Furuno FCR-2107-D Manual De Usuario

2. Radar Operation 

Own ship position, or sweep origin, can be displaced to expand the view field without switching to a larger range 
scale. The sweep origin can be off-centered to the cursor position, but not more than 75% of the range in use; if the 
cursor is set beyond 75% of the range scale, the sweep origin will be off-centered to the point of 75% of the limit. 
This feature is not available on ranges higher than 72 nm. 

Note 1: If the position of the CCRP results in a part of the bearing scale not being distinguishable, that part of the 
bearing scale is indicated with appropriate reduced detail. 

Note 2: When the reference point is set for "conning position (CCRP) and the position of the antenna is more than 
75% of the effective radius, offcenter is not cancelled on short ranges. 

To off-center the radar picture, do the following: 

1.  Use the trackball to put the cursor at a position where you 

wish to move the sweep origin. 

2. Push 

the 

OFF CENTER key. The sweep origin is off-

centered to the cursor position. 

3. To 

cancel 

off-centering, push the OFF CENTER key again. 

1.  With the cursor inside the effective display area, spin the 

scrollwheel to display "TM Reset/Info/Ship Offcenter" in the 
guidance area. 

2.  Use the trackball to put the cursor where you want to locate 

the screen center. 

3.  Push the right button to off center the sweep origin. 

4.  To cancel the off-center function, show "TM Reset/Info/Ship Offcenter" in the guidance area then push the right 

button. 

 

The echo stretch feature enlarges targets in the range and bearing directions to make them easier to see, and it is 
available on any range. There are three types of echo stretch, 1, 2 and 3, and the higher the number the greater the 
amount of stretching. 

The echo stretch magnifies not only small target pips but also returns (clutter) from sea surface, rain and radar 
interference. For this reason, make sure these types of interference have been sufficiently suppressed before 
activating the echo stretch. 

1.  Use the trackball to select the ES indication at the left side of the screen. 

2.  Push the left button to select the echo stretch level desired. The indication changes in the sequence of OFF, 1, 2, 

and 3.