User manual LOWRANCE X-3

[. . . ] INSTALLATION AND OPERATION MANUAL COMMAND SUMMARY DIGITALOFF/ON DIGITALWs SIZE AUTORANGING OFF/ON· HIGH-SPEED Scroll ON/OFF CLEAR ENTRY CLEAR SCREEN FREEZE CHART RESTARTCHART DISCRIMINATION AUTO-RANGING W/ZOOM BO1TOMTRACK INCREASE SENSITIVITY DECREASE SENSITIVITY INCREASE CHART SPEED DECREASE CHART SPEED VIEW CHART SPEED WITHOUTCHANGING TURN OFF/ONAUTO SENSITIVITY TURN ON/OFF LIGHTS FEET-FATHOMS-METERS CHART ALARM SET X-3 LCG RECORDER 2nd-5 2nd-2 2nd-B 2nd-4 2nd-O or 2nd-2nd 2nd-0-0 STOP/RESUME STOP/RESUME 0, 1, or 2-DISC WINDOWSIZE-2nd-8 PRESS KEY PRESS KEY PRESS FAST KEY PRESS SLOW KEY PRESS 2nd-FAST or SLOW > < PRESS AUTO KEY 2nd-9 2nd-6 SET or DEEP SETSELECT-SHALLOW UP ARROW or DOWN ARROW TO ADJUSTDEPTH ALARM DEPTHSELECT-SHALLOW SHALLOWSET-DEEPALARM DEPTH DEEP SET 2nd-O-SELECT NOTE KEY' DEPTH ALARMSET CLEAR ALARM TURN ALARM SPEAKER OFF/ON · LOWRANCE ELECTRONICS, INC. 988-0105-04 12000 E. 74128 PDF compression, OCR, web-optimization with CVISION's PdfCompressor INDEX Installation Power Connections BASIC OPERATION 2 3 4 5 7 8 o 8 9 OFF/ON Sensitivity SHALLOW WATER OPERATION ______ ______ Theeasiestway to do this is to press I 2ND I I 4 HISPOJ ______ _______ Next, select a depth range. ChartSpeed Clear Range In very shallow water, (less than eight feet)the LCG may operate better with the automatic and digital functions turned off. ( Auto Range Lower Limit Upper Limit Digital lithe sensitivityis too high, press Selectingthe high speed scroll feature not only gives a high àhat speed, but also turns off the digital sonar, auto sensitivity, and auto ranging. If a slower chart speed is desired, press the 2nd key and then the 4 key again. Thiswill turn off the High SpeedScroll mode, howeverthe automatic sensitivity, auto ranging and digital function will remain off. The sensitivityis too high if the screen appearsblack, obscuring the bottom signal. ALARMS Chart Alarm Clearing Chart Alarm Depth Alarm Clearing Depth Alarm Light Discrimination ADVANCED OPERATION " 14 15 15 16 17 17 18 18 19 High Speed Scroll FASTRAK Feet-Fathoms-Meters Auto Range with Zoom Bottom Track Auto Sensitivity Other Tips Transducers and Cone Angles Signal Interpretation Fish Signals Surface Clutter Water Temperature and Thermoclines Surveyinga Lake Bait Fish Troubleshooting Specifications Row to Obtain Service Schematic Diagramand Parts List SHALLOWWater Operation 20 21 22 22 23 24 25 27 27 29 29 30 31 32 32 34 34 PDF compression, OCR, web-optimization with CVISION's PdfCompressor 1 INTRODUCTION The LowranceX-3 Liquid CrystalGraph (LCG) is a compact unit that packs more power and featuresthan anyothersonar using a liquid crystal display (LCD. ). Insteadof a stylus writing on chart paper or a flashing neon light, the X-3 displays the depth information on a screen using small squares which turn black whenan echo is received. [. . . ] So fish will do without food rather than venture into waterthat is too hot or too cold; others will shift position for a temperature change as slight as one-half of one degree. While some fish havea wider temperaturetolerance than others, each of them has a certain range within which it tries to stay. Schooling fish suspended over deep waterlie at the level that providesthis temperaturein which, we assume, theyare the most comfortable. 18 AUTO RANGE tAUTO RNG When the X-3 is firstturned on, the AUTO RANGE function is enabled. (In this manual, pressingkeys in sequence as just described will be shown like this: 2nd-B. ) TheAUTO RANGING annunciator in the bottom right hand corner ofthe displaywill disappear, signifying the automatic ranging capability hasbeen tumed off. To return to the AUTO RANGE mode, simply press the 2nd-8 keys again and the unit will automaticallytrackthe bottom and place it in the lower 4/5 of the screen. 8 27 PDF compression, OCR, web-optimization with CVISION's PdfCompressor SCALE There are ten scale markers printed on both sides of the X-3's display to help determine whatthe depth of a target is. For example, if the depth range is 0 to 60 feet, then each mark is equal to six feet. If the target (such as a fish) was next to the 5th line, then it is 30 feet deep (5 lines times six feet=30feet). To make it easier to use the depth scale, use ranges in multiples often, i. e. 10, 30, 140, etc. Remember, there must be some movementbetween the boat and the fish to developthe arch. Usuallythis means trolling at very slow speeds with the main engine in gearat a minimum throttle setting. Thedepth of the water will affect the size and shape of the fish arch due to the coneangle diameter. For example, if the cone passesover a fish in shallow water, the signal displayedon the X-3 may not arch at all, due to the narrow conediameter and the resolutionlimitations of the display. Comparedto a paper graph, the X-3 cannot show as finedetail because the pixels (dots on the screen) are much larger than a paper graph's. Therefore, the X-3 cannot show fish arches as wellas a graph. c:: ·iui SENSITIVITY/CHAR Ii. --. ---- -- SCALE MARKERS 12 -- 24 Very small fish probably will not arch at all, while medium sized fish will show a partial arch, or a shape similar to an arch, if they're in deep water Large fish will arch, but the sensitivfty must be turned up, especially in deeper water There will be times when the sensitivitycannot be turned high enough to get fish arches becauseof the heavy surface clutter, therrnoclines, etc. One of the best ways to get fish arches is to expand or "zoom" a segment of the water, for example40 to 60 feet. Thesmaller the segment the better the screen resolution will be. Then, turn up the sensitivityas high as possible without getting too much noise on the screen. In medium to deep water, this method should workto displayfish arches. Figure 6 1llmm36 48 LILI AUTO. RANUING ----"OHIO LOWER LIMIT F LOW1 LIMIT J To change the lower limit, press the lower limit desired from 10 feetto 999 feet and then press the LOWER LIMIT key. Thedisplay will immediately change to the new depth range and display the new lowerlimit at the bottom ofthe screen. The lower limit may be changed anytime, even if the AUTO RANGE function is on. However, if a lower limit is selected that is less than the depth ofthe bottom whilethe unitis in the AUTORANGE mode, it won'taccept the entry For example, supposethe X-3 is in the AUTO RANGE, mode and the lower limit is 75 feet with the bottom at 60 feet If a new lower limit of 55 feetwereentered on the keyboard, the X-3 would chirp, and keep the lowerlimitsetting of 75 feet. P1 Figure 22 9 26 PDF compression, OCR, web-optimization with CVISION's PdfCompressor FISH SIGNALS The signals displayedon the X-3 by fish can be identified by various shaped markings in certain patterns, as opposed to random marks created by noise, or the solid, continuous markings made by the bottom. Individualfish can, attimes, be distinguished by a characteristicarch that separatesthem from their stationarysurroundings. The reason for this is shown below. The distanceto a fish when it moves intoa sonar's cone of sound is shown as "A" Figure 21. When the fish has moved into the center of the cone, the distance to it will be shorter, "B" and as it moves out of the cone, the distancewill increase again as shown in "C". For example, to set the range from 0 to 31 feet, press 3-1 -LOWER LIMIT. If a partial arch occurs mostof the time on your unit(the mark curves up, but not back down, or vice-versa)it could be the transducer is not pointed straight down. If the transducer is mounted on the transom, adjust it until the fish show the distinctive arch. [. . . ] To setthe Deep alarm, press the desired depth using the numberkeys on the keyboard, then press the DEEPSET key. For example, if a Deep alarm setting of 55 feet is desired, press 5-5-DEEPSET. Thenumber55 will show in the display in large numbersfor 6 seconds and then disappear. Now if the waterdepth goesbelow 55 feet the alarm will sound. NOTE: Themaximum alarm depth setting is 999 feet 20 PDF compression, OCR, web-optimization with CVISION's PdfCompressor 15 Figure 18 28 iuuammm·iuu FASTRAK The FASTRAK causesthe X-3 to display the bottom, fish, trees, or other echoes including the bottom signal will be converted into short, straight horizontal lines. As the bottom or otherechoes moves shallow or deeper, the lines will rise or fall accordingly. This gives quick, precise depth informationat a glance. [. . . ]