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Simrad SN90 Reference Manual
• If the 0° reference mark for the built-in motion sensor points to the starboard (right)
side of the vessel's centre line (as shown in the illustration), insert the offset as a
number between 0 and +180 degrees.
• If the 0° reference mark points to the port (left) side of the vessel's centre line, insert
the offset as a number between 0 and –180 degrees.
Illustration:
Rotation around the
A
x-axis: In the positive
horizontal direction
(forward), a positive
rotation is clockwise.
Rotation around the
B
y-axis: In the positive
horizontal direction
(starboard), a positive
rotation is clockwise.
Rotation around the z-axis: In the positive vertical direction (down), a positive
C
rotation is clockwise.
Reference point (Ship Origin)
D
Procedure
1
Estimate the alignment angle from the bow (vessel's centre line) to the 0° reference
mark for the built-in motion sensor.
Do this as accurately as possible.
2
On the
menu, select
Setup
Observe that the
of pages selected from the menu on the left side.
3
On the left side of the
Installation Parameters
Observe that a menu opens with access to all the individual pages.
4
Select
to open the page.
MRU
5
Insert the alignment offset angle as a rotation around Z.
• If the 0° reference mark for the built-in motion sensor points to the starboard
(right) side of the vessel's centre line (as shown in the illustration), insert the
offset as a number between 0 and +180 degrees.
• If the 0° reference mark points to the port (left) side of the vessel's centre line,
insert the offset as a number between 0 and –180 degrees.
6
At the bottom of the page, select
226
Installation
dialog box opens. This dialog box contains a number
Installation
dialog box, select the small white triangle next to
Installation
.
Apply
.
to save your settings.
381294/E
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