■ Advanced measurements
Using both Electronic Bearing Lines (EBL) and both
Variable Range Markers (VRM), the following ad-
vanced measurements can be made:
DMeasuring the distance and direction between two targets
3/4
MTUNE
TVECT
3M
1141NMNM
CURS\
SOG
km/h
H UP
3171
˚M
HDG
IR
ES
EBL1
EBL2
WPT
VRM1
VRM2
3211
˚M
0890
˚T
0852NM
0814NM
POSN
ALM
GYRO
GPS
EBL2
EBL1
VRM2
VRM1
q Push [p] [q] [t] [u] to move the cursor onto the
desired target.
w Push [EBL1 (VRM1)]/[ ] to display the
EBL1 and VRM1.
• Push [t] [u] to rotate the electronic bearing line.
• Push [p] [q] to increase or decrease the variable range
marker ring size.
e Push [EBL2 (VRM2)]/[ ] to display the
EBL2 and VRM2.
• The intersection of the EBL1 and VRM1 becomes the
center of the EBL2 and VRM2.
r Push [p] [q] [t] [u] to move the cursor onto the
other target.
• Push [t] [u] to rotate the electronic bearing line.
• Push [p] [q] to increase or decrease the variable
range marker ring size.
t The VRM2 readout shows the distance between
the two targets. The EBL2 readout shows the
direction from one target to the other.
DMeasuring the relative speed and course of a target
3/4
TVECT
6M
1141NMNM
CURS\
SOG
KT
H UP
3171
˚M
HDG
IR
ES
EBL1
EBL2
WPT
VRM1
VRM2
3211
˚T
1714
˚T
0401NM
0184NM
POSN
VRM2
EBL2
EBL1
VRM1
q Push [TRAILS]/[ ] (p. 11) to turn ON the
TRAILS function; then wait until the trail time count
up reaches to the TRAIL TIME.
w Set VRM1 and EBL1 to a previously plotted target
as described above.
e Set VRM2 and EBL2 to the current plotted position
of the same target, as described above.
r The VRM2 readout is a measure of target move-
ment which can be converted into relative target
speed.
• For example, when a 6 minute trail time is selected,
multiplying the distance by ten gives the relative aver-
age speed of the target.
• If your ship is stationary during the plotting time, the
converted speed and direction become absolute.
• The converted speed unit is knots or kilometers/hour
when the selected unit in the FUNCTION menu is nau-
tical miles (NM) or kilometers (KM), respectively.
t The EBL2 readout shows the course direction of
the target.
• Measuring the distance and course from a waypoint
q Display a waypoint. (See page 12)
w Set VRM1 and EBL1 to the displayed waypoint
targets as described above.
e Set VRM2 and EBL2 to a target (e.g. the next
waypoint) as described on page 14.
r The VRM2 readout shows the distance to the
target from the waypoint.
• The distance unit can be selected as nautical miles
(NM) or kilometers (KM) in the FUNCTION menu.
t The EBL2 readout shows the direction to the target
from the waypoint.
4
DISTANCE AND DIRECTION MEASUREMENTS
15
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