User manual NORTHSTAR EXPLORER 538

[. . . ] Explorer 538/538i Chartplotter 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. [. . . ] Set the throttle for minimum RPM; for a twin engine boat set both engines to about the same minimum RPM. Wait for about 60 seconds for the boat to stabilise, then press . Wait while the Explorer 538/538i records the data. Now, do not change the engine speed. Wait for about 60 seconds for the boat to stabilise, ensuring the Target RPM box stays green. Wait while the Explorer Then press 538/538i records the data. 7 The Explorer 538/538i repeats the above step to record data up to the maximum RPM. Then the Explorer 538/538i asks if you want to save the curve. The Explorer 538/538i asks for a name for the curve. Change the default name if required, then press . Note: To interrupt making the curve at any time, press . 5 Northstar Explorer 538i/538 Installation and Operation Manual 33 10-3-2 Managing fuel consumption curves Record several curves for different conditions. Renaming a curve 1 2 Press one or more times until the Setup menu is displayed, then select Fuel. Select Name, press and select the name of the curve to rename. Change the Deleting a curve 1 2 Press once or more until the Setup menu is displayed, then select Fuel. Select Name, press and select the name of the curve to delete. Select Delete and press . 3 3 10-3-3 Using fuel consumption curves A fuel consumption curve is displayed on the fuel display: a For a twin engine boat, keep the RPM of both engines similar while using a curve. To go to the Fuel display, press Other, then select Fuel. , select C A C Red marker: the boat speed now. This marker is below the red curve, showing that the boat speed now at this RPM is less than when you recorded the curve. D E B F Displaying a curve 1 2 Press , press and select the name of the curve to display on the fuel display. Using a curve Compare your boat's performance now, at the current RPMs, with the boat's performance when you made the curve. You can compare your boat's performance now with a curve made under ideal conditions or with a curve made under similar conditions. Information in a curve A B RPM of the boat now. For a twin engine boat, the RPM is the average of the two RPMs. [. . . ] 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 3-1). A satellitebased navigation tool (see section 7). Leg - The straight segments of a route between waypoints. [. . . ]