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JLR-7700 MK2 GPS Navigator
Starting point
001
Destination
002
003
Next course
Current course
1.00 nm
1.00 nm
The alarm goes off
4.5.4.4 Setting the Boundary Alarm Range
An alarm can be activated when the vessel has crossed the borderline for the planned course.
The boundary alarm informs the steersman that the vessel has entered the preset area along a given course,
which is defined with two given points.
The alarm can also be activated when the vessel has crossed a borderline (planned course), such as 200 nm
from the coastal line or fishery agreement line, or so on.
Example) In case it is necessary to activate the alarm when the vessel has crossed the borderline for the
planned course, which has been set 1.00 nm away from it. (See the figure below.)
・ Press the key provided on the right hand side of the BAUNDARY, and then the 1 , 0 , 0 , and
ENT keys.
In case the vessel is navigating from the destination 001 to 002 based on the route plan set
to the destination 001 to 003. (See the figure shown below.)
Memo
・ Pressing the CLR key will turn off the alarm sound, however, the alarm display will remain turned on
unless the vessel has returned back into the preset alarm range or a new alarm range is entered.
・ No alarm goes off when the alarm range is set to zero nm.
・ The off-course alarm and boundary alarm function can not be set simultaneously since they contradict
each other. Setting one alarm will automatically cancel the other.
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