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Содержание X-20

Страница 1: ...X 20 INSTALLATION AND OPERATION INSTRUCTIONS LITHO IN U S A 988 0105 17 LOWRANCE ELECTRONICS INC 12000E SKELLYDR TULSA OK 74128 PDF compression OCR web optimization with CVISION s PdfCompressor ...

Страница 2: ...RTSPEED RANGE ZOOM DIGITAL FISH I D FEATURE AUTO ALARMS CHARTALARM FISH ALARM SPEAKER LIGHT MODE TRANSDUCERS ANDCONE ANGLES SIGNALINTERPRETATION FISH ARCHES WATERTEMPERATURE ANDTI IERMOCLINES SURVEYING A LAKE BAIT FISH HOWTO OBTAINSERVICE SPECIFICATIONS GLOSSARY Copyright 1989 Lowrance Electronics Inc Allrightsreserved I __J S p J iLI L4fl ACTUAL UNRETOUCHED PHOTOGRAPHS TAKEN ON GRAND LAKE OFTHECH...

Страница 3: ...0 isa high quality sonar designed for both professional and novice users These units have an automatic feature that finds and displays the bottomdepth fish and structure As you becomefamiliarwithyourX 20 youcan finetune the unittothesurroundingconditions togetthe mostfromyoursonar C YoucanprogramtheX 20to sound an alarmwhenafishorother sus pendedobjectentersan alarm zone Youcan zoom in and separat...

Страница 4: ...er of pixels per squareinch on a liquid crystal display Typically the greater number of verticalpixels the bettertheresolution PULSELENGTH Theamount oftimethatthesonartransmits Thisis measured in micro seconds The shorter thepulse length the better the resolution Forexample a30 micro second pulselength is equal to aone inch resolution RANGE The section of water shown on the sonar display For examp...

Страница 5: ...generators is the engine s wiring harnessthat runs fromtheengine to the instrument panel This harness usually contains a wire for the tachometer which radiates RF radio frequency energy For best results keep the powerand transducer cablesaway from the engine wiring Also bilge pump wiring can sometimes radiatenoiseso tryto keepthe X 20 s cables awayfromthosewires VHF radio antenna cables typicallyr...

Страница 6: ...allowerordeeperwaterthanthe alarmsetpoints BACK LIGHTED Adisplayor keyboard illuminated frombehind by a light Back lighted displays areessential when nightfishing or navigat ing CAVITATION Airbubbles created by the highspeedmovement of a boatortransducer through water CHARTSPEED 1 The speed of thechartpaperon a papergraph recorder 2 The speed of an image acrossthe screen of a liquid crystal graph ...

Страница 7: ...aveyoutheinconvenience of returning yourunit Iftheunitmustbereturned packitcarefullyso itwon t bedamaged It is advisable to insure theunitin caseit s lostordamaged duringtransit Mail To Lowrance Customer Service 12000 E SkellyDrive Tulsa OK 74128 r 1 SENS _______ This key and the arrow keys adjustthegraph ssensitivity The digital s sensitivity is adjustedby the unit automati cally The receiverhas3...

Страница 8: ...layerinthewater butthesensitivity will probablyhavetobeturneduptosee it SURVEYING A LAKE The most successful anglers on anybodyof waterarethosewhofish it day afterday and yearafteryear Eventually theylearn thehot spots that produce fish consistently They discover through experience where and at whatdepth theycan expect to findthe fishtheywantat any season And they realize that these productive are...

Страница 9: ...bottom Thedigital depth flashes 0 until itfinds and locks onto the bottom You can leavethesensitivity in the automatic mode or manually adjustitto suit conditions Youmayneedto increase thesensitivity to show fish symbols whenthe unit is inautomatic To dothis firstpressthe SENS key The letters SENS will flashonthe right side ofthedisplay Averticalbarappears on theleftside ofthescreen See below This...

Страница 10: ...e it or the down arrow key to decrease it As you press the arrow key the sensitivity bar moves up or down according to the sensitivity level chosen Youcanadjustthesensitivity inthesamemannerwhentheunitisinthe manual mode Verysmall fishprobablywill not arch at all Medium sizedfish willshow a partial arch or a shape similar to an arch if they re indeepwater Largefishwill arch butturnthe sensitivity ...

Страница 11: ...ison thebottomdepthwill still bedisplayed Thedigitaldoesnotstopwhenthechart isinthe freeze mode 20 9 CHARTSPEED Atpoweron thechartspeed scrolls at a presetspeed To change the speed pressthe CHARTSPEED key Theword CHART willflash on therightside of thedisplay A vertical bar will also appearon the left side ofthe screen This indicates thecurrentchartspeed Next press the up arrow key if you wish to i...

Страница 12: ...nge is 0 60feet and thezoom key is pressed thenew range will be30 60 feet Iftheunit isinautomatic thebottomwillbe tracked inthis30footwindow There aretwo exceptions tothis rule 1 Ifyou re on the0 15 range and pressthezoom key thenew rangewill be 10 15 2 Thereis nozoomon the 0 5 range ings even thoughthe bottom signal is much wider onthe 20 degree model This is because youare seeing moreofthebottom...

Страница 13: ...ne footincrements Forexample if the unitis onthe0 60toot range andthemanual mode ison pressing thezoomkey thenthedown arrow keyoncewill move the 0 60 range to 1 61 Thebestwayto usethisfeature isto changethe range to a smallerone then press thezoomkey shift therange until the area is displayed thatyouwantzoomed Forexample ifthebottomdepthis 50 feet andyouwishtoenlargetheareaimmediately aboveit firs...

Страница 14: ...vedifficultyshowingfish symbols tryincreasing thesensitivity NOTE The Fish l D fea ture cannot distinguish between fish and other suspendedobjectssuch asturtles tree branches trotlines submerged floats orotherinanimate objects The micro com puter in this unit is so phisticated but it canbe fooled The most difficult challenge is individual tree branchesextending out from groups of branches Thesecan...

Страница 15: ...o different alarms a chartalarm and Fish Alarm The chart alarm consistsof a barthat displaysontheleft sideofthescreen The alarm chirps whenever the unit detects an echo inside the boundaries ofthebar Fish Alarm sounds an audiblealarm when fish or other suspended objectsaredetected ItworksinconjunctionwiththeFish ID feature To separate the alarms thefish alarm s tonesoundsdifferentthanthe chartalar...

Страница 16: ...rmoff presstheCHARTALARM key then move thebottom ofthe bar all thewayto its shallowestposition usingthe up arrow key FISH ALARM Use the FISHALARM for adistinctiveaudiblealarm whenfishorother susupended objectsare detectedbythe FISH 1 0 feature Press the FISH l D and the AUTOkeys at the sametime The words FISH ALARM displays at thebottomright side ofthe screen The audible alarm sounds each time the...

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