Lowrance X-15A Installating And Operation Manual Download | Manualshive

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Summary of Contents for X-15A

Page 1: ...sbrimination SCC or Pulse Widthat the bottom of thepage simplypress2nd and thenthe corresponding key DISC 5CC MARK or PULSE and it will be reprinted immediately PaperSaving Feature APPROXIMATE PAPER SPEED Without Alternate Transmit and Print Minimum I Maximum LOWER LIMIT PaperSpeed PaperSpeed Inches Hours Inches Hours RANGE feet 10 120 Per Mm Per Roll Per Mm Per Roll 1 0 10 2 35 4 25 130 510 0 5 2...

Page 2: ...re mak ing them more legible 2 Reduces the possibility of wrap around Thisis the un desirable occurrence of the second or third bottomecho printed on the paperat the top or middle of the page Many timesthis caninterfere withfish or other targets that you wish to see 3 Reduces the reverberation ef fect Thishappens mainly on lower frequency units but it can happen on higherfre quency models Reverber...

Page 3: ...romthe re ceiver determine whichsignals are noiseand eliminate them then print only the legitimate echoes Using this concept the transmit ted pulsedoesnothave to be increased therefore records with high resolution and high noise im munity can be achieved The Suppressor Control may be used withthe Discrimination to cancel OUTheavy interference or noise whenever high resolution is not required There...

Page 4: ...ter it is easier for the unitto detect along er pulsecoming backfromthe bottom orfrom fish Thisis called Probability of EchoDetection The probability of the unit being ableto detect an echo returning fromdeep water is diminished be causethe furtherthe sound pulse hasto travel theweakerit be comes By broadening the pulse length in essence alargersignal istransmitted and it is easierfor the receiver...

Page 5: ...ly even a blob on the paper With a400 ps transmitpulse width thosesametwo fish will haveto be at least 12 inches apart before they will show up as two separate archeson the graph This is why it is important to leave the sectionentitled Advanced Op eration Thischapterwill describe several otherfeaturesthat will en able the seriousoperatorto get the maximum benefit fromthis equipment Weurge youto re...

Page 6: ...turn the unit on The Sensitivity knobworks much like thevolume control on aradio that 100 is weakersignalswill be detected with highersettingsof the knob When cruising or at othertimes whenjustsimple bottom contour information is desired the Sen sitivity settingcan be low In deep wateror oversoft muddy bot zoo toms which produce weak 8 at3db echos the settingwill have to be higher into the unit an...

Page 7: ...dow Except for small pieces of tape Don tforgetto tapethe paper to the take upcore Don t rotate the stylus belt up Don t useoilycloths strong sol vents or abrasive cleansers TROUBLESHOOTING SECTION Symptom On Off switchis ON but the stylus and paperdon t move WhatTo Do Check fuse checkconnections at battery for tightness and corrosion Symptom On Offswitch is ON havezero mark but no echoesor bottom...

Page 8: ...he stylus at the centerof theplaten 4 Grasp the beltatthestylus holderwith the thumband forefingerand move itgently ratic unwanted noise marks Most of the timeat lowor trolling speeds no suppression will be necessary Figure 7 ppj P Vp fl a L2 Figure 9 suPPRESSION TOO HIGH Figure 33 Figure 34 1L1 as 42 Figure 8 Figure 10 PROPER SETtING Paper SpeedControl This knob adjusts to speed of thechartpaper ...

Page 9: ...s on the holder Be sure it moves freely inthe two slots Ifnot bend the stylusawayfrom the edge it is rubbing on until it does move freely 7 Afterinstalling ifthestylus won t print all theway down the paperas shown in Fig ure 35 bend the right leg down even furtherby adjusting the pa per speed control Remember if gapsin therecord appear turnthe paper speed down until asolid record is achieved The p...

Page 10: ... will thenbe displayed 26 92 52 62 fl L hB B I Figure 16 Example Set range to 40 60feet Press 4 0 UPPER LIMIT The range will then be displayed See Figure17 The Upper and Lower Limits can be used in various combina squarely to the take upcore See Figure 30 Small pieces of tapemaybe stored inside the housing for this purpose Closethe top oftheplaten assembly by pressing the two tabs together on the ...

Page 11: ...at anytime simply press either the UPPER LIMIT or LOWER LIMIT keys Thecurrent rangewill be printed on the paper immediately Thiswill not change the depth setting LINES When the X 15A is firstturned on depth lines will be printed on the paper If youdesire to turnthe Linesoff press the LINES key To turn the linesbackon press the LINES key again Example Turn lines off Press LINES key Result MARKER An...

Page 12: ...or vice versa it is because thetrans ducer is not pointed straightdown If yourtransducer is mounted on the transom adjustthe transducer until thefish showthe distinctive arched signature This maytake sometrialand error until thecor rect mounting is achieved Sharp well defined signatures will occurmostoften whenthe Sensitivity knobis set at the point or higher Remember that theremustbe some movemen...

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