Furuno FR-8111 - Manual (Page 29)

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1.15 Measuring Bearing
Measuring bearing by cursor
Rotate the trackball to set the cursor intersection
on the center of the target. The bearing to the cur-
sor intersection appears at the bottom of the dis-
play.
Measuring bearing by EBL
1) Press the EBL ON key to enable an EBL. Each
pressing of the key enables the No.1 EBL or
No.2 EBL alternately. The active marker’s
readout is circumscribed.
2) Operate the EBL control to bisect the target
with the EBL.
3) Check the EBL readout at the bottom left cor-
ner of the display.
50.0°R
80.0°R
No.1
EBL
No.2
EBL
Target
No.1 EBL bearing
No.2 EBL bearing
EBL
Figure 1-13 How to measure bearing by EBL
Note 1: You can display EBL bearing relative to
own ship (relative) or with reference to the north
(True). For further details see 1.38 Selecting Unit
of Range Measurement, Bearing Reference. Bear-
ing reference cannot be selected on the N-type
radar; it is fixed to relative bearing in the HU
mode, and true bearing in CU, NU and TM
modes.
Note 2: Suffix "T" denotes true bearing (for gy-
rocompass input) and suffix "M" denotes mag-
netic bearing (magnetic compass input).
Erasing EBLs
1) If two EBLs are displayed, press the EBL ON
key to circumscribe the VRM readout of the
VRM you want to keep active.
2) Press the EBL OFF key. The EBL readout and
its associated EBL are erased.
Measuring range by VRM
1) Press the VRM ON key to enable a VRM. Each
pressing of the key enables the No.1 VRM or
No.2 VRM alternately. The active marker’s
readout is circumscribed.
5.03nm
12.5nm No.1 VRM
No.2 VRM
VRM
Figure 1-11 Location of VRM readouts
2) Operate the VRM control to place the outside
edge of the VRM on the inside edge of the
target.
3) Check the VRM readout at the bottom right
corner of the display to find the range to the
target.
No.1 VRM
No.2 VRM
5.0nm
4.0nm No.1 VRM range
No.2 VRM range
Target
6.0NM
1.0
VRM
Figure 1-12 How to measure range by VRM
Erasing VRMs
1) If two VRMs are displayed, press the VRM
ON key to circumscribe the VRM readout of
the VRM you want to keep active.
2) Press the VRM OFF key. The VRM readout
and its associated VRM are erased.
Note: You can select unit of range measurement
for the cursor and VRM on the INITIAL menu.
For further details see 1.37 Selecting Unit of
Range Measurement, Bearing Reference. This
function is not available on the N-type radar; unit
of range measurement is fixed for nautical miles.