User manual LOWRANCE X-1550

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   LOWRANCE X-1550 OPERATION MANUAL (368 ko)

Manual abstract: user guide LOWRANCE X-1550

Detailed instructions for use are in the User's Guide.

[. . . ] INSTALLATION AND OPERATION MANUAL MODEL X-1550 GRAPH RECORDER · LOWRANCE ELECTRONICS, INC. 74128 PDF compression, OCR, web-optimization with CVISION's PdfCompressor High Speed (46 MPH. ) SUPPRESSION: OFF SENSITIVITY: ON 1/2 POSITION (1 NOTE POOR RECORD CAUSED BY NOT USING SUPPRESSION WHEN AT HIGH SPEED. Figure 44 . . . - --r Il-i SUPPRESSION: ON -- ADEQUATE SETTING SENSITIVITY: ON -- 1/2 POSITION High Speed (46 M. P. H. ) Figure 45 · !'· a · r -- iii:-. a. ¾ aaYr, -. . '1 Figure 46 SUPPRESSOR: MINIMUM RANGE: 0 TO 80 FEET PULSE WIDTH: 100 MICRO-SECONDS SENSITIVITY: 3/4 LINES: OFF PAPER SPEED: MAXIMUM 21 PDF compression, OCR, web-optimization with CVISION's PdfCompressor Electronics, Inc. , Customer Service Department in Tulsa, OK. Please detail the problem you are experiencing. [. . . ] What To Do Be sure the transducer is plugged into the unit and the transducer is in contact with the water. Symptom The unit is ON, but paper does not move. What To Do Tape Paper to cardboard spool on take-uppost. sitivity knob should be set at about ¾ point. Refer to the illustration below to see what effectthe Sensitivity setting has on the recorded information. Recording individual fish with an "arched" signature can usually be accomplished at trolling speed with the Sensitivity knob at the 3/4 point, or higher. Referto the section "Arched Signatures, " on page 10 for more information about this important function of your recorder. Noise, in electronicterms, is any undesired signal. It can be caused by an electrical source, (such as the engine's ignition system), or by air bubbles in disturbed water which is called caviFigure 6 tation noise. In both cases, the noise could produce unwanted When high Sensitivity settings marks on the paper. (See Figure are used, a second bottom echo 44 & 45. ) Fortunately, noise pulses will appear. This is normal and is caused by the returning signal re- are relatively short in time comflectingoff the surface of the wapared to real sonar signals. Adter, making a second trip to the vancingthe Suppression knobwill cause the system to reject these bottom and back. about unwanted, short pulses without When detailed information brush piles, individual fish or the reducing the sensitivity in any way. This patented design is excluthermocline is desired, the Sen- Suppression Control The Suppression Control is Symptom Recorder marks are faint or dim. What To Do Clean viewing door; replace the stylus; check battery connections. Sympton Recorded marks are very heavy; paper is torn by stylus. What To Do Bend the stylus slightly to reduce pressure on paper. Don't forget to tape the paper to the take-up core. Don't use oily cloths, strong solvents or abrasive cleansers. TROUBLESHOOTING Symptom On/Off switch is ON", but the stylus and paper don't move. What To Do Check fuse; check connections VI ADVANCED OPERATION Surface Clarity Control (SCC) The surface markings at the top of the chart paper can, at times, extend many feet below the surface. This often interferes with the area that one is trying to graph. Surface clutter is caused by algae and plankton, air bubbles created by wave action or boat wakes, bait fish, or temperature inversions. The surface clutter can be reduced or eliminated by using the MARK/SCCkey on the control panel. To use the SCC, control, press 1 for minimum effect, 2 for an intermediate control, or 3 for maximum elimination of surface clutter, and then press MARK/SCC. A reduction of the surface clutter will im- 12 I , Figure 7 SENSITIVITY: TOO Low Figure 8 5 PDF compression, 16OCR, web-optimization with CVISION's PdfCompressor SENSITIVITY: PROPER SETTiNG sive with Lowrance. [. . . ] When the fish has moved to the center of the cone, the distance to it will be shorter, (line "B"), and as it moves out of the cone, the distance will increase again as shown in line "C". A remarkable advantage of the to bottom. Layers of different temperatures form, and the junction of a warm and cool layer of water is called a thermocline. The depth and thickness of the thermocline can vary with the season or time of day. In deep lakes there may be two or more, at different depths. [. . . ]

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