409977/B
51
Verifying the installation parameters for the
transducer
When the installation trunk is mounted, it may not be positioned with the mounting holes
perfectly aligned to the centre line of the vessel. When the hull unit is placed on the
trunk, the "forward" mark on the transducer shaft sleeve - and thus also "forward" on
the transducer - may not point forward at all, but several degrees off the centre line. To
obtain accurate SU90 presentations, this misalignment must be adjusted by changing the
installation parameters.
Prerequisites
For accurate location of the
transducer, you need the detailed
vessel drawings. You also need the
alignment angle that was recorded
when the hull unit was installed.
Neither tools nor instruments are
required. The SU90 system is turned
on and operates normally.
Illustration:
A
Bow
B
This is the alignment angle.
C
0
°
transducer mark
Context
Independent of the hull unit
orientation, the alignment is always
defined as:
The angle measured clockwise from
the bow to the 0 degrees transducer mark.
The 0° transducer mark is located outermost on the mounting flange, and it is marked as
a red "0". Depending on the transducer mounting, it can be located at any angle on the
mounting flange, not necessarily as shown in the illustration.
Procedure
1
Open the
Setup
menu.
2
On the
Setup
menu, select
Installation
.
Observe that the
Installation
dialog box opens. This dialog box contains a number
of pages selected from the menu on the left side.
Summary of Contents for SU90
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