Eagle SEACHARTER 640CDF - ADDITIONAL Spécifications

Pub. 988-0143-871 www.eaglesonar.comFishElite 640c &SeaCharter 640cDFFish-finding Sonars & Mapping GPSInstallation and Operatio

2After you have gained some experience with your sonar, you will wantto check out Section 4, which discusses more advanced Sonar Optionsand Other Feat

92The Satellite Status Page has its own menu, which is used for settingvarious options. To access the Satellite Status Page Menu, from theStatus Page,

93Speed is the velocity you are making over the ground. If you want, youcan customize the Speed data box to display Closing Speed instead.Closing Spee

94Travel Time is the time it will take to reach your destination at yourpresent closing speed. You can also customize the time data box to showArrival

95 Map Page opening screen (left). Map zoomed to 100 miles (center). Mapzoomed to 10 miles (right). Over Zoomed, listed at the top of the mapscr

96Background map vs. MapCreate map contentThe background map includes, low-detail maps of the whole world (con-taining cities, major lakes, major rive

97 When the map is zoomed out far enough, most POIs appear as squaredots (left). As you zoom in closer, the symbols become readable icons.In the 0.2

98Two Position Format map page option.In pages that have two major windows you can toggle back and forthbetween the two windows by pressing PAGES|PAGE

99On the Map with Sonar page, you can only change size, not switch lay-out. It is always two vertical windows. Press EXIT to clear the fourflashing ar

100Basic GPS Quick ReferenceStart outdoors, with a clear view of the open sky. As you practice, trynavigating to a location at least a few blocks away

101Find Your Current PositionFinding your current position is as simple as turning on the unit. Un-der clear sky conditions, the unit automatically se

3It's important to us and our power users, but if you don't care how manywatts of power the unit has or how many waypoints it can store, ski

102The selected wreck (the Empress) to the southeast is 12.81 miles away.Selecting Any Map Item With the Cursor1. Use the zoom keys and the arrow keys

1031. After the unit has acquired a position, press WPT|↓ to POI-RESTAURANTS.2. You could search the entire restaurant category, but in this examplewe

104you could by pressing Enter. The Go To waypoint command is alreadyhighlighted. But we just want to see it on the map, so press ↓ to FIND ONMAP|ENT.

105To create and save a Waypoint:These first two techniques use the Quick Save method, the fastest andeasiest way to create a waypoint.Create Waypoint

106 Sequence for setting a waypoint. Step 1: while traveling, press WPT tocall up Find Waypoint screen (seen in Step 2) and set a point. Step 3:

1074. Press ↓ to LONGITUDE|ENT. Enter the longitude by pressing ↑ ↓ tochange the first character, then press → to the next character and repeatuntil

108Set Man Overboard (MOB) WaypointOne of boating's most terrifying events is having a friend or familymember fall overboard. This unit has a man

1091. Use the cursor with the zoom in and zoom out keys to move aroundthe map until you find a location you want to go to.2. Center the cursor over th

110To stop navigating to the cursor, use the Cancel Navigation command.Press MENU|MENU|↓ to CANCEL NAVIGATION|ENT|← to YES|ENT. The unitstops showing

111 Sequence for saving a trail and beginning a new one. My Trails com-mand (left). The Trails Menu (center). The arrow to the right of Trail 3in

4Sonar SoundingDepth capability:... SeaCharter 640cDF: 1,500 feet (457 me-ters). FishElite 640c: 800 feet (244 meters).Actual capability depen

112To turn off trail display:1. Press MENU|MENU|↓ to MY TRAILS|ENT.2. Press ↓ to enter the Saved Trail list, then use ↑ ↓ to select the de-sired Trai

113NOTE:If you are already located at or near the beginning of your trail, thearrival alarm will go off as soon as you hit Enter. Just press EXIT tocl

114course line. To see the red course line, you must turn off the visible trailoption. The Navigation Page will show only the red course line, unlessy

115Navigate a Back Trail1. Press MENU|MENU|↓ to MY TRAILS|ENT.2. Press ↓ to enter the Saved Trail list, then use ↑ ↓ to select the de-sired Trail Nam

116You must enter which way you want to transfer data, from an MMCcard to the unit (load) or from the unit to an MMC card (save).GPS data automaticall

117 These figures (from left to right) show the menu sequence for namingand saving a GPS Data File from the unit's memory to an MMC.4. Load

118 These figures show the menu sequence for loading a GPS Data Filefrom an MMC into the unit's memory.Cancel NavigationYou can turn off a

119Section 7:Advanced GPS OperationsFind Distance Current Position to Another Location1. While on the Map Page press MENU|↓ to FIND DISTANCE|ENT.2. Ce

120IconsIcons are graphic symbols used to mark some location, personal point ofinterest or event. They can be placed on the map screen, saved and re-c

1211. Press MENU|↓ to DELETE MY ICONS|ENT.2. Press ↓ to DELETE ALL ICONS, DELETE BY SYMBOL or DELETE FROM MAP andpress ENT. Delete icons menu.The De

5Position points: ... 1,000 waypoints; 1,000 event marker icons.Audible alarms: ... Arrival/off-course/anchor.Graphic symbols forw

122A route allows you to navigate through several waypoints withouthaving to reprogram the unit after arriving at each waypoint. Onceprogrammed into t

1232. Press ↑ to NEW ROUTE, then press ENT. (To add to an existing route,press ↓ ↑ to route name|ENT.)3. Press ↓ to END OF ROUTE|ENT|↓ to ADD FROM MAP

124 Route creation sequence, continued: Fig. 4. Point (3) set at channel mouth.Fig. 5. Waypoint (4) set further south along the beach, at a recogniz

125Edit a Route Name1. From the NAVIGATION PAGE, press MENU|ENT or from the MAP PAGEpress MENU|MENU|↓ to ROUTE PLANNING|ENT.2. Highlight Saved Route

126 Route Planning command on Main Menu (left). Routes menu (center).Edit Route menu (right) with Navigate Route command is selected.2. Press ↓ to

127TrailsDelete a TrailThis is the command used to erase or delete a trail.Press MENU|MENU|↓ to MY TRAILS|ENT|↓ to trail name|ENT|→ toDELETE TRAIL|EN

128then press → to the next character and repeat until the pattern is cor-rect. Press ENT. To get back to the main page press EXIT repeatedly. Edit

129is highlighted in the list, press ENT|ENT. Use ↓ to select DELETE WAYPOINTthen press |ENT|← to YES|ENT. To return to the main page display,press EX

130Selecting a WaypointTo select a waypoint on the map center the cursor crosshairs on thewaypoint. A red border will appear around the waypoint.Set a

131Section 8: System & GPS SetupAlarmsThis unit has three GPS alarms: Arrival Alarm, Off Course Alarm andAnchor Alarm — the only one of the three

6chart. The sonar's microprocessor calculates the time lapse between thetransmitted signal and echo return to determine the distance to theobject

132IMPORTANT ALARM NOTES:Anchor Alarm - The anchor alarm may be triggered even when youare sitting still. This usually happens when using small — less

133 Menus for changing Com Port settings.For assistance in configuring the unit to communicate with anotherdevice, consult the factory. Customer

134• VLW transmits the distance traveled through water as meas-ured by the paddle wheel.• VHW transmits the water speed as measured by the paddlewhe

135The Military Grid Reference System (MGRS) uses two grid letteringschemes, referred to as standard and standard + 10 MGRS on this unit.Your position

136To configure a map fix:To use this format, you need to follow these steps in order. Take a mapof the area and determine a reference latitude/longit

137command SET AS ORIGIN selected. Press ENT and the unit returns to theConfigure Map Fix menu. Finally, press EXIT to close this menu. Nowpress ↑ to

1385. Use ↑ ↓ to change the data in another digital data box or press EXITto return to normal operation.Customize Navigation PageWhile on the Navigat

139the arrow keys — STEER WITH ARROWS command — or by setting the trackand speed in the dialog boxes provided on the simulator menu screen.To get to t

140tion begins. Press EXIT to clear the alarm.) When navigation starts,press ↑ to increase speed to the desired setting.4. Press EXIT to turn off the

141Map Auto ZoomThis receiver has an auto zoom feature that eliminates a lot of the but-ton pushing common with other brands of GPS receivers. It work

7making software, MapCreate 6 or one of our special plug-and-playmapping cards. Some unit features — such as searching for businessesand addresses —

142Pop-up Map InformationFrom the Map Data menu, highlight POPUP MAP INFORMATION and pressENT to turn it on (check) or turn it off (uncheck). After

143All datums have a name. The GPS system is based on the WGS-84 da-tum, which covers the entire world. Other datums may cover the entireworld or just

144 Map Menu (left). Map Categories Drawn Menu (right).To get to Map Categories Drawn:1. From the Map Page, press MENU|↓ to MAP CATEGORIES DRAWN|ENT

145To correct this problem track-up mode rotates the map as you turn. Sowhat you see on the left side of the screen should always be to your leftand s

146 NauticPath chart showing Chart Note icon selected by cursor (left).Note information screen (right).To view Chart Note information:1. Use the

147To view Port Services information:1. Use the arrow keys to move the cursor over a Port Services icon.When it is selected, a pop-up name box appears

148zoomed in to a 6-mile range. The icon stands for a Tidal Current Sta-tion location. An example is displayed on the right.When you zoom in to a suff

149The Tidal Current Information screen displays daily tidal current datafor this station on this date at the present time. The graph at the top ofthe

150To view tide information:1. Use the arrow keys to move the cursor over a tide station icon. Whenit is selected, a pop-up name box appears.2. Press

151inserted into the unit. Navionics charts must be inserted into theunit, then selected as a Map Choice option in the Map Data menu.To display a Navi

8so you can mount your unit and plug in the power. Or you might wantto see how our text formatting makes the manual tutorials easy toskim. If that&apo

152 System Setup Menu (left) with Pop-up Help highlighted.Pop-up Help message for the Map Data (right).Reset OptionsTo reset unit to factory default

153To Require WAAS:1. Press MENU|MENU|↓ to GPS SETUP|ENT|↓ to REQUIRE WAAS|ENT.2. To return to the main page display, press EXIT|EXIT.3. Repeat Step 1

154Set LanguageThis unit's menus are available in 10 languages: English, French, Ger-man, Spanish, Italian, Danish, Swedish, Russian, Dutch and F

155oping the WAAS system, it is not unusual for a GPS/WAAS receiver tofrequently lose and reacquire its lock on a WAAS satellite. That canresult in th

156 Sounds highlighted on main menu (left). Sounds menu (right).Sounds MenuTo adjust Sounds and Alarm Styles:Press MENU|MENU|↓ to SOUNDS|ENT.To set

157Track Smoothing option, turned on.Trail OptionsThere are several options you can use with trails. Some affect all trails,others can be applied to a

158WARNING:If you uncheck the Update Trail option, automatic trailcreation and recording will be turned off. You must turnit on to record trails. The

159 Trail Name highlighted (left). Edit Trail menu (center). Trails menuwith New Trail highlighted (right).Specific Trail OptionsDelete TrailFr

160the screen's display while working with a menu. A low transparencyusually will make menu text easier to read, at the cost of watching yourdisp

161Section 9: SearchingNOTE:The background map loaded in your unit lets you search for U.S.Interstate Highway exits and exit services, as well as some

9Remember, the unit must have a clear view of the satellites in order toreceive their signals. Unlike radio or television signals, GPS works atvery hi

162In search results, the distance and bearing to the selected item will becalculated from the current position. In the case of a cursor search, these

163NOTE:We recommend you do not enter a city name unless the list you aregiven is too large when searching without it. This unit can actuallysearch qu

1648. To navigate to the address, press MENU select GO TO and press ENT.The unit will begin showing navigation information to the address. Ifyou are o

165 A POI selected by the cursor (left). POI information screen (right).NOTE:Since the Go To waypoint command is highlighted, you can navi-gate to t

166 Find By Name menu (left). Find Exit menu with exit selected (right).3. Once you have selected a highway name you can select an exit. Press↓ to s

167 Exit Information screen (left). General locationand amenities information (right).Find Map Places or Points of Interest (POI)1. Press WPT, use ↓

168 Find by nearest option (left) with resulting POI list (right).3. Search by name of POI. Highlight NAME and press ENT. There aretwo options: A. Yo

169 Go To POI option (left). Find on Map POI option (right).Find Streets or IntersectionsFind a Street1. From the Map Page, press MENU|↓ to FIND STR

170 The Find Streets menu with the Find First Street command high-lighted (left). Streets Found list (center). Map Page showing results ofa stre

171ENT|ENT. B. Or you can jump down to the lower box and pick the sec-ond street from the selection list. Press ENT, then press ↓ ↑ to select astreet

10of terrain! It only calculates position, it can’t know what’s between youand your destination, for example. It’s up to you to safely navigatearound

172If you want to navigate to the found intersection, just pressMENU|ENT|EXIT.Find Waypoints1. Press WPT|↑ to MY WAYPOINTS|ENT.2. If searching for the

173 Find By Name menu (left). Waypoint Information screen (center). Thecursor crosshairs are centered on the desired waypoint (right).A. To navig

174Notes

175Section 10: Supplemental MaterialDatums Used by This UnitWGS 1984DefaultAdindanMean for Ethiopia,SudanAdindanBurkina FasoAdindanCameroonAdindanEthi

176Chua AstroParaguayCorrego AlegreBrazilDabolaGuineaDjakarta (Batavia)Indonesia (Sumatra)DOS 1968New Georgia Islands(Gizo Island)Easter Island 1967Ea

177Naparima BWITrinidad & TobagoNorth American 1927Mean for Antigua,Barbados, Barbuda,Caicos Islands,Cuba, DominicanRepublic, GrandCayman, Jamaica

178Point 58SwedenSanto (DOS)1965 Espirito SantoIslandSao BrazAzores (Sao Miguel,Santa Maria Islands)Sapper Hill 1943East Falkland IslandSchwarzeckNamb

179FCC ComplianceThis device complies with Part 15 of the U.S. Federal Communi-cations Commission (FCC) Rules. Operation is subject to the fol-lowing

180Notes

181Notes

11The emulator works exactly like your real sonar/GPS unit. When usingthe Sonar and GPS Simulators you can play back sonar logs, run GPSroutes and tra

182Notes

183EAGLE DATABASES LICENSE AGREEMENTTHIS IS A LEGAL AGREEMENT BETWEEN THE END-USER WHO FIRSTPURCHASES THIS PRODUCT AS A CONSUMER ITEM FOR PERSONAL,FAM

184DATABASES LIMITED WARRANTY"We", "our", or "us" refers to Eagle Electronics, Inc., the manufacturer of thisproduct. &q

185EAGLE ELECTRONICSFULL ONE-YEAR WARRANTY"We," "our," or "us" refers to EAGLE ELECTRONICS, INC., the manufacturer of th

186How to Obtain Service……in the USA:We back your investment in quality products with quick, expert serviceand genuine Eagle parts. If you're in

Accessory Ordering Informationfor all countriesTo order Eagle accessories such as power cables or transducers,please contact:1) Your local marine deal

Visit our web site:www.eaglesonar.comEagle Pub. 988-0143-871 © Copyright 2005 All Rights ReservedPrinted in USA 121205

Copyright © 2005 LEI-EagleAll rights reserved.No part of this manual may be copied, reproduced, republished,transmitted or distributed for any purpose

12For 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

13Section 2: Installation & AccessoriesPreparationsYou can install the unit in some other order if you prefer, but we rec-ommend this installation

14Remember, transducer location is the most critical part of a so-nar installation.Recommended Tools and SuppliesIf you prefer the option of routing t

15typically have large outboard motors capable of propelling the boatat speeds faster than 35 mph. Typically, a good transom location onaluminum boats

16 Align transducer centerline with hull bottom. A dual frequency transducer (left) and a single frequency transducer (right).There, however, are t

17Second, the transducer angle cannot be adjusted for the best fish archeson your sonar display. (This is not an issue for flasher-style sonars.)Lack

18ing illustrations. Notice there are letters molded into each ratchet. Placethe ratchets into the bracket with the letter "A" aligned with

19Reassemble the transducer and bracket and place them against thetransom. Again, check to see if you can move the transducer so it's par-allel w

203. Assembling the transducer.A. One-piece bracket: Once you determine the correct position for theratchets, assemble the transducer as shown in the

215. Attaching transducer to transom.A. One-piece bracket: Remove the transducer from the bracket and re-assemble it with the cable passing through th

iTable of ContentsSection 1: Read Me First!... 1Capabilities and Specifications: ...

22WARNING:Clamp the transducer cable to the transom close to thetransducer. This can prevent the transducer from enter-ing the boat if it is knocked o

23Transducer mounted on trolling motor, side view.Transducer Orientation and Fish ArchesIf you do not get good fish arches on your display, it could b

24Shoot-Thru-Hull PreparationHulls With Flotation MaterialsThe transducer installation inside a fiberglass hull must be in an areathat does not have a

25Shoot-thru-hull transducer locations forhigh speed or trolling speed operation.To choose the proper location for shoot-thru-hull mounting, follow th

26If you can't get an acceptable bottom signal, try turning up the sensitivityby three or five keystrokes and then move the transducer around onc

27Epoxy transducer to hull.WARNING:Use only the epoxy available from LEI. It has been for-mulated to work with these installation procedures.Other ep

285. After the epoxy has cured, route the cable to the sonar unit and it'sready to use.Speed/Temperature SensorsThis unit can accept as many as t

29Sonar unit with external temp sensor, external speed sensor, or combospeed/temp sensor. The primary temperature sensor is builtinto the transducer.O

30Once you have determined the proper location for the unit, place thesensor on the transom. The bottom of the bracket should be flush withthe hull&ap

31Power ConnectionsThe unit works from a 12-volt battery system. For the best results, at-tach the power cable directly to the battery. You can attach

iiPages ... 44Satellite Status Page ...

32WARNING:This product must be independently fused with the en-closed 3-amp fuse (or equivalent), even if you connect toa fused accessory or power bus

33work well if you have a cab-over design pickup truck camper or motorhome. If dashboard reception is poor, simply relocate the antenna mod-ule elsewh

34gimbal bracket to a swivel mount, which can be used on the dash oroverhead mounting positions.Optional R-A-M mounting system.Bracket InstallationMou

35Install the gimbal bracket. Position the bracket so the arms slope to-ward the front of your unit.Drill a 1-inch (25.4 mm) hole in the dash for the

36Pass the power cable's bare-wire end down though the hole from thetop. If you want, you can fill in the hole around the cables with a goodmarin

37Portable InstallationLike many Eagle products, this unit is capable of portable operation byusing an optional portable power pack (PPP). The power p

38Additional MMC cards are available from LEI Extras. See ordering in-formation inside the back cover of this manual. MMCs and SD cardsare also availa

39MapCreate™ 6 CD-ROM (left). MMC card reader for USB ports (right).NOTE:When you first turn on the unit, the Map Page appears. If youwould rather sta

40Notes

41Section 3: Basic Sonar OperationThis section addresses the unit's most basic sonar operations. The in-structions presented in Sec. 3 follow a

iiiStop Chart ... 80Surface Clarity...

424. ARROW KEYS – These keys are used to navigate through menus,make menu selections, move the map and sonar chart cursors and enterdata.5. ENT/ICONS

43You can access the Main Menu from any of the four Page screens bypressing MENU|MENU. To clear the menu screen and return to the pagedisplay, press E

44Timers: controls the up timer, down timer and alarm clock settings.Browse MMC Files: allows you to view the installed MMC card andthe files it conta

45Satellite Status Page showing satellite lock-on with a 3D positionacquired (latitude, longitude and altitude) with WAAS reception.Navigation PageThi

46 Map Page showing position on Bull Shoals Lake, Arkansas. The fullmap option (left). Map with sonar option (right).Map Page is also the default sc

47 The four Sonar Page display modes: Full Sonar Chart (left).Split Zoom display mode (right). Split Frequency mode (left) and Digital Data mode

48You can customize how the Sonar Page displays its pictures and otherdata in many ways. Your unit also includes several special sonar featuresand opt

49Basic Sonar Quick Reference1. Mount the transducer, antenna and unit. Connect the unit to electricpower and the transducer. (If GPS operation is des

50Sonar OperationsAs you can see from the quick reference, basic operation is pretty easy, rightout of the box. If you are a sonar novice, try operati

51Adjusting sensitivity in Auto Sensitivity Mode is similar to manually ad-justing a car's speed with the accelerator pedal while cruise control

ivCreate Icon at Current Position ... 120Delete an Icon ...

52SENSITIVITY|ENT|↑ to SENSITIVITY|ENT. Press ↓ ↑ to pick a differentsensitivity setting. When it is set at the desired level, press EXIT.Tip:While y

53Section 4: Sonar Options & FeaturesASP (Advanced Signal Processing)The ASP feature is a noise rejection system built into the sonar unitthat c

54AlarmsThis unit has three types of sonar alarms. The first is the Fish Alarm.It sounds when the Fish I.D. feature determines that an echo is afish.

553. Press ↑ ↓ to change the first number, then press → to move the cur-sor to the next number and repeat until the depth is correct. Press ENT.4. Pre

56Fish AlarmUse the fish alarm for a distinctive audible alarm when fish or othersuspended objects are detected by the Fish I.D. feature. Fish I.D.mu

57Chart SpeedThe rate echoes scroll across the screen is called chart speed. The de-fault is maximum. We recommend you keep the default setting for mo

58For example, a soft, muddy or weedy bottom returns a weaker signalwhich is shown with a narrow, colored line (dark blue tinged with redor a little y

59 A little ColorLine (left) indicates a soft bottom, probably sand or mud.Wider ColorLine (right) indicates a harder, rocky bottom.Customize Page D

60 Digital Data box containing Water Temp is highlighed (left). DataViewer with GPS Data and Navigation categories expanded (right).Selecting the c

61The cursor can be moved to any location on the screen, letting you pin-point the depth of a target.1. From the Sonar Page, press MENU|↓ to DEPTH CUR

vPop-up Map Information ... 142Draw Map Boundaries...

623. Press ↓ ↑ to select a different depth range. A horizontal blue barhighlights the selected range.4. When the new range is selected, press EXIT to

63The sonar's microcomputer is sophisticated, but it can be fooled. It cannot distinguish between fish and other suspended objects such as trot-l

64To turn on FishTrack:NOTE:These steps turn on FishTrack and Fish I.D. at the same time.1. From the Sonar Page, press MENU|↓ to SONAR FEATURES|ENT.2.

65sonar. In many of those cases, you will see a 50 kHz transducer fre-quency in use because the wider cone angle lets them watch the bait. Sonar Fea

66 Sonar Page menu with Log Sonar Chart Data selected (left). SonarChart Logging menu with Start Logging command selected (right).To record or log

67You can select items from any of these categories for display, in anycombination. The category divisions are there only to help you sortthrough the

68 From Overlay Data Shown (left) press ENT to see Data Viewer (center).Select a category and press ENT, then choose a data option to displayand

693. The data begins to flash on your screen. Use ↓ ↑ ← → to move thedata to a new location on the display.4. When have the data in the desired posi

70you change the Ping Speed to any setting greater than 50 percent, theunit automatically enters HyperScroll mode.These faster ping rates allow you to

71This allows you to better see sonar returns, just as you would on aflasher sonar unit. For more information on FasTrack, see its entry inthis sectio

viWARNING!A CAREFUL NAVIGATOR NEVER RELIES ON ONLY ONE METHODTO OBTAIN POSITION INFORMATION.CAUTIONWhen showing navigation data to a position (waypoin

72Set Keel OffsetThis unit measures water depth from the face of the transducer. Sincethe transducer is installed below the water surface, the distanc

733. Press → to the first number, then press ↑ to change the number to 1.4. Press → to the second number, them press ↑ to change the num-ber to 5 and

74 Sonar Menu with Sensitivity command selected (left).The Sensitivity Control Bar (right).To adjust sensitivity in manual mode:1. First, turn off

75Sonar Page & Sonar Chart Display OptionsThe Sonar Page Menu offers four chart display options. To access them,press PAGES|→ to SONAR|↓ to Option

76 Full Sonar Chart (left). Split Zoom Sonar Chart (center) with left win-dow zoomed to 2X. Split Zoom chart (right) zoomed to 4X.Split Zoom Son

77 Sonar Page Menu showing Customize command highlighted (left).The first data box (Water Temp) is flashing (right).1. From the Digital Sonar Page,

78select a display option. With the option highlighted, press ENT to turn iton (check) and turn it off (uncheck). When you have selected a data op-tio

79 Main Menu with Sonar Setup command selected (left). Submenu withSonar Simulator command selected (center). Sonar Simulator menu(right), with

803. Press ↓ or ↑ to select chart name|ENT|↑ to SONAR SIMULATORON|ENT|EXIT.While you are in the Sonar Simulator menu, do not forget to checkSimulate

81changing the sensitivity of the receiver, decreasing it near the surfaceand gradually increasing it as the depth increases.There are three levels of

1Section 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 youare anx

82 Sonar Page (left). Sonar Page zoomed 2X (center).Sonar Page zoomed 4X (right).Zoom PanYour unit has the handy ability to quickly zoom in on any

83Section 5: Sonar TroubleshootingIf your unit is not working, or if you need technical help, please use thefollowing troubleshooting section before c

843. The water may be deeper than the sonar's ability to find the bottom.If the sonar can't find the bottom signal while it's in the au

85To eliminate or minimize the effects of electrical noise, first try to de-termine the cause. With the boat at rest in the water, the first thingyou

86Notes

87Section 6: Basic GPS OperationsThis section addresses the unit's most basic GPS operations. The tuto-rials presented in Sec. 6 follow a chronol

884. ARROW KEYS – The arrow keys are used to navigate throughmenus, enter data, make menu selections, move the map cursor andsonar chart cursor.5. EN

89Main Menu.The Main Menu commands and their functions are:Screen: changes the contrast or brightness of the display screen.Sounds: enables or disable

90PagesThe unit has four Page displays: Satellite Status Page, Navigation Page,Map Page and Sonar Page. They are accessed by pressing the PAGES key,th

91 Satellite Status Page. The first figure (left) indicates unit has not lockedon to any satellites and does not have a fix on its position. The sec