User manual NAVMAN TRACKER 500

[. . . ] NAVMAN Contents 1. 0 Tracker500/500i Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. 1 1. 2 1. 3 The Global Positioning System (GPS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Commonly Used Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Operating the Tracker500/500i . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] The Tracker500/500i indicates speed over the sea bed. A speed/log instrument indicates speed through the water. If there is any tidal current, these two will be different. 9. 1 Fuel used reset This resets the fuel used figure to 0. 0. 16 Tracker500/500i User Manual 9. 2 Fuel used calibration (Transducer calibration) Without calibration, accuracy can be expected to be better than 10%. By recording the actual fuel usage of your boat over a period of time, it will be possible to adjust the Tracker500i to give consistently accurate readings within a 2% tolerance. In a twin engine installation you can calibrate the port and starboard transducers independently. To calibrate your fuel transducer you will need to accurately measure the fuel used. This is most easily done with a small portable tank. It should be noted that, due to air pockets, it is very difficult to fill under-floor tanks to the same level twice. At least 15 litres should be used to ensure an accurate calibration. Each transducer in a twin engine installation must be calibrated. This may be done at the same time with two portable tanks, or at different times with one tank. The procedure is as follows: 1) Reset the fuel used amount on the Tracker500i to 0. 0 2) Connect the measurement tank(s) to the engine(s) via the fuel transducer(s). 3) Run the engine(s) at normal cruising speed until at least 15 litres is indicated (30 for twin engines). 4) Check the actual amount of fuel used per engine. The easiest way to do this is to refill the tank(s) to the original level(s) and record the value(s) shown on the fuel dispenser. The amount that the Tracker500i has recorded is displayed. Use the cursor keys to enter the actual fuel amount used. Confirm that you want to save the changes. (Repeat for other engine in twin engine installation). Single Engine Twin Engine This is an indication of the calibration factor. It will be 1. 00 as a default. Tracker500/500i User Manual 17 9. 3 Fuel remaining change The fuel remaining value must be changed manually each time you change the amount of fuel in the tanks (e. g. If it is not, this figure will be meaningless. 9. 4 Fuel remaining low alarm You can use this feature to warn you when your fuel remaining drops below a certain value. When the level drops below the value set, a message box saying "Fuel low alarm" will display, and the unit will beep until "OK" is selected. [. . . ] A speed/log instrument indicates speed through the water. If there is any tidal current, these two will be different. Speed/log instruments are often not calibrated accurately and do not accurately show the boat's speed. Tracker500/500i switches itself off. Some previously available navigation functions are no longer available. `GPS FIX LOST' message displayed. Prolonged period to obtain a fix. Position indicated on Tracker500/ 500i varies by up to 100 metres from true position. Indicated speed does not match the boat's speed/log instrument. Tracker500/500i User Manual 39 Indicated heading does not match the boat's compass. The boat must be moving before the Tracker500/ 500i can determine its direction. [. . . ]