User manual LOWRANCE LCF-1440

[. . . ] 988-0151-071 www. lowrance. com LCD Flasher Sonar Installation and Operation Instructions LCF-1440 Copyright © 2003 Lowrance Electronics, Inc. Marine-Tex is a trademark of Illinois Tool Works Inc. Lowrance Electronics may find it necessary to change or end our policies, regulations, and special offers at any time. All screens in this manual are simulated. For free owner's manuals and other information, visit our web site: www. lowrance. com Lowrance Electronics Inc. Tulsa, OK USA 74128-2486 Printed in USA. Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] When the sonar unit is first turned on and the backlight menu disappears, the display screen shows the Flasher page. Adjusting sensitivity in Auto Sensitivity Mode is similar to manually adjusting a car's speed with the accelerator pedal while cruise control is on. You can tell the car to run faster, but when you let off the gas the cruise control automatically keeps you from running slower than the minimum speed setting. In your unit, auto mode will let you increase sensitivity to 100 percent, but the unit will limit your minimum setting. This prevents you from turning sensitivity down too low to allow automatic bottom tracking. When you change the setting with auto turned on, the unit will continue to track the 7 bottom and make minor adjustments to the sensitivity level, with a bias toward the setting you selected. Adjusting sensitivity in Manual Sensitivity Mode is similar to driving a car without cruise control -- you have complete manual control of the car's speed. In your unit, manual mode allows you to set sensitivity at 100 percent (maximum) or zero percent (minimum. ) Depending on water and bottom conditions, the bottom signal may completely disappear from the screen when you reduce sensitivity to about 45 percent or less!Try adjusting sensitivity in both auto and manual modes to see how they work. These figures show results of different sensitivity levels. At left, a high Sensitivity setting shows a display crowded with many return signals. At right, a lower Sensitivity setting shows only a few strong returns. To adjust sensitivity: Press MENU until the SENSITIVITY ADJUSTMENT menu appears. Press UP ARROW to increase the sensitivity, DOWN ARROW to decrease it. As you change the setting, echoes scrolling onto the screen will show the effects of the change. If you reach the maximum or minimum sensitivity level, a tone sounds alerting you to the limits. NOTE: If you want to change the sensitivity in Manual Mode, first turn off Auto Sensitivity: press MENU until the SENSITIVITY AUTOMATIC/MANUAL menu appears. To adjust the sensitivity, follow the same steps used for adjusting sensitivity in auto mode above. 8 GRAYLINE® Grayline lets you distinguish between strong and weak echoes. It "paints" gray on targets that are stronger than a preset value. This allows you to tell the difference between a hard and soft bottom. For example, a soft, muddy or weedy bottom returns a weaker signal which is shown with a narrow or no gray line. If you have two signals of equal size, one with gray and the other without, then the target with gray is the stronger signal. This helps distinguish weeds from trees on the bottom, or fish from structure. [. . . ] If you're in the United States and you have technical, return or repair questions, please contact the Factory Customer Service Department. Before any product can be returned, you must call customer service to determine if a return is necessary. Many times, customer service can resolve your problem over the phone without sending your product to the factory. To call us, use the following toll-free number: 800-324-1356 8 a. m. [. . . ]