LMS-350A INSTALLATION AND OPERATION INSTRUCTIONS
IMPORTANT! YOU MUST HAVE THE OPTIONAL LGC-1 GPS MODULE ATTACHED TO THE LMS-350A TO USE THE POSITION AND NAVIGATION FEATURES 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.
SONAR TABLE OF CONTENTS INTRODUCTION ............................................................................................................................ 1 MOUNTING .................................................................................................................................... 1 POWER CONNECTIONS ............................................................................................................... 3 TRANSDUCER CONNECTIONS .................................................
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.
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.
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.
The white wire is for a NMEA interface. The 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 intput to the white wire on the LMS-350's power cable.
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 make a good location. Attaching the pole mounting adapter lets you install the module on a one inch mast.
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.
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.
LOWRANCE LMS-350A 1 2 3 SENS 4 5 6 RANGE 7 8 9 ZOOM CLR AUTO 0 ENT WAYPT WAYPT MENU EVENT MAN MARKER OVERBOARD OFF SONAR GPS ON 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.
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.
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 functions 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.
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 backward. For example, pressing the down arrow key once shows the group “B” screen. To return to the full sonar screen, press the “SONAR” key.
press the CLR key. VIEWING WINDOWS OPTIONS To see all of the available window options, press the WINDOWS key, then press the MENU key. Now press the key adjacent to the “MAIN MENU” label. Finally, press the key next to the “VIEW ALL WINDOWS” label. The screen at right appears. The first window appears in the upper right corner of the screen. A description of the screen shows in the box at the bottom of the screen. Now press the key adjacent to the “NEXT” label.
next to the “GROUP A” label was pressed. The screen shown at the top of the next page appears. The depth window appears in 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 WINDOW” label. When the desired window is on the screen, press the key next to the “USE WINDOW” label.
SONAR OPERATION AUTOMATIC When the LMS-350A is first turned on, the Automatic feature is enabled. This is indicated by the word “AUTO” at the top of the screen. The Automatic feature adjusts the sensitivity and range so the bottom signal is displayed in the lower half of the screen at all times. To turn Automatic off, first press the AUTO key. A menu appears at the bottom of the screen above the left and right arrows. Press the left arrow key to switch to the manual mode.
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 information, 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.
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.
To 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 "CHANGE LOWER LIMIT" labels. On the screen shown at right, the key next to the "CHANGE UPPER LIMIT" was pressed. Now enter the desired depth, using the numbered keys. In this example, we entered 35 feet. Now press the ENT key. The LMS-350A erases the range menus from the screen, and uses the new range you entered as shown below.
next to the “RESET ALL GROUPS” label. Turn the zoom feature on (or off) by pressing the key adjacent to the “OFF/ON” label. Pressing the key adjacent to the “2X/4X” label enlarges echoes from two times to four times their normal size. To switch between the split screen zoom and full screen 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.
the bottom when it’s in 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.
GRAYLINE® OFF GRAYLINE® ON GRAYLINE is adjustable. Since GRAYLINE shows the difference between 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 appears.
outwards from a group of limbs is the hardest object for the Fish I.D. feature to distinguish from fish. You may see Fish I.D. symbols on the screen when actually, there are no fish. Practice with the unit in both the Fish I.D. mode and without to become more familiar with the Fish I.D. feature. To turn the Fish I.D. feature on, press the menu key, then press the key adjacent to the “Turn Fish-ID On” label.
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 a bar. 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.
DEPTH ALARMS The depth alarms sound a tone when the bottom signal goes shallower than the shallow alarm’s setting or deeper than the deep alarm’s setting. For example, if you set the shallow alarm to ten feet, the alarm will sound a tone if the bottom signal 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.
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. To set the zone alarm, press the MENU key. Now press the key next to the “Adjust Alarms” label. Finally, press the key next to the "Set Zone Alarm" label. A screen similar to the one shown below appears.
SONAR FREQUENCY The LMS-350A operates from 50 or 192 kHz, either independently or simultaneously. The sonar unit comes with a 192 kHz transducer, other optional transducers are available. See the transducer diagram on page 3 for single or dual transducer connections. The chart can operate from a different frequency than the digital sonar. 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.
CHART DUAL FREQUENCY OPERATION 50 kHz Sensitivity and Grayline® adjust differently when the Dual Frequency 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 appears. To adjust the sensitivity for the left, or 50 kHz side of the screen, press the key adjacent to the "192kHz 50kHz" label.
pressed. The bar chart also gives a graphical indication of the contrast level. You can see the change on the screen as you press the keys. After you’ve made the adjustment, press the CLR key to erase the menu. MENU - PAGE 2 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 to the "More" label. Now press the key next to the “Adjust Backlight Level” label.
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.
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 section of water on the right side of the screen that the zoom feature displays on the left side.
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 “Remove 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.
press the up or down arrow keys. This lets you move the cursor to verify a target'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 all echoes to short horizontal lines on the display’s far right side. The graph continues to operate normally.
SELECT UNITS OF MEASURE The LMS-350A can display the water depth in feet, fathoms, or meters, surface water temperature 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.
Lines On" label. A screen similar to the one shown at the bottom of the previous page appears. To turn the depth lines off, repeat the 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 The markings extending downward from the zero line on the chart are called “surface clutter.
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 display possible under most conditions. The ASP feature is an effective tool in combating noise. In sonar terms, noise is any undesired signal.
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.
IMPORTANT! 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 the key next to the "Adjust Keel Offset" label. The screen shown below appears. The digital depth displays in the upper left corner of the screen.
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 corner. Now enter the percent change that is needed to make the LMS-350's speed display match your actual speed. For example, if the LMS-350's speed display is five percent slower than your actual speed, then use a positive five percent. If the LMS350's speed display is five percent faster than your actual speed, then use a negative five percent speed calibration.
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.
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 shows 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.
partial arch, or a 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 sonar unit’s power cable directly to the battery instead of through a fuse block or ignition switch 2. Inspect the transducer cable for breaks, cuts, or pinched wires. 3. Check both the transducer and power connectors. Make certain both are securely plugged in to the unit. Weak bottom echo, digital readings erratic, or no fish signals: 1. Make certain transducer is pointing straight down. Clean the face of the transducer.
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.
is causing the interference. VHF radio antenna cables radiate noise when transmitting, so be certain to keep the sonar’s wires away from it. You may need to route the sonar unit’s power cable directly to the battery to isolate it from other wiring on the boat. If no noise displays on the sonar unit from electrical equipment, then make certain everything except the sonar unit is turned off, then start the engine. Increase the RPM with the gearshift in neutral.
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 repeated 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.
GROUP "H" GROUP "I" GROUP "J" GROUP "K" GROUP "L" GROUP "M" GROUP "N" GROUP "O" 45
GROUP "P" GROUP "Q" GROUP "R" GROUP "S" GROUP "T" GROUP "U" GROUP "V" 46
WINDOWS SUMMARY All of the 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.
WINDOW 8 WINDOW #9 WINDOW #10 WINDOW #11 WINDOW #12 WINDOW #13 WINDOW #14 WINDOW #15 48
WINDOW #16 WINDOW #17 WINDOW #18 WINDOW #19 WINDOW #20 WINDOW #21 49
LMS-350A GPS OPERATION IMPORTANT! YOU MUST HAVE THE OPTIONAL LGC-1 GPS MODULE ATTACHED TO THE LMS-350A TO USE THE POSITION AND NAVIGATION 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.
GPS TABLE OF CONTENTS GPS - HOW IT WORKS .................................................................................................................. 53 ACCURACY .................................................................................................................................... 54 THE LOWRANCE GPS MODULE .................................................................................................. 54 GETTING STARTED - INITIALIZATION .................................................
GPS - HOW IT 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 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.
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 military 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.
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 navigation displays, including the position display will be correct.
Note: If you don’t use the “cold start” feature, then you will have to change 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.
below sea level. You would need to enter the numbers “35”, then press the key next to the "Altitude + -" label to change it to -35 feet. Press the key next to the “Accept Alt” label when 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.
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 a long distance with the unit turned off. To send a cold start message to the receiver, press the MENU key. Now press the key next to the “ChangeGPS Settings” label.
The LMS-350A has a five channel GPS receiver. Data on each channel is shown at the top of the display. The channels are numbered one through five on the left side of the screen. Every satellite in the constellation has a number assigned to it, called the PRN. The PRN is the 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.
(COG), Distance To Go (DTG) to waypoint, Bearing to waypoint, Time To Go (TTG) to waypoint, and local time and date displays at the bottom of the screen. Your present 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.
a black box surrounding them, then the distance markers is showing the distance PAST the waypoint. In other words, if the numbers are surrounded 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.
In this example, we changed the Speed Over Ground (SOG) display to XTE (Cross Track Error) by pressing the up arrow key eight times. To change another digital display, press the left or right arrow 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: BRG .......................................... Bearing SOG .......................................... Speed Over Ground DTG...
The flashing cross is your present position. The solid line 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.
cursor position, distance, and bearing displays at the top of the screen. PLOTTING WITH A WAYPOINT 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.
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 in” to see small variations in your course or “zoom out” to see your starting position, present position, track, course, and destination.
The 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 Position display to Distance Go Go (DTG), press the right arrow key two times. To change another digital box, simply press the up or down arrow keys until the desired box's label is flashing.
To 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.
SELECT UNITS OF MEASURE The LMS-350A can display distance 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 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 key next to the “SELECT UNITS OF MEASURE” label. The screen shown at left appears.
EVENT MARKER The LMS-350A can place event markers or “icons” on the plotter to mark fishing spots, shallow water, or other special locations. There are five different icons to choose from and there are 100 of each icon for a total of 500. You can place each 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.
ing the arrow keys. When it’s at the desired 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 can’t erase them one at a time. You have to erase the whole group of icons. For example, if you’ve place 20 fish symbol icons, erasing one of them erases all 20.
(Quick Save Feature) The LMS-350A lets you save your present position as a waypoint with only one key press. This “Quick Save” 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.
the last used position, plotter, or steering screen. Enter New Waypoint To save a location 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 position. Press the key next to the "Change Latitude" label. The screen shown below appears. Now enter the location you wish to save using the numbered keys.
shown above appears. Use the keys on both sides of the screen to enter the waypoint name. For example, to name a waypoint “COVE 1”, press the ALARM key repeatedly until the letter “C” appears in the window. Next, press the right arrow key to move the black box to the next letter position. 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.
next page appears. 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 “Go to Waypoint” label. The LMS-350A begins showing navigation data to the waypoint. ROUTES A route gives you the ability to navigate to several waypoints without having to re-program the unit after arriving at each one.
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 at the 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.
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 entered 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.
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.
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 The LMS-350A has three GPS alarms. One is an arrival alarm that sounds when you come within a preset distance to a waypoint.
The following section describes each GPS alarm and 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.
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.
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 key next to the "Select NMEA/DGPS" label. The screen on the previous page appears. Press the key next to the desired beacon receiver.
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 number, the better), and the signalto-noise ratio (SNR). The higher 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.
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.
The 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 on the 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.
near the bottom of the screen. Contact 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.
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 in the calculations have to be made to accommodate deviations. To make matters more complex, not everyone uses the same data to determine what the deviations are. The size and shape of the ellipsoids that are used to approximate the earth's surface are improved often.
Press the key next to the "Accept Offset" label when you've entered the desired latitude offset. Repeat this procedure to change the longitude. In this example, we have entered 0 degrees,.012 minutes north lattitude and 0 degrees, .068 minutes east longitude as the PCF offset. That is the difference between the present position 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.
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 Accuracy ...................................Maximum accuracy achievable with Standard Positioning Service Position: ....................................25 meters CEP Velocity: .....................................0.
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LITHO IN U.S.A.
