skip ahead to important information on how sonar works, on page 5. (Background on GPS begins on page 6.)
Capabilities and Specifications: SeaChamp 1000C DF

General

FishStrike
Display:.. High-brightness LCD; programmable to viewing preference, 5.7" diagonal. Resolution:.. 320 pixel x 240 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 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 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-topeak/1 kW RMS. Single-frequency: 3,000 watts peak-topeak/375 watts RMS. Sonar sounding Depth capability:. Dual-frequency: 3,000 feet (915 meters). Single-frequency: 1,000 feet (305 meters). Actual capability depends on transducer 3
configuration and installation, bottom composition and water conditions. 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 IMS Fishing Hot Spots, 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. 4

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. Heres 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. 5

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 13, 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 10. 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. 7
The Global Positioning System (GPS) was launched July 17, 1995 by the United States Department of Defense. It was designed as a 24hour-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, even your body.
Like most GPS receivers, this unit doesnt 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 are all 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 wont 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. Its 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 cant know whats between you and your destination. Its up to you to safely navigate around obstacles, no matter how youre using this product. 9

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 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 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 16
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. 17

Transparency

Use the transparency menu to adjust the transparency of menu windows. A high transparency allows you to continue monitoring the screen's display while adjusting feature settings, though the text of the menus may fade until it is unreadable. A low transparency will usually make menu text easier to read, at the cost of watching your display. Experiment with this feature until you find the right level of transparency 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.

Zoom & Zoom Bar

"Zooming in" is a common, fast and easy method used to enlarge small detail, fish signals and the bottom with its associated structure. This unit lets you zoom in quickly and easily by pressing the Zoom In key, ZIN. Pressing ZIN once doubles the size (2X) of all echoes on the screen. Pressing it again quadruples the size of the echoes (4X). The zoom bar on the far right side of the screen shows which echoes will be displayed on the screen when the ZIN key is pressed. For example, pressing the ZIN key once will enable a 2X zoom that will show all echoes that are between the top and bottom of the 2X zoom bar. Pressing the key again will give a 4X zoom and only the echoes between the top and bottom of the 4X bar will show on the screen. Press the Zoom Out key, ZOUT, to return the display to the normal mode.
Sonar page zoomed 2X (left). The same view zoomed 4X (right).

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 63.) and turn on 2X or 4X Zoom. Then, simply press or to pan up and down the water column.

Section 5:

Sonar 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 certain the power cable is wired properly. The red wire connects to the positive battery terminal, black to negative or ground. 3. Check the fuse. 4. Measure the battery voltage at the 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 battery needs charging. Unit operates only in demo mode: The transducer or antenna module have not yet been connected or have been disconnected. To leave demo mode, make sure that either the transducer or the antenna 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 transducer 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 certain both are securely plugged in to the unit. Weak bottom echo, digital readings erratic, or no fish signals: 1. Make certain the transducer is pointing straight down. Clean the face of the transducer. Oil, dirt and fuel can cause a film to form on the transducer, reducing its effectiveness. If the transducer is mounted inside the hull, be sure it is shooting through only one layer of fiberglass and that it is securely bonded to the hull. Do NOT use RTV silicone rubber adhesive or Marine-Tex epoxy. 2. Electrical noise from the boat's motor can interfere with the sonar. 89

The map is zoomed to 15 miles. The Over Zoomed notice in the top left corner means you have reached the maps detail limits for the area. Zooming in any closer will reveal no more map details because a custom map has not been loaded on the MMC.
If you're using only the factory-loaded background map, the maximum zoom range is 20 miles. You can continue to zoom in closer, but the map will simply be enlarged without revealing more map content (except for a few major city streets.) Load your own high-detail custom map made with MapCreate, and you can zoom in to 0.05 miles.
Map Pages with high-detail MapCreate map. Arterial streets appear at the 6-mile zoom range, with a few Point of Interest icons visible (left). Numerous Points of Interest dots become visible at the 3-mile range, along with minor streets (center). At the 0.6-mile zoom, you can see an interstate highway with an exit, major and minor streets as well as Point of Interest icons (right).
Background map vs. MapCreate map content The background map includes: low-detail maps of the whole world (containing cities, major lakes, major rivers, political boundaries); and medium-detail maps of the United States. 100
The medium-detail U.S. maps contain: all incorporated cities; shaded metropolitan areas; county boundaries; shaded public lands (such as national forests and parks); some major city streets; Interstate, U.S. and state highways; Interstate highway exits and exit services information; large- and medium-sized lakes and streams; and more than 60,000 navigation aids with 10,000 wrecks and obstructions in U.S. coastal and Great Lakes waters MapCreate custom maps include massive amounts of information not found in the background map. MapCreate contains: Points of Interest database, all the minor roads and streets, all the landmark features (such as summits, schools, radio towers, etc.); more rivers, streams, smaller lakes and ponds and their names. What's more important is the large scale map detail that allows your GPS unit to show a higher level of position accuracy. For example, the background map would show you the general outline and approximate shape of a coastline or water body, but the higher detail in MapCreate shows the shoreline completely and accurately. Many smaller islands would not be included in the background map, but are in MapCreate.

Navigate to cursor. In this example, the town of Oologah, Oklahoma has been selected.
3. Press MENU|ENT and the unit will begin navigating to the cursor location. The Map Page will display a red line from your current position to the cursor position. The Navigation Page displays a compass rose showing navigation information to your destination. See the following examples.
The 30-mile zoom figure (left) clearly shows the red course line connecting your current position to your destination. The 30-mile zoom (right) shows current position and direction to destination on screen.
To stop navigating to the cursor, use the Cancel Navigation command: press MENU|MENU| to CANCEL NAVIGATION|ENT| to YES|ENT. The unit stops showing navigation information.
Navigate to a Point of Interest
POIs in view on the map can be located easily by using the Navigate to Cursor command above. Just use the cursor to select the POI. The other method involves searching for POIs with the Find Waypoint command, launched with the WPT key. (See the searching example earlier in this section or turn to Sec. 9, Searching, for detailed instructions on POI searches.) After you have looked up an item with the Find Waypoint command, use the to make sure the GO TO command is highlighted at the top of the screen, then press ENT. The unit begins navigating to the item. To cancel navigation, press MENU|MENU| to CANCEL NAVIGATION|ENT| to YES|ENT. The unit stops showing navigation information.
Creating and Saving a Trail
A trail, or plot trail, is a string of position points plotted by the unit as you travel. It's a travel history, a record of the path you have taken. Trails are useful for repeating a journey along the same track. They are particularly handy when you are trying to retrace your trip and go back the way you came. On the screen, trails are represented by a magenta line extending from the back of the current position arrow. The unit is set at the factory to automatically create and record a trail while it is turned on. The unit will continue recording the trail until the length reaches the maximum trail point setting. Default is 2,000, but the it can record trails up to 9,999 points long. When the point limit is reached, the unit begins recording the trail over itself. By default, the trail flashes once a second, making it easier to see against the background map. With the default auto setting, the unit creates a trail by placing a dot (trail point) on the screen every time you change directions. The methods used for creating a trail and the trail update rate can be adjusted or even turned off. See Sec. 8 for Trail Options. To preserve a trail from point A to point B, you must "turn off" the trail by making it inactive before heading to point C or even back to point A. When the current trail is set inactive, the unit automatically creates and begins recording a new trail. To Save a Trail 1. Press MENU|MENU| to MY TRAILS|ENT.

Select Icon Symbol menu (left); Boat Ramp icon on map (right). (Cursor has been moved for clarity).
Create Icon at Current Position 1. While you are traveling, press ENT and the screen shows the "Select Icon Symbol" menu. 2. Press or or or to select your icon symbol, then press ENT. The icon appears on the map. Delete an Icon You can delete all the icons at one time, delete all icons represented by a particular symbol, or delete a selected icon from the map. 1. Press MENU| to DELETE MY ICONS|ENT. 2. Press to DELETE ALL ICONS, DELETE BY SYMBOL, or DELETE FROM MAP and press ENT.

Delete icons menu.

The Delete All Icons command will ask if you are sure. Press to YES|ENT. All icons will be deleted from the map. The Delete by Symbol command will launch the Select Symbol menu. Press or or or to select the icon symbol to delete, then press ENT. A message appears saying all icons with the selected symbol have been deleted. The Delete From Map command will prompt you to move the cursor over an icon to select it. After selecting the icon, press ENT and it disappears from the map. Navigate to an Icon Use the Navigate to Cursor command, and use the cursor to select the desired icon on the map. 1. Use arrow keys to center cursor cross-hair over the icon. 2. To navigate to the selected icon location: press MENU|ENT. Follow course line on the Map Page or the compass bearing arrow on the Navigation Page.

Routes

A route is a series of waypoints, linked together in an ordered sequence to mark a course of travel. You can visualize a route as a string of beads. The beads represent waypoints and the string represents the course of travel connecting waypoint to waypoint. The course from one waypoint to the next is a leg. Routes are composed of one or more legs. The legs of all GPS routes are based on straight lines between waypoints. A route provides the automatic capability to navigate through several waypoints without having to reprogram the unit after arriving at each waypoint. Once programmed into the GPS unit, a route provides the option of navigating forward through the route waypoints or in reverse order. You can even begin navigating in the middle of a route! 125

or to change the first character, then press to the next character and repeat until the name is correct. 135
4. When your adjustments are finished, return to the last page displayed by repeatedly pressing EXIT. IMPORTANT ALARM NOTES: Anchor Alarm - The anchor alarm may be triggered even when you're sitting still. This typically happens when using small (less than 0.05 mile) anchor alarm ranges. Arrival Alarm - If you set the arrival alarm's distance to a small number and you run a route (see the Navigate Routes segment), this unit may not show navigation data to the next waypoint, once you arrive at the first one, since you may not be able to come close enough to the first waypoint to trip the arrival alarm.

Auto Satellite Search

To lock onto the satellites, the GPS receiver needs to know its current position, UTC time and date. (Elevation (altitude) is also used in the equation, but it's rarely required to determine a position.) It needs this data so that it can calculate which satellites should be in view. It then searches for only those satellites. When your GPS receiver is turned on for the first time, it doesn't know what your position or elevation (altitude) is. It does know the current UTC time and date since these were programmed into it at the factory and an internal clock keeps the time while the unit is turned off. (If the time and/or date are incorrect, you can set it using the "Set Local Time" menu.) The unit begins searching for the satellites using the above data that it acquired the last time it was turned on. This probably was at the factory. Since it's almost certain that you're not at our factory, it's probably looking for the wrong satellites. If it doesn't find the satellites it's looking for after approximately one minute, it switches to Auto Search. The receiver looks for any satellite in the sky. Due to advanced technology, the auto search time has shrunk significantly from the early days of GPS. Once the unit locks onto the satellites, it should take less than a minute to find your position the next time it's turned on, provided you haven't moved more than approximately 100 miles from the last location it was used.
Check MMC Files and Storage Space
To check MMC Files: Press MENU|MENU| to BROWSE MMC FILES|ENT. 136
Main Menu (left); MMC File Browser (right).
Communications Port Configuration
The unit has two NMEA 0183 version 2.0 compatible communication ports, or com ports for short. The Com Port Menu, which is accessed from the System Setup Menu, allows you to configure the communications ports to send or receive data to another electronic device, such as an autopilot. Com port 1 and Com port 2 can be used for NMEA.
Menus for changing Communication Port settings.
For assistance in configuring the unit to communicate with another device, consult the factory. Customer service phone numbers are in the back of this manual. Also see the entries below for Configure NMEA. To set Com Port Configuration: 1. Press MENU|MENU| to SYSTEM SETUP|ENT. 2. Press to COMMUNICATIONS PORT|ENT.

Map Datum Selection

Maps and charts are based on a survey of the area that's covered by the map or chart. These surveys are called "Datums." Maps that are created using different datums will show the same latitude/longitude in slightly different locations. All datums are named. The GPS system is based on the WGS-84 datum, which covers the entire world. Other datums may also cover the entire world, or just a small portion of it. By default, your unit uses the WGS-84 datum. It, however, can show your position using one of 191 different datums. To change the datum: 1. Press MENU|MENU| to GPS SETUP|ENT| to DATUM SELECTION|ENT. 2. Scroll or to select the desired datum, then press ENT. 3. To return to the last page displayed, press EXIT|EXIT. A list of the datums used by this unit is in the back of this manual.
GPS Setup Menu (left); Map Datum Menu (right).
Map Detail Category Selection
This menu determines which of the mapping features are shown on the screen. This includes, waypoints, trails, icons, cities, highways, etc. You can select any of these items, customizing the map to your needs. To get to Map Categories: 1. From the Map Page, press MENU| to MAP CATEGORIES DRAWN|ENT.
2. Press or to select a category or press then press or to select a subcategory. Press ENT to turn it off (no check) or on (checked.) 3. To return to the last page displayed, press EXIT|EXIT.
Map Menu (left); Map Categories Drawn Menu (right).

Map Orientation

By default, this receiver shows the map with north always at the top of the screen. This is the way most maps and charts are printed on paper.
In Track Up mode, map shows "N" and arrow to indicate north.
Map orientation is shown in north up (left) and track up (right).
This is fine if you're always traveling due north. What you see to your left corresponds to the left side of the map, to your right is shown on the right side of the map, and so on. If, however, you travel any other direction, the map doesn't line up with your view of the world. To correct this problem, a track-up mode rotates the map as you turn. What you see on the left side of the screen should always be to your left, and so on. Another option is course-up mode, which keeps the map at the same orientation as the initial bearing to the waypoint. When either the track-up or course-up mode is on, an "N" shows on the map screen to help you see which direction is north. To change map orientation: from the Map Page, press MENU| to MAP ORIENTATION|ENT. Use or to select the desired mode, then press ENT. Press EXIT|EXIT to return to the page display.

Map Menu (left) Map Orientation menu with the North Up map orientation option selected (right).

Navionics Charts

Your Unit can display Navionics electronic charts on MMCs. They work just like a MapCreate custom map on a MMC. 148
Entrance to Chesapeake Bay in a MapCreate 6 custom map with a 10mile zoom (left). The same position on Navionics chart at 11.15-mile zoom (center) and with a 5.56-mile zoom (right).
To display a Navionics chart: 1. Install the Navionics MMC in the memory card compartment and turn on the unit. (For full card install instructions, see Sec. 2.) WARNING: You should never format the MMC containing your Navionics chart. Formatting the MMC will permanently erase the chart from the card. 2. From the Map Page, press MENU| to MAP DATA|ENT| to NAVIONICS MAP CHOICE|ENT. Use or to select the Map Name, then press ENT|EXIT|EXIT.
These figures show menu sequence (from left to right) for selecting a Navionics chart for the South Chesapeake Bay area.
3. To turn off a Navionics chart, From the Map Page, press MENU| to MAP DATA|ENT| to NAVIONICS MAP CHOICE|ENT. Use or to select EAGLE, then press ENT|EXIT|EXIT. Port Information Navionics charts contain Port Services information, represented by anchor icons on the map display. An example is displayed in the following figure. To view Port Services information: 1. Use the arrow keys to move the cursor over a Port Services icon. When selected, a pop-up name box appears. 2. Press WPT to display the Port Services Information screen.
The Port Services information screen has two windows. The top window lists the various service categories. The lower window lists the detailed services available in each basic category.
Port Services icons Pop-up name box
Cursor lines Navionics chart showing Port Services icon selected by cursor.
3. To scroll through the Service Categories window: press ENT then use or to see the types of services available. As you highlight a different category, the list in the lower window changes. To return to the Map Page, press EXIT|EXIT. 4. The General Services category includes a long list of items in the Detailed Services window. To scroll through the Detailed Services window: from SERVICE CATEGORIES, press to DETAILED SERVICES|ENT, then use or to read the list of available services. To return to the Map Page, press EXIT|EXIT. To return to the top service category window, press ENT|.
Port Services information screens.
Tidal Current Information Navionics charts contain Tidal Current information, represented at large zoom ranges by a box icon with the letter "C." The icon stands for a Tidal Current Station location. 150

North American 1927 Cuba North American 1927 Greenland (Hayes Peninsula) North American 1927 Mexico North American 1983 Alaska, Canada, CONUS North American 1983 Central America, Mexico Observaorio Metereo 1939; Azores (Corvo & Flores Islands) Old Egyptian 1907 Egypt Old Hawaiian Mean for Hawaii, Kauai, Maui, Oahu Old Hawaiian Hawaii Old Hawaiian Kauai Old Hawaiian Maui Old Hawaiian Oahu Oman Oman Ordinance Survey Great Britain 1936 - Mean for England, Isle of Man, Scotland, Shetland Islands, Wales Ordinance Survey
Great Britain 1936 England Ordinance Survey Great Britain 1936 England, Isle of Man, Wales Ordinance Survey Great Britain 1936 Scotland, Shetland Islands Ordinance Survey Great Britain 1936 Wales Pico de las Nieves Canary Islands Pitcairn Astro 1967 Pitcairn Island Point 58 Sweden Santo (DOS) 1965 Espirito Santo Island Sao Braz Azores (Sao Miguel, Santa Maria Islands) Sapper Hill 1943 East Falkland Island Schwarzeck Nambia Selvagem Grande Salvage Islands SGS 85 Soviet Geodetic System 1985 South American 1969 Mean for Argentina,
Bolivia, Brazil, Chile, Colombia, Ecuador, Guyana, Paraguay, Peru, Trinidad & Tobago, and Venezuela South American 1969 Argentina South American 1969 Bolivia South American 1969 Brazil South American 1969 Chile South American 1969 Colombia South American 1969 Ecuador South American 1969 Ecuador (Baltra, Galapagos) South American 1969 Guyana
South American 1969 Paraguay South American 1969 Peru South American 1969 Trinidad & Tobago South American 1969 Venezuela South Asia
Tokyo Korea Tokyo Okinawa Tristan Astro 1968 Tristan da Cunha Viti Levu 1916 Fiji (Viti Levu Island) Wake
Singapore Eniwetok 1960 Tananarive Observatory 1925; Madagascar Timbalai 1948 Brunei, East Malaysia (Sabah, Sarawak) Tokyo Mean for Japan, Korea, Okinawa Tokyo Japan Marshall Islands Wake Island Astro 1952 Wake Atoll WGS 1972 Global Definition Yacare Uruguay Zanderij Suriname

FCC Compliance

This device complies with Part 15 of the U.S. Federal Communications Commission (FCC) Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the manufacturer could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. Consult the factory customer service department for help.

Eagle SeaChamp Big Screen, Big Color GPS Fish Finder
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Eagle SeaChamp Big Screen, Big Color GPS Fish Finder By Niall Pesci You get big screen, big color performance with a WAAS GPSChartplotter with Dual Frequency Sounder The Eagle Sea Champ 1000C is a great tool. Yes, we can not say it any simpler! It offers you some of the best features in fish finding gear. You will be impressed with its precision and its high quality as well. Here, let's take a look at some of the features that makes this fishfinder something similar to the perfect tool. Here are some of the Sea Champ's features. You can start by checking out the Eagle Sea Champ's awesome display. It is six inches big, just about the right size for easy viewing as you relax on your boat. It also has other features on the display that make it a good one including ultra bright for easy viewing in almost any type of light, 256 colors active matrix TFT LCD, high definition resolution and fluorescent cold cathode backlit screen and keypad. So, what does all of that give you? It delivers a clear picture that is easy to read. It gives you a picture that you can react to, meaning that you can see what type of fish are down there, the type of structure and even the size of the fish so that you can react and do what you need to, to get the big catch on board! It can be used in just about any light including at night! Still, there is more. The Eagle Sea Champ also features some of the best in sonar. It has the capability of going 1500 feet down making it a great distance fishfinding unit. It's technology separates fish from nearby structures or the bottom which will help you determine not just that something is there but what is there. This helps you decide if it's something you should go after or not. Still, there is much more. The GPS + WASS reception uses satellite technology to pinpoint your location to a few yards. This will help you to know where you are and where you need to go. You won't get lost if you turn around too many times. All in all, this Sea Champ will deliver for you all of the features that you need to capture the fish that you need and want! Go home with a full cooler thanks to this awesome tool! Niall Pesci is a keen lakes fisherman who is always looking at new tools to help him catch more fish. Visit Fish Finder Review for more information and great deals about the
Eagle SeaChamp 1000C and other Eagle GPS and Sonar fish finders and marine navigation systems. http://www.fishfinderreview.com This article may be reprinted in full so long as the resource box and the live links are included intact. All rights reserved. Copyright FishFinderReview.com
Change The Way You Look For Fish With The GPSEnabled Humminbird 981 By Niall Pesci The Humminbird 981 is a great tool to have for your next fishing trip. You will be able to take full advantage of the adventure with this fish finder. If you're out to find the fish, to score the biggest one in the lake, then you need to be equipped. That is just what you will get. Here are some additional details about this awesome tool. First, your goal is to have the best view of the bottom, and then you will appreciate the picture like details that you'll get with Side Imaging Sonar. Why do you need this feature? By being able to see the bottom of the lake, you know what's hiding down there. You know where your prey is and you can lure it in then. This is a GPS ready fishfinder with full screen trackplotter which will help you find where you are and where you are going. Your fish finder is protected from saltwater and freshwater and if you do drop it in, it will float. So, no matter how tricky your adventure gets, you won't need to worry about ruining the equipment. What does all of this get you? It gets you a fishfinding genius. It can help you to locate the fish that you want no matter where you are. By allowing you to "see" the bottom, you'll see just where your big fish is hiding. All this delivers for you the best results on your fishing trip. You'll walk away with a huge fish because your Humminbird will help you find it. You will marvel at the great features and the outstanding quality that the 981 has to offer. Why do you fish? To catch the big one? To impress friends? You can do both of these things when you use high quality imaging fishfinders like this one. This Humminbird will enable you to have a successful fishing trip every time. Visit Fish Finder Review for more information and great deals about the Humminbird 981c SI and other Humminbird GPS and Sonar fish finders and marine navigation systems.