Sperry Marine Visionmaster FT ECDIS, Руководство пользователя

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ECDIS User Guide Electronic Range and Bearing Lines
65900012 9-5
After Drop origin only has been applied the following option becomes
available:
•
Carry Origin (C) - the ERBL origin is set at a fixed relative bearing
from own ship if the ERBL bearing is Relative (R). The ERBL origin
is set at a fixed true bearing if the ERBL bearing is True (T).
•
Carried Mode (Offset origin or carried origin) if the EBL is set to
True bearing (T), the EBL will maintain its true bearing offset. If the
EBL is set to Relative bearing (R) it will maintain a relative bearing
offset from ownship. In both cases, the origin will move at the same
velocity as ownship (i.e. carried). Switching the EBL bearing
between relative (R) and True (T) in carried mode will also change
the offset origin bearing between REL and True.
Switching the EBL bearing between relative (R) and true (T) in carried
mode will also change the offset origin bearing between REL and TRUE.
To change the origin of an ERBL do the following:
An ERBL centred on own ship’s CCRP may be
offset by right clicking on the EBL button and
selecting Offset Origin from the popup list.
Where Offset Origin is selected:
1. Cursor changes to bidirectional arrow. The EBL and its associated
VRM display the suffix (C) .
2. When an Offset is selected, the ERBL is immediately positioned
wherever the cursor position is on the video circle. Using the
trackball move the ERBL to the required offset location. When the
ERBL is offset the origin of the ERBL is indicated by a white dot.
3. Left click to fix position, the ERBL is now in Carry mode and moves
with own ship velocity. Or right click to cancel and return the ERBL
to the CCRP.
Where Drop Origin (D) or Drop EBL / VRM is selected:
1. A white dot is displayed at the origin of the ERBL and the EBL and
its associated VRM caption are shown with the suffix (D) . Unlike
Offset, the ERBL does not move when the cursor moves. When the
cursor is positioned over the ERBL origin it changes to a
bidirectional arrow.
2. To move the ERBL. Left click and hold on the origin. Use trackball
to move the ERBL to required location, release to drop it. The
ERBL remains stationary in the selected location. Only True
bearing is allowed with Drop Origin.