User manual NORTHSTAR EXPLORER 660

[. . . ] Explorer 660 Chartplotter and Fishfinder Installation and Operation Manual www. northstarnav. com IMPORTANT SAFETY INFORMATION Please read carefully before installation and use. DANGER !It is used to alert you to potential personal injury hazards, Obey all safety messages that follow this symbol to avoid possible injury or death. WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury CAUTION indicates a potentially hazardous situation which, if not avoided, could result in minor or moderate injury. CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage. WARNING CAUTION CAUTION DISCLAIMER: It is the owner's sole responsibility to install and use the instrument and transducers in a manner that will not cause accidents, personal injury or property damage. [. . . ] The air in the swim bladder reflects the ultrasonic pulse, so the strength of the echo varies between fish species according to the size and shape of the swim bladder. When catching fish from a school, note the species and the strength of the echo that it returns on the A-scope. Then, when that particular echo is seen again, it is likely to be the same fish species. Sonar history A-scope display The display shows the sonar history on the left and the A-Scope display on the right. The A-Scope shows: · the strengths of echoes from different depths - the longer the horizontal line the stronger the signal Bottom type The shape of the echo strengths in the A-Scope can help you to recognise the type of bottom. Northstar Explorer 660 Installation and Operation Manual 41 10 Data display The data display has eight large numeric data fields, four lines with two fields per line, plus a graph of the water temperature and depth over the last 20 minutes. To show the data display, press DISPLAY, select Other, then select Data. To select what data is displayed: 1 2 Press MENU and select Data setup. Change a data field: i ii Press the cursor keys to highlight the field. Press ENTER to display a menu of the data that can be shown in the field. iii Select the data to show in the field; select None to leave the field empty. 3 4 Repeat the above step to set the other data fields. Press ESC. 42 Northstar Explorer 660 Installation and Operation Manual 11 Fuel display Used shows total fuel used since this was last reset with the Clear Used command. Remaining shows the amount of fuel remaining in the tank(s). Flow shows the fuel consumption per hour. For twin engine installations, the fuel flow for each engine is shown separately. This is useful for checking that both engines are under the same load. Economy is the distance travelled per unit of fuel used. The Explorer 660 calculates this from the boat speed and fuel used. The bigger this number, the better the fuel economy. Adjust the throttle and trim to achieve the best fuel economy. Note that the Explorer 660 uses a paddlewheel transducer to measure speed, used to calculate the fuel economy. Therefore, calibration of the boat speed measurement is essential for an accurate fuel economy reading. See section 15-11. To show the Fuel display, press DISPLAY, select Other, then select Fuel. The Fuel display can only be used when the optional single or twin engine fuel kit has been installed. [. . . ] A navigation tool based on GPS with some errors corrected (see section 7). Goto - A simple way of navigating straight to a waypoint or to the cursor position (see section 3-4). A satellitebased navigation tool (see section 7). Leg - The straight segments of a route between waypoints. [. . . ]