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Table of Contents
Related Manuals for Lowrance 1240A
Summary of Contents for Lowrance 1240A
- Page 1 1240A IN-DASH MOUNT SONAR INSTALLATION AND OPERATION INSTRUCTIONS http://www.lowrance.com...
- Page 2 INSTALLATION MOUNTING Your 1240A is designed for convenient mounting the dash of your boat, or it can be mounted on any flat panel that's at least four inches in diameter. If the sonar is to located in the vicinity of a magnetic compass, run it in position temporarily to make certain it doesn't affect the compass readings.
- Page 3 TO THE MOUNTING SURFACE AND NOT AT AN ANGLE. A "U" bracket is supplied to hold the sonar to the dash. Place it over the studs on the back of the unit and secure it using the nylon wing nuts provided.
- Page 4 "off" position. RANGE SELECT There are two scales on the 1240A - 0 to 40 feet and 0 to 100 feet. Make the selection by turning the large knob to the 40 or 100 setting. Depths greater than 100 feet can also be measured. For instance, as the water depth goes from 90 to 110 feet, you will see the bottom signal on the dial move past the "zero"...
- Page 5 If you're in doubt about the depth, turn the unit off until the scan disc stops. Turn it back on and watch to see if the bottom signal completes one revolution before stopping. If it does, the present water depth is the depth shown plus 100 feet.
- Page 6 "pulled-out" position gives the best interference rejection which is usually required when operating at speed. Because of the type of suppres- sion circuity used by Lowrance, the unit's sensitivity is not affected. (Sensitivity in a sonar unit is measured by the instrument's ability to read at depth plus show details.) A small amount of resolution will be lost when...
- Page 7 LOWRANCE ELECTRONICS FULL ONE-YEAR WARRANTY “We", “our”, or “us” refers to LOWRANCE ELECTRONICS, INC., the manufacturer of this product. “You” or “your” refers to the first person who purchases this product as a con- sumer item for personal, family, or household use.
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Page 8: Accessory Ordering Information
2) LEI Extras, Inc. P.O. Box 129 Catoosa, OK 74015-0129 On the internet, http://www.leiextras.com Lowrance Electronics may find it necessary to change or end our shipping policies, regu- lations, and special offers at any time. We reserve the right to do so without notice.