Furuno 1834C-BB User Manual

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2. RADAR OPERATION 
 
2-7
Heading Line
North Marker
Head-up display
Heading
 Line
North
 Marker
Course-up display
Heading Line
North
North-up display
Heading Line
North
True motion display
2.9.2  Description of presentation modes 
Head-up 
A display without azimuth stabilization in which the line 
connecting the center with the top of the display 
indicates own ship’s heading. Targets are painted at 
their measured distances and in their directions 
relative to own ship’s heading. 
 
The short line on the bearing scale is the north marker.   
 
Course-up   
The radar picture is stabilized and displayed with the 
currently selected course at the top of the screen. As 
you change heading, the ship’s heading line moves. If 
you select a new course, the picture resets to display 
the new course at the top of the display. 
 
Targets are painted at their measured distances and in 
their directions relative to the intended course which is 
maintained at the 0-degree position. The heading line 
moves in accordance with ship’s yawing and course 
changes.  
 
North-up   
In the north-up mode, targets are painted at their 
measured distances and in their true (compass) 
directions from own ship. North is maintained at the 
top of the screen. The heading line changes its 
direction according to ship’s heading. 
 
True motion   
Fixed radar targets maintain a constant position on the 
screen, while your own ship moves across the radar 
image at the correct speed and heading. A map-like 
image is displayed, with all moving vessels traveling in 
true perspective to each other and to fixed landmasses. 
As your ship’s position approaches the edge of the 
screen, the radar display is automatically reset to 
reveal the area ahead of your ship. You can manually 
reset your ship’s position at any time by pressing the 
B: RADAR DISPLY soft key followed by the B: SHIFT 
soft key.