Eagle FishStrike 2000, SeaChamp 2000 CDF INSTALLATION AND OPERATION INSTRUCTIONS

0 (0)

Pub. 988-0143-811

www.eaglesonar.com

FishStrike®2000 &

SeaChamp®2000 CDF

Fish-finding Sonars & Mapping GPS

Installation and Operation

Instructions

No part of this manual may be copied, reproduced, republished, transmitted or distributed for any purpose, without prior written consent of Eagle Electronics. Any unauthorized commercial distribution of this manual is strictly prohibited.

Eagle® is a registered trademark of LEI. MapCreate , FreedomMaps , IMS and NauticPaths are trademarks of LEI. Fishing Hot Spots is

a registered trademark of Fishing Hot Spots Inc. Navionics is a registered trademark of Navionics, Inc.

Zenrin Co. Ltd.

Eagle Electronics may find it necessary to change or end our policies, regulations, and special offers at any time. We reserve the right to do so without notice. All features and specifications subject to change without notice. All screens in this manual are simulated. On the cover: SeaChamp 2000 CDF shown. Other models covered in the manual are similar.

For free owner's manuals and the most current information on this product, its operation and accessories,

visit our web site:

www.eaglesonar.com

Eagle Electronics

P.O. Box 669

Catoosa, OK USA 74015

Printed in USA.

Table of Contents
Section 1: Read Me First!........................................................	1
Capabilities and Specifications:
FishStrike 2000C & SeaChamp 2000C DF ....................................	3
How Your Sonar Works ................................................................	5
How Your GPS Works ..................................................................	5
Introduction to GPS and WAAS...................................................	7
How to use this manual................................................................	9
Section 2: Installation & Accessories..................................	11
Preparations................................................................................	11
Transducer Installation..............................................................	11
Recommended Tools and supplies..........................................	12
Single-frequency transom installations .............................	12
Dual-frequency transom installations ...............................	12
Single-frequency trolling motor installations....................	12
Shoot-through hull installations ........................................	12
Selecting a Transducer Location............................................	12
How low should you go?..........................................................	14
Shoot-thru-hull vs. Transom Mounting .................................	15
Transom Transducer Assembly And Mounting.....................	15
Shoot-thru-hull Installation ...................................................	25
Speed/Temperature Sensors.......................................................	27
Optional Speed Sensor Installation ...........................................	28
GPS Antenna/Receiver Module Installation..............................	30
NMEA 0183 Cable Connections .................................................	30
Power Connections......................................................................	31
Mounting the Unit: Bracket or In-Dash ....................................	33
MMC or SD Memory Card Installation .....................................	36
Other Accessories........................................................................	37
MMC and MapCreate .............................................................	37
Section 3: Basic Sonar Operation.......................................	39
Keyboard .....................................................................................	39
Power/lights on and off ...............................................................	40
Main Menu ..................................................................................	41
Pages ...........................................................................................	42
Satellite Status Page ..............................................................	42
Navigation Page......................................................................	43
Map Page.................................................................................	43
Sonar Page ..............................................................................	44
Sonar Quick Reference ..........................................................	47
Sonar Operations ........................................................................	48
Fish Symbols vs. Full Sonar Chart ........................................	50
Other Free Training Aids .......................................................	50
i

Section 4: Sonar Options & Other Features.....................	53
ASP (Advanced Signal Processing) .....................................	53
Alarms .........................................................................................	54
Depth Alarms ..........................................................................	54
Zone Alarm..............................................................................	55
Fish Alarm...............................................................................	55
Calibrate Speed...........................................................................	56
Chart Speed.................................................................................	56
ColorLine ..................................................................................	57
Depth Cursor...............................................................................	59
Depth Range - Automatic ...........................................................	60
Depth Range - Manual ...............................................................	61
FasTrack ..................................................................................	61
Fish I.D. (Fish Symbols & Depths) .........................................	62
FishTrack .................................................................................	63
Frequency (Dual-Frequency Transducers only)........................	64
HyperScroll ..............................................................................	65
Log Sonar Chart Data ................................................................	65
Noise Rejection............................................................................	66
Overlay Data...............................................................................	66
Overlay Data Style..................................................................	69
Ping Speed & HyperScroll .......................................................	70
Reset Options ..............................................................................	72
Reset Water Distance .................................................................	72
Set Keel Offset ............................................................................	72
Sensitivity & Auto Sensitivity....................................................	74
Sonar Chart Mode.......................................................................	75
Sonar Page & Sonar Chart Display Options .............................	76
Full Sonar Chart .....................................................................	76
Split Zoom Sonar Chart..........................................................	77
Split Frequency Sonar Chart .................................................	77
Digital Data Display ...............................................................	78
Customize Page Displays ...........................................................	79
Map With Sonar Split Screen.................................................	80
Sonar Simulator..........................................................................	80
Stop Chart ...................................................................................	82
Surface Clarity............................................................................	82
Zoom & Zoom Bar .......................................................................	83
Zoom Pan.....................................................................................	84
Section 5: Sonar Troubleshooting .......................................	85
Section 6: Basic GPS Operations .........................................	89
Keyboard .....................................................................................	89
Power/lights on and off ...............................................................	90
ii

Main Menu ..................................................................................	91
Pages ...........................................................................................	92
Sonar Page ..............................................................................	92
Satellite Status Page ..............................................................	92
Navigation Page......................................................................	94
Map Page.................................................................................	95
GPS Quick Reference................................................................	100
Find Your Current Position......................................................	101
Moving Around the Map: Zoom & Cursor Arrow Keys...........	101
Selecting Any Map Item with the Cursor................................	102
Searching...................................................................................	102
Set a Waypoint..........................................................................	104
Navigate To a Waypoint ...........................................................	106
Set Man Overboard (MOB) Waypoint......................................	107
Navigate Back to MOB Waypoint ............................................	107
Navigate to Cursor Position on Map........................................	108
Navigate to a Point of Interest.................................................	109
Creating and Saving a Trail.....................................................	110
Displaying a Saved Trail ..........................................................	111
Navigating Trails......................................................................	112
Visual Trailing ......................................................................	112
Navigate a Trail ....................................................................	112
Transfer Custom Maps and GPS Data Files ...........................	114
Custom Maps ........................................................................	114
GPS Data files:......................................................................	115
Cancel Navigation.....................................................................	116
Section 7: Advanced GPS Operations...............................	117
Find Distance from Current Position ......................................	117
Find Distance from Point to Point ...........................................	117
Icons...........................................................................................	117
Create Icon on Map...............................................................	118
Create Icon at Current Position ...........................................	118
Delete an Icon .......................................................................	118
Navigate to an Icon...............................................................	119
Routes........................................................................................	119
Create and Save a Route ......................................................	120
Delete a Route.......................................................................	122
Edit a Route ..........................................................................	122
Navigate a Route...................................................................	123
Navigate a Route in Reverse ................................................	124
Trails .........................................................................................	124
Delete a Trail ........................................................................	124
Edit a Trail Name .................................................................	124
iii

Edit a Trail Color ..................................................................	125
Edit a Trail Pattern ..............................................................	125
Utilities......................................................................................	126
Alarm Clock...........................................................................	126
Sun/Moon Rise & Set Calculator..........................................	126
Trip Calculator......................................................................	126
Trip Down Timer...................................................................	126
Trip Up Timer .......................................................................	126
Waypoints..................................................................................	126
Delete a Waypoint.................................................................	126
Edit a Waypoint (Name, Symbol, Position) .........................	126
Selecting a Waypoint ............................................................	127
Set a Waypoint by Average Position ....................................	127
Set a Waypoint by Projecting a Position..............................	128
Section 8 System & GPS Setup Options ...........................	129
Alarms .......................................................................................	129
Auto Satellite Search................................................................	130
Check MMC Files and Storage Space......................................	130
Communications Port Configuration .......................................	131
Configure NMEA ......................................................................	131
Coordinate System Selection....................................................	132
Map Fix .....................................................................................	133
Customize Page Displays .........................................................	134
GPS Simulator ..........................................................................	135
Simulating Trail or Route Navigation .................................	136
Hide GPS Features ...................................................................	137
Initialize GPS............................................................................	137
Map Auto Zoom.........................................................................	137
Map Data...................................................................................	138
Earth Map Detail ..................................................................	138
Pop-up Map Info....................................................................	138
Draw Map Boundaries..........................................................	138
Fill Water with White...........................................................	139
Trackline Extension..............................................................	139
Presentation Mode ................................................................	139
Safety Contour ......................................................................	139
Map Overlays (Range Rings; Lat/Long Grid) ......................	139
Map Datum Selection ...............................................................	140
Map Detail Category Selection.................................................	141
Map Orientation .......................................................................	141
Navionics Charts.....................................................................	142
Display a Navionics chart:....................................................	142
Port Information ...................................................................	143
iv

Tidal Current Information ...................................................	144
Tide Information ...................................................................	146
Overlay Data.............................................................................	148
Overlay Data Style ...................................................................	151
Pop-up Help...............................................................................	154
Reset Options ............................................................................	155
Screen Contrast and Brightness ..............................................	155
Set Language ............................................................................	156
Set Local Time ..........................................................................	157
Show WAAS Alarm...................................................................	158
Software Version Information..................................................	158
Sounds and Alarm Sound Styles..............................................	158
Track Smoothing.......................................................................	159
Trail Options .............................................................................	160
Delete All Trails ....................................................................	160
Update Trail Option..............................................................	160
Update Trail Criteria (Auto, Time, Distance) .................	161
Trail Update Rate (Time, Distance).................................	161
Specific Trail Options........................................................	161
Delete Trail ...........................................................................	161
New Trail...............................................................................	162
Units of Measure.......................................................................	162
Sec. 9: Searching...................................................................	165
Find Addresses..........................................................................	165
Find Any Item Selected by Map Cursor ..................................	168
Find Interstate Highway Exits ................................................	168
Find Map Places or Points of Interest (POI) ...........................	171
Find Streets or Intersections....................................................	173
Find Waypoints.........................................................................	177
Sec. 10: Supplemental Material Datums ..........................	179

WARNING!

A CAREFUL NAVIGATOR NEVER RELIES ON ONLY ONE METHOD TO OBTAIN POSITION INFORMATION.

CAUTION

When showing navigation data to a position (waypoint), a GPS unit will show the shortest, most direct path to the waypoint. It provides navigation data to the waypoint regardless of obstructions. Therefore, the prudent navigator will not only take advantage of all available navigation tools when traveling to a waypoint, but will also visually check to make sure a clear, safe path to the waypoint is always available.

WARNING!

When a GPS unit is used in a vehicle, the vehicle operator is solely responsible for operating the vehicle in a safe manner. Vehicle operators must maintain full surveillance of all pertinent driving, boating or flying conditions at all times. An accident or collision resulting in damage to property, personal injury or death could occur if the operator of a GPS-equipped vehicle fails to pay full attention to travel conditions and vehicle operation while the vehicle is in motion.

Section 1:

Read Me First!

How this manual can get you out on the road, fast!

Welcome to the exciting world of digital sonar and GPS! We know you're anxious to begin navigating and finding fish, but we have a favor to ask. Before you grab the unit and begin installing it, please give us a moment or two to explain how our manual can help you get the best performance from your combination fish finder and GPS receiver.

First, we want to thank you for buying an Eagle sonar/GPS unit. Whether you're a first time user or a professional fisherman, you'll discover that your unit is easy to use, yet capable of handling demanding navigation and sonar tasks. When you team your unit with our custom mapping software MapCreate 6, you have an incredible combination. With a full recording capability and remarkable resolution, you won't find another combination sonar and GPS unit with this much power and this many features for this price!

Our goal for this book is to get you on the water fast, with a minimum of fuss. Like you, we'd rather spend more time boating or fishing and less time reading the manual!

So, we designed our book so you don't have to read the whole thing from front to back to find the information you want. At the start (or end) of each segment, we'll tell you what content is coming up next. If it's a concept you're already familiar with, we'll show you how and where to skip ahead for the next important topic. We've also made it easy to look up any tips you may need from time to time. Here's how:

The manual is organized into 10 sections. The first section is an introduction to the FishStrike 2000c and SeaChamp 2000C DF sonar/ GPS units. It tells you the basics you need to know before you can make the unit look around and tell you where you are, or look below the surface to find some fish.

Section 2 will help you install your unit, the transducer and the GPS antenna module. We'll also show you how to install the MultiMedia Card (MMC) and give you some information on available accessories.

Section 3 covers Basic Sonar Operation. It will show you how easy it is to run your sonar, right out of the box. This section features a one-page Sonar Quick Reference. (If you've already jumped ahead and figured out how to install the unit yourself, and you just can't wait any longer, turn to the Quick Reference on page 47 and head for the water with your unit!)

After you've gained some experience with your sonar, you'll want to check out Section 4, which discusses advanced Sonar Options and Other Features.

When you come to a sonar menu command on the unit's screen, you can look it up in the manual by skimming over the table of contents, flipping through Section 3, or scanning through the sonar options in Section 4.

If you're having difficulty with your sonar, you can find an answer to the most common problems in Section 5, Sonar Troubleshooting.

The manual switches from sonar to navigation in Section 6, which introduces you to Basic GPS Operations. This section features a onepage GPS Quick Reference on page 100

Section 6 contains short, easy-to-scan GPS lessons that follow one another in chronological order. They're all you'll need to know to find your way on the water quickly. After you've learned the basics (or if you already have some GPS experience), you may want to try out some of the unit's many advanced navigation features. That brings us to Section 7, Advanced GPS Operations. This section contains the rest of the unit's GPS command functions, organized in alphabetical order.

When you come to a GPS menu command on the screen, you can look it up in the manual by skimming over the table of contents, flipping through Section 6, or scanning through the command portion of Section 7.

This unit is ready to use right out of the box, but you can fine tune and customize its operation with dozens of options. Since sonar is the unit's key feature, we put the main sonar options in Section 4. Some options, such as screen brightness settings, affect both sonar and GPS operations. We describe how to use those common options along with GPS options in Section 8, System Setup and GPS Setup Options. Section 8 is organized in alphabetical order.

In Section 9, we go into more detail on one of the unit's most remarkable GPS capabilities — Searching. We'll introduce a search example in the Basic GPS Operation section, but there are so many map items you can search for, we had to give this function its own section in the manual! For example, did you know your unit can look up business phone numbers, like a virtual Yellow Pages? We’ll show you how in Section 9.

Finally, in Section 10, we offer Supplemental Material, including a list of the GPS datums, warranties and customer service information.

Now, if you're into the fine details, glance over the next segment on specifications to see how much sonar and GPS power your unit contains. It's important to us (and our power users), but, if you don't care how many watts of power the unit has, or how many waypoints it can store, skip ahead to important information on how sonar works, on page 5. (Background on GPS begins on page 5.)

Capabilities and Specifications: FishStrike 2000C &

SeaChamp 2000C DF

	General
Display:............................	6.4" VGA color LCD".
Resolution:......................	640 pixel x 480 pixel resolution.
Backlighting:..................	Fluorescent cold cathode backlit screen with
	multiple lighting levels; backlit keypad.
Input power:...................	10 to 15 volts DC.
Current drain: ...............	Sonar only: 500 ma lights off; 600 ma lights
	on. With GPS and lights on: 700 ma.
Case size:.........................	7.3" H x 9.6" W x 3.7" D (18.5 x 24.4 x 9.4
	cm); sealed and waterproof; suitable for
	saltwater use.
MMC slots: ......................	Two in waterproof compartment (SD card
	compatible).
Back-up memory: ..........	Built-in memory stores sonar records and
	GPS data for decades. User settings are
	stored when unit is turned off.
Languages:......................	10; menu languages selectable by user.
	Sonar
Frequency:......................	Depending on transducer, either 50/200 kHz
	dual-frequency (SeaChamp 2000C DF only)
	or 200 kHz single-frequency.
Transducers:....................	Skimmer transducer with built-in
	temperature sensor available. Use either a
	dual-frequency transducer with 35°/12° cone
	angles (SeaChamp 2000C DF only) or a single-
	frequency transducer with a 20° cone angle.
	Both transducers operate at speeds up to 70
	mph (61 kts).
Transmitter: ...................	Dual-frequency: 8,000 watts peak-to-
	peak/1 kW RMS (SeaChamp 2000C DF).
	Single-frequency: 3,000 watts peak-to-
	peak/375 watts RMS (FishStrike 2000C).
Sonar sounding
Depth capability:...........	Dual-frequency: 3,000 feet (915 meters).
	Single-frequency: 1,000 feet (305 meters).
	Actual capability depends on transducer
	configuration and installation, bottom
	composition and water conditions.
	3

Depth display:................	Continuous display.
Graph recording: ..........	Up to 1 GB on one MMC (or SD) card
Audible alarms: .............	Deep/shallow/fish/zone.
Automatic ranging:.......	Yes, with instant screen updates.
Auto bottom track:........	Yes
Zoom bottom track: ......	Yes.
Split-screen zoom:.........	Yes.
Surface water temp: .....	Yes, built into transducer.
Speed/distance log: .......	Yes, with optional speed sensor.
	GPS
Receiver/antenna:.........	External; EGC 12 parallel channel
	GPS/WAAS.
Recording:........................	MMC & SD memory cards for recording GPS
	trip details and displaying charts or custom
	maps.
Background map:..........	Built-in custom, detailed Eagle map.
	Contains: enhanced detail of continental U.S.
	and Hawaii. Includes more than 60,000 nav
	aids and 10,000 wrecks/obstructions in
	coastal and Great Lakes waters. Metro
	areas, selected major streets/highways and
	interstate exit services details included.
Custom mapping: ..........	MapCreate 6 software optional; optional
	plug and play LEI FreedomMaps offer the
	same high-detail without the computer work
	of MapCreate. Other plug and play mapping
	options include Fishing Hot Spots Elite , LEI
	NauticPaths charts and Navionics charts.
Mapping memory: .........	Up to 1 GB on one MMC (or SD) card.
Position updates: ..........	Every second.
Position points: .............	1,000 waypoints; 1,000 event marker icons.
Audible alarms: .............	Arrival/off-course/anchor.
Symbols for waypoints
and event marker:.........	42.
Routes:.............................	100; up to 100 waypoints per route.
Plot Trails:......................	10 savable; up to 9,999 points per trail.
Zoom range:....................	37 ranges; 0.05 to 4,000 miles.
NOTE:

The memory capacities refer only to the unit's on-board memory. The amount of GPS or sonar data you can record and save for recall later is only limited by the number of MMC cards you have.

NOTICE!

The storage and operation temperature range for your unit is from - 4 degrees to +167 degrees Fahrenheit (-20 degrees to +75 degrees Celsius). Extended storage or operation in temperatures higher or lower than specified will damage the liquid crystal display in your unit. This type of damage is not covered by the warranty. For more information, contact the factory's Customer Service Department. Phone numbers are listed on the last page.

How Your Sonar Works

Sonar has been around since the 1940s, so if you already know how it works, skip down to read about the relatively new technology of GPS. 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 technology developed during World War II for tracking enemy submarines. A sonar consists of a transmitter, transducer, receiver and display. Here’s an explanation of how it finds the bottom and the fish.

The transmitter emits an electrical impulse, which the transducer converts 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 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.

Your sonar unit can record a log of the sonar signals that scroll across the screen and save them to the MMC memory card. (These recordings are also called sonar charts or sonar graphs.) You can replay this sonar log in the unit using the Sonar Simulator function, or play it back on a personal computer using our free Sonar Viewer. The viewer is available for download from the Eagle web site, www.eaglesonar.com.

You can save several different sonar log files, erase 'em and record new ones, over and over again. The size of your sonar recordings are only limited by the free space available on your MMC.

How Your GPS Works

You'll navigate faster and easier if you understand how this unit scans the sky to tell you where you are on the earth — and, where you're going. (But if you already have a working understanding of GPS

receivers and the GPS navigation system, skip on ahead to Section 2, Installation & Accessories on page 11. If you're new to GPS, read on, and you can later impress your friends with your new-found knowledge.)

First, think of your unit as a small but powerful computer. (But don't worry — we made the series easy to use, so you don't need to be a computer expert to find your way!) The unit includes a keypad and a screen with menus so you can tell it what to do. The screen also lets the unit show your location on a moving map, as well as point the way to your destination.

This gimbal-mounted unit uses an external antenna/receiver module, which makes the whole system work something like your car radio. But instead of your favorite dance tunes, this receiver tunes in to a couple of dozen GPS satellites circling the earth. (It will also listen in to the WAAS satellites in orbit, but more about that in the upcoming segment introducing you to GPS and WAAS.)

Your unit listens to signals from as many satellites as it can "see" above the horizon, eliminates the weakest signals, then computes its location in relation to those satellites. Once it figures its latitude and longitude, the unit plots that position on the moving map shown on the screen. The whole process takes place several times a second!

The performance doesn't stop there. Stored in the permanent memory of every unit is a basic background map of the entire world. We lock it in here at the factory — you can't change or erase this map.

The background map is suitable for many navigation chores, but for maximum accuracy and much more detail, you need our optional mapmaking software, MapCreate 6. Some unit features — such as searching for businesses and addresses — won't work without a custom MapCreate map. There is so much detail in our background map (and even more in MapCreate) that we'll describe its contents and differences in Section 6, Basic GPS Operations, on page 89.

Another portion of the unit's onboard memory is devoted to recording GPS navigation information, which includes waypoints, event marker icons, trails and routes. This lets you look back the way you came. Think of this data storage like the hard drive memory in a computer or a tape in a cassette tape recorder. You can save several different GPS data files, erase 'em and record new ones, over and over again. Like any computer file, these GPS Data Files (file format *.usr) can be shared between other Eagle GPS or sonar/GPS units and even personal computers.

Your unit has one more thing in common with a personal computer. Just as computers have a floppy disk drive for storing and exchanging

files, this unit has a slot for an MMC (MultiMedia Card) or SDC (Secure Digital card) flash memory card. These solid-state memory devices are about the size of a postage stamp, but can hold data ranging from 8 MB to 1 GB in size. (Compare that to a floppy disk's 1.44 MB capacity!) The unit uses all that MMC space for two key GPS purposes. (The MMC is also used to record sonar logs. See page 5

First, you can backup your onboard GPS Data Files by copying them to the MMC. Since the MMC is removable (like a floppy disk or a cassette tape), you can store these GPS Data Files on a personal computer equipped with an MMC card reader. (Or store them on a pocketful of MMCs, if you don't have a computer.) Our MapCreate mapping software can save, edit or create its own GPS Data Files, which can be copied to the MMC and then loaded from the MMC into the unit's memory. (NOTE: No matter where they come from, GPS Data Files must be loaded from the MMC into memory before the unit can use them.)

The other key GPS use for MMCs is storage of special high-detail, custom maps, which you can produce on your computer with our MapCreate software. These MapCreate custom maps contain much greater detail than the basic background map. These Custom Map Files (file format *.lcm) can also be shared between other Eagle GPS or sonar/GPS units and personal computers. (For example, the exact same MMC, custom map files and GPS data files can be used interchangeably between your gimbal-mounted unit and the hand-held iFINDER GPS receiver.)

The unit automatically reads Custom Map Files directly from the MMC or SD card. To use a custom map, all you need to do is slide an MMC containing a map into the unit.

Introduction to GPS and WAAS

Well, now you know the basics of how the unit does its work. You might be ready to jump ahead to Section 2, Installation & Accessories, on page 11, so you can mount your unit and plug in the power. Or you might want to see how our text formatting makes the manual tutorials easy to skim. If that's the case, move on to "How to Use This Manual" on page 9. But, if you want to understand the current state of satellite navigation, look over this segment describing how GPS and its new companion WAAS work together to get you where you're going.

The Global Positioning System (GPS) was launched July 17, 1995 by the United States Department of Defense. It was designed as a 24- hour-a-day, 365-days-a-year, all weather global navigation system for the armed forces of the U.S. and its allies. Civilian use was also available, but it was less accurate because the military scrambled the signal somewhat, using a process called Selective Availability (SA.)

GPS proved so useful for civilian navigation that the federal government discontinued SA on May 2, 2000, after the military developed other methods to deny GPS service to enemy forces. Reliable accuracy for civilian users jumped from 100 meters (330 feet) under SA to the present level of 10 to 20 meters (about 30 to 60 feet.)

Twenty-four satellites orbit 10,900 nautical miles above the Earth, passing overhead twice daily. A series of ground stations (with precisely surveyed locations) controls the satellites and monitors their exact locations in the sky. Each satellite broadcasts a low-power signal that identifies the satellite and its position above the earth. Three of these satellites are spares, unused until needed. The rest virtually guarantee at least four satellites are in view nearly anywhere on Earth at all times.

A minimum of three satellites are required to determine a 2D fix.

The system requires signal reception from three satellites in order to determine a position. This is called a 2D fix. It takes four satellites to determine both position and elevation (your height above sea level — also called altitude). This is called a 3D fix.

Remember, the unit must have a clear view of the satellites in order to receive their signals. Unlike radio or television signals, GPS works at very high frequencies. These signals can be easily blocked by trees, buildings, an automobile roof and even your body.

Like most GPS receivers, this unit doesn’t have a compass or any other navigation aid built inside. It relies solely on the signals from the satellites to calculate a position. Speed, direction of travel, and distance all are calculated from position information. Therefore, in order for the unit to determine direction of travel, you must be moving and the faster, the better. This is not to say that it won’t work at walking or trolling speeds — it will. There will simply be more "wandering" of the data shown on the display.

GPS is plenty accurate for route navigation, but the U.S. Federal Aviation Administration has special needs for aircraft traffic control that go beyond basic GPS. The FAA has a plan under way to boost GPS performance even further with its Wide Area Augmentation System, or WAAS. This GPS add-on will include a time control element that will help airliners fly closer together while avoiding collisions. In addition to carefully spacing airplanes along travel corridors, WAAS will eventually make instrument landings and takeoffs more accurate as it replaces existing aviation navigation systems.

Non-aviators can use WAAS signals to make their GPS navigation even more accurate. Your unit receives both GPS and WAAS signals. WAAS, however, has some limits you should know about.

First, the U.S. government has not completed construction of the WAAS system, so it is not yet fully operational. The ground stations are in place, but only a few of the needed WAAS satellites have been launched.

WAAS can boost the accuracy of land GPS navigation, but the system is designed for aircraft. The satellites are in a fixed orbit around the Equator, so they appear very low in the sky to someone on the ground in North America. Aircraft and vessels on open water can get consistently good WAAS reception, but terrain, foliage or even large man-made structures frequently block the WAAS signal from ground receivers.

You'll find that using your GPS receiver is both easy and amazingly accurate. It’s easily the most accurate method of electronic navigation available to the general public today. But remember this receiver is only a tool. Always have another method of navigation available, such as a map or chart and a compass.

Also remember this unit will always show navigation information in the shortest line from your present position to a waypoint, regardless of terrain! It only calculates position, it can’t know what’s between you and your destination. It’s up to you to safely navigate around obstacles, no matter how you’re using this product.

How to use this manual: typographical conventions

Many instructions are listed as numbered steps. The keypad and arrow "keystrokes" appear as boldface type. 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 following paragraphs explain how to interpret the text formatting for those commands and other instructions:

Arrow Keys

The arrow keys control the movement of dotted cross-hair lines on your mapping screen called the cursor. The arrow keys also 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, up arrow, left arrow and right 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. For example, the "Enter/Icons" key is shown as ENT and the "Menu" 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: ROUTE PLANNING. 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 trail name.

Instructions = Menu Sequences

Most functions you perform with this unit are described as a sequence of key strokes and selecting menu commands. We've written them in a condensed manner for quick and easy reading.

For example, instructions for navigating a trail would look like this:

1.From the Map Page, press MENU|MENU|↓ to MY TRAILS|ENT.

2.Press ↓ to Trail 1|ENT|→|↓ to NAVIGATE|ENT.

3.You are asked to wait while it converts the trail into a route.

4.The wait message disappears and the unit begins showing navigation information along the trail. Now, begin moving and follow your unit's directions.

Translated into complete English, step 1 above means: "Start on the Map Page. Press the Menu key twice.

Next, repeatedly press (or press and hold) the down arrow key to scroll down the menu and select (highlight) the My Trails menu command. Finally, press the Enter key."

Step 2 means: "Press the down arrow key repeatedly to scroll to the trail named Trail 1, and press Enter. Next, press the right arrow key and then the down arrow key to highlight the Navigate command, then press Enter."

Section 2:

Installation & Accessories

Preparations

You can install the sonar and GPS systems in some other order if you prefer, but we recommend this installation sequence:

CAUTION:

You should read over this entire installation section before drilling any holes in your vehicle or vessel!

1.Determine the approximate location for the sonar/GPS unit, so you can plan how and where to route the cables for the antenna, transducer and power. This will help you make sure you have enough cable length for the desired configuration.

2.Determine the approximate location for the transducer and its cable route.

3.Determine the approximate location for the GPS antenna module and its cable route.

4.Determine the location of your battery or other power connection, along with the power cable route.

5.Install the transducer and route the transducer cable to the sonar/GPS unit.

6.Install the GPS antenna and route the antenna cable to the sonar/GPS unit.

7.Install the power cable and route it to the sonar/GPS unit.

8.Connect the cables to the unit and mount the unit on the bracket.

Transducer Installation

These instructions will help you install your Skimmer transducer on a transom, on a trolling motor or inside a hull. These instructions cover both singleand dual-frequency Skimmer transducers. Please read all instructions before proceeding with any installation.

The smaller single-frequency Skimmers typically use a one-piece, stainless steel mounting bracket. The larger dual-frequency Skimmers typically use a two-piece, plastic mounting bracket. The trolling motor mount uses a one-piece plastic bracket with an adjustable strap.

These are all "kick-up" mounting brackets. They help prevent damage if the transducer strikes an object while the boat is moving. If the transducer does "kick-up," the bracket can easily be pushed back into place without tools.

Read these instructions carefully before attempting the installation. Determine which of the mounting positions is right for your boat. Use extreme care if mounting the transducer inside the hull, because once the epoxy is applied and it is set into position, the transducer cannot be removed. Remember, transducer 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.) A transom mount requires use of a high quality, marine grade aboveor below-waterline sealing compound.

NOTE

The following installation types also call for these recommended tools and required supplies (supplies are not included):

Single-frequency transom installations

Tools include: two adjustable wrenches, drill, #29 (0.136") drill bit, flathead screwdriver. Supplies: high quality, marine grade aboveor belowwaterline sealant/adhesive compound.

Dual-frequency transom installations

Tools: two adjustable wrenches, drill, #20 (0.161") drill bit, flat-head screwdriver. Supplies: four, 1" long, #12 stainless steel slotted wood screws, high quality, marine grade aboveor below-waterline sealant/adhesive compound.

Single-frequency 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.

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 be displayed on the sonar's screen. Use caution when routing the transducer cable around these wires.

CAUTION: Clamp the transducer cable to transom near the transducer. This will help prevent the transducer from entering the boat if it is knocked off at high speed.

Good location

		Poor location
	Good
	location	Good location
	Poor angle	Good location
	Poor angle

Good and poor transducer locations.

How low should you go?

For most situations, you should install your Skimmer transducer so its centerline is level with the bottom of the boat hull. This will usually give you the best combination of smooth water flow and protection from bangs and bumps.

Transom

Transducer centerline

Hull bottom

Align transducer centerline with hull bottom.

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 frequently lose bottom signal lock while running at high speed, the transducer 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 installation (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 operation and good to excellent depth capability. There is no possibility of transducer damage from floating objects, as there is with a transommounted 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.) 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 these transducers 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.

The following instructions sometimes vary depending on the mounting bracket that came with your transducer. Single-frequency Skimmers come with a one-piece stainless steel bracket, while dual-frequency Skimmers come with a two-piece plastic mounting bracket. Use the set of instructions that fits your model.

1.Assembling the bracket.

A. One-piece 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.

B. Two-piece bracket: Locate the four plastic ratchets in the transducer's hardware package. Press two ratchets into the sides of the plastic bracket and two on either side of the transducer as shown in the following illustrations. Notice there are letters molded into each ratchet.

Place the ratchets into the bracket with the letter "A" aligned with the alignment mark molded into the bracket. Place the ratchets onto the transducer with the letter "A" aligned with the 12 o'clock position on the transducer stem. These positions set the transducer's coarse angle adjustment for a 14° transom. Most outboard and stern-drive transoms have a 14° angle.

Alignment letters

Alignment

positions

Transducer

Transducer bracket

Insert and align ratchets.

	Transducer	Transducer
	bracket	Transducer
	bracket

Ratchet	Ratchet

Add ratchets to bracket and transducer.

2.Aligning the transducer on the transom.

A. One-piece bracket: Slide the transducer between the two ratchets. Temporarily slide the bolt though the transducer assembly and hold it against the transom. Looking at the transducer from the side, check to see if it will adjust so that its face is parallel to the ground. 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 parallel with the ground. If you can, then go to step 3A. If it doesn't, repeat step 2A, 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.

B. Two-piece bracket: Assemble the transducer and bracket as shown in the following figure. Temporarily slide the bolt though the transducer assembly, but don't tighten the nut at this time. Hold the assembled transducer and bracket against the transom. Looking at the transducer from the side, check to see if it will adjust so that its face is parallel to the ground. If it does, then the "A" positions are correct for your hull.

If the transducer's face isn't parallel with the ground, remove and disassemble the transducer and ratchets. Place the ratchets into the bracket holes with the letter "B" aligned with the bracket alignment mark. Place them on the transducer aligned with the 12 o'clock position on the transducer stem.

Reassemble the transducer and bracket and place them against the transom. Again, check to see if you can move the transducer so it's parallel with the ground. If you can, then go to step 3B. If it doesn't, repeat step 2B, but use a different alignment letter until you can place the transducer on the transom correctly.

Lock washer

Bolt

Nut

Flat washer

Assemble transducer and bracket.

3. Assembling the transducer.

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

	Metal
Nut	washer
Rubber	Metal washer
washers	Metal washer
	Bolt

Assemble transducer and bracket.

B. Two-piece bracket: Once you determine the correct position for the ratchets, assemble the transducer as shown in the figure in step 2B. Don't tighten the lock nut at this time.

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. For the one-piece bracket, use the #29 bit (for the #10 screws). For the two-piece bracket, use the #20 bit (for the #12 screws).

Transom

Position transducer mount on transom and mark mounting holes. Side view shown (left) and seen from above (right).

5.Attaching transducer to transom.

A. One-piece bracket: 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.

For single-frequency Skimmer, route cable over bolt and through bracket. Side view shown (left) and seen from above (right).

Both bracket types: 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 caulking 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

Deep-"vee" hull

Align transducer centerline with hull bottom and attach transducer to transom. Rear view of dual-frequency Skimmer shown.

6. Route the transducer cable through or over the transom to the sonar unit. Make sure to leave some slack in the cable at the transducer. If possible, route the transducer cable away from other wiring on the boat. Electrical noise from the engine's wiring, bilge pumps, VHF radio wires, 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 entering 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 be 5/8".

CAUTION:

If you drill a hole in the transom for the cable, make sure it is located above the waterline. After installation, be sure to seal the hole with the same marine grade aboveor below-waterline sealant 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. Be careful not to install the transducer bracket below the bottom of the hull!

TROLLING MOTOR BRACKET INSTALLATION (single-frequency only)

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.)

TMB-S bracket

Internal tooth washer

Bolt

Nut

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. Position the transducer to aim straight down when the motor is in the water. 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.

	Partial fish arches
Transducer aimed	Transducer aimed
too far back	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 transducer 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 remove any oil film. Oil and dirt on the face will reduce the sensitivity or may even prevent operation.

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

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