Increasing the sensitivity (+1 through +5) enables the unit to display the information from progressively smaller sonar returns. By decreasing the sensitivity (-1 through -5), the unit effectively filters small sonar returns. In murky or muddy water, it is often helpful to reduce the sensitivity. This prevents the display from being cluttered with sonar returns from debris or suspended particles. In very clear or very deep water, it may be helpful to increase the sensitivity since even the small

Keep in mind that the closer the update rate matches your boat speed, the more accurate is the graphic depiction of the terrain beneath your boat. Use the UP and DOWN ARROWS to select the desired update rate. The Display Speed setting is remembered when the unit is powered off. Battery Alarm. The Battery Alarm Option allows you to select the voltage level at which the Battery Alarm activates. At the Battery Alarm menu (under options), you will note that the default setting is OFF. Push the DOWN

handling and/or opening this unit may result in exposure to lead, in the form of solder. Dis-assembly and repair of this electronic unit should only be performed by authorized service personel. Any modification of the serial number or attempt to repair the original equipment or accessories by unauthorized individuals will void the warranty. handling and/or opening this unit may result in exposure to lead, in the form of solder. Warning: This product contains lead, a chemical known to the State o

Humminbird has built its reputation by designing and manufacturing top-quality, thoroughly reliable marine equipment. Your Humminbird is designed for trouble-free use in even the harshest marine environment. In the unlikely event that your Humminbird does require repairs, we offer an exclusive Service Guarantee - free of charge during the first year after purchase, and available at a reasonable rate after the one-year period. Complete details are included at the end of this manual. We encourage