows the depth of a fish symbol when it ap-  
pears on the display. This lets you accurately gauge the depth of tar-  
gets. This feature is available only when the Fish I.D. feature is on. The  
default setting for FishTrack is off.  
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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 SONAR FEATURES|ENT.  
2. Press to FISH ID DEPTHS|ENT|EXIT|EXIT.  
To turn off FishTrack, repeat these instructions. Turning off FishTrack  
in this manner will not turn off Fish I.D. symbols.  
Symbols with  
FishTrack depths  
Sonar Features menu with Fish I.D. Depths selected. When the check  
box to the left is checked, the feature is on. At right, Sonar Page show-  
ing Fish I.D. symbols and FishTrack depths turned on.  
HyperScroll  
See the entry on Ping Speed, which controls the HyperScroll feature.  
Noise Rejection  
See the entry on Advanced Signal Processing in this section.  
Overlay Data  
To change the digital data shown on top of the sonar page:  
1. Press MENU|to OVERLAY DATA|ENT.  
2. Press or to select Data Type|ENT.  
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Overlay Data Shown selection menu. In this example,  
we scrolled down the data list to highlight "Water Speed."  
When selected, a check mark appears beside the data type. (If you wish,  
you may now use or to select other Data Types for display.)  
Data list showing "Water Speed" selected to display on Sonar Page.  
3. To return to the previous page, press EXIT|EXIT.  
To turn off displayed data:  
1. Press MENU|to OVERLAY DATA|ENT.  
2. Press or to select Data Type, then press ENT until the check mark  
to the left of the selected data type disappears. (If you wish, you may  
now use or to select other Data Types to turn off.)  
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3. To return to the previous page, press EXIT|EXIT.  
To change displayed data font size:  
1. Press MENU|to OVERLAY DATA|ENT.  
2. Press or to select Data Type, then press ENT. The DATA SIZE (dis-  
played in the bottom of the Overlay Data Shown window) cycles  
through available sizes. Keep pressing ENT until it shows the desired  
Data Size, then press EXIT.  
The selected data type will be displayed in the new size. (To change the  
font size for another Data Type, press ENT and repeat these steps, be-  
ginning with step two above.)  
3. To return to the previous page, press EXIT.  
Tip:  
If you wish, you can change the displayed data font size when you  
select a data type:  
1. Press MENU|to OVERLAY DATA|ENT.  
2. Press or to select Data Type|press ENT repeatedly until the  
desired font size is shown.  
The data will be shown in the new font size. To return to the previ-  
ous page, press EXIT|EXIT.  
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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 transducer  
broadcast sonar sound waves — pings — into the water. The unit has a  
default ping speed of 50 percent. At normal boating speeds, this auto-  
matically provides enough return echoes to refresh the screen and scroll  
the chart at maximum chart speed.  
However, when you are running at high speeds, or just want the fastest  
possible screen update, you may want to use the HyperScrollfeature.  
When you change the Ping Speed to any setting greater than 50 per-  
cent, the unit automatically enters HyperScroll mode.  
These faster ping rates allow you to maintain a high-detail picture on  
the screen, and the screen refresh rate and chart scroll speed can keep  
pace with the boat as it moves quickly over the bottom terrain.  
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. If this occurs, just  
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decrease the sensitivity to a level that eliminates the clutter. When you  
turn 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 PING SPEED|ENT.  
2. The Ping Speed Control Bar appears. Press to increase ping speed;  
press to decrease ping speed. When it's set at the desired level, press  
EXIT.  
To adjust Sensitivity:  
1. From the Sonar Page, press MENU|ENT.  
2. The Sensitivity Control Bar appears. Press to decrease sensitivity;  
press to increase sensitivity. When it's set at the desired level, press  
EXIT. (When you reach the maximum or minimum limit, a tone sounds.)  
To turn off HyperScroll:  
1. From the Sonar Page, press MENU|to PING SPEED|ENT.  
2. The Ping Speed Control Bar appears. Press to decrease ping speed  
to 50 percent. When it's set at the desired level, press EXIT.  
When you boost ping speed and switch into HyperScroll, the width of  
the FasTrack bar graph display doubles in width at the right side of the  
screen. This allows you to better see the virtually instantaneous sonar  
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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. By  
highlighting a menu item and leaving it highlighted for a few seconds, a  
"pop-up" message appears that describes the function of the menu item.  
This feature is on by default.  
To set up Popup Help: Press MENU|MENU|to POPUP HELP. With the  
option highlighted, press ENT to check it (turn on) and uncheck it (turn  
off). After the option is set, press EXIT to return to the page display.  
Main Menu, left, with Pop-up Help command highlighted. At right,  
this example shows the Pop-up Help message for the Sensitivity  
command, 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.  
1. Press MENU|MENU|to RESET OPTIONS|ENT.  
2. Press or to YES|ENT.  
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3. All the menus are cleared and all options are returned to the factory  
settings.  
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 that  
shows distance traveled, called Water Distance ("W Distance"). This  
information is calculated from an optional water speed sensor. The Wa-  
ter Distance window can be reset to zero using the Reset Water Dis-  
tance command.  
Press MENU|MENU|to RESET WATER DISTANCE|ENT. The menus are  
cleared and the water distance is reset to 0.00.  
Screen Contrast and Backlight Level  
See the separate entries in this section for Contrast and Backlight Level.  
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. A low  
sensitivity level (from zero to 50 percent) excludes much of the bottom  
information, fish signals, and other target information.  
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High sensitivity levels let you see this detail, but it can also clutter the  
screen with many undesired signals. Typically, the best sensitivity level  
shows a good solid bottom signal with ColorLine and some surface clut-  
ter.  
Automatic Sensitivity  
The default sensitivity mode is automatic. The unit bases the sensitiv-  
ity level on water depth and conditions. When the unit is in the auto-  
matic mode, sensitivity is automatically adjusted to keep a solid bottom  
signal displayed, plus a little more power. This gives it the capability to  
show fish and other detail.  
However, situations occur when it becomes necessary to increase or de-  
crease the sensitivity. This typically happens when you wish to see  
more detail, so an increase in sensitivity is indicated. Or, wave action  
and boat wakes can create enough tiny air bubbles to clutter much of  
the water column. In that case, a decrease in sensitivity is indicated to  
reduce some of the clutter.  
The control bar used to adjust sensitivity up or down is the same  
whether the unit is in the automatic or manual mode. In automatic you  
can adjust sensitivity up to 100 percent but the unit will limit your  
minimum setting. In auto, the unit will continue to make small ad-  
justments, allowing for the setting you selected.  
In manual mode, you have complete control over sensitivity, with the  
ability to set it anywhere from zero to 100 percent. Once you select a  
level in manual, the unit will continue to use that exact sensitivity set-  
ting until you change it or revert to auto mode.  
To adjust sensitivity in auto mode:  
1. Press MENU|ENT.  
2. The Sensitivity Control Bar appears. Press to decrease sensitivity;  
press to increase sensitivity. When it's set at the desired level, press  
EXIT. (When you reach the maximum or minimum limit, a tone sounds.)  
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The Sensitivity Control Bar.  
To adjust sensitivity in manual mode:  
1. First, turn off Auto Sensitivity: from the Sonar Page, press MENU|↓  
to AUTO SENSITIVITY|ENT.  
2. Press to SENSITIVITY|ENT and the Sensitivity Control Bar appears.  
Press or to pick a different sensitivity setting. When it's set at the  
desired level, press EXIT.  
To turn Auto Sensitivity back on:  
From the Sonar Page, press MENU|to AUTO SENSITIVITY|ENT|EXIT.  
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 and re-  
set the factory setting at the same time.  
Tip:  
For quicker sensitivity adjustments, try leaving the Sensitivity  
Control Bar on the screen as the chart scrolls. You can see the  
changes on the screen as you press the up or down arrows. This is  
handy when there's a lot of clutter in the water, and you are  
matching the sensitivity to rapidly changing water conditions.  
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Set Keel Offset  
This unit measures water depth from the face of the transducer. Since  
the 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 the  
surface, and the screen shows the water depth as 30 feet, then the ac-  
tual depth is 31 feet.  
On sailboats or other large vessels with deep drafts, the distance be-  
tween the transducer installation and the keel or lower engine unit can  
be several feet. In those cases, an inexact depth reading could result in  
grounding or striking underwater structure. The Keel Offset feature  
eliminates the need for the navigator to mentally calculate how much  
water is under his keel.  
Keel Offset lets you calibrate the digital depth indicators: 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. In this example, we will use  
3.5 feet. We enter this as a negative 3.5 feet, which makes the depth indica-  
tors perform as if the transducer's lower in the water than it really is.  
1. Press MENU|MENU|to SET KEEL OFFSET|ENT.  
2. The Keel Offset dialog box appears. Press to so that the displayed  
number shows a minus (–) sign instead of the plus (+) sign.  
3. Press until the number shows – 3.5, then press EXIT. The depth  
indicators now accurately show the depth of water beneath the keel.  
NOTE:  
If knowing the exact depth of water beneath the keel is less impor-  
tant, you can calibrate the depth indicators so that they show the ac-  
tual water depth from surface to bottom. To do this, first measure the  
distance from the face of the transducer up to the surface (the water  
line on the boat). In this example, we will use 1.5 feet. This will be en-  
tered as a positive 1.5 feet, which makes the depth indicators perform  
as if the transducer's higher in the water than it really is.  
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1. Press MENU|MENU|to SET KEEL OFFSET|ENT.  
2. The Keel Offset dialog box appears with a plus (+) sign at the front of  
the box.  
3. Press until the displayed number is + 1.5, then press EXIT. The  
depth indicators now accurately show the water depth from surface to  
bottom.  
Set Language  
This unit's menus are available in 10 languages: English, French, Ger-  
man, Spanish, Italian, Danish, Swedish, Russian, Dutch and Finnish.  
To select a different language:  
1. Press MENU|MENU|to SET LANGUAGE|ENT.  
2. Use or to select a different language and press ENT. All menus  
now appear in the language you selected.  
Software Version Information  
From time to time, Eagle updates the operating system software in  
some of its products. These software upgrades are usually offered to  
customers as free downloads from our web site, www.eaglesonar.com.  
These upgrades make the unit perform better or introduce a new fea-  
ture or function. You can find out what software version is running in  
your sonar unit by using the Software Information command.  
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At left, Main Menu with Software Information command selected.  
At right, the Software Information screen.  
1. Press MENU|MENU|to SOFTWARE INFO|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 color scheme for the sonar chart is white background, but  
we offer other variations to suit your viewing preferences. In addition  
to white, you can select the chart to be displayed in grayscale, reverse  
grayscale, blue background, night view, ice view, or bottom color tracking.  
To 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 to Mode Name|ENT.  
4. Press EXIT|EXIT to return to the Sonar Page.  
Sonar Page & Sonar Chart Display Options  
The FishEasy 320C offers three chart display options. To cycle through  
them, press EXIT to clear any menus, then press ENT repeatedly until  
the desired mode appears.  
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Full Sonar Chart  
This is the default mode used when the unit is turned on for the first  
time or when it's reset to the factory defaults.  
The bottom signal scrolls across the screen from right to left. Depth  
scales on the right side of the screen aid in determining the depth of  
targets. The line at the top of the screen represents the surface. The  
bottom depth and surface temperature (if equipped with a temperature  
sensor or a transducer with a temp sensor built in) show at the top left  
corner of the screen.  
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.)  
Full Sonar Chart. The Overlay Data (depth and water temperature)  
are each set to a different text size.  
Split Zoom Sonar Chart  
A split chart shows the underwater world from the surface to the bot-  
tom on the right side of the screen. The left side shows an enlarged ver-  
sion of the right side.  
The zoom range shows at the bottom left corner of the screen.  
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Split Zoom Sonar Chart. Image at left shows the left window zoomed  
to 2X. The right image shows the left window zoomed to 4X.  
The depth overlay data is set to the default large text size; the  
water temperature is set to the medium text size.  
Digital Data/Chart  
This mode shows five large digital boxes or windows containing: Water  
Depth; Surface Water Temperature; Temperature #2; Water Speed (from  
an optional speed sensor); and Water Distance (distance traveled or logged;  
it also requires a speed sensor).  
NOTE:  
Temperature #2 requires an additional optional temperature sensor.)  
Digital Data/Chart  
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Sonar Simulator  
This unit has a built-in simulator that lets you run it as if you were on  
the water. All sonar features and functions are useable. When in  
simulator 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 Sonar Page, press MENU|MENU|to SONAR SIMULATOR|ENT.  
2. Turn off Sonar Simulator by pressing MENU|MENU|to SONAR  
SIMULATOR|ENT|EXIT.  
NOTE:  
If you turn on your unit 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. Unlike the  
simulator, the demo mode is for demonstration only, and will auto-  
matically stop as soon as you turn on the unit with a transducer at-  
tached. The simulator will continue to function normally.  
Stop Chart  
If you are running multiple units on a boat, there are times when you  
may want to turn off the sonar. This command turns off the sonar and  
stops the chart from scrolling. Sonar restarts automatically each time  
you turn on your unit.  
Press MENU|to STOP CHART|ENT|EXIT.  
To turn on sonar and start the chart scrolling again, repeat the above step.  
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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.  
The surface clarity control reduces or eliminates surface clutter signals  
from the display. It does this by changing the sensitivity of the receiver,  
decreasing it near the surface and gradually increasing it as the depth  
increases.  
There are three levels of surface clarity available: low, medium, or high.  
It can also be turned off. The default level is off.  
To adjust the Surface Clarity level:  
1. From the Sonar Page, press MENU|to SONAR FEATURES|ENT|ENT.  
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Sonar Features menu with Surface Clarity selected.  
2. Press or to select clarity level|EXIT|EXIT|EXIT.  
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. A high transparency allows you to continue monitoring the sonar  
chart while adjusting feature settings, though the text of the menus  
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may fade until it is unreadable. A low transparency will usually make  
menu 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 Transparency level:  
Press MENU|MENU|to TRANSPARENCY|ENT. The TRANSPARENCY slider bar  
appears. Press or to move the bar. The lower end of the scale makes  
the menus opaque; the upper end is maximum transparency. Press EXIT  
to remove the slider bar from the display.  
Units of Measure  
This menu sets the speed and distance (statute or nautical miles, me-  
ters), depth (feet, fathoms, or meters) and temperature (degrees Fahr-  
enheit or Celsius). To change the units:  
Press MENU|MENU|to UNITS OF MEASURE|ENT.  
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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 sound  
levels for keystrokes and alarms. If you want to turn off all sounds, set  
the volume to zero.  
To adjust volume:  
1. Press MENU|MENU|to VOLUME|ENT.  
2. The Volume Control Bar appears. Press to decrease the volume; press  
to increase the volume. When it's set at the desired level, press EXIT.  
Zoom & Zoom Bar  
"Zooming" the display is used to enlarge small detail, fish signals and  
the bottom with its associated structure.  
The 2X zoom doubles the size of all echoes on the screen. The 4X zoom  
quadruples the size of the echoes. You can also turn on a zoom bar on  
the far right side of the screen; this shows which echoes will be dis-  
played on the screen when the Zoom commands are used.  
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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 show  
only 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 switch to zoom:  
1. Press MENU|to ZOOM LEVEL|ENT.  
2. The Zoom Level menu appears. Press or to select the desired  
zoom level, then press ENT|EXIT to set the zoom and clear the menu.  
3. To select a different zoom or turn zoom off, repeat steps 1 and 2.  
To turn on the Zoom Bar:  
1. Press MENU|to SONAR FEATURES|ENT.  
2. The Sonar Features menu appears. Press  
BAR|ENT|EXIT|EXIT.  
to ZOOM  
3. To turn off the Zoom Bar, repeat steps 1 and 2.  
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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 "Sensitivity" to "Zoom Level," because the menu "wraps"  
around in a circle. This trick also works on the main menu!  
Tip:  
If you don't mind giving up a little screen space, you can zoom the  
display faster if you leave the Zoom menu on. That makes it easy to  
very quickly switch back and forth among the zoom settings.  
Zoom Pan  
Your unit has the handy ability to quickly zoom in on any portion of the  
water column with just the touch of an arrow key. The Zoom Pan feature  
lets you rapidly move the zoomed area up and down to different depths.  
By "pointing" your zoom at different portions of the chart as it scrolls,  
you can get a good, close-up look at structure or cover below you.  
To use Zoom Pan, switch to a manual depth Range setting (see page 67)  
and turn on 2X or 4X Zoom. Then, simply press or to pan up and  
down the water column.  
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Notes  
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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.  
Unit won't turn on:  
1. Check the power cable's connection at the unit. Also check the wiring.  
2. Make sure 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 unit's power connector. It should  
be at least 11 volts. If it isn't, the wiring to the unit is defective, the  
battery terminals or wiring on the terminals are corroded, or the bat-  
tery needs charging.  
Unit operates only in demo mode:  
1. The transducer has not yet been connected or has been disconnected.  
To leave demo mode, make sure the transducer is securely connected  
before turning the unit on.  
Unit freezes, locks up, or operates erratically:  
1. Electrical noise from the boat's motor, trolling motor, or an accessory  
may be interfering with the sonar unit. Rerouting the power and trans-  
ducer cables away from other electrical wiring on the boat may help.  
Route the sonar unit's 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 both the transducer and power connectors. Make sure both are  
securely plugged in to the unit.  
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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 trans-  
ducer, 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. When attaching a transducer to  
the inside of a hull, ONLY use the epoxy available from LEI (order in-  
formation is inside the back cover). Do NOT use RTV silicone rubber  
adhesive or any other type of epoxy. The LEI epoxy is specially formu-  
lated so that it will cure properly for shoot-through applications.  
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  
signals such as fish or even structure from the display.  
3. The water may be deeper than the sonar's ability to find the bottom.  
If the sonar can't find the bottom signal while it's in the automatic  
mode, the digital sonar display will flash continuously. It may change  
the range to limits far greater than the water you are in. If this hap-  
pens, place the unit in the manual mode, then change the range to a  
realistic one, (for example, 0-100 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 unit's transmitter  
power also drops, reducing its ability to find the bottom or targets.  
Bottom echo disappears at high speeds or erratic digital read-  
ing 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 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  
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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 cables  
away 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. This is the most  
common problem if a partial arch is displayed.  
2. The sensitivity may not be high enough. In order for the unit to dis-  
play a fish arch, it has to be able to receive the fish's echo from the time  
it enters the cone until it leaves. If the sensitivity is not high enough,  
the unit shows 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 dis-  
play 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 screen as  
straight horizontal lines.  
Noise  
A major cause of sonar problems is electrical noise. This usually ap-  
pears on the sonar's display as random patterns of dots or lines. In se-  
vere cases, it can completely cover the screen with black dots, or cause  
the unit to operate erratically, or not at all.  
To eliminate or minimize the effects of electrical noise, first try to de-  
termine 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 sure  
the engine is also off. Turn your sonar on, then turn off Noise Reject  
[also known as the ASP feature (Advanced Signal Processing)]. Sensi-  
tivity should be set at 90-95 percent. 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 sonar's display. For example, turn  
on the bilge pump and view the sonar display for noise. If no noise is  
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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 mo-  
tor, pump, or radio, try to isolate the problem. You can usually reroute  
the sonar unit's 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 sonar's wires away  
from it. You may need to route the sonar unit's 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 ap-  
pears 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 unit's 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. Read your trans-  
ducer owner's manual for the best mounting position.  
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Index  
Interpreting, 55  
FishTrack, 70  
A
Frequency, 6  
Accessories, 5, 11, 35, 36  
Alarms, 45, 59, 60, 61  
Depth Alarms, 59  
H
Fish Alarm, 59, 61  
Antenna, 96  
HyperScroll, 71, 74  
ASP(Advanced Signal Processing),  
24, 58  
I
Installation, 11, 26, 31, 35, 38, 39  
Introduction  
B
Specifications, 5  
Typographical Conventions, 8  
Backlights / Lighting, 6, 45, 61, 62, 77  
Batteries, 11, 33, 34, 39, 40, 44, 93, 94,  
96  
K
Keel Offset, 46, 80, 81  
Keypad Description, 8  
C
Calibrate Speed, 62  
Chart Speed, 47, 63  
Contrast, 45, 65, 66, 77  
Cursor, 8, 48, 52, 66, 67, 80  
L
Languages, 46, 81  
M
D
Main Menu, 44, 45, 46, 60, 76, 77, 82,  
88, 89  
Depth Cursor, 8, 48, 52, 66, 67  
Depth Range, 24, 25, 47, 67, 68, 83, 91,  
94, 95  
N
Automatic, 67  
Manual, 67  
Display Options, 44, 48, 82, 83, 84  
Noise Rejection, 59, 71  
O
F
Overlay Data, 48, 71, 72, 73, 74, 83  
FasTrack, 68  
Fish Depths, 70  
Fish I.D., 45, 48, 55, 59, 61, 69  
Fish Symbols, 45, 48, 55, 59, 61, 69  
P
Page Displays, 8, 48  
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Digital Data, 48, 77, 84  
Ping Speed, 48, 71, 74, 75  
HyperScroll, 71, 74  
Sonar Operation  
Quick Reference, 51  
Speed Sensors, 5, 7, 28, 31, 32, 46, 62,  
77, 84  
Pop-up Help, 76  
Stop Chart, 47, 85, 86  
Surface Clarity, 86, 87  
Power, 6, 8, 11, 33, 34, 35, 37, 38, 39,  
40, 43, 44, 51, 78, 93, 94, 95, 96  
Product Specifications, 5  
T
R
Temperature Sensors, 7, 12, 16, 20, 28,  
29, 30, 83  
Range, 24, 25, 47, 67, 68, 83, 91, 94, 95  
Automatic, 67  
Transducer, 5, 6, 7, 11, 12, 13, 14, 15,  
16, 17, 18, 19, 20, 21, 22, 23, 24, 25,  
26, 27, 29, 30, 31, 33, 34, 35, 37, 39,  
41, 42, 51, 52, 58, 68, 74, 80, 83, 85,  
93, 94, 95, 96  
Manual, 67  
Reset Options, 46, 55, 76, 77, 79  
Reset Water Distance, 46, 77  
Route, 11, 12, 13, 19, 20, 21, 27, 31, 33,  
42, 93, 96  
Mounting, 20  
Shoot-Thru-Hull, 23  
S
U
Sensitivity, 24, 47, 51, 52, 53, 54, 55,  
75, 76, 77, 78, 79, 91, 95  
Units of Measure, 46, 88, 89  
Simulator, 5, 46, 85  
Software Version Information, 81  
Sonar Chart Color Mode, 82  
Sonar Chart Display Options, 44, 48, 82,  
83, 84  
Z
Zooming, 6, 48, 51, 83, 89, 90, 91, 95  
Zoom Bar, 89, 90, 91  
Zoom Pan, 91  
Sonar Menu, 44, 46, 47, 76, 86, 91  
98  
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EAGLE ELECTRONICS  
FULL ONE-YEAR WARRANTY  
"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. WE MAKE NO OTHER EXPRESS WARRANTY OR REPRESENTATION OF ANY  
KIND WHATSOEVER CONCERNING THIS PRODUCT. Your remedies under this warranty will be  
available so long as you can show in a reasonable manner that any defect or malfunction in materials  
or workmanship, or any non-conformity with the product's written specifications, occurred within one  
year from the date of your original purchase, which must be substantiated by a dated sales receipt or  
sales slip. Any such defect, malfunction, or non-conformity which occurs within one year from your  
original purchase date will either be repaired without charge or be replaced with a new product identi-  
cal or reasonably equivalent to this product, at our option, within a reasonable time after our receipt of  
the product. If such defect, malfunction, or non-conformity remains after a reasonable number of at-  
tempts to repair by us, you may elect to obtain without charge a replacement of the product or a re-  
fund for the product. THIS REPAIR, OR REPLACEMENT OR REFUND (AS JUST DESCRIBED) IS  
THE EXCLUSIVE REMEDY AVAILABLE TO YOU AGAINST US FOR ANY DEFECT,  
MALFUNCTION, OR NON-CONFORMITY CONCERNING THE PRODUCT OR FOR ANY LOSS OR  
DAMAGE RESULTING FROM ANY OTHER CAUSE WHATSOEVER. WE WILL NOT UNDER ANY  
CIRCUMSTANCES BE LIABLE TO ANYONE FOR ANY SPECIAL, CONSEQUENTIAL,  
INCIDENTAL, OR OTHER INDIRECT DAMAGE OF ANY KIND.  
Some states do not allow the exclusion or limitation of incidental or consequential damages, so the  
above limitations or exclusions may not apply to you.  
This warranty does NOT apply in the following circumstances: (1) when the product has been serviced  
or repaired by anyone other than us; (2) when the product has been connected, installed, combined,  
altered, adjusted, or handled in a manner other than according to the instructions furnished with the  
product; (3) when any serial number has been effaced, altered, or removed; or (4) when any defect,  
problem, loss, or damage has resulted from any accident, misuse, negligence, or carelessness, or from  
any failure to provide reasonable and necessary maintenance in accordance with the instructions of  
the owner's manual for the product.  
We reserve the right to make changes or improvements in our products from time to time without  
incurring the obligation to install such improvements or changes on equipment or items previously  
manufactured.  
This warranty gives you specific legal rights and you may also have other rights which may vary from  
state to state.  
REMINDER: You must retain the sales slip or sales receipt proving the date of your original purchase  
in case warranty service is ever required.  
EAGLE ELECTRONICS  
PO BOX 669, CATOOSA, OK 74015  
(800) 324-1354  
99  
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How to Obtain Service…  
…in the USA:  
We back your investment in quality products with quick, expert service  
and genuine Eagle replacement parts. If you're in the United States  
and you have technical, return or repair questions, please contact the  
Factory Customer Service Department. Before any product can be re-  
turned, you must call customer service to determine if a return is nec-  
essary. Many times, customer service can resolve your problem over the  
phone without sending your product to the factory. To call us, use the  
following toll-free number:  
800-324-1354  
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.  
…in Canada:  
If you're in Canada and you have technical, return or repair questions,  
please contact the Factory Customer Service Department. Before any  
product can be returned, you must call customer service to determine if  
a return is necessary. Many times, customer service can resolve your  
problem over the phone without sending your product to the factory. To  
call us, use the following toll-free number:  
800-661-3983  
905-629-1614 (not toll-free)  
8 a.m. to 5 p.m. Eastern Standard Time, M-F  
…outside Canada and the USA:  
If you have technical, return or repair questions, contact the dealer in  
the country where you purchased your unit. To locate a dealer near  
you, visit our web site, www.eaglesonar.com and look for the Dealer Lo-  
cator.  
100  
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Accessory Ordering Information  
for 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 should  
be able to assist you with these items.  
To locate an Eagle dealer near you, visit our web site, www.eaglesonar.com and look  
for the Dealer Locator. Or, you can 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 www.lei-extras.com.  
3) Canadian customers can write:  
Lowrance/Eagle Canada, 919 Matheson Blvd. E. Mississauga, Ontario L4W2R7  
or fax 905-629-3118.  
Shipping Information  
If it becomes necessary to send a product for repair or replacement, you must  
first receive a return authorization number from Customer Service. Products  
shipped without a return authorization will not be accepted. When shipping, we  
recommend you do the following:  
1. Please do not ship the knobs or mounting bracket with your unit.  
2. If you are sending a check for repair, please place your check in an envelope  
and tape it to the unit.  
3. For proper testing, include a brief note with the product describing the  
problem. Be sure to include your name, return shipping address and a daytime  
telephone number. An e-mail address is optional but useful.  
4. Pack the unit in a suitable size box with packing material to prevent any  
damage during shipping.  
5. Write the Return Authorization (RA) number on the outside of the box  
underneath your return address.  
6. For your security, you may want to insure the package through your  
shipping courier. Eagle does not assume responsibility for goods lost or  
damaged in transit.  
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Visit our web site:  
www.eaglesonar.com  
Eagle Pub. 988-0143-781  
Printed in USA 092304  
Copyright © 2004  
All Rights Reserved  
LEI-Eagle  
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