Furuno FAR-1416, Operator'S Manual

Page: 56 / 226

1. OPERATIONAL OVERVIEW
1-42
1. Press the EBL key to display or activate an EBL (EBL1 or EBL2).
2. Place the cursor on a target appearing as threatening (indicated as “A” in the fig-
ure above).
3. Press the EBL OFFSET key and the origin of the active EBL shifts to the cursor
position. Press the EBL OFFSET key again to anchor the EBL origin.
4. After waiting for a few minutes (at least 3 minutes), rotate the scrollwheel until
the EBL bisects the target at the new position (A
1
). The EBL readout shows the
target ship's course, which can be true or relative depending on the EBL bearing
reference setting.
Note: If relative motion is selected, it is also possible to read CPA by using a VRM
as shown in left-hand figure at the top of the next page. If the EBL passes through
the sweep origin (own ship) as illustrated in the right-hand figure above, the target
ship is on a collision course.
5. To return the EBL origin to the own ship's position, press the EBL OFFSET key.
Using the on-screen box
1. Select the operational display area, then press the right button . The [CURSOR]
context menu appears.
2. Select [EBL OFFSET], then press the left button .
3. Select the operational display area, then press the left button . The EBL line is at-
tached to the cursor.
4. Place the offset EBL on the target appearing as threatening, then press the left
button .
5. After waiting for a few minutes (at least 3 minutes), operate the EBL used in step
4 until it bisects the target at the new position (A
1
). The EBL readout shows the
target ship's course, which can be true or relative depending on the EBL bearing
reference setting.
6. To return the EBL origin to the own ship's position, repeat steps 1 and 2, then
press the right button .
7. Close the menu.
1.33.2 How to set the origin point reference for EBL OFFSET
The origin point of the offset EBL can be ground stabilized (geographically fixed), north
stabilized (true) or referenced to own ship’s heading (relative).
1. Open the [MAIN MENU].
2. Select [CURSOR/OWN SHIP MARK], then press the
left button .
3. Select [EBL/VRM], then press the left button .
4. Select [EBL OFFSET BASE], then press the left button .
5. Rotate the scrollwheel to select [STAB GND], [STAB HDG] or [STAB NORTH]
as appropriate, then press the left button .
• [STAB GND]:
• [STAB HDG]:
• [STAB NORTH]:
Reference to latitude and longitude. Origin position is always
fixed regardless of your ship's movement.
Reference to heading. The relationship between origin posi-
tion and own position is kept always.
Reference to North. The origin position changes with North
position.