Advanced Measurement - Icom MR-570R Operating Manual

5
DISTANCE AND DIRECTION MEASUREMENTS
Advanced measurements
Using both Electronic Bearing Lines (EBL) and both Variable Range Markers (VRM), the following advanced mea-
surements can be made:
• Measuring the distance and direction between 2
targets
3
NM
(1)
EBL1
VRM2
EBL2
EBL/VRM1
EBL/VRM2
• Measuring the relative speed and course of a
target
3
NM
(1)
EBL1
VRM2
VRM1
EBL2
EBL/VRM1
EBL/VRM2
18
2530˚
T
O:01
S0672˚ 1.296NM
R
S0162˚ 0.566NM O:01
R
2530˚
T
S0672˚ 1.296NM O:01
R
S0162˚ 0.566NM O:01
R
q Push
]/
on the desired target.
w Push [EBL1 (VRM1)] to display the EBL1 and
VRM1.
e Push
]/
on the next target.
r Push [EBL2 (VRM2)] to display the EBL2 and
VRM2.
t Push [EBL2 (VRM2)] once more to display the
EBL2 and VRM2.
• The intersection of the EBL1 and VRM1 becomes the
VRM1
center of the EBL2 and VRM2.
y The VRM2 readout shows the distance between the
two targets. The EBL2 readout shows the direction
from one target to the other.
q Push [TRAILS] (p. 12) ON; 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 as above.
r The VRM2 readout is a measurement of target
movement which can be converted into relative tar-
get speed.
• For example, when a 6 min. trail time is selected, multi-
plying the distance by ten gives the relative average
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 kilometres/hour
when the selected unit in the "FUNCTION" menu is
nautical miles (NM) or kilometres (KM), respectively.
t The EBL2 readout shows the course direction of
the target.
to move the cross line cursor
]/ ] ]
to move the cross line cursor
]/ ] ]