User manual LOWRANCE LCX-15 MT

[. . . ] LCX-15MT TM INSTALLATION AND OPERATION INSTRUCTIONS WWW. LOWRANCE. COM 75 Copyright © 2001 Lowrance Electronics, Inc. LCX-15MT is a trademark of Lowrance Electronics, Inc. Lowrance® is a registered trademark of Lowrance Electronics, Inc. USE THIS UNIT ONLY AS AN AID TO NAVIGATION. [. . . ] There will simply be more "wandering" of the data shown on the display. If you want better performance, many manufacturers (including Lowrance) sell a DGPS receiver that attaches to your GPS receiver. The DGPS system transmits correction signals that increase the accuracy to about 10 meters. The DGPS receiver takes signals from these land-based transmitters and gives them to the GPS receiver which then uses them to show a more accurate position. (You can use the signals from all of the Coast Guard DGPS stations for free, by the way. ) The downside to this is it requires another piece of electronic gear (the DGPS receiver). And you have to be close enough to a station to receive the DGPS signals. Generally, you find that using your GPS receiver without DGPS is both easy and amazingly accurate. It's easily the most accurate method of electronic navigation available to the general public today. Remember, however, that this receiver is only a tool. Always have another method of navigation available, such as a chart and a compass. Also remember that this unit will always show navigation information in the shortest line from your present position to a waypoint, regardless of terrain!It only calculates position, it can't know what's between you and your camp, for example. It's up to you to safely navigate around obstacles, no matter how you're using this product. 29 FINDING YOUR POSITION Auto Search To lock onto the satellites, the GPS receiver needs to know it's current position, UTC time, and date. (Elevation (altitude) is also used in the equation, but it's rarely required to determine a position. ) It needs this data so that it can calculate which satellites should be in view. It then searches for only those satellites. When your GPS receiver is turned on for the first time, it doesn't know what your position or elevation (altitude) is. It does know the current UTC time and date since these were programmed into it at the factory and an internal clock keeps the time while the unit is turned off. (If the time and/or date are incorrect, you can set it using the "Set Local Time" menu. See page 23 for more information. ) It begins searching for the satellites using the above data that it acquired the last time it was turned on. Since it's almost certain that you're not at our factory, it's probably looking for the wrong satellites. If it doesn't find the satellites it's looking for after five minutes, it switches to Auto Search. The receiver looks for any satellite in the sky. [. . . ] Be sure to include your name, return shipping address, and a daytime telephone number. Shipping Information When sending a product for repair, we recommend you do the following: 1. Always use the original shipping container and filler material the product was packed in when shipping your product. 2 Always insure the parcel against damage or loss during shipment. Lowrance does not assume responsibility for goods lost or damaged in transit. [. . . ]