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Lowrance electronic LMS-350A User's Manual

1. CURRENT POSITION 36 08 972 95 50 556 5 0 9 SHALLOW DEEP ALARM ALARM OFF OFF TEMP CF SPEED Nav Summary 00 00 50 GROUP v 46 BATTERY VOLTS 169 P 1 98 U Ba 5 33 13 02 06 24 12 14 GROUP Q 46 7 SHALLOU DEEP ALARN ALARM OFF OFF TTG 89 99 99 eue B 205 GROUP U WINDOWS SUMMARY Allofthe available windows used by the LMS 350A are shown on the following pages To view these groups simply press the WINDOWS key then press the MENU key twice Now press the key next to the View all Windows label Press the key next to the Prev or Next labels to cycle the unit through all windows DIGITAL TEMPERATURE This windou displays water surface temperature Units of measure and temperature graph range are set in the window menu WINDOW 2 Ki spa 6 2705732 Clock Face This is an analog clock When locked on to satellites it will show local time with atonic accuracy WINDOW 4 BEARING TO WPT Bearing
2. LMS 350A INSTALLATION AND OPERATION INSTRUCTIONS LOWRANCE ELECTRONICS INC 12000 E SKELLY DR TULSA OK 74128 IMPORTANT YOU MUST HAVE THE OPTIONAL LGC 1 GPS MODULE ATTACHED TO THE LMS 350A TO USE THE POSITION AND NAVIGATION FEA TURES ON THIS PRODUCT WARNING USE THIS PRODUCT ONLY AS AN AID TO NAVIGATION A CAREFUL NAVIGATOR NEVER RELIES ON ONLY ONE METHOD TO OBTAIN POSITION INFORMATION CAUTION The LGC 1 GPS receiver like all GPS navigation equipment will show the shortest most direct path to a 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 travelling to a waypoint but will also visually check to make certain a clear safe path to the waypoint is always available NOTICE As of this writing the Department of Defense DOD has not declared the GPS navigation system operational The system is still in a testing phase Satellites can be turned off or accuracy can be degraded at will by the system operators Remember that the LMS 350A or any GPS receiver is only as accurate as the system it s using Copyright 1993 Lowrance Electronics All rights reserved All features and specifications subject to change without notice All screens in this manual are simulated SONAR TABLE CONTENTS
3. Pe 1 MOUNTING 1 POWER CONNECTIONS 23 TRANSDUCER CONNECTIONS 4 OPTIONAL GPS MODULE INSTALLATION 5 KEYBOARD BASICS 8 DISPLAY 9 MENUS 10 HELP 10 WINDOWS Letter etre 10 VIEWING WINDOWS OPTIONS 212 MODIFYING GROUPS 12 RESETTING ALL GROUPS 13 5 14 AUTOMATIC 14 SENSITIVITY 15 RANGE 16 ZOOM Automatic Operation 17 ZOOM Manual Operation 18 MENU PAGE 1 19 CHART SPEED 19 GRAYLINE 19 FISH LD 20 DISPLAY CONTRAST 21 ALARMS 502 FISH ALARM 22 DEPTH ALARMS 23 ZONE ALARM 24 SONAR FREQUENCY 25 DUAL FREQUENCY OPERATION 26 MENU PAGE 2 0 2 1 27 ADJUST BACK LIGHT LEVEL 27 BACK LIGHT ON OFF 27 SPEAKER VOLUME 27 TURN DIGITAL BOX OFF 28 CONSTRUCT DIGITAL BOX 28 MENU PAGE 29 DISPLAY ZOOM BAR DISPLAY ZONE DIGITAL SONAR 30 TURN ALL SONAR OFF CHART CURSOR MENU PAGE 4 30 FASTRAK 31 SELECT UNITS OF MEASURE 31 CLEAR DISTANCE LOG DEPTH LINES 92 MENU PAGE 5 iere 33 ADJUST CHART SURFACE CLARITY 33 ADVANCED SIGNAL PROCESSING ASP 34 SYSTEM INFORMATION 34 PRESET SONAR
4. 56 CHANGE TIME CHANGE DATE COLD START cit eatin POSITION NAVIGATION DISPEAYS tetti toii tot ta daa 58 SATELLITE INFORMATION SCREEN 58 POSITION SCREEN 59 STEERING SGREEN 60 CUSTOMIZE SCREENS iti ee Nad 61 PLOTTER ciatis PLOTTER CURSOR PLOTTING WITEA WAY POINT 64 EATE EEE 64 PLOTTER MENU PAGE 1 64 CLEAR PLOT SEDBAN GE 65 ICON ON OFF sorca 65 CHANGE DISPLAY PLOTTER MENU PAGE 2 66 GOT OSCR O Re EL 66 PLOTTER UPDATE reto RE cd ennai 67 GRID LINES 2 67 SELECT UNITS OF MEASURE 68 EVENT MARKER 2 RM 69 USING THE EVENT MARKER WITH THE CURSOR 2 0 69 ERASINGHGONS WAYPOINT NAVIGATION HOW TO SAVE WAYPOINT tni tert ene an Fata ESE 71 QUICK SAVE METHOD citta ce ee cede tees aa E adele 71 VIEW AND SAVE METHOD 71 ENTER NEW WAYPOINT 72 NAME A secare cete eere ERASE A WAYPOINT RECALL A WAYPOIN
5. To set the zone alarm press the MENU key Now press the key next to the Adjust Alarms label Finally press the key nextto the Set Zone Alarm label A screen similar to the one shown below appears The zone alarm bar shows on the right side of the screen Use the arrow keys to move the bottom of the bar higher or ME 4 lower move the top of the o SET ONE LOWER LIMIT bar first press the key next to USE ARROW KEYS 36 the CHANGE TO UPPER la bel Now use the arrow keys to move the top of the bar higher ia press the CLR key to erase the menus The above steps automatically turn the zone alarm on if it was off To turn the zone alarm off press the MENU key then press the key next to the Adjust Alarms label Now press the key next to the Turn Zone Alarm Off label at the bottom of the screen Normally the zone alarm bar disappears from the screen after you make adjustments To leave the zone alarm bar on the screen all of the time see the Display Zone Alarm Bar section in this manual for instructions 24 SONAR FREQUENCY The LMS 350A operates from 50 or 192 kHz either inde pendently or simultaneously The sonar unit comes with a 192 kHz transducer other op tional transducers are avail able See the transducer dia gram on page 3 for single or dual transducer connections The chart can operate from a different frequency t
6. label The screen 72 shown above appears Use the keys on both sides of the screen to enter the way point name For example to name a waypoint COVE 1 A eae press the ALARM key repeat EVENT MARKER TO ACCEPT THE edly until the letter appears CHANGE OF PUSH CLR TO ABORT in the window Next press the right arrow key to move the black box to the next letter po sition Now press the WAYPT RECALL key repeatedly until the O appears on the screen Repeat this process until the entire name has been written on the screen Now press the key next to the Accept NAME label The LMS 350A returns to the waypoint save menu as shown above To save the waypoint with this name first press the key next to the Save WPT label Now press the key next to the Exit label to exit this menu Erase a Waypoint The Waypoint Erase feature lets you erase waypoints from the list To erase a waypoint first press WAYPT key then press the key next to the WPT Save label Now press the key next to the Increase WPT or VAITE Decrease WPT label until the DELETE WAYPOINT i j desired waypoint number ARE YOU SURE pears on the screen Simply press the key next to the ERASE WPT label The screen shown above appears A message appears on the screen that says WAIT DELETE WAYPOINT ARE YOU SURE If you are certain this is the waypoint that you wish to erase
7. ASP Advanced Signal Processing The ASP feature is a noise rejection system built into the LMS 350A that constantly evaluates the effects of boat speed water conditions and interference This automatic feature gives you the best dis play possible under most con ditions The ASP feature is an effective tool in combating noise In sonar terms noise is any undesired signal It is caused by electrical and mechanical sources such as bilge pumps engine ignition systems and wiring air bubbles passing over the face of the transducer even vibration from the engine In all cases noise can produce unwanted marks on the display The ASP feature has two levels Normal and High If you have high noise levels try using the High ASP setting However if you are having trouble with noise we suggest that you take steps to find the interference source and fix it rather than continually using the unit with the high ASP setting However there are times when you may want to turn the ASP feature off This allows you to view all incoming echoes before they are processed by the ASP feature To change the ASP level press the MENU key then press the key next to the More label until the fifth menu page appears Then press the key next to the Level of ASP label until the desired level is obtained SYSTEM INFORMATION SYSTEM INFORMATION The System Information menu gives you the date and revision number of the software used
8. DISPLAY ZONE BAR When the zone alarm is on the zone bar doesn t normally show on the screen To turn the zone bar on continuously first press the MENU key then press the key next to the More label until the third menu page ap pears Now press the key next to the Display Zone Alarm Bar label The zone alarm bar ap pears on the right side of the ms or 29 sonar screen as shown at right This turns the zone alarm on at the same time To turn the zone bar off repeat the above steps until the third menu page appears then press the key adjacent to the Re move Zone Bar label Note DIGITAL SONAR When the LMS 350A is turned on for the first time the digital depth display is located at the top left corner of the screen This display comes from a separate digital sonar built into the unit It displays only the bottom depth If it loses the bottom the last known depth will flash on the display When the digital finds the bottom it will automatically display the bottom depth again The digital sonar can be turned off however this also turns all automatic features off also such as auto sensitivity auto ranging and the Fish I D feature To turn the digital sonar off press the Menu key then press the key next to the More label until the third menu page appears Now press the key adjacent to the Turn Digital Sonar label To turn it back on again repeat the
9. LIS its This let s you create a zoom window down to five 12 feet in virtually any combina tion of upper and lower limits f For example a range with a 15 foot upper limit and a 45 foot lower limit creates a 30 foot uso aero 0 saa s then this created a 2X zoom iv To change the range first make certain the LMS 350A is in the manual mode Next press the RANGE key The range adjustment menu appears onthe right side of the display To change only the lower limit simply press the up or down arrow keys to decrease or increase the range The available ranges are 0 5 10 20 30 40 60 100 150 200 300 500 800 1000 1500 2000 3000 and 5000 feet After the desired range is displayed press the CLEAR key to erase the range menu NOTE The maximum depth capability of the LMS 350A de pends onthe transducer instal 12 lation water and bottom condi p tions and other factors 24 performance of the LMS 350A will vary from day to day be E 100 FT cause of changing conditions change an upper or lower limit using the numbered keys first press the RANGE key then press the key next to either the CHANGE UPPER LIMIT or MANUAL 46 9 USE NUMBER KEYS TO CHANGE UPPER LIMIT USE RIGHT ARROW TO BACKSPACE PRESS ENTER TO ACCEPT CHANGE LOWER LIMIT la bels On the screen shown at right
10. HQ 400 radius 4 places 5 375 Once you ve determined the location for the unit cut the hole according to the drawing shown above Measure carefully before cutting After cutting the dash place the gasket supplied with the LMS 350A around the unit and place the unit in the hole Supplied with the LMS 350A are rubber pads bolts washers and cam clamps to attach the LMS 350A to the dash Peel the adhesive backing off the rubber pads and place one on each side of the LMS 350A in the location where the cam clamp will touch the back side of the dash Using the hardware supplied with the unit attach the LMS 350A to the dash Make certain thatthe cam clamp on the left side of the unitis pointing down and the cam clamp on the right side of the unit is pointing up before you start tightening the bolts RUBBER PAD RUBBER PAD BOLT BOLT TANE CAM CLAMP CAM CLAMP TURNED DOWN TURNED UP POWER CONNECTIONS The LMS 350A works from a twelve volt battery system For the best results attach the power cable directly to the battery You can attach the power cable to an accessory or power buss however you may have problems with electrical interference Therefore it s safer to go ahead and attach the power cable directly to the battery If the cable is too short splice 18 gauge wire onto it The power cable has four wires red black green and white Red is the positive lead
11. PLOTTER The plotter lets you see your course and direction of travel on the screen If you ve recalled a waypoint the plotter shows your starting location present position and destination However you do not have to recall a waypoint to use the plotter The plotter also can show grid lines on the display These grid lines show latitude and longitude lines that can help you visulize your position or the location of other objects To use the plotter simply press the PLOTTER key Ascreen similar to the one at the top of the next page appears 62 POSITION The flashing cross is your present position The solid line i is your track or path you have just traveled The large square is a compass rose marked with North South East and West The square s height and width shows at the bottom of the screen This is the distance from one side to the other and from the top to the bottom Your present position is shown at the top of the screen If your present position starts to move outside the square the LMS 350A clears the display then re draws your present position closer to the center ofthe screen Your present position will always be displayed on the plotter To clear the plotter screen see the Plotter Menus section On the left side of the screen below the Present Position box are the Speed Over Ground SOG Distance To Go DTG and Bearing BRG digital displays All of these displays are used only when
12. degrees After you ve entered the last number press the key next to the Longitude W E label to change it from west to east if necessary When everything in the longitude field is correct press the key nextto the Accept Lon label CHANGE ALTITUDE To enter your present altitude move the black box to the Altitude field using the arrow keys Now press the key next to the Change Alt label The LMS 350A needs to know your elevation above sea level Not your height above the ground Again an approximation is usually sufficient Use the numbered keys to enter your altitude data Press the key next to the Altitude label if your altitude is below sea level For example suppose you re in Death Valley and the spot you re standing in is 35 feet 56 below sea level You would needto enter the numbers 35 Initial Settings Latitude 35 50 000 then press the key next to the Longitude W 95950000 Altitude label to change it Altitude 6508 to 35 feet Press the key next ime 1 13 57 to the Accept Alt label when 11 03 2031 you re done CHANGE TIME To change the local time the time at your position press the arrow keys to move the black box to the Local Time field Now press the key next to the Change Time label The screen shown below appears Use the number keys to enter the time Remember to enter a Initial Settings zero first ifthe time is less than Latitude M 35 90 000 10 F
13. in the calculations have to be made to accommodate deviations To make matters more complex not everyone uses the same data to determine whatthe deviations are The size and shape of the ellipsoids that are used to approximate the earth s surface are improved often This can lead to errors if your navigation device uses one ellipsoid while your chart uses a different one The term used for these ellipsoids is Datum To reduce the error factor between datum this unit gives you the capability to move or offset the position shown on the display to match the one on the chart The unit will add this offset to all position displays at all times For example suppose you are anchored at a location that is accurately marked on a chart Your unit shows a longitude position that is 010 degrees less than the one on the chart Using the Position Correction Factor PCF Offset feature you make the unit read the same as the chart If you raise anchor and move the unit will continuously add the change to all position displays This makes it more closely match the datum used by the chart For this reason you should be careful when entering the PCF offset This offset is saved in memory It doesn t change when the unit is turned off However a Preset does erase the PCF factor To set the PCF factor first press the MENU key then press the key next to the Chan ings PCF Correction Offsets Change GPS Sentings 556 Lat Offset
14. side of the screen are distance markers showing the remain ing distance to the recalled waypoint If the numbers have a black box surrounding them then the distance markers is showing the distance PAST the waypoint In other words if the numbers are sur rounded by a black box then you have passed the waypoint and need to turn around The numbers immediately below the CDI are the CDI range in miles This gives you an idea of how far off course you are For example if the arrow is halfway between the course line and the outside left line and the CDI range is 0 5 miles then your cross track error is to the left 0 25 miles The CDI range is the same as the CDI alarm setting See the section on GPS alarms to change the CDI range Using the digital displays at the bottom of the screen with the graphical display at the top let you accurately steer the boat to a waypoint CUSTOMIZE SCREENS The digital displays on the bottom half of the Position Steering and Satellite screens plus the displays on the Plotter screen can be changed as desired To show how this is done we ll use the Position screen as an example To customize the Position Screen first make certain it is showing by pressing the GPS key Next press the MENU key The first GPS menu Screen appears Press the key next to the CHANGE POSI TION DISPLAY label The unit returns to the Position Screen 3 6 0 8 8 5 with a black box around the S
15. the key next to the 5 CHANGE UPPERLIMIT was 45 1 siento 2 2241 key LMS 350A erases m below 46 7 7 To change the lower limit sim ply repeat the above steps but press the key next to the CHANGE LOWER LIMIT la bel Now enter the desired low er limitand press the ENT key The LMS 350A erasesthe low er limit menus and changes the lower limit to the one you specified If you make a mistake while entering a limit simply press the CLR key to erase the numbers To exit from either the upper limit or lower limit entry screen simply press the CLR key again ZOOM Enlarging or zooming the picture is a common method used to show small detail and fish signals The LMS 350A gives you two different zoom sizes plus a split screen zoom option The zoom operation and adjust ment is different in the automatic and manual modes ZOOM AUTOMATIC MODE To zoom the display in the automatic mode first press the ZOOM key All targets on the display are enlarged four times normal size automatically The menus shown at the top of the next page also appear 17 next to the RESET ALL GROUPS label Turn the zoom feature on or off by pressing the key adja cent to the OFF ON label Pressing the key adjacent to the 2X 4X label enlarges ech oes from two times to four ee E times their normal size To switch between the split screen zoom and full screen
16. zoom press the key adjacent to the SPLIT FULL label The screen instantly splits into two sections All targets on the left are shown at four times the size of the ones on the right If you switch to the 2X zoom mode echoes on the left side of the screen are shown at twice the size as the ones on the right The echoes that scroll across the screen are the exact same echoes on both sides of the screen They re simply enlarged on the left side This feature tracks the bottom keeping it on the display at all times when the automatic feature is on Once you ve set the zoom as desired press the CLR key to erase the menus ZOOM MANUAL MODE When you press the zoom key while the unit is in the manual mode the screen shown below appears All of the menus on this screen work identically as described above However one additional menu item is shown when the unit is in the manual mode ADJUST To adjust the zoom press the key adjacent to the ADJUST label A screen similar to the one below appears A zoom bar and adjust arrows appear on the screen The echoes on the left side of the screen are the ones that appear between the top and the bottom of the zoom bar Press the up or down ar row keysto move the zoom bar up or down As you adjust the zoom bar the echoes move on the left side of the screen atthe same time The zoom adjust menus will automatically clear a few seconds after you ve pressed the last key Remem ber the
17. AND GPS 35 MENU 6 35 ADJUST KEEL OFFSET 35 CALIBRATE SPEED 36 BATTERY BACKUP 237 TRANSDUCERS AND CONE ANGLES 38 FISH ARCHES 39 SONAR TROUBLESHOOTING 40 WINDOWS GROUP SUMMARY WINDOWS SUMMARY INTRODUCTION The LMS 350A is a high quality wide screen sonar with performance that is second to none in its class Using menu features and soft key operation the LMS 350A is also one of the easiest to use sonars that Lowrance has ever built The wide ClearVision screen shows the underwater world with high resolution and detail The display and keyboard are also lighted for night operation The LMS 350A also has digital depth boat speed surface water temperature and distance travelled log displays requires an optional ST T speed temperature sensor If you purchase and install a LGC 1 GPS module the LMS 350A can show position and navigation information Utilizing Rockwell s NavCoreV technology this GPS receiver is second to none in it s class MOUNTING Bracket Mount TheLMS 350A can be mounted on it s gimbal bracket or in dash mounted Brackets are supplied for both configurations however if the dash is thicker than 1 2 a special bracket will have to be purchased to mount the unit in the dash You can install the LMS 350A on its bracket in any convenient location provided there is clearance behind the unit when it is tilt
18. Alarm to Turn Zone Alarm On adjust the zone alarm The fish alarm doesn t have an adjust ment It s either on or off Set Zone Alarm Turn Fish Alarm The following section describes each sonar alarm and its limits FISH ALARM Use the fish alarm for a distinctive audible alarm when fish or other suspended objects are detected by the Fish I D feature A different tone sounds for each fish symbol size shown on the display To turn the fish alarm on press the MENU key then press the key next to the Adjust Alarms label The screen shown above appears Now press the key next to the Turn Fish Alarm On label To turn the fish alarm off repeat the above steps The label on the Alarms menu now reads Turn Fish Alarm Off Press the key next to that label to turn the fish alarm off 22 DEPTH ALARMS The depth alarms sound atone when the bottom signal goes shallower than the shallow alarm s setting or deeper than the deep alarm s setting For example if you set the shallow alarm to ten feet the alarm will sound a tone if the bottom sig nal is less than ten feet It will continue to sound until you mute it or until the bottom goes deeper than 10 feet The deep alarm works just the opposite It sounds a warning tone if the bottom depth goes deeper than the alarm s setting Both depth alarms work only off the digital bottom depth signals No other targets will trip these alarms These alarms can be used at
19. LMS 350A won t track 36 9 39 9 42 9 48 9 51 9 p the bottom when it s the manual mode MENU PAGE 1 CHART SPEED The rate echoes scroll across the screen is called the chart speed It s adjustable by first pressing the menu key then pressing the key adjacent to the Adjust Chart Speed label The chart speed menu appears on the right side of the screen Increase the chart speed by pressing the right arrow key or decrease it by pressing the left arrow key The percentage of chart speed in use changes as the arrow keys are pressed The bar chart also gives a graphical indica tion of the chart speed You can see the change on the Sse on the chart record as you made the adjustment press the CLR key to erase the menu To stop the chart press the key adjacent to the STOP label in the unit s lower left corner To start the chart press the key next to the START label GRAYLINE GRAYLINE lets you distinguish between strong and weak echoes It paints gray on targets that are stronger than a preset value This allows you to tell the difference between a hard and soft bottom For example a soft muddy or weedy bottom returns a weaker signal which is shown with a narrow or no gray line A hard bottom returns a strong signal which causes a wide gray line If you have two signals of equal size one with gray
20. WPT Units of measure are set in menu WINDOW 9 PLOTTER You may set any Plotter Parameters independently from the menu WINDOW 11 STEER HALF WINDOW This window will show how you are navigating toward you WPT WINDOW 13 au Summary NAVIGATION SUMMARY Displays all navigation data needed to navigate Units of measure are set in menu WINDOW 15 Zoom is independent in any chart window range sens gray SCC and noise rejection are common to all windous WINDOW 16 Prey gt 0 Next iE 12 Exit _ 24 FASTRAK This takes the 28 SONAR echoes and displays then like a J z 48 vertical flasher 60 WINDOW 18 Prov Shallow OFT Next Deep 100 Exit X Anchor ALARM LIMITS This window shows the current alarn settings Limit settings are set in menu 0 1041 WINDOW 20 49 HALF CHART Zoom is independent in chart window Other settings are common to all DEPTH SPEED amp LOG One window of four digital instruments nits of measure set in menu BATTERY VOLTAGE This window displays the battery voltage as supplied to this product WINDOW 21 LMS 350A GPS OPERATION IMPORTANT YOU MUST HAVE THE OPTIONAL LGC 1 GPS MODULE ATTACHED TO THE LMS 350A TO USE THE POSITION AND NAV
21. a waypoint is recalled except COG and Positioin which are always active These displays also can be customized See the Plotter Menus section for more detail PLOTTER CURSOR The plotter cursor can help you determine the latitude longitude of a waypoint or event marker To use it press the up or down arrow key while the plotter is displayed A screen similar to the one below appears Two new lines appear on the screen These are the plotter cursor lines The latitude longitude position ofthe plotter cursor notyour present POSITION position shows at the top of the 36 09 044 screen along with the distance 35 and bearing from your present position to the intersection of the cursor lines Use the arrow keys to move the cursor lines to the desired location To erase the cursor lines press the CLR key This also will erase the 63 cursor position distance and POSITION bearing displays at the top of the screen 8 PLOTTING WITH WAY POINT Using the plotter with a recalled waypoint or route is an easy way to see the effects of wind and current on your boat It also simplifies navigation To use the plotter in this manner first recall a waypoint or start a route See the Waypoint Recall section for more information Then press the PLOTTER key A screen similar to the one above appears The S is your starting location This was your position when you recalled the waypoint The
22. also puts your changes into effect Correction Offsets Lat Offset Lon Offset U 0 00 068 To turn these changes off re turn to this screen and press the key next to the PCF OFF SET OFF ON label Remem ber Presetting the unit also erases any PCF offset thereby turning it off 87 LMS 350A GPS RECEIVER SPECIFICATIONS GPS Module Dimensions 2 5 H x 4 1 W x 7 D Channels Five Parallel Four continuous for position All satellites in view tracked Update rate One second Maximum accuracy achievable with Standard Positioning Service Position 2 27 25 meters CEP sa Et ga 0 25 meters sec RMS Without SA PDOP 6 0 NMEA 0183 SENTENCES RMB eds Minimum Recommended Sentence Part B Minimum Recommended Sentence Part C Present Position Latitude Longitude Autopilot Steering Data Water Depth MTW Water Temperature VW isnt Speed Through Water KPH VLW Distance Travelled LOG NM 88 This page intentionally left blank 89 LITHO IN U S A 988 0133 01
23. black is negative or ground Make certain to attach the in line fuse holder to the red lead as close to the power source as possible For example if you have to extend the power cable to the battery or power buss attach one end of the fuse holder directly to the battery or power buss This will protect both the unit and the power cable in the event of a short The LMS 350A uses a 3 amp fuse IMPORTANT Do not use this product without a 3 amp fuse wired into the power cable Failure to use a 3 amp fuse will void your warranty If you re installing an optional speed temperature sensor read the speed temperature sensor s installation manual for mounting instructions Route the sensor s cable to the LMS 350 s power cable and plug it into the connector marked SPEED TEMP CABLE TO P CONNECTOR ON ACCURA GPS MODULE TO SPEED TEMP SENSOR TO 12 VOLT NMEA BATTERY INTERFACE LMS 350A POWER CONNECTIONS 3 The white wire is fora NMEA interface LMS 350A sends data to another electronic navigation devices through the white wire It receives data from a differential DGPS beacon receiver through the green wire If the white and green wires are not used tape their ends so that they cannot short To connect a device to the LMS 350 s NMEA output white wire attach a shielded twisted pair cable from the device s NMEA to the white wire on t
24. days a year Basically the system works by using a constellation of satellites orbiting Earth 11 000 miles in space There will be 21 satellites in orbit when the system is fully operational Three more satellites will act as spares for a total of 24 When all satellites are in place at least four of them will be in view nearly anywhere on Earth twenty four hours a day The GPS receiver requires at least three satellites to give a 2D fix A 2D fix is your position in latitude longitude A 3D fix is your latitude longitude plus altitude When it locks on to at least four satellites it displays a 3D fix It takes three satellites to determine position As the receiver locks on to each satellite it calculates the distance from the satellite by measuring the length of time it takes the radio signal to reach it Each satellite has an extremely accurate clock that tells the receiver when the radio transmission started The receiver compares that time against its own clock thus it knows how long it took the radio signal travelling at the speed of light to reach it If you know time and speed then you can calculate distance Once you have this from three satellites then the receiver can determine position 53 ACCURACY You may have heard tales of extraordinary accuracy from GPS receivers The DOD requires accuracy of 10 to 15 meters from the satellite system However only the military gets this precision The way the mil
25. flashing circle with a cross is your present position The flag with a number inside is the destination recalled waypoint The number inside the flag is the recalled waypoint number In this example waypoint number 10 is the destination The dotted line is the shortest most direct course from the starting point to the destination Follow this line to get to the waypoint The arrival alarm is automatically set to sound a tone when you come within a preset distance to the destination when you recall a waypoint See the section on alarms for more information about the arrival alarm PLOTTER MENUS Pressing the MENU key while the plotter displays gives you a new set of menus that relate only to the plotter There are two pages of plotter menus PLOTTER MENU PAGE 1 CLEAR PLOT Clear Plot clear or erase the solid track Set Range line from the screen use the Clear Plot menu selection The plotter will continue to draw your track after this key is pressed starting from your present position SET RANGE Use the Set Range menu to change the plotter s range or distance across the plotter s display The range is 1 statute mile when the LMS 350A is turned on for the first time The available plotter ranges are 1 2 5 1 2 5 10 20 50 and 100 miles This lets you zoom to see small variations in your course or zoom out to see your starting position present position track course and des
26. int the LMS 350A To view this menu press the Menu key then press the key next to the More label until the fifth menu page CODE VERSION YLSA appears Now press the key next to the System Informa tion label A screen similar to the one at right appears To return to the sonar screen press the key next to the Exit label 34 LOWRANCE ELECTRONICS LMS 350 COPYRIGHT 1993 PRESET SONAR AND GPS The LMS 350A has a built in memory that saves all settings such as sensitivity chart speed keel offset speed calibration and more Virtually all settings except for waypoint and route information is saved in this memory Waypoints icons and routes are saved in a separate memory Therefore every time you turn the unit on the settings are exactly as you left them However you can return the LMS 350A to it s factory settings using the preset feature This returns all sonar and GPS receiver settings at the same time To use this feature press the MENU key then press the key next to the More label until the fifth menu page appears Next press the key adjacent to the PRESET SONAR AND GPS label The screen will clear and return to the sonar display with the factory settings MENU PAGE 6 ADJUST KEEL OFFSET The keel offset feature lets you compensate for the transducer s location Since this sonar uni measures the water depth from the face of the transducer there can be a significant difference between the actua
27. is a temporary waypoint It s erased when the unit is turned off or if it s preset PLOTTER UPDATE The plotter shows your track by drawing a solid line behind your present position The track is updated once every instantly when the unit is turned on for the first time However ngon re distance the track line may end prematurely due mmm 7 to the limited number of dots Instant available that plot the track Using a longer update time To change the update rate press the MENU key while the unit is in the plotter mode then press Current the key next to the More la K 20 Seconds Update Rate bel Now press the key next to INSTANT the Plot Update Rate label The screen shown at right ap pears The available plot up date times are Instant 2 5 10 and 20 seconds Simply press the key next to the desired update time The LMS 350A immediately returns to the plotter screen using the new time 2 Seconds 10 Seconds POSITION 36 09 066 GRID LINES 95 50 637 The plotter can show latitude longitude grid lines by pressing the key next to the Set Grid Off On label on the second plotter menu page To turn the grid lines off repeat the previous step 67 SELECT UNITS OF MEASURE The LMS 350A can display dis tance in miles kilometers or nautical miles velocity in miles per hour kilometers per hour or knots bearing in degrees magnetic or true altitude in feet
28. location press the EVENT MARKER key then select an icon The LMS 350A places the icon at the intersection of the plotter cursor lines To erase the cursor lines press the CLEAR key Erasing the Icons Although you can place icons on the plotter individually you SELECT ICON them GROUP TO ERASE You have to erase the whole group of icons For example if 3 Ta Te you ve place 20 fish symbol ALL ICONS IN icons erasing one of them 1 erases all 20 To erase icon first press the EVENT MARKER key Next press the key next to the DELETE ICON BANK label The screen shown above appears Now select the group of icons that you wish to erase by pressing the key next to the desired icon After pressing the key the LMS 350A erases all of the selected icons from the plotter WAYPOINT NAVIGATION HOW TO SAVE A WAYPOINT Waypoints are locations on the earth s surface that you wish to go or return to Waypoints are useful for marking shipwrecks hot fishing spots and other fishing or navigation locations Storing waypoint s in the LMS 350 s memory makes it easy to return to any pointin the world by simply pressing a few buttons The LMS 350A can store up to 200 waypoints You can store your present position as a waypoint or enter latitude longitude positions as waypoints 70 Quick Save Feature The LMS 350A lets you save your present
29. modify windows mode Remember you can always return to the full screen sonar mode by pressing the SONAR key in the bottom left corner of the LMS 350A To switch back to your customized screen from the full screen sonar simply press the WINDOWS key then use the down arrow key to switch to the group you customized NOTE The LMS 350A saves all window changes in memory It keeps these changes even if power is turned off However a preset does erase all window changes and returns to the standard windows RESETTING ALL GROUPS To return all of the groups to their factory settings without turning the unit off and on again press the WINDOWS key then press the MENU key then press the key adjacent to the MAIN MENU label Now press the key adjacent to the RE PROGRAM A GROUP label Finally press the key SONAR OPERATION AUTOMATIC When the LMS 350A is first turned on the Automatic fea ture is enabled This is indi cated by the word AUTO at thetop ofthe screen The Auto matic feature adjusts the sensi tivity and range so the bottom signal is displayed in the lower half of the screen at all times 36 48 50 Toturn Automatic off first press the AUTO key A menu ap pears at the bottom of the screen above the left and right arrows Press the left arrow key to switch to the manual mode The letters Man ap pear in the upper left corner of the display ind
30. off above steps The label on the fourth menu page now reads Turn Depth Lines Off Press the key next to that label The LMS 350A returns to the sonar screen MENU PAGE 5 ADJUST CHART SURFACE CLARITY Level of ASP Off High The markings extending down ward from the zero line on the chart are called surface clut Preset SONAR and GPS ter These markings are caused by wave action boat wakes temperature inversion and other natural causes System Information The Surface Clarity Control SCC reduces or eliminates surface clutter signals from the display SCC varies the sensitivity of the receiver decreasing it near the surface and gradually increasing it as the depth increases The maximum depth that SCC will affect is 7596 of the selected depth range For example on a 0 SURFACE CLUTTER 60 foot range with maximum 27 5 asp SCC surface clutter will be re 47 77 duced down to 45 feet ICI marty There three levels of SCC 24 available on the LMS 350A low medium and high When it s n 36 turned on for the first time the 4 SCC level is low To change it a until the fifth menu page ap pears Now press the key adja cent to the Surface Clarity label until the black box is on the desired SCC level Press the key next to the EXIT label when you re finished 33
31. or meters and time in 12 hour or 24 hour format To change any these first press the MENU key then press the key adjacent to the More label Now press the Altitude key next to the SELECT UNITS OF MEASURE label The screen shown at left ap pears The black box on each line shows the unit of measure currently in use In the screen shown below the units of mea sure are in statute miles for distance miles per hour for velocity degrees magnetic for bearing altitude in feet and time is in the 12 hour format a m p m Press the key next to the unit that you wish to change For example press the key next to the Distance label twice to switch from miles to kilometers This moves the black box two times from the MI to the KM When you have the units of measure set as desired press the key next to the EXIT label BACK LIGHT ON OFF To turn the back lighting on press the MENU key then press the key next to the More label Now press the key nextto the Backlight On Off label This moves the black box from OFF to the ON position and turns the lights on To turn the backlights off repeat these steps 68 EVENT MARKER The LMS 350A can place event markers or icons on the plot ter to mark fishing spots shal low water or other special lo cations There are five different icons to choose from and there 100 of each icon for total of 500 You can place each DELE
32. or targets Bottom echo disappears at high speeds or erratic digital reading or weak bottom echo while boat is moving 1 The transducer may be in turbulent water It must be mounted in a smooth flow of water in order for the sonar to work at all boat speeds Air bubbles in the water disrupt the sonar signals interfering with its ability to find the bottom or other targets The technical term for this is Cavitation 2 Electrical noise from the boat s motor can interfere with the sonar This causes the sonar to automatically increase its Discrimination or noise rejection feature This can cause the unit to eliminate weaker signals such 41 as fish or even structure from the display Try using resistor spark plugs or routing the sonar unit s power and transducer cables away from other electrical wiring on the boat No fish arches when the Fish ID feature is off 1 Make certain transducer is pointing straight down This is the most common problem if a partial arch is displayed See the Fish Arch section in your owner s manual for more information 2 The sensitivity may not be high enough In order for the unit to display afish arch ithas to be able to receive the fish s echo from the time it enters the cone until it leaves If the sensitivity is not high enough the unit displays the fish only when it is in the center of the cone 3 Use the Zoom feature It is much easier to display fish arches when zoomed in on a sma
33. receiv ing data from the transmitter and is connected properly to the LMS 350A a screen simi lar to the one shown at right appears 81 This page shows the station ID number its frequency and bit rate the health of the station 0 best 5 worst signal strength the higher the num ber the better and the signal to noise ratio SNR The high er the SNR number the better The lower half of the screen shows statistics for each of the receiver s five channels This includes the satellite number PRN its status STAT the User Differential Range Error UDRE Time status TIME and if SA Selective Availablity is on or off The UDRE is the range error from your position to the satellite If there is an OK in this field then the range error to that satellite is 8 meters or less 68 percent of the time For more information read your beacon receiver s manual TRUE and MAGNETIC POSITION True and magnetic north are not the same True north is the top of the world It s where all lines of longitude converge Magnetic north is the location our compasses point It lies several hundred miles to the south of true north at a location in Canada Charts are usually laid out according to a Mercator projection that uses true north If you plot a course on a chart using the Mercator projection you ll either have to convert magnetic to true or use true readings The LMS 350A can display navigation information in mag
34. the percent maximum calibration change that is needed to make is 99 the LMS 350 s speed display Press CLEAR to start over match your actual speed For Press ENTER uhen example if the LMS 350 s finished speed display is five percent slower than your actual speed then use a positive five percent If the LMS 350 s speed display is five percent faster than your actual speed then use a negative five percent speed calibration Press the key next to the Calib label to change the factor from positive to negative When you have the speedometer calibrated press the key next to the Exit label to return to the sonar screen BATTERY BACKUP The LMS 350A saves all system settings such as windows units of measure alarm settings and more in memory that is powered by an internal battery This keeps the memory alive while the unit is turned off The LMS 350A gives you the ability to turn this battery on or off Turning it off causes the LMS 350A to forget all system settings each time you turn the unit off This in effect presets the uniteach time Calibrate Speed it s turned off Ad just Keel Offset isable Battery Backup To turn the battery backup off or on again press the MENU key until the screen shown at right appears Nowpress the key next to the Disable Battery Backup label The unit returns to the last used sonar GPS windows or plotter screen with the battery turned off To turn it on again repeat
35. to WPT Units of measure are set in menu WINDOW 6 47 DEPTH FEET 90 5 SHALLOW DEEP ALARM ALARM OFF OFF DIGITAL DEPTH This window displays water depth and depth alarms Depth alarns and units of measure are set in the window menu WINDOW 1 SPEED LOG MILES DIGITAL SPEED AND LOG This window displays boat speed and distance log determined bu a paddle wheel Units of Measure are set in the window menu WINDOW 3 COURSE OVER GROUND Course over Ground Units of measure are set in menu WINDOW 5 006 SPEED COURSE OUER GROUND Shows Both Speed and Course over ground Units of measure are set in menu WINDOW 7 DIG BRG DISTANCE TO GO BEARING TO WPT Shows the Distance to WPT as well as Bearing to WPT Units of measure set in menu WINDOW 8 ALTITUDE FT MID ALTITUDE CROSSS TRACK ERROR Shows Altitude as well as your cross track errow to your WPT Units of measure are set in menu WINDOW 10 GPS POSITION HALF WINDOW Em This window will show Next the current position Exit 36 09 055 95 50 429 WINDOW 12 SATELLITE INFO HALF WINDOW This window will show all satellite information WINDOW 14 48 unc MPH VELOCITY MADE GOOD TIME TO 60 Shows Velocity made good toward your WPT as well as the time to go to your
36. units of measure are in feet for the depth temperature in degrees Fahrenheit speed is in statute miles per hour and log is in statute miles Press the key adjacent to the unit that you wish to change For example press the key next to the Depth label two times to switch from feet to meters This moves the black box two times from the FT to the When you have the units of measure set as desired press the key next to the Exit label CLEAR DISTANCE LOG If the optional speed temperature sensor is attached to the LMS 350A it starts counting distance as soon as the unit is turned on It saves the distance in memory even when the unitis turned off To resetthe distance log to zero press the MENU key then press the key next to the More label until the Clear Distance Log label appears then press the key adjacent to that label U 0 0 45 477 DEPTH LINES 45 41 ates oa dro Medie C The LMS 350A prints depth 2 77 lines across the display that K corresponds to the scales on X Da MUN 24 the right side of the screen as shown on the screen at right To turn the depth lines on first press the MENU until the fourth menu page appears Now press the key next to the Turn Depth 32 Lines On label A screen similar to the one shown at the bottom of the previous page appears To turn the depth lines
37. Drill the holes then replace the cleats on the module and fasten them to the mounting surface with 5 mm 10 screws Route the cable to the LMS 350A CLEAT DRILL FOUR PLACES GPS MODULE CLEAT GASKET x Pole Mount First thread the pole mounting adapter onto the mounting pole or ratchet base Align the pole mounting adapter so the module will face the bow of the boat Install and tighten the set screw into the pole mounting adapter and tighten it securely This should prevent the GPS module from unscrewing from the pole Place the gasket onto the pole mounting adapter Now attach the cable to the GPS module and pass the cable through the gasket pole mounting adapter and pole Set the GPS module on top of the pole mounting adapter and align the four threaded holes in the module with the holes in the pole mounting adapter Using the four stainless steel 5 mm screws and lock washers supplied with the LMS 350A attach the pole mounting adapter to the GPS module This completes the assembly GPS MODULE Aa 2 POLE MOUNTING ADAPTER Uf N If the pole or mast you re using isn t hollow or if the hole the middle of the pole is too small for the connectors use the cable mounting adapter supplied with your unit Thread the cable mounting adapter into the GPS pole mounting adapter Then thread the pole into the c
38. IGATION FEATURES WARNING USE THIS PRODUCT ONLY AS AN AID TO NAVIGATION A CAREFUL NAVIGATOR NEVER RELIES ON ONLY ONE METHOD TO OBTAIN POSITION INFORMATION CAUTION The LGC 1 GPS receiver like all GPS navigation equipment will show the shortest most direct path to a 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 travelling to a waypoint but will also visually check to make certain a Clear safe path to the waypoint is always available NOTICE As of this writing the Department of Defense DOD has not declared the GPS navigation system operational The system is still in a testing phase Satellites can be turned off or accuracy can be degraded at will by the system operators Remember that the LMS 350A or any GPS receiver is only as accurate as the system it s using All features and specifications subject to change without notice All screens in this manual are simulated 51 GPS TABLE CONTENTS cdm edel 53 ACCURACY 54 THE LOWRANCE GPS MODULE 54 GETTING STARTED INITIALIZATION 55 CHANGE POSITION ec a 56 CHANGE ALTITUDE cnin ier reete nat es tr rcr da die dea Feet eet
39. Now press the key next to the on Offset E 0200000 PCF Offset label The screen shown at right appears Now press the key adjacent to the Change Offset label to enter the correction factor for your location The screen shown at the top of the next page appears Remember this is the difference between the location shown on the present position display and the position shown on the chart Use the arrow keys to move the black box to the number that you wish to change in the latitude then enter the numbers Press the key next to the Latitude 5 to change the latitude from north to south if necessary 86 Press the key next to the Ac Position Correction Facto cept Offset label when you ve entered the desired latitude off OTET set Repeat this procedure to Lat Offset M NO DD DDD change the longitude In this Lon Offset E 0 00 000 example we have entered 0 degrees 012 minutes north latitude and 0 degrees 068 minutes east longitude as the PCF offset That is the differ ence between the present po sition shown on the unit and our position shown by the chart In other words our position shown on the unit is 0 012 minutes north and 0 068 minutes east of the position shown on the chart After you ve entered the desired offset press the key next to the PCF Offset OFF ON label This turns the PCF correction factor that you entered on To leave this screen press the key next to the Exit label This
40. T ROUTES eee CREATINGIA ROUTE e NAME A ROUTE ee ret ceti fee cecidi rd sti d en eee ERE a e ri Pee ridus WAYPOINT SELECTION 75 FOLLOWING ROUTE 76 CANGEL NAVIGATION iiti retenta ta sta cesta eR a 77 MODIFYING A ROUTE tert ec trie reri ena n n ente 77 ERASING A ROUTE 77 GPS ALARMS 78 ARRIVALALARM M X 79 XTE GROSS TRACK EHBOR ALARMI tecti occi ttt een 79 ANCHOR ALARM CHANGING GPS SETTINGS SELECT rzuscic E T DGPS SETUP TRUE AND MAGNETIC POSITION PRESE e 83 etr te ne ertet eme 83 GPS MODULE SELF TEST 84 GPS SIMULATOR 85 ir ER IRIS Hae 86 SPECIFICATIONS 88 GPS HOW WORKS The Global Positioning System GPS is the best approach to navigation that has ever been devised Conceived by the Department of Defense DOD and the United States military the GPS system is an answer to their needs of 24 hour global positioning 365
41. TE ICON BANK icon individually however you can t erase a single icon once you ve placed it To erase an icon you have to erase all of the icons in that group To place an icon press the EVENT MARKER key The screen shown above appears Now select one of the five icons shown on the left side of the screen by pressing the key next to the desired icon As soon as you press the key the LMS 350A places the icon at your present position This icon always stays in this location It s saved in memory so it will always show on the display even if the unit is turned off and on again Note When you place an icon first make certain the icons are on When the LMS 350A is first turned on or after a preset the icons are automati cally turned on However if you turn the icons off using the Set Icons feature on the first plotter menu screen then the icons won t show when you place an icon The unit will place the icon however it won t show until you turn the icons on Using the Event Marker with the Cursor Normally when you select an icon it s placed on the plotter at POSITION your present position However you can place an icon any where on the plotter using the cursor To do this first press one of the arrow keys This makes the plotter cursor lines appear on the display Now move the lines to the desired position onthe display by press ing the arrow keys When it s at the desired
42. The LMS 350A has three GPS alarms One is an arrival alarm that sounds when you come within a preset distance to a waypoint Another is a cross track error alarm that sounds when you move off course more than the alarm s setting The fem Adjust 00 last GPS alarm is an anchor ON 03d Adjust 100 alarm that sounds when you i move outside a preset radius Adjust 010 Allofthese alarms p OFF tically _fmchor ON ya Adjust 0 10 To adjust a GPS alarm first press the MENU key then press the key next to the Alarms label The screen shown at right appears Now press the key next to the desired alarm s label In this example the Arrival alarm is set Pressing the key moves the black box from OFF to Adjust A new box appears at the bottom of the screen as shown at the bottom of this page Using the numbered keys enter the desired alarm trip distance In this example we re setting the arrival alarm to sound an alert if we come within 0 20 nautical miles of a waypoint Once you ve entered the desired numbers press the key next to the Accept label The black box automatically moves to the ON position and the number you entered appears at the far right side of the alarm s label You can set any other alarm on this page or return to a navigation or plotter screen by pressing the key next to the Exit label To turn an alarm off simply press the ALARM key then press the key next to the a
43. The graph gives a visual indication of the sensitivity level The number above the arrows also shows the percentage of sensitivity in use Toincrease the sensitivity level press the right arrow key As you press the key the menu s bar graph will grow wider and the percentage will increase in value You can also see the difference on the chart record as it scrolls When the sensitiv ity is at the desired level re lease the key To decrease the sensitivity level press the key adjacent to the left arrow The bar graph and percentage will decrease When the sensitivity is at the desired level release the key When you reach either the maximum or minimum limit a tone sounds To turn the menus off press the CLR key or wait a few seconds and the menus will automatically disappear 15 RANGE Automatic When turned on for the first time the LMS 350A automatically places the bottom signal in the lower half of the screen This is called Auto Ranging and is part of the automatic function The range cannot be changed manually while the unit is in automatic RANGE Manual The LMS 350A gives you control over the range when it s in the manual mode There are two different methods used to change the range The first way changes only the lower limit by pressing the arrow keys On the screen shown below the lower limit is 60 feet The upper limit is zero The second method lets you change both the upper and lower lim
44. able mount ing adapter Route the cable down the outside of the pole GPS MODULE F c A E y EE mmm B CABLE MOUN UNG MOUNTING ADAPTER ADAPTER POLE POLE N LU a LOWRANCE LMS 350A SENS AUTOMATIC 1 2 3 Co ANT A 4 8 6 uu 7 8 9 A WAYPT 4 v LET ore J Ne SONAR GPS PLOTTER WINDOWS KEYBOARD The keyboard has keys arranged in a vertical column on the left plus a horizontal row at the bottom A ten key pad and arrow keys on the right side of the screen lets you enter and change data on the screen The keys in the left column are used for sonar and menu selections The menu key in the bottom left corner of the keyboard activates the first menu page The keys along the bottom of the screen are used to switch between the sonar optional GPS and windows modes SONAR Press this key to switch to the sonar display GPS The GPS navigation displays show when you press this key PLOTTER Press this key to show the GPS Plotter display WINDOWS This key gives you access to the windows mode which lets you customize displays SENS Press this key to adjust the unit s sonar sensitivity RANGE This key lets you adjust the sonar s range ZOOM The LMS 350A gives you 2X and 4X zoom capability with th
45. act the factory customer service department if the module fails the self test Do not attempt to use this product if it fails the self test To use the self test feature press the MENU key then press the key next to the More label Finally press the key next to the GPS Module Self Test label The screen shown at right appears To exit from this screen press the key next to the Exit label it Summary ow Order Ram GPS SIMULATOR igh Order Ram This feature placespositionand bre Process Test z Process Ram navigation data on all screens Interface including the plotter The unit VCO Test navigates a closed course It Sigmal h Sof tuare Version shows bearing and distance to Module Hae PASSED go course over ground and other information A recurring message appears alerting you that the simulator mode is en abled Don t navigate when the simulator is on To turn the simulator on press the MENU key then press the key next to the More label Finally press the key next to the GPS Simulator OFF ON label The simulator mode starts immediately To turn the simulator off either press and hold the OFF key or repeat the above steps 85 PCF OFFSET The GPS navigation system relies on complex mathematical calculations to determine your position based on satellite data and other factors One factor is the Earth s shape Since the Earth is not a true sphere variations
46. and the other without then the target with gray is the stronger signal This helps distinguish weeds from trees on the bottom or fish from structure GRAYLINE ON GRAYLINE OFF GRAYLINE is adjustable Since GRAYLINE shows the difference be tween strong and weak signals adjusting the sensitivity may require a different GRAYLINE level also The level chosen by the LMS 350A at power on is usually adequate for most conditions Experiment with your unit to find the GRAYLINE setting that s best for you To adjust GRAYLINE press the MENU key then press the key adjacent to the Adjust Chart Grayline label A screen similar to the one at right ap pears Now press the left arrow key to decrease the gray level Press the right arrow key to increase it The percentage of GRAYLINE in use changes as the arrow keys are pressed The bar chart also gives a graphical indication of the GRAYLINE level You can see the change on the screen both on the menu and on the chart record as you press the keys After you ve made the adjustment press the CLR key to erase the menu FISH I D The Fish I D feature identifies targets that meet certain conditions as fish The micro computer analyses all echoes and eliminates surface clutter thermoclines and other signals that are undesirable In most instances remaining targets are fish The Fish I D feature displays symbols on
47. display as shown above Two of these labels are window menus Pressing the key adjacent to one of the window menu labels gives you a menu with functions that relate only to that window For example if you press the key adjacent to the window menu label on the sonar chart window the screen will clear and you will have a new menu with selections such as ADJUST CHART SPEED and ADJUST GRAYLINE Other window menus let you change the so nar frequency or turn the Fish ID feature on To exit from a window menu press the key VIEWING WINDOWS OPTIONS To see all of the available win 5 1 9 dow options press the WIN SHALLOW DEEP DOWS key then press the DM big MENU key Now press the key adjacent to the MAIN MENU DIGITAL DEPTH label Finally press the key This window displays next to the VIEW ALL WIN ue ede DOWS label The screen at of measure are set in right appears the window menu The first window appears in the upper right corner of the screen A description of the screen shows inthe box at the bottom of the screen Now press the key adjacent to the NEXT label This changes the displayed window and description When you ve finished viewing the windows press the CLEAR key Window and Group Help MODIFYING GROUPS To modify or customize a group first press the WIN DOWS key then press the MENU key Now press the key adjacent to the MAIN MENU label atthe botto
48. e to name a route REEF 1 press the WAYPT key repeatedly until KEYS MAKE YOUR CHANGES PUSH the letter appears in the LU eras window Next press the right YOUR CHANGES arrow key to move the black box to the next letter position Now press the RANGE key The letter E appears on the screen Use the number keys to enter numbers Repeat this process until the entire name has been written on the screen Now press the key next to the Accept Name label The LMS 350A returns to the route menu You can now enter the waypoints used in the route Waypoint Selection If you ve named a route the black box should be on the 0 at the top of the waypointlist If not move the black box to the O using the up or down arrow keys Now press the numbered key of the waypoint you wish to go to first in the route For ex ample if you want waypoint Route 1 number 8 to be first press the Name REEF 1 8 key If you ve named the way ecrease RTE point it shows in the blank space to the right of the way point number Next press the key next to the Accept label The LMS 350A reverts to the menu shown at right Li 1 1 1 1 Li The cursor should now be on 75 the second waypoint line Now enter the waypoint number for the second waypoint in the route Press the key next to the Accept label Continue entering the waypoints until all of the waypoints have been enter
49. e a good location Attaching the pole mounting adapter lets you install the module on a one inch mast However for lightning protection the antenna shouln t be the highest part of the boat Surface Mounting With Access If you have access underneath the mounting surface use the gasket supplied with the GPS module as a template Drill four 5 5 mm 7 32 holes and one 17 mm 11 16 hole for the module s cable Attach the cable to the module and pass it down through the hole in the gasket and the mounting surface Use 5 mm screws flat washers and lock washers to fasten the GPS module to the mounting surface Route the cable to the LMS 350A 5 5 mm 7 32 17mm Hole 11 16 4 places Hole i 5 SCREWS 5 MM SCREWS CABLE Surface Mounting Without Access If you don t have access to the back side of the mounting surface use the cleats supplied with the LMS 350A Note This is assuming you can snake the module s cable to a location that is accessable A hole will still need to be drilled in the mounting surface for the cable Using the gasket as a template mark and drill the 17 mm 11 16 hole for the cable Attach the cable to the module and drop the other end of the cable through the gasket and down the hole Place the module on the gasket Slide the cleats onto each end of the module and using the cleats as templates mark four holes for 5 mm 10 mounting screws
50. e consisting of waypoints number 1 2 and 3 and you wish to change waypoint number 3 to waypoint number 5 Simply press the MENU key then press the key next to the More label then press the key next to the Save Edit Route label Using the keys next to the Increase or Decrease RTE labels se lect the route number that you wish to change The list of waypoints usedinthe route are shown beneath the route num ber and name Using the down arrow key move the black box to waypoint number 3 Simply use the num bered keys to change the way point from 3 to 5 Next press the key next to the Accept label You ve changed the waypoint from 3 to 5 Now press the key next to the Save RTE label Finally press the key next to the Exit label and you re finished Remember any part of the route can be changed at any time ERASING A ROUTE To erase a route first press the MENU key then press the key next to the More label Now press the key nexttot he Route Planning label Finally press the key nextto the Save Edit Route label The route menu appears 77 as shown above Now press the key next to the Increase RTE or Decrease RTE labels to cycle through the available routes After you ve selected the desired route press the key next to the ERASE RTE label This erases the route from memory Finally press the key next to the EXIT label This returns you to the GPS display GPS ALARMS
51. e finest navigation instruments on the market today We hope you ll enjoy it for many years to come The Lowrance LGC 1 GPS Module This GPS receiver is currently used in all Lowrance GPS receivers It s small rugged and fast The five channel design lets it track all satellites in view and acquire up to five satellites at one time It sends position information to the LMS 350A once every second By incorporating Rockwell s GPS receiver technology with Lowrance s state of the art design and manufacturing capabilities Lowrance brings to the consumer the most advanced line of GPS marine navigation systems available in the world in LE LOWRANCE 54 GETTING STARTED Initialization Power On In order for the LMS 350A to lock onto the satellites it must first find them If you simply turn the unit on and wait the unit will find the satellites by itself in 15 minutes or less This is called Cold Start If you let it find the satellites the time display will probably be wrong since it will be showing UTC time or the time at Greenwich England However all other naviga tion displays including the position display willbe correct You can set the time to your local time To speed up the satellite acquisition process you can initialize the LMS 350A or tell it where it is the first time it s turned on This initialization process is usually done only once and requires the following data 1 Present positi
52. ed for the route Then press the key next to the Save RTE label This saves your route in memory IMPORTANT You must select waypoints in the order they are to be used in the route In other words suppose you want a route that consists of waypoint numbers 1 3 and 5 However you wish to travel to 3 first then 1 and finally 5 In this case you must select waypoint 3 1 and 5 in that order when making the route FOLLOWING A ROUTE To follow a route press the MENU key then press the key next to the More label then press the key next to the Route Planning label Finally press the key next to the Recall Route label The screen shown below appears Route number one appears on the right side of the screen The list of waypoints used in the route are shown beneath the Route 1 route number and name If you Mame _ REEF 1 wish to recall a different route ecrease RTE press the key next to the In crease RTE or Decrease RTE label to cycle through the available routes 6 PALM COVE 21 MARKS DOCK D Select First Waypoint in After you ve selected the de Route sired route you llnoticeablack box surrounding the first way point in the route This is the starting waypoint box If you wish to start the route using the first waypoint in the route simply press the key nextto the Start Route label However if you wish to start the route using a different waypoint simply use the down arrow key to mo
53. ed for the best viewing angle Holes in the bracket base allow wood screw orthrough bolt mounting You may needto place a piece of plywood on the back of thin fiberglass panels to secure the mounting hardware Make certain there is enough room behind the unitto attach the power and transducer cables FRONT m SLOT BREAK OUT SLOT You will need to drill a hole in the dash for the power and transducer cables The smallest hole that will pass one power or transducer plug is one inch After the hole is drilled pass the transducer connector up through the hole first then pass the power cable down through it After the cables have been routed fill the hole with a good marine sealing compound Offset the bracket to cover the hole Route the power cable through the slot and break out one of the other slots in the bracket for the transducer cable IN DASH MOUNTING The LMS 350A can be installed in the dash with the supplied hardware if the dash is 1 2 thick or less Determining the dash thickness can be difficult however if you remove a gauge from the dash you can easilly measure the thickness Try this in an area that s close to the location that you wish to install the unit since the thickness can vary significantly in some boats Make certain there is clearance behind the dash for the unit and there is enough room to tighten the bolts on both sides of the unit pe 7 625
54. es and thousandths of a minute Not seconds Press the key next to the Latitude N S label to change the to a S if your latitude is south After you ve entered the latitude press the key next to the Accept Lat label The waypoint save menu reappears Next using the arrow keys move the black box to the longitude position and press the key next to the Change Lon label Now enter the longitude Make certain to add a zero to the longitude if it s less than 100 degrees For example if the longitude is 85 degrees then enter 085 Press the key next to the Longitude W E label to change it from west to east if necessary Press the key next to the Accept Lon label when you ve finished The save waypoint menu appears with the position you entered in the waypoint position box at the top of the screen If this position is correct press the key next to the Save WPT label _ Increase Save Name a Waypoint To assign a name to a way point first press the key next to the Increase WPT or De SE THE ALPHA KEYS OR THE NUMERIC 7 KEYS MAKE YOUR CHANGES PUSH crease WPT label to move EVENT MARKER ACCEPT THE CHANGE DR PUSH CLR TO ABORT through the list of waypoints YOUR CHANGES When the desired waypoint appears in the window press the down arrow key until the black box moves to the NAME position Now press the key next to the Change
55. essing the left arrow key decreases the contrast the right arrow increases it After setting the contrast for the best viewing angle press the CLR key to erase the menu or wait approximately ten sec onds and it will automatically erase See the Display Con trast section for more informa Light tion on this feature k 14 When the LMS 350A is first 48 turned the display will pear similar to the one at left 160 The word AUTOMATIC in 9 the upper left corner of the display indicates the automatic feature is on The digital bottom depth also showsin this box MENUS The LMS 350A uses menus extensively to guide you through the func tions and features of the unit The menu key accesses many of these features allowing you to customize the unit to your particular needs and water conditions Although you may have to leave one menu and enter another to reach the desired function all you have to do is press the key next to the More label to select the next menu To return to the sonar screen simply press the key next to the Exit label or press the CLR key HELP An extremely useful feature incorporated into the LMS 350A series is the Help menus Virtually every feature has a help menu label that when pressed gives one or more pages of text describing how to use that feature For example pressing the AUTO key brings up a menu lettin
56. f the level After you ve made the adjustment press the CLR key to erase the menu 27 TURN DIGITAL INSTRUMENT BOX OFF The digital box is displayed in the upper left corner of the full sonar screen It has the digital depth and automatic manual indicators To turn this box off press the MENU key then the key next to the More label then the key adjacent to the TURN DIGITAL INSTRUMENT BOX OFF label Repeat the above steps to turn the box on CONSTRUCT DIGITAL INSTRUMENT BOX The LMS 350A can display the depth speed surface water temperature and distance log in the upper left portion of the screen When the LMS 350A is first turned on only the depth is displayed You can turn each digital display on as desired or turn all of them off as desired To select the digital displays menu first press the menu key then press the key next to the More label Next press the key adjacent to the CONSTRUCT DIGITAL INSTRUMENT BOX menu A screen appears that is similar to the one below Now press the key adjacent to the desired display For ex ample to turn the temperature display on press the key adja cent to the Include Tempera ture label Once you do this the digital display in the corner ofthe screen will show the tem perature in addition to the depth Thetemperature menulabelnow shows Remove Temperature You can turn each display on or off individually Press the CLR key to exit from thi
57. 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 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 itis shooting through only one layer of fiberglass and that it is securely bonded to the hull Do NOT use RTV silicone rubber adhesive or Marinetex 2 Electrical noise from the boat s motor can interfere with the sonar This causes the sonar to automatically increase its Discrimination or noise rejection feature This can cause the unit to eliminate weaker signals such as fish or even structure from the display 3 The water may be deeper than the sonar s ability to find the bottom If the sonar can t find the bottom signal while it s in the automatic mode the digital will flash continuously It may change the range to limits far greater than the water you are in If this happens place the unit in the manual mode then change the range to a realistic one for example 0 100 feet and increase the sensitivity As you move into shallower water a bottom signal should appear 4 Check the battery voltage If the voltage drops the unit s transmitter power also drops reducing its ability to find the bottom
58. g you switch the unit into or out of the automatic mode A help label also appears on the screen Pressing the key adjacent to the help label gives you a description of how automatic works and how it affects different functions WINDOWS You can change the displays on the LMS 350A by using the windows feature This lets you customize displays to your own fishing or boating situations This feature gives you 22 different window screens The screens available in the windows mode are divided into two or more windows per screen Each screen of win dows is called a group Group A as shown at right has the digital displays in one window and the sonar chartin the other LOG backward For example press ing the down arrow key once shows the group B screen To return to the full sonar screen press the SONAR key Every one of the group screens can be modified to some ex tent For example press the MENU key while group A is displayed Three new labels To use the windows feature first press the WINDOWS key A screen similar to the one shown at left appears The menu on the right side of the screen lets you switch between the pages of displays These are lettered A through V Group A shows first Press the down arrow key to move forward through the screens Press the up arrow key to move TUM appear on the
59. han the digital sonar Select Sonar Frequency The LMS 350A chart s operating frequency is 192 kHz when it s first turned on To change frequencies first press the MENU key The menu shown above appears Next press the key adjacent to the Select Sonar Fre Chart Sonar 50Khz 192850Khz quency label The screen If 192850Khz is selected for the Shown at left appears hart Sonar both 192Khz and 50Khz This menu lets you change ill be operating The full screen the frequency of both the chart will be split with 5 Khz on the left and 192Khz the right chart and the digital sonar In this dual frequency mode all chart windows can independently Typically you should use the select either frequenc 192 kHz frequency in shallow water and the 50 kHz fre quency in deep water Now press the key adjacent to the desired frequency either 50 kHz 192 kHz or both 50 and 192 kHz split screen operation Note Only the chart can operate at both frequencies at the same time The unit will begin scrolling echoes across the display The frequency in use will also be displayed at the bottom of the screen NOTE The 192 kHz frequency for both the chart and digital sonar is enabled when the LMS 350A is turned on for the first time or after a preset This feature is saved in the battery backed up memory 25 CHART DUAL FREQUENCY OPERATION Sensitivity and Grayline adjust differently when the Dual Frequenc
60. he graph continues to operate nor mally FASTRAK gives you a rapid update of conditions di rectly under the boat This makes it useful for ice fishing or when you re fishing at an chor Since the unit is not mov ing fish signals are long drawn out lines anormal chart dis play FASTRAK converts the chart to a vertical bar graph To turn FASTRAK on press the MENU key then press the ro key next to the More label until the fourth menu page ap pears Now press the key adja cent to the Turn Chart Fastrak label To turn it off repeat the same steps The TURN FASTRAK OFF label appears on this page when Fastrak is on Press the key next to this label to turn it off ZEE 31 SELECT UNITS MEA SURE The LMS 350A can display the water depth in feet fathoms or meters surface water tempera ture in degrees Fahrenheit or Celsius speed in statute miles per hour kilometers per hour or knots and distance log in miles kilometers or nautical miles To change the units of measure press the MENU key then press the key next to the More label until the fourth menu page appears Now press the key adjacent to the Select Units of Measure label The screen shown below appears The black box on each line shows the unit of measure currently in use In the screen shown above the
61. he LMS 350 s power cable Solder the ground conductor of the twisted pair and the shield to the black wire on the power cable Do not connect the shield to the other device Use the green and black wires in the same manner to attach a DGPS recevier s output to the LMS 350 s input green wire See the other instrument s manual and the NMEA section in this manual for more information TRANSDUCER CONNECTIONS The LMS 350A has dual frequency capability It can operate at 50 or 192 kHz separately or at the same time The connection diagram below shows the proper method to attach the transducers to the LMS 350A See the transducer owner s manual for transducer installation instructions If dual frequency simultaneous operation is desired a 50 kHz transducer and the MY 2 transducer adapter cable must be pur chased separtately See page 18 for more information on dual frequency operation DUAL Q CONNECTOR ON FREQUENCY LMS 350A TRANSDUCER SINGLE FREQUENCY ADAPTER CABLE T CONNECTOR ON MY 2 LMS 350A 192 kHz 50 kHz TRANSDUCER TRANSDUCER 192 kHz or 50 kHz TRANSDUCER OPTIONAL GPS MODULE INSTALLATION The GPS module can be installed on a flat surface or with the supplied adapter on a pole Mount the module in an area that guarantees a clear view of the sky at all times In order for the module to receive the signals from the satellites it must not be obstructed An ideal location is on a cabin roof or deck The gunnels also mak
62. how navigation data to the position you were in when you first pressed the Man Overboard key not your present position Repeated pressing of the Man Overboard key does not repeatedly save your present position The unit only saves the position the first time the Man Overboard key is pressed To save a new Man Overboard postion you must first clear the old position by pressing the key adjacent to the DISABLE MOB label You can navigate to a waypoint using the Waypoint Recall feature however when you go back to the Man Overboard screen the AccuNavll stops navigating to the recalled waypoint and show navigation data to the Man Overboard location Remember saving the victim is the primary goal Try all options to rescue the person immediately after the accident happens Training and educa tion are also good accident preventatives The Coast Guard has excellentsafety courses Instruct all members on board your boat on safety procedures before leaving the dock Make certain all board know what to do before any emergency occurs GPS MODULE SELF TEST This feature tests the GPS module and returns a special code This code is of interest only to the service department However the LMS 350A interprets this code and displays astatus message This message is either MODULE HAS PASSED or MODULE HAS FAILED and shows at the bottom of the screen The current software version number also appears 84 near the bottom of the screen Cont
63. ical instrument trolling motor pump or radio try to isolate the problem You can usually re route the sonar unit s power cable and transducer cable away from the wiring that 42 is causing the interference VHF radio antenna cables radiate noise when transmitting so be certain to keep the 5 wires away from it You need to route the sonar 5 power cable directly to the battery to isolate it from other wiring on the boat If no noise displays on the sonar unit from electrical equipment then make certain everything except the sonar unitis turned off then start the engine Increase the RPM with the gearshift in neutral If noise appears on the display the problem could be one of three things spark plugs alternator or tachometer wiring Try using resistor spark plugs alternator filters or routing the sonar unit s power cable away from engine wiring Again routing the power cable directly to the battery helps eliminate noise problems Make certain to use the in line fuse supplied with the unit when wiring the power cable to the battery When no noise appears on the sonar unit after all of the above tests then the noise source is probably cavitation Many novices or persons with limited experience make hasty sonar installations which function perfectly in shallow water or when the boat is at rest In nearly all cases the cause of the malfunction will be the location and or angle of the transducer The face
64. icating the unit is in the manual mode To turn Automatic on press the AUTO key again then press the right arrow key Remember when the LMS 350A is in the automatic mode you have a limited adjustment range on the Sensitivity control and no control over the Range Zoom adjusts differently in automatic than manual also SENSITIVITY The sensitivity key on the LMS 350A controls the ability of the unit to pick up echoes A low sensitivity level excludes much of the bottom informa tion fish signals and other target information High sensitivity levels enables you to see this detail but it can also clutter the screen with many undesired signals Typically the best sensitivity level shows a good solid bottom signal with Grayline and some surface clutter When the LMS 350A is in the Automatic mode the sensitivity is automati cally adjusted to keep a solid bottom signal displayed plus a little more This gives it the capability to show fish and other detail However situations occur where it becomes necessary to increase or decrease the sensitivity This typically happens when you wish to see more detail so an increase in sensitivity is indicated The procedure to adjust it is the same whether the unit is in the automatic or manual mode To adjust the sensitivity press the SENS key The sensitivity adjust menu appears on the right side of the screen The sensitivity menu has left and right arrows plus a horizontal bar graph
65. is key AUTO This turns the automatic feature off and on WAYPT Press this key to save and recall waypoints 8 WAYPT QUICK SAVE Pressing this key instantly saves your position MENU Press this key to show the menus and gain access to most functions CLR This key clears menus and erases entries from the screen ENT This key is used to enter numbers and make selections ARROW KEYS These keys are used to make menu selections and to move objects on the screen ON The ON key turns the LMS 350A on OFF Press and HOLD the Off key to turn the LMS 350A off DISPLAY General The lights are turned on for approximately ten seconds when the LMS 350A is first turned on Menus appear at the same time To keep the lights on press the key adjacent to the Light label It controls the backlighting used on the display and keyboard If you don t want the lights on wait ten seconds and the lights will automatically turn themselves off The menus will also disappear after ten seconds or you can turn them off by pressing the CLR key on the left side of the zero 0 key The Metric label at the top of the screen works the same way Press the key adjacent to the Metric label to change the depth from feet to meters This also changes the temperature display to degrees Celsius speed to knots and log to kilometers The Display menu on the right side of the screen let you adjust the display s contrast for the best viewing angle Pr
66. itary keeps us and other unauthorized people from using the more precise system is coding In other words the data coming from the satellites is encrypted Civilian GPS receivers use C A Code It s accuracy is intentionally worse than the military s P Code In this manner civilian users worldwide can benefit from excellent position fixes Meanwhile the military keeps the most accurate system away from potential enemies Theoretically C A code can give accurate position fixes up to 15 meters This is more than adequate for most people However as of this writing the military isn t satisfied with C A s potential accuracy in the hands of the world So it s degrading it further with Selective Availability or SA This is small random errors intentionally added to the system so your accuracy will typically be within 100 meters Of course accuracy also depends on the angle of the satellite above the horizon signal to noise ratio the number of satellites tracked at one time the more the better and other factors The smallest ranges on the plotter may not be usable if the SA is high The present position symbol can move off the screen even while you re sitting still Don t let this discourage you however GPS by nature has much faster updates than other systems such as Loran and typically is much easier to use Accuracy even with SA on is still better than most other navigation systems You ve purchased one of th
67. key next to the Select NUEA DGPS label The screen on the previous page appears Press the key next to the desired beacon receiver The beacon receiver is selected now you ll need to set it up for the frequency and bit rate of the station you ll be using in your area Now press the key next to the Setup Beacon Receiver label The screen shown below appears The station frequency and bit Set Lat Lon Alt Time Date rate are shown on the right side Select NMEA DCPS of the screen Press the key adjacent to the INC FREQ to Select Units Measure increase the station frequency GPS COLD Start orthe DEC FREQ to decrease it Do the same for the bit rate Offset Note If you set the frequency to zero the Starlink MRB 2A will automatically change fre quencies and bit rates for new stations as you travel Otherwise you will have to manually change the frequency and bit rate when you move out of range of the current station When the station frequency and bit rate are adjusted to their proper settings press the key next to the EXIT label The LMS 350A returns to the last used GPS screen The letters DGPS appear next to the POSITION on all screens that show your present position showing that the beacon receiver is working To view the status of the beacon signal press the MENU key until the fourth menu page appears Now press the key adjacent to the Differential GPS Status label If the beacon receiver is
68. l water depth and what is displayed on the unit For example suppose you mount a bolt thru hull trans ducer on the bottom of the boat When you launch the boat you find that this location places the transducer three feet below the surface of the water Therefore the depth sounder always reads three feet shallower than the actual water depth In other words if the bottom is 50 feet deep the depth sounder will read 47 feet if the transducer is mounted three feet below the surface The difference between the depth sounder s reading 47 feet and the actual water depth 50 feet is called the keel offset In this example you will use a positive keel offset Adjust Keel Offset Calibrate Speed isable Battery Backup Another time you may wish to change the keel offset is if you want to know the bottom depth from the deepest part of the boat For example by careful measurment you find that the deepest part of the boat is four feet below the face of the transducer By setting a negative keel offset of four feet the sonar unit will show the bottom depth from the lowest part of the boat to the bottom 35 The digital depth display is the only sonar that is affected by the keel offset feature The chart will always show the distance from the face of the transducer To adjust the keel offset first press the MENU key then press the key next to the More label until the sixth menu page appears Now press
69. larm label until the black box moves over OFF 78 The following section describes each GPS alarm its limits ARRIVAL ALARM The arrival alarm sounds a tone when your position is within the alarm s radius of a waypoint For example the alarm sounds if you come within 1 mile of a recalled waypoint if the arrival alarm s setting is 1 mile The alarm is adjustable from 01 to 9 9 miles XTE ALARM The XTE cross track error alarm sounds a tone when your cross track error is greater than the alarm s setting Changing the XTE alarm also changes the XTE range on the steering screen The alarm is adjustable from 0 0 to 9 9 miles ANCHOR ALARM The anchor alarm sounds atone when the present position moves outside a preset radius For example if you set the anchor alarm to 1 nautical mile 600 feet then the alarm will sound if you move more than 600 feet from the location where you set the alarm It s adjustable from 0 01 to 9 9 miles CHANGING GPS SETTINGS For the fastest acquisition of satellites the LMS 350A must be initialized when it s turned on for the first time This is described at the beginning of the GPS section in this manual However if you need to change only one of the parameters such as time use the menu features in the CHANGE SETUP menu To do this press the MENU key then press the key next to the Change GPS Settings label Finally press the key next to the Set Lat Lon Alt Ti
70. lay to Distance Go Go DTG press the right arrow key two times To change an other digital box simply press the up or down arrow keys until the desired box s label is flashing Then use the right or left arrow keys to select the display 36 08 913 563 PLOTTER MENU 2 GOTO CURSOR When you re finished press the CLR key to exit As mentioned previously t he cursor lines can be used to place an icon or highlight a position When you use the cursor lines the position of the cross hairs on the display are shown at the top of the screen Pressing the key next to the GOTO CURSOR label onthe plotter menu causes the LMS 350A to show naviga tion and steering data to the position shown by the cross hairs This automatically turns the arrival alarm on also 66 use this feature first move the cursor lines to the desired location on the plotter screen Next press the MENU key Now press the key adjacent to the More label Finally press the key next to the Go To User Cursor label The unit returns to the plotter screen A waypoint flag appears on the screen numbered 0 that was the location of the cursor cross hairs when you pressed the key next to the Go To User Cursor label The digital displays on all screens will show navigation information to this new location This includes the position steering and plotter displays Re member this
71. ll range of water than a large one For example you will have much better luck seeing fish arches with a 30 to 60 foot range than a0 to 60 foot range This enlarges the targets allowing the display to show much more detail 4 The boat must be moving at a slow trolling speed to see fish arches If the boat is motionless fish stay in the cone showing on the display as straight horizontal lines NOISE A major cause of sonar problems is electrical noise This usually appears onthe sonar s display as random patterns of dots or lines In severe cases it can completely cover the screen with black dots or cause the unit operate erraticly or not at all To eliminate or minimize the effects of electrical noise first try to determine the cause With the boat at rest in the water the first thing you should do is turn all electrical equipment on the boat off Make certain the engine is off also Turn your LMS 350A on then turn off ASP Advanced Signal Processing There should be a steady bottom signal on the display Now turn on each piece of electrical equipment on the boat and view the effect on the sonar s display For example turn on the bilge pump and view the sonar display for noise If no noise is present turn the pump off then turn on the VHF radio and transmit Keep doing this until all electrical equipment has been turned on their effect on the sonar display noted then turned off If you find noise interference from an electr
72. m of the screen The screen shown at right ap pears Now press the key adjacent to the RE PROGRAM A GROUP label The screen Preset all Group shown below appears Select the letter of the group youwish to customize by press ing the key adjacent to the group s label If the label isn t shown on this page press the Select group key adjacent to the MORE label In this example the key 2222 2222 next to the GROUP label DEPTH FEET was pressed The screen 46 9 shown at the top of the next page appears window appears in OFF OFF the upper right corner of the screen Press the key adjacent to the NEXT WINDOW label to move through the windows If you reach the last window or if you wish to go backwards through the windows press the key next to the PREV WIN DOW label When the desired window is on the screen press the key next to the USE WINDOW label The screen clears placing the new window in the upper left corner of the screen If the new window takes up half the screen the unit will place it on the left side of the screen Continue with the window selections until the screen is filled The unit will stay in the windows mode using your new customized screen If you don t want to fill a screen and only use one two or three windows in a group simply press the key adjacent to the STOP label This saves the group and exits the
73. me Date label The screen shown below appears Using the menus on this menu pages you can change the Initial Position Time Date or Altitude without affecting any other initialization setting All of these menus work Latitude identically to the ones described Longitude W de 50206 i cs Altitude _ 650 the initialization section at ime 2 35 00 the beginning of the GPS sec Local Date 2 19 1993 tion After you make a change the unit returns to the GPS or plotter screen You may need to re initialize the unit if you move a long distance over 100 miles with the unit off In this example you would need to enter a new initial position to help the LMS 350A find the correct satellites quicker 79 SELECT NMEA The LMS 350A sends data out the white wire on the power cable according to standards set by the NMEA National Marine Electronics Association This allows the LMS 350A to send position depth and navigation information to listener units such as charting instruments autopilots and other marine instruments The LMS 350A uses the following NMEA data protocols NMEA 0180 and 0183 NMEA 0180 sends steering information only It s useful mainly for autopilots NMEA 0183 sends depth position steering soeed and more In order to use this feature the white wire on the power cable must be connected to the NMEA data input on the other instrument See the installation section in the f
74. netic or true When it s turned on for the first time magnetic is used To switch to true press the MENU key while a GPS screen is displayed Next press the key next to the Change GPS Settings label Now press the key next to the Select Units of Measure label Now simply press the key next to the Bearing label This moves the black box from to TRU Press the key next to the Exit label when you re finished 82 PRESET The Preset feature returns all sonar and GPS units to their original factory settings This resets the units of measure speaker volume display contrast and more This doesn t erase any waypoints or routes however To preset the unit press the MENU key until the Preset Sonar and GPS label appears Press the key next to that label The menu screen disappears and the LMS 350A returns to the GPS position screen All units will be returned to their factory settings MAN OVERBOARD One of boating s most terrifying events is having a friend or family member fall overboard This situation can be deadly on any body of water fresh or salt It s particularly dangerous at night or if you re out of sight of land Of course the first thing to do is remain calm and try all standard safety measures to try and rescue the person If you lose sight of the person you can use the LMS 350A to help start a search pattern Once back at the helm after initial rescue efforts have failed press
75. nge all of the settings on this page to their correct values In other words you can t simply enter your present position and have the unit find the correct values by itself CHANGE POSITION Use a chart to determine your position if you don t know it The latitude longitude that you enter doesn t have to be extremely accurate Typically if you enter a posi Latitude 35 50008 tion within one degree of your Longitude E 0 00 000 present position the LMS 350A Altitude 0 should quickly find your actual ime 1 13 57 AM L 11 03 2031 latitude longitude To change your present position first move the black boxtothe LATITUDE box if it isn t already there Next press the key next to the CHANGE LAT label The screen shownat right appears Next simply enter your present latitude using the numbered keys Notice that the position entered is in degrees minutes and hundredths of a minute Not seconds If you make a mistake press the left or right arrow keys to move to the number in the latitude that needs changing Press the key nextto the Latitude N S label to change the latitude from north to south if necessary After the latitude has been entered press the key next to the Accept Lat label The black box automatically moves to the longitude field after you enter the latitude Now enter the longitude using the numbered keys Be certain to enter a zero 0 as the first number in the longitude if it s less than 100
76. nstrument Box Off Ad just Backlight Level Ad just Speaker Volume MENU PAGE 2 Construct Digital Instrument Box ADJUST BACK LIGHT LEVEL The LMS 350A has internal lights for the display and keyboard To adjust the intensity of the lighting press the MENU key then press the key adjacent the More label Now press the key next to the Adjust Backlight Level label The screen shown below appears Now press the left arrow key to decrease the light level Press the right arrow key to increase it The percentage of back light in use changes as the arrow keys are pressed The bar chart also gives a graphical indication of the level After you ve made the adjustment press the CLR key to erase the menu BACK LIGHT ON OFF To turn the back lighting on first press the MENU key then press the key nexttothe More ADJUST SPEAKER VOLUME The volume of the speaker s amplifier is adjustable To change the volume press the MENU key then press the key adjacent to the More label Now press the key next to the Adjust Speaker Volume label A Screen appears with the speaker volume adjust menu which is similar to the light adjust menu shown above A musical tune sounds to indicate the current speaker volume Now press the left arrow key to decrease the volume level Press the right arrow key to increase it The percentage of volume in use changes as the arrow keys are pressed The bar chart also gives a graphical indication o
77. nt position Do not navigate with this unit until you have found the reason the unit has lost the satellites Each of the following screens is available by pressing a key at the bottom of the unit except for the satellite information screen A detailed descrip tion of each screen follows SATELLITE INFORMATION SCREEN The satellite information screen shows technical data about each satellite in view To see this display press the MENU key then press the key next to the Satellite Information label A screen similar to the one at the top of the next page appears 58 The LMS 350A has afive chan nel GPS receiver Dataoneach channel is shown at the top of the display The channels are VISIBLE SATS numbered one through five on the left side of the screen Ev ery satellite in the constellation has a number assigned to it 36 09 044 calledthe PRN The PRNisthe 22220415 first number in the channel s row TRK stands for track If the LMS 350A is tracking the satellite then a T is placed in this column If the LMS 350A is searching for the satellite then a S appears ELV is the elevation height of the satellite above the horizon from your position AZM is the azimuth or direction of the satellite from your position For example if the azimuth of a satellite is 180 degrees then it is due south SNR is the signal to noise ratio This tells you how strong the satellite s signal is The higher the SNR number the bet
78. nt position shows at the top of the screen in latitude longitude coordinates This is shown in degrees minutes and thousandths of a minute For example on this page the present position is 31 degrees 8 655 minutes north latitude and 82 degrees 50 445 minutes west longitude Please note that you must recall a waypoint to use the Bearing Distance To Go and Time To Go displays STEERING SCREEN The steering screen shows a pictorial view of your boat and course travelled This is called a Course Deviation Indicator or CDI It also shows Distance To Go DTG Bearing to Waypoint BRG Route Name RTE Name Cross Track Error XTE Time To Go to Waypoint TTG and Waypoint Name WPT Name Press the MENU key then press the key next to the Steer Screen to view this display Your present position is shown by the arrow The arrow shows the direction the boat is heading relative to the waypoint In theory if you steer the boat with the arrow always pointing towards the waypoint then you will arrive at the waypoint The solid line extending from the arrow is your track or path you ve taken To travel directly to a waypoint try to keep the arrow on the center line The waypoint is depicted by a box at the top of the CDI display As you approach the waypoint the arrow and the box will move closer together If you travel past the waypoint the waypoint s box will move to the bottom of the display The numbers on the top left
79. of the transducer must be placed in a location that has a smooth flow of water at all boat speeds Read your transducer owner s manual for the best mounting position 43 WINDOWS GROUP SUMMARY All of the window groups used by the LMS 350A are shown on the following pages To view these groups simply press the WINDOWS key then re peated press the down arrow key This will cycle the unit through all groups Remember the optional LGC 1 GPS module must be connected to the unit for the navigation features to work 10 00 0 25 0 04 COG MAG eean amp 2705732 GROUP F GROUP G 36 08 905 95 967 12 Do 08222 777780 SHALLOW DEEP ALARM ALARM WI OFF Orr GROUP 45
80. on in latitude longitude 2 Elevation above sea level altitude 3 Today s date and time The unit usually only takes a few minutes or less to find the satellites once it s been initialized by the user After the power cable and GPS antenna module are installed press the ON key then press the GPS key Next press the MENU key Now press the key next to the Change GPS Settings label Finally press the key next to the SET LAT LON ALT TIME DATE label The screen shown below appears next Initial Settings This is the GPS setup screen Latitude LEM UU UU The settings now in use are Longitude E 00 000 shown atthe top of the display Altitude 0 A black box surrounds the lati ime 1 13 57 tude box If you re using the te unit for the first time these settings are probably wrong for your position and time To change any of the numbers on this display simply move the black box to the desired num ber using the arrow keys As you move the box the label at the bottom of the screen also changes For example to change the time press the down arrow until the black box is on the time The label at the bottom of the screen now shows Change Time Pressthe key nextto this label Thislets you change the time using the number keys at the top of the unit See the following pages on setting the different items on this screen 55 Note If you don t use the cold start feature then you will have to cha
81. orexample enter 073000 y i for 7 30 Press the key next to ime 8 50 08 the Time AM PM label to Local Date 11 03 2031 change the time from AM to PMPress the key next to the Accept Time label when yourre finished CHANGE DATE To enter today s date press the arrow keys to move the black box to the Local Date field Now press the key next to the Change Date label Use the number keys to enter the date Press the key next to the Accept Date label when you re finished The numbers at the top of the screen should be correct If they aren t press the key next to the label that you need to change If everything is correct press the key next to the Exit label The unit will switch to the position screen and start searching for the satellites currently in view It should find the satellites and show a position in a few minutes COLD START When the LMS 350A is turned on for the first time out of the box it automatically sends a cold start message to the GPS receiver You also can send a cold start message to the receiver 57 If the unit can t lock on to the satellites using the data you ve given it or if it has trouble finding the satellites perhaps it is using the wrong data This can happen if you ve entered the wrong data by accident For example given it east longitude instead of west Or if you ve moved along distance with the unit turned off To send a cold start message to the receiver p
82. peed Over Ground SOG 9 5 5 0 4 6 4 label The letters SOG also TE n flash The black box and flash ing letters identifies the Bear ing box as ready for change To change the Bearing display press the up or down arrow keys to select the data that you want to show inside the box NORMAL DISPLAY DISPLAY READY FOR CHANGE 61 inthe example we chanced the Speed Over 36 08 85 1 3 95 50 649 display to Cross Track Error by pressing the up arrow key eight times To change another digital dis play press the left or right ar row key The label in the next digital display box changes as you press the arrow key Again press the up or down arrow key to change the display The digital displays available for use are Bearing Speed Over Ground Distance To Go DEST WPT oit Destination Waypoint POSITION i Present Position ALTITUDE Present Altitude RTE Route Name WP I NAME cts tonne tn Waypoint Time Go PA cp Cross Track Error TIME DATE Local Time and Date COG TE Course Over Ground jc Velocity Made Good anter Water Depth When you have the display arranged as desired press the CLR key This locks the display Every time you switch to this display it will appear as you designed it unless you preset the unit
83. position as a waypoint with only one key press This Quick feature lets you easily save the position of a wreck or other locations To save your present position as waypoint simply press the WAYPT QUICKSAVE key The LMS 350A takes your present position and assigns the first available waypoint number to it Saving Present Position View and Save Method The Quick Save feature doesn t let you select the waypoint number You have to use the next available number when using that method The View and Save method lets you pick the waypoint number that your present position is stored in Note You can store a position under a waypoint number that already has a position assigned to it using this method To save your present position press WAYPT key then press the key next to the WPT Save label A screen similar to the one below appears The first waypoint number in the list appears at the top of the Save Wpt page This is the number that your present position will be stored under Your position at the time you pressed the WAYPT key is shown in the 362 09 0212 Current Position box in the y 95250540 middle of the screen If you wish to save the location in the Current Position box under this waypoint number simply press the key next to the Use Cur rent Position label The position shown in the Current Position box also will show in the waypoint location at the top of the screen To save the waypoint withou
84. press the key next to the YES arrow If not press the key next to the NO arrow Press the key next to the YES arrow to erase all information from the displayed waypoint number Recall a Waypoint You must recall a waypoint in order to navigate to that position with the LMS 350A To recall a waypoint first press the WAYPT key then press the key next to the WPT Recall label The screen shown at the top of the 73 next page appears Recall Wpt Now press the key next to the Increase WPT or Decrease WPT label until the desired waypoint number appears on the screen Or simply enter the waypoint number using the numbered keys When it does simply press the key next to the Goto Waypoint label The LMS 350A begins showing navigation data to the waypoint Bear ing 106 mas ROUTES A route gives you the ability to navigate to several waypoints without having to re program the unit after arriving at each one A route consists of two or more waypoints When you travel on a route the LMS 350A first shows navigation information to the first waypoint in the route When you reach the first waypoint signalled by the Arrival Alarm the LMS 350A automatically sequences to the next waypoint Navigation information is shown to this waypoint and the process repeats When you reach the last waypoint in a route the arrival alarm sounds until you turn it off There are four steps required to crea
85. r is sophisticated but it can be fooled It cannot distinguish between fish and other suspended objects such as trotlines turtles submerged floats air bubbles etc Individual tree limbs extending DISPLAY CONTRAST Theunit s display contrast 5 adjustable to suit different lighting conditions To adjust it first press the menu key The first menu page appears Now press the key next to the Ad just Display Contrast label A screen similar to the one below appears Now press the key adjacent to the left arrow to decrease the contrast Press the key adjacent to the right arrow to increase it The per centage of contrast in use changes as the arrow keys are a nes 21 ALARMS The LMS 350A has three different types of sonar alarms The first is the Fish Alarm It sounds when the Fish I D feature determines an echo or group of echoes is a fish Another alarm is the Zone Alarm which consists of abar Any echo that appears inside this bar triggers the alarm The last alarm is called the Depth Alarm Only the bottom signal will trigger this alarm This is useful as an anchor watch a shallow water alert or for navigation To adjust an alarm first press the MENU key Now press the key next to the Adjust Alarms et Depth or GPS Alarns label The screen shown below appears Press the key next to the Set Depth or GPS Alarms to adjust the shallow or deep digital alarms Press the key next to the Set Zone
86. ress the MENU key Now press the key next to the ChangeGPS Settings label Finally press the key next to the GPS COLD Start label The unit will begin a cold start technique to find the available satellites It should lock on to them in 15 minutes or less Remember when it does your local time and possibly date display will probably be wrong Use the method shown previously to set the time and date to their proper local settings Once this is done an internal clock will keep the correct time even when the unit is turned off The GPS system updates this clock when the unit is locked on to the satellites POSITION NAVIGATION DISPLAYS The LMS 350A has position screen plotter steering indicator and a satellite information screen These displays were designed to show the most important data However you can customize all of them to some extent through the Change Display feature on the first GPS menu Screen There are other screens that can be customized by using the Windows feature See the Windows section for more detail To customize these screens see the Customize section IMPORTANT If the data shown in digital numbers on any screen on this unit is flashing then it means that data is invalid Do not rely on that data if it is flashing For example if the position display is flashing then the unit has lost the satellites and hasn t re aquired them The position that is flashing is your last known position not your prese
87. ront of this manual for wiring connection information The LMS 350A also has the capability to receive differential data from a beacon receiver This gives the unit much better accuracy than normal However before purchasing and installing a beacon receiver make certain there are transmitters in the area you wish to use Presently the LMS 350A can use the Magnavox MX 50R or StarLink MRB 2A Please note that the LMS 350A doesn t send NMEA 0183 data when the Magnavox MX 50R beacon receiver is activated NMEA SETUP Once you connect the wiring properly the LMS 350A must be told which NMEA data formatto use Con sult the owner s manual of the other equipment to see which format it needs Then set the Next press the key next to the NMEA Off MAGNAVOX DGPS Change GPS Settings label Now press the key next to the Setup Beacon Receiver Select NMEA DGPS label The screen shown at right ap pears The data format currently in use shows atthe top ofthe screen To change it press the key next to the desired data output Now press the CLEAR key The Accura will return to the last used GPS screen and send NMEA data out the white wire on the power cable 80 DGPS Differential GPS BEACON RECEIVER SETUP You ll have to tell the LMS 350A which beacon receiver s data to expect and set up the parameters for that data To do this first press the MENU key then press the key next to the Change GPS Settings label Now press the
88. s menu or wait approximately ten seconds and the menus will automatically clear Remember to show speed temperature or distance log you must have an optional speed temp sensor installed and connected to the LMS 350A 28 label Finally press the key next to the Turn Backlight On Off label This moves the black box from OFF to the ON position To turn the backlights off repeat the same steps MENU PAGE 3 DISPLAY ZOOM BAR When the unit is in the zoom mode the zoom bar doesn t normally show on the screen The zoom bar shows the sec Display Zoom Bar Display Zone Alarm Ba Turn Digital Sonar Of Turn All Sonar Off Turn Chart Cursor On tion of water on the right side of the screen that the zoom feature displays AUTOMATIC 46 6 Sha SW on the left side To turn the zoom bar on continuously first press the MENU key then pressthe key nextto the More label two times The screen shown above appears Now press the key next to the Dis play Zoom Bar label A screen similar to the one at left ap pears Note that turning the zoom bar on also turns the zoom feature on To turn the zoom bar off repeat the above steps until the third menu page appears then press the key adjacent to the Remove Zoom Bar label This removes the zoom bar but leaves the unit in the zoom mode See the zoom section for more information on this feature
89. s you the true depth The rest of the signal tells you whether you are over rocks mud etc if the cone passes over a fish in shallow water the signal displayed on the LMS 350A may not arch at all This is due to the narrow cone diameter and the resolution limitations of the display FISH ARCHES Fish arches are created when the cone of sound passes over a fish The distance to a fish when the cone first strikes it is shown as A on the next page When the center of the cone strikes the fish the distance is shorter as shown As the cone leaves the fish the distance increases again as shown Very small fish probably will not arch at all Medium sized fish will show a BOAT S DIRECTION OF TRAVEL 39 partial arch or shape similar to an arch if they re in deep water Large fish will arch but turn the sensitivity up in deeper water to see the arch Because of water conditions such as heavy surface clutter thermoclines etc the sensitivity sometimes cannot be increased enough to get fish arches One of the best ways to get fish arches is to expand or zoom a segment of the water For example using the 2X or 4X zoom feature The smaller the segment the better the screen resolution will be The zoom feature expands the echoes making it easier to see detail For the best results turn the sensitivity up as high as possible without getting too much noise on the screen In medi
90. same steps TURN ALL SONAR OFF To turn the LMS 350A into a GPS only unit press the MENU key then press the key next to the More label until the third menu page appears Now press the key next to the Turn All Sonar Off label This stops both the chart and the digital sonar To turn both of the sonars on again repeat the above steps then press the key next to the Turn All Sonar On label CHART CURSOR The LMS 350A has a chart cursor that lets you pinpoint a target s depth The cursor is simply a movable horizontal line that extends across the display from right to left A depth box at the far right end of the line shows the line s depth Inthe example at the top of the next page the chart cursor depth is 16 4 feet To turn the chart cursor on press the MENU key until the third menu screen appears as shown at the top of this page Now press the key next to the Turn Chart Cursor On label A screen similiar to the one at the top of the next page appears To move the chart cursor simply 30 press the up or down arrow keys This lets you move the cursor to verify atarget s depth To turn the chart cursor off press the MENU key until the third menu screen appears Now press the key next to the Turn Chart Cursor Off label The LMS 350A returns to the sonar screen with the cursor turned off MENU PAGE 4 FASTRAK This feature converts ech oes to short horizontal lines the display s far right side T
91. t naming it simply press the key next to the Save WPT label Current Posit ion To save the location under a different waypoint number press the key next to the Increase WPT label to increase the waypoint number i e from waypoint number 1 to 2 Press the key next to the Decrease WPT label to decrease the waypoint number Or simply enter the desired waypoint number using the numbered keys Once you ve decided the waypoint number to save the location under press the key next to the Use Current Position label Then press the key next to the Save WPT label This will store the location under the waypoint number you selected and return to 71 the last used position plotter or steering screen Enter New Waypoint To save alocation other than your present position first press the WAYPT key then press the key next to the WPT Save label Using the up and down arrow keys move the black box down to the latitude longitude position Now press the down arrow key to the latitude posi tion Press the key next to the Change Latitude label The Decrease WPTH screen shown below appears Now enter the location you wish to save using the numbered z keys Use the arrow as cn a backspace if you make a mistake In other words press ing the left arrow key moves the black box over the last num ber entered Notice that the position entered is in degrees minut
92. te and follow a route First you must create and name the route Next select the waypoints used in the route Then determine the starting waypoint Next tell the unit to follow the route Finally the unit will ask you if you wish to run the route forward or backward After these steps are completed the LMS 350A will start showing navigation data to the first waypoint on the route CREATING A ROUTE To create a route first press the MENU key then press the key next to the More label Finally press the key next to the Route Plan ning label Now press the key next to the Save Edit Route label The screen shown at right appears This menu lets you select the route number name the route andchoose the waypoints used in the route Select the route that you wish to create by tt tt tt 74 pressing the key next to the Increase or Decrease RTE labels When the desired number appears you can create or edit it Name a Route To assign a name to a route press the key next to the Increase RTE or Decrease RTE label to move through the list of routes When the desired route number appears in the window atthe top of the screen press the down arrow key until the black box moves to the Name position Now press the key next to the Change label The screen shown below appears next Use the keys on both sides of the screen to enter the way point name For exampl
93. ter The satellites that are visible in the sky from your position are shown in the right side of the screen under the VISIBLE SATS heading Inthe upper right corner of the screen are the DOPS displays These show you the Dilution Of Precision DOP for the horizontal HDOP geomet ric GDOP position PDOP time TDOP and vertical VDOP The GDOP is the combination value of HDOP VDOP and TDOP The smaller the GDOP s number is the better The GPS receiver selects satellites based on GDOP therefore it always tries to use satellites that have good DOP values These depend on the azimuth and elevation of the satellite and any ground based obstructions Remember the smaller the number the better on all of the DOPs At the bottom of the screen are the Present Position POSITION Speed Over Ground SOG Course Over Ground COG Distance To Go to waypoint DTG Bearing to waypoint BRG and local time and date displays These displays are customizable POSITION SCREEN The position screen automatically appears after the LMS 350A is initial ized or you can view this screen at any time by pressing the GPS key The position display shows your present position in large numbers at the top of the screen and Speed Over Ground SOG Course Over Ground 59 COG Distance Go DTG 2 36 08 855 int d ti d date displays atthe botem ot 95 50 445 the screen Your prese
94. the above steps 37 that this doesn t turn the zone alarm off See the Alarms section for more information on the zone alarm TRANSDUCER CONE ANGLES The sound waves from the transducer spread out into the water in a cone shaped beam This looks much like the beam from a flashlight The angle between the outside edges of the cone is the cone angle Lowrance offers a choice of transducers with either an 8 or 20 degree cone angle The transducer supplied with the LMS 350A has a 20 degree cone angle Typically wide cone angle transducers 20 degrees are ideal for operating in shallow to medium water depths The 20 degree cone angle allows you to see more of the underwater world In 15 feet of water the 20 degree cone covers an area about six feet across The 8 degree transducer covers only about a two foot circle The 20 degree transducer is almost always the best to use in fresh water the 8 degree mostly in salt water In a deep water environment 300 feet fresh water 100 feet salt water the narrow cone angle is more desirable Since the sound energy is concentrated in a smaller area it can penetrate to much deeper depths 8 degree TRANSDUCER CONE ANGLES 38 Both 8 degree and 20 degree transducers give accurate bottom readings even though the bottom signal is much wider on the 20 degree model This is because you are seeing more of the bottom Remember the shallow edge of the signal show
95. the screen in place of the actual fish echoes There four fish symbol sizes tiny small medium and large These are used to designate the relative size between targets In other words it displays a small fish symbol when it thinks a target is a small fish a medium fish symbol on a larger target etc 20 outwards from a group of limbs is the hardest object for the Fish I D feature to distinguish from fish You may see Fish 1 0 symbols on the screen when actually there are no fish Practice with the unit in both the Fish 1 0 mode and without to become more familiar with the Fish 1 0 feature To turn the Fish feature on press the menu key then press the key adjacent to the Turn Fish ID On label Echoes will continue to scroll across the screen however the surface clutter atthe top will no longer be displayed Any targets the micro computer determines are fish will be displayed as fish symbols To turn the Fish I D feature off again first press the menu key Next press the key adjacentto the Turn Fish D Off label The menu immediately disappears and the sonar screen returns Remember the Fish I D feature can t be used when the LMS 350A is in the manual mode If you turn the Fish D feature on when the LMS 350A is in manual the micro computer will turn the automatic feature on If you turn automatic off when the Fish I D feature is on the Fish I D feature will be turned off also The micro compute
96. the LMS 350 s MAN OVERBOARD key The screen shown below ap pears Your position at the time you pressed the Man Overboard key is shown in the top left corner of the display Beneath the position is the time that you pressed the Man Overboard key At the bottom of the screen are the navigation data displays showing the Distance DTG Bearing BRG Course COG Speed Over Ground SOG and Time To Go TTG back to the postion at the top of the display Using these displays along with the plotter in the Nav Summary lower right corner of the screen gives you the information you need to steer back to the man overboard position Position N 36 09 064 95 50 488 12 09 17 H 83 LMS 350A doesn t save the Man Overboard position in the waypoint table However it does save the position on the Man Overboard screen The LMS 350A always shows navigation data to the position shown onthe Man Overboard screen whenever the Man Overboard key is pressed To stop the unit from navigating to the Man Overboard position press the key next to the DISABLE MOB label This resets the Man Overboard navigtion For example suppose you are viewing the Position screen and you press the Man Overboard key then press the GPS key The LMS 350A first displays then stores your present position on the Man Over board screen then switches back to the Position screen If you press the Man Overboard key again it will still s
97. the key next to the Adjust Keel Offset label The screen shown below appears The e depth 2 inthe e TG Tc upper left corner of the screen The keel offset in use shows in 4 g 9 the upper right corner it SHALLOW DEEP simply enter the desired dept P using the numbered keys Re member to add tenths For ex The maximum KEEL offset ample to set the keel offset to is 99 Feet three feet first press the 3 then Press CLEAR to press the 0 key Finally press 2 the ENT key finished To enter a negative keel offset use the same steps as above but press the key next to the Keel label To turn the keel offset feature off enter 0 0 or press the CLR key When you have the keel offset at the desired setting press the key next to the Exit label The unit returns to the sonar screen using the keel offset you entered CALIBRATE SPEED The speed display on the sonar screens comes from the optional speed sensor not the GPS receiver To calibrate this sensor to your boat first press the MENU key six times while a sonar screen is showing Now press the key next to the Calibrate Speed label The screen shown at the top of the next page appears 36 SPEED MPH CALIBRATE SPEED Your current boat speed and distance log are shown in the upper left coner of the screen The calibration in percent is shown in the upper right cor LOG MILES ner Now enter
98. the same time or by themselves To set depth alarms first press the MENU key then press the key next to the Adjust Alarms label The screen on the previous page appears Now press the key next to the Set Depth Alarms label The screen at the top of this page appears To adjust the shallow alarm press the key next to the Shallow label To adjust the deep alarm press the key next to the Deep label Both alarms adjust identically We ll use the shallow alarm as an example Pressing the key next to the Shallow label moves the black box from the OFF postion to the Adjust A new screen appears as shown at right Use the numbered key pad on the right side of the unit to enter the shallow alarm set Use esl ting We used 10 feet in this a example After you ve entered _ the desired alarm depth press the ENT key This enters the alarm depth into memory Now press the key next to the Exit label The shallow alarm is now set If the bottom goes shallower than 10 feet the alarm will sound and a warning message appears on the screen at the same time A label also appears letting you mute the alarm if desired 23 ZONE ALARM The zone alarm consists of a bar that appears on the right side of the screen Any echo that appears on the screen between the top and bottom of the zone alarm s bar will trip the zone alarm Note The zone alarm isn t available in the Windows mode
99. tination ICON ON OFF Pressing this key turns on the icons that you placed on the screen using the EVENT MARKER key For more information on this feature see the Event Marker section This also turns on all of the waypoint icons also ALARMS Press this key for the alarms menu For more information on the alarms see the ALARMS section CHANGE PLOTTER DISPLAY When the LMS 350A is first turned on or after a preset the plotter screen has a column of digital displays on the left side of the screen These displays can be changed or erased completely This gives you a full screen plotter To change the plotter display press the MENU key while the plotter is displayed Now press the key next to the Change Plotter Display label The menu shown below appears To change to a full screen plotter display press the key next to the Full Screen Plotter key A plotter similiar to the one shown at the top of the next page Change Info Boxes appears Full Screen Plotter Tochange digital display boxes press the key next to the Change Info Boxes A screen similar to the one on the next page appears 65 unit returns to the plotter screen with a black box around the position display at the top of the screen as shown below The word POSITION also flashes identifying it as ready for change Press the left or right arrow keys to change the data displayed in that box For example to change the Posi tion disp
100. um to deep water this method should work to display fish arches If you see fish signals when the unit is in the manual mode but don t get fish symbols when the Fish I D feature is on try increasing the sensitivity areas where fish are likely to be Even if it s the first time on the water IMPORTANT SERVICE INFORMATION If your unit is not working or if you need technical help please use the following troubleshooting section before contacting the factory customer service department It may save you the trouble of returning your unit Unit 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 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 Re routing the power and trans ducer cables away from other electrical wiring on the boat may help Route 40 the sonar unit s power cable directly to the battery instead of through a fuse block or ignition switch 2 Inspect the transducer cable
101. ve the black box to the desired waypoint number Then press the key next to the Start Route label it i it i To follow route backwards press the key next to the Reverse label For example suppose you have three waypoints in a route and they re numbered 3 6 and 2 If you travel forward through the route the unit will show navigation data to waypoint number 3 first then 6 and finally 2 If you travel backward through the route the unit will start with waypoint number 2 first then 6 and end with waypoint number 3 No matter if you travel forward or reverse through the route when you reach the last 76 waypoint in the route the arrival alarm sounds until you turn it off IMPORTANT Turning the arrival alarm off prevents the LMS 350A from sequencing to the next waypoint in the route This in effect turns the route off However the unit will still show navigation data to the current waypoint in the route at the time the arrival alarm was turned off CANCEL NAVIGATION To stop the LMS 350A from navigating to waypoint or navigating to a waypoint in a route press the MENU key twice Now press the key next to the CANCEL NAVIGATION label This stops all navigation NOTE Canceling navigation does not erase the route or any waypoints from memory It merely stops the LMS 350A from navigating MODIFYING A ROUTE Any partofaroute can be changed at any time For example suppose you have a rout
102. y feature is enabled The LMS 350A lets you make changes to the sensitivity and Grayline on one side of the screen without affecting the other To adjust the sensitivity for example first press the SENS key The screen shown at right ap pears To adjust the sensitiv ity for the left or 50 kHz side of the screen press the key adjacent to the 192kHz 50kHz label Now press the left arrow key to decrease the sensitivity or the right arrow to Dual Frequency Split Screen Mode increase it When you re fin Left chart is operating at 50 kHz right chart is ished press the CLR key to 192 kHz erase the menus Note If no frequency identification shows at the bottom of the screen then the 192 kHz frequency is in use The letters 50 kHz always show at the bottom of the screen when the 50 kHz frequency is in use Remember to use the 50 kHz frequency you must have a 50 kHz transducer attached to the unit If you wish to use both 192 and 50 kHz frequencies at the same time you must have both transducers plus a MY 2 adapter cable attached to the unit See the transducer connec tions section at the front of this manual for more information 26 pressed The bar chart also gives a graphical indication of the contrast level You can see the change on the screen as Turn Backlight youpress the keys After you ve made the adjustment press the CLR key to erase the menu Digital I

Lowrance electronic LMS-350A User's Manual

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