User manual LOWRANCE LMS-335CDF

[. . . ] 988-0156-011 www. lowrance. com LMS 330C & LMS 335C DF Fish-finding Sonar & Mapping GPS Installation and Operation Instructions Copyright © 2004 Lowrance Electronics, Inc. Lowrance® is a registered trademark of Lowrance Electronics, Inc. MapCreate is a trademark of Lowrance Electronics, Inc. Navionics is a registered trademark of Navionics, Inc. Points of Interest Data in this unit are by infoUSA, copyright 2001-2004, All Rights Reserved. [. . . ] This will be entered as a positive 1. 5 feet, which makes the depth indicators perform as if the transducer's higher in the water than it really is. Press MENU|MENU| to SONAR SETUP|ENT| to SET KEEL OFFSET|ENT. 2. The Keel Offset dialog box appears with a plus (+) sign at the front of the box. Press to the first number, then press to change the number to 1. Press to the second number, them press to change the number to 5, then press EXIT. The depth indicators now accurately show the water depth from surface to bottom. Sensitivity & Auto Sensitivity The sensitivity controls the ability of the unit to pick up echoes. Sensitivity can be adjusted, because water conditions vary greatly. A low sensitivity level (from zero to 50 percent) excludes much of the bottom information, fish signals, and other target information. High sensitivity levels let you see this detail, but it can also clutter the screen with many undesired signals. Typically, the best sensitivity level shows a good solid bottom signal with Grayline and some surface clutter. Automatic Sensitivity The default sensitivity mode is automatic. The unit bases the sensitivity level on water depth and conditions. When the unit is in the automatic mode, sensitivity is automatically adjusted to keep a solid bottom signal displayed, plus a little more power. This gives it the capability to show fish and other detail. However, situations occur when it becomes necessary to increase or decrease the sensitivity. This typically happens when you wish to see more detail, so an increase in sensitivity is indicated. Or, wave action and boat wakes can create enough tiny air bubbles to clutter much of the water column. In that case, a decrease in sensitivity is indicated to reduce some of the clutter. The control bar used to adjust sensitivity up or down is the same whether the unit is in the automatic or manual mode. In automatic you can adjust sensitivity up to 100 percent but the unit will limit your minimum setting. In auto, the unit will continue to make small adjustments, allowing for the setting you selected. In manual mode, you have complete control over sensitivity, with the ability to set it anywhere from zero to 100 percent. [. . . ] We reserve the right to do so without notice. . . . in Canada: If you're in Canada 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: 800-661-3983 905-629-1614 (not toll-free) 8 a. m. [. . . ]