Furuno MFD8 User Handbook Manual page 13

Measuring bearing to a target
Select
Push*
EBL.
*Short: EBL1
Long: EBL1/EBL2
Setting a guard zone
A guard zone alerts you with audio and visual indications when a target enters the alarm zone.
On radar
screen
To cancel a guard zone:
Place cursor
on guard zone.
Select
Confirm appropriate
selection.
selection.
EBL.
Guard Zone
Select
Set Guard 1 or
Set Guard 2.
Place cursor at
point 2.
Bisect
Confirm
target with
EBL.
153
Point 1
Point 2
Select
Clear Guard.
13
153
EBL2
+
EBL1
Target
Check EBL box for bearing.
EBL 1 210.2 ° T
EBL 2 59.4 ° T
EBL box
Place cursor at
point 1.
Point 2
OR
Point 1
Erase
guard zone.