JRC JMA-5312-6 Instruction Manual page 237

Operation if Individual is selected
A line perpendicular to the own ship and the intersection marker "----○" are displayed on an
operable line.
Turning the [EBL] dial changes the direction.
Pressing the [VRM] dial changes the range, end point 1, or end point 2 to be operated.
An operable point is displayed with "
If Sequential
be displayed by pressing the [EBL] dial.
To close the menu, press [0] key.
Operation if Equiangular is selected
Select a group of lines to be operated according to the setting of [3] Control.
Pressing the [EBL] dial switches between the direction change mode and elevation-angle
change mode. Turning the [EBL] dial changes the direction or elevation angle.
[3] Control
Determines whether to operate all the lines at the same time. The setting items are determined by
the setting of [2] Operation Mode.
If All is selected
The setting cannot be changed.
All
If Individual is selected
Determine whether to set consecutive lines or individual lines.
Sequential
Index Line1 to Line8
If Track or Equiangular is selected
Select a group of lines to be operated.
Group1
[4] Floating
Moves the center point of parallel index lines.
Off
Screen Fix
L/L Fix
[5] Heading Link
Determines whether to operate parallel index lines following the heading bearing.
On
Off
" and can be operated by turning the [VRM] dial.
is selected for [3] Control, the parallel index lines of the next number can
: All the lines are operated at the same time.
: Lines are operated sequentially.
: A specified line is operated.
to Group4 : A specified group is operated.
: The starting point of parallel index lines is defined as the own ship's
position.
: The center of parallel index lines is moved and fixed on the radar
display.
: The center of parallel index lines is moved and fixed at the latitude
and :longitude. (The navigator needs to be connected.)
: Parallel index lines are operated following the heading bearing.
: Parallel index lines are not operated following the heading bearing.
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4.1 Use of Navigation Tools
4