User manual LOWRANCE X-24 INSTALLATION MANUAL

[. . . ] All featuresand specifications subjectto change withoutnotice. 29 PDF compression, OCR, web-optimization with CVISION's PdfCompressor SENSITIVITY - The ability of a sonar unit's receiverto display targets. Increasing the sensitivity allows weakertargets to be displayed. Also called "gain". SCROLL SPEED - See CHARTSPEED. SHOOT-THROUGH-HULL - A transducer installation which allows the sonar signalsto pass through a fiberglass hull withoutcutting a hole in the hull. SUPPRESSION - A method used in some sonar units to help eliminate interference or noise. C INTRODUCTION Welcome to the world of sportfishing sonar, Your Lowrance X-24 is a high quality sonar designed for both professional and novice users. [. . . ] This is essential when you're far from shore on a big lake. Unless you mark the school of fish when you're over it, you may not be able to find it again. 23 6 PDF compression, OCR, web-optimization with CVISION's PdfCompressor WATERTEMPERATURE AND THERMOCLINES Water temperature has an important-if not controlling-influence upon the activities of all fish. Fish are cold blooded and their bodies are always the temperature of the surrounding water. During the winter, colder water slows down their metabolism. At this time, they need about a fourth as muchfood as they consume in the summer. Most fish don't spawn unless the water temperature is within rather narrow limits. A surface temperature meter such as Lowrance's LDT3000 helps identifythe desired surface water spawning temperatures for various species. Trout can't survive in streamsthat get too warm. Bass and otherfish eventually die outwhen stocked in takes that remain too cold duringthesummer. While some fish have awider temperature tolerancethan others, each has a certain range within which it tries to OPERATION When first turned on, the X-24 is in the AUTO SEARCH mode. The micro-computer automatically adjusts the sensitivity and range to find and lock onto the bottom. Thedigital depth flashes"0" until it finds and locks onto the bottom. Medium sizedfish will show a partial arch, or a shape similar to an arch if they're in deep water Largefish will arch, but turn the sensitivity up in deeperwaterto seethe arch. Because of water conditions, such as heavy surface clutter, thermoclines, etc. , the sensitivity sometimes cannot be increased enoughto get fish arches. One of the best ways to get fish arches is to expand or "zoom" a segmentof thewater. The smallerthe segment, the betterthe screen resolution will be. For the best results, turnthesensitivityup as high as possible withoutgettingtoo much noise on the screen. In medium to deep water, this method should work to displayfish arches. You can adjustthe sensitivity in the samemannerwhentheunitis in the manual mode. 8 21 PDF compression, OCR, web-optimization with CVISION's PdfCompressor r ci 3. ; 11 i ZOOM flSH D CHART SPEED At power on, thechart speed scrolls at a preset speed. To change the speed, pressthe CHARTSPEED key. The word "CHART" will flash on the right side of the display. A vertical bar will also appear on the left side of the screen. Next, press the up arrow key if you wish to increase the chart speed. Press the down arrow key to decrease it. [. . . ] feature is not available with this mode. 'in -- --H-I p ALARMS The unit has two different alarms, a chart alarm and Fish Alarm. The chart alarm consistsof a barthat displayson the left side ofthe screen. The alarm "chirps" whenever the unit detects an echo inside the boundaries of the bar. 6" PDF compression, OCR, web-optimization with CVISION's PdfCompressor 16 13 or other suspended with the Fish ID. It works in conjunction To separate the alarms, the fish alarm's tone sounds differentthan the chart alarm. [. . . ]