Lowrance LMS-350A - Manuals

3 POWER CONNECTIONSThe LMS-350A works from a twelve-volt battery system. For the bestresults, attach the power cable directly to the battery. You can attach thepower cable to an accessory or power buss, however you may haveproblems with electrical interference. Therefore, it’s safer to go ahead anda...

4 50 kHz TRANSDUCER 192 kHz TRANSDUCER TRANSDUCER ADAPTER CABLE (MY-2) The white wire is for a NMEA interface. The LMS-350A sends data toanother electronic navigation devices through the white wire. It receivesdata from a differential (DGPS) beacon receiver through the green wire.If the white and gr...

11 To use the windows feature,first press the WINDOWS key.A screen similar to the oneshown at left appears. Themenu on the right side of thescreen lets you switch betweenthe “pages” of displays. Theseare lettered “A” through “V”.Group “A” shows first. Pressthe down arrow key to moveforward through t...

14 AUTOMATICWhen the LMS-350A is firstturned on, the Automatic fea-ture is enabled. This is indi-cated by the word “AUTO” atthe top of the screen. The Auto-matic feature adjusts the sensi-tivity and range so the bottomsignal is displayed in the lowerhalf of the screen at all times. Remember, when th...

19 the bottom when it’s in themanual mode. MENU - PAGE 1 CHART SPEEDThe rate echoes scroll acrossthe screen is called the chartspeed. It’s adjustable by firstpressing the menu key, thenpressing the key adjacent tothe “Adjust Chart Speed” label.The chart speed menu appearson the right side of the scr...

25 SONAR FREQUENCY The LMS-350A operates from50 or 192 kHz, either inde-pendently or simultaneously.The sonar unit comes with a192 kHz transducer, other op-tional transducers are avail-able. See the transducer dia-gram on page 3 for single ordual transducer connections.The chart can operate from adi...

26 50 kHz 192kHz CHART DUAL FREQUENCY OPERATION Sensitivity and Grayline ® adjust differently when the Dual Frequency feature is enabled. The LMS-350A lets you make changes to thesensitivity and Grayline onone side of the screen withoutaffecting the other. To adjustthe sensitivity, for example,first...

29 label. Finally, press the keynext to the “Turn Backlight OnOff” label. This moves the blackbox from “OFF” to the “ON”position. To turn the backlightsoff, repeat the same steps.MENU - PAGE 3 DISPLAY ZOOM BARWhen the unit is in the zoommode, the zoom bar doesn’tnormally show on the screen.The zoom ...

33 MENU - PAGE 5 ADJUST CHART SURFACECLARITY The markings extending down-ward from the zero line on thechart are called “surface clut-ter.” These markings are causedby wave action, boat wakes,temperature inversion, andother natural causes. The Surface Clarity Control(SCC) reduces or eliminates surfa...

38 that this doesn't turn the zone alarm off. See the Alarms section for moreinformation on the zone alarm.TRANSDUCER CONE ANGLESThe sound waves from the transducer spread out into the water in a coneshaped beam. This looks much like the beam from a flashlight. The anglebetween the outside edges of ...

39 A B C BOAT'S DIRECTION OF TRAVEL A B C Both 8 degree and 20 degree transducers give accurate bottom readings,even though the bottom signal is much wider on the 20 degree model. Thisis because you are seeing more of the bottom. Remember, the shallowedge of the signal shows you the true depth. The ...

40 partial arch, or a shape similar to an arch if they’re in deep water. Largefish 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 fisharc...

51 All features and specifications subject to change without notice. All screens in this manual are simulated. LMS-350A GPS OPERATION WARNING! USE THIS PRODUCT ONLY AS AN AID TO NAVIGATION. A CAREFULNAVIGATOR NEVER RELIES ON ONLY ONE METHOD TO OBTAINPOSITION INFORMATION. CAUTION The LGC-1 GPS receiv...

52 GPS TABLE OF CONTENTS GPS - HOW IT WORKS .................................................................................................................. 53ACCURACY .....................................................................................................................................

59 The LMS-350A has a five chan-nel GPS receiver. Data on eachchannel is shown at the top ofthe display. The channels arenumbered one through five onthe left side of the screen. Ev-ery satellite in the constellationhas a number assigned to it,called the PRN. The PRN is thefirst number in the channel...

63 The flashing cross is yourpresent position. The solid lineis your track, or path you havejust traveled. The large squareis a compass rose marked withNorth, South, East, and West.The square’s height and widthshows at the bottom of thescreen. This is the distancefrom one side to the other andfrom t...

64 cursor position, distance, andbearing displays at the top ofthe screen. PLOTTING WITH A WAY-POINTUsing the plotter with a recalledwaypoint or route is an easyway to see the effects of windand current on your boat. Italso simplifies navigation. Touse the plotter in this manner,first recall a waypo...

70 ing the arrow keys. When it’s at the desired location, press the EVENTMARKER key, then select an icon. The LMS-350A places the icon at theintersection of the plotter cursor lines. To erase the cursor lines, press the CLEAR key. Erasing the IconsAlthough you can place iconson the plotter individua...

75 pressing the key next to the "Increase" or "Decrease" RTE# labels. Whenthe desired number appears, you can create or edit it. Name a RouteTo 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 thedesi...

77 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 tothe 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...

88 LMS-350A GPS RECEIVER SPECIFICATIONSGPS Module Dimensions .......... 2.5"H x 4.1"W x 7" DChannels ................................... Five Parallel Four continuous for positionAll satellites in view tracked Update rate ............................... One secondAccuracy ..................