Furuno FR-8122, FR-8252, FR-8062 manual North-up mode, True motion mode

	1. OPERATIONAL OVERVIEW
Course-up mode	Heading Line
North Marker

The course-up mode is an azimuth stabilized dis- play in which a line connecting the center with the top of the display indicates own ship's intended course (namely, own ship's previous heading just before this mode has been selected).

Target pips are painted at their measured dis- tances and in their directions relative to the intended course, which is maintained at the 0- degree position. The heading line moves in accor- dance with ship's yawing and course change. This mode is useful to avoid smearing of picture during course change.

North-up mode

The north-up mode paints target pips at their measured dis- tances and in their true (heading sensor) directions from own ship, north bearing maintained at the top of the screen. The heading line changes its direction according to the ship's heading.

True motion mode

Own ship and other moving objects move in accordance with their true courses and speed. In ground stabilized TM, all fixed targets, such as landmasses, appear as stationary echoes.

When own ship reaches a point corresponding to 75% of the radius of the display, own ship position is automatically reset to a point of 75% radius opposite to the extension of the heading line passing through the display center. You may also reset the own ship symbol manually by pressing the OFF CENTER key. The method of resetting is the same as men- tioned above.

North Marker Heading Line

North Marker Heading Line

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