User manual NORTHSTAR 951

[. . . ] ADDENDUM to Northstar 951/952 GPS Chart Navigator Operator's Manual (P/N GM1500C, Revision B) This addendum applies to 952 software version 4. 02 and later Northstar Technologies, Inc. 30 Sudbury Road Acton, Massachusetts 01720 (978) 897-6600 P/N GM1511 Rev. [. . . ] The 952 ignores any course changes if your speed is under half a knot. The chart will rotate sooner for large turns than for small ones. Leg-up - You'll see your vessel's current leg to a waypoint-- whatever direction that is--pointing straight upwards. The 952 will adjust the chart on a leg-by-leg basis, so the chart turns accordingly whenever you start navigating on a new leg, even if you haven't turned the vessel yet. Exception: If you select leg-up when you aren't currently navigating, the 952 automatically uses course-up--until you start navigating along another leg. If you're viewing course-up or leg-up, the text from the Navionics cartridge is tilted to match the rotation angle in order to avoid text overlap. CHANGING THE ROTATION SETTING To change the chart rotation setting: Press the Press key to display the CHART screen. the CHART SETUP key to display the CHART SETUP/ STATUS screen. Press the ROTATION IS key to select among the three choices: · rotation is north up · rotation is course up ­2­ Addendum P/N GM1511 10/15/01 · rotation is leg up When you see the desired choice, press the RETURN key to display your choice on the CHART screen. UNDERSTANDING THE ROTATED SCREENS The following three screens show how the chart looks if you're travelling along a sample route that has four waypoints, and you rotate the chart from north-up to course-up and then to leg-up. Figure 1: North-up chart angle (first leg going northwest) Figure 1 shows the vessel heading northwest on the first leg from the first waypoint to the second one. The chart's viewing angle is set to north-up. Notice the direction of the north-pointing arrow in the upper right corner. ­3­ 10/15/01 Addendum P/N GM1511 Figure 2: Course-up chart angle (second leg going east) Figure 2 shows the same chart, but with the chart's viewing angle now set to course-up and the vessel on a slightly different course than the second route leg. Notice the new direction of the north-pointing arrow. ­4­ Addendum P/N GM1511 10/15/01 Figure 3: Leg-up chart angle (third leg going south) Figure 3 shows the same chart, but with the chart's viewing angle now set to leg-up and the vessel on a different course than the third leg. Notice the new direction of the north-pointing arrow. [. . . ] These edges are shown as black or red dashed lines. The lat/lon grid will be labelled only when the chart is north-up. · · ­6­ Addendum P/N GM1511 10/15/01 [. . . ]