User manual LOWRANCE X-55

[. . . ] I. . X-55 INSTALLATION AND OPERATION INSTRUCTIONS LITHO IN U. S. A. 988-0136-07 L!® 12000 E. SKELLY DR. , TULSA, OK 74128 LOWRANCE ELECTRONICS, INC. PDF compression, OCR, web-optimization with CVISION's PdfCompressor TABLE OF CONTENTS INTRODUCTION MOUNTING POWER CONNECTIONS TRANSDUCER KEYBOARD BASICS DISPLAY MENUS HELP WINDOWS VIEWING WINDOWS OPTIONS MODIFYINGGROUPS RESETTING ALL GROUPS SIDESCANOPERATION SONAROPERATION AUTOMATIC SENSITIVITY RANGE Upper and Lower Limits ZOOM Automatic Operation ZOOM Manual Operation ALARMS FISHALARM ZONEALARM DEPTHALARMS ALARMMUTE 1 2 3 3 4 5 s 5 7 7 S 8 g 9 10 11 r Cr rr N 1Ii I I FEET 45. 2 l. °F - I I 100 100 65+4 GROUP 11111 Al 100 GROUP "H" ft - II 12 13 14 14 15 16 17 18 18 18 19 20 21 21 21 MENU-PAGE1 CHARTSPEED GRAYLINE® FISH LD DISPLAYCONTRAST ti' i I! '. ã nL GROUP :1: --_-- 12 0 -- -- -- -- -- -- 29 35 'IS --I-- 60 HJII GROUP "K" MENU-PAGE2 ADJUST BACK LIGHTLEVEL BACKLIGHTON/OFF SPEAKER VOLUME TURN DIGITALBOX OFF CONSTRUCT DIGITAL BOX SN'JI MPH 21 II I MENU-PAGES CHARTCURSOR DISPLAY ZOOM BAR DISPLAYZONEBAR DIGITALSONAR MENU-PAGE4 FASTRAK SELECTUNITS OF MEASURE CLEAR DISTANCELOG MENU-PAGES ADJUST CHARTSURFACE CLARITY ADVANCED SIGNALPROCESSING(ASP) SIGNALINTERPRETATION TRANSDUCERS AND CONE ANGLES FISHARCI-JES WATER TEMPERATURE ANDTHERMOCLINES SURVEYING ALAKE BAITFISH SONAR TROUBLESHOOTING 22 22 23 23 23 24 24 24 24 25 25 26 26 26 27 28 28 30 31 !QL?JL ·' · n :iteura':u Oh I FEET I n. --I--- r . r -- a'a -- 535°F ·ITnliM:4Pa I UOLTS I 511 FT A:r:'biIJ 12. 6 ----i GROUP L" r FT 100 GROUP "M" 4@ag9 IUIW' 32 33 --INi I 100· I Copyright5 1992 LowranceElectronics °F Allrightsreserved. All featuresand specifications subjectto change withoutnotice. All screens in this manual are simulated. 6 5 +4 A!36. 5 GROUP"N" 37 GROUP"O" PDF compression, OCR, web-optimization with CVISION's PdfCompressor WINDOWS SUMMARY All ofthewindowgroups used bytheX55 are shown on the following pages. To viewthese groups, simply press the WINDOWSkey, then repeated press the down arrow key. [. . . ] Typically, the best sensitivity level shows a good solid bottom signal with Graylineand somesurfaceclutter. Whenthe X-55 is in the Automaticmode, thesensitivity is automatically adjustedto keep a solid bottom signal displayed, plus a little more. This gives it thecapabilityto showfish and other detail. However, situations occur where it becomes necessary to increase or decreasethe sensitivity. This typically happens when you wish to see more detail, so an increase in sensitivity is indicated. The procedureto adjust it isthesamewhethertheunitis in the automatic or manual mode. Toadjustthe sensitivity, presstheSENSkey. Thesensitivity adjustmenu appearsat thebottom of the screen. The sensitivity menu has left and right arrows, plus a horizontal bar graph. The graph givesa visual indication of the sensitivity level. The number above the INC arrow also showsthe percentage of sensitivityin use. To increasethesensitivity level, press the right arrow key. As you press the key, the menu's bar graph will grow wider and thepercentage will increase in value. You canalso seethedifference on thechart record as it scrolls. When the sensitivity is atthe desired level, release the key. Tochange the ASP level, press the MENU key five times. Then press the key nextto the "ADJUST LEVELOF CHARTASP" labeluntil the desired level is obtained. SIGNAL INTERPRETATION Your X-55 gives an accurate picture of the bottom that your boat is passing. A bottom of firm sand, gravel, shell, or hard clay returns a fairly widesignal. Ifthe automatic mode isoff and thesignal narrows down, then it means thatyouhave moved overa mud bottom. Mud absorbsthesound wave and returns a weaksignal. Turn up the sensitivity to see a better bottom signal. Big rocks or stumps on a smooth bottom send back signals above the bottom level signal. The height of the signal depends on the target's height. [. . . ] The percentage of chart speed in use changesas thearrow keysare pressed. The bar chart also gives a graphical indication of the chart speed. You can see the change onthescreen(both on the menu and on thechart record) as you pressthe keys. After you've made the adjustment, press the CLEAR key to erase the menu. the GRAYLINE setting that's best for you. differentGRAYLINE level, also. Thelevel chosenbytheX-55atpoweron is usually adequatefor mostconditions. [. . . ]