Furuno FSV-84 manual Presentation Mode, Presentation mode description, Presentation modes

2. HORIZONTAL MODE

2.13Presentation Mode

2.13.1Presentation mode description

This sonar has four presentation modes, head-up, north-up, course-up and true motion, and you may select one with PRESENTATION MODE in the OTHERS - DISPLAY SETTING menu.

N

Head-up

N

N

North-upCourse-up

Presentation modes

N

True Motion

Head-up:The display is oriented toward ship’s heading. Own ship position is fixed at the screen center. Echoes from fish and the bottom move on the screen relative to own ship’s movement. This mode is useful for general use.

North-up:The display is oriented so North is at the top of the screen. Own ship position is fixed at the screen center and own ship mark pivots with ship’s movement. Echoes from fish and the bottom move on the screen relative to own ship’s movement.

Course-up:The display is oriented according to course. Own ship position is fixed at the screen center. Echoes from fish and the bottom move on the screen relative to own ship’s movement. Targets are displayed at ship’s bow.

True Motion: Stationary objects are fixed and own ship and fish echoes move on the display in accordance with their true courses and speeds. Thus you can observe own ship and fish echo movement with respect to the bottom. This mode requires speed and heading data. When own ship mark reaches an edge of the off-center effective area it is automatically returned to the screen center as below.

N

Offcenter effective area

N

(a)Own ship mark reaches an edge of offcenter effective area

(b)Own ship mark is automatically returned to screen center

Automatic return of own ship mark in true motion

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