Furuno 1834C-BB User Manual

2. RADAR OPERATION 

The offset EBL can be used to predict a potential collision course. It can also be used to 
measure the range and bearing between two targets. 

 

The procedure below may be used to check if a radar target is on a potential collision 
course with your vessel.   
 
1. Press the EBL/VRM key to show the EBL/VRM soft keys. 
2.  Press the A: EBL1 ON soft key to turn on the EBL1. 
3.  Press the C: OFFSET soft key. The origin of EBL1 moves to the cursor position, which 

is marked with an “X.” 

4. Use the Trackball to place the cursor on the radar target which looks like it might be on 

a collision course with own ship. 

5. Push the ENTER knob to fix the origin position. 
6.  After waiting for a few minutes (at least three minutes), rotate the ENTER knob so the 

EBL bisects the target at the new position. If the target tracks along the EBL towards the 
center of the display (your ship’s position), the target may be on a collision course with 
your vessel. 

 
To cancel the offset EBL, press the C: OFFSET soft key. 

Initial target
position

Target tracked
here

°

VRM1
   ON

EBL2
   ON

VRM2
   ON

OFFSET