Kongsberg Simrad SN90, Installation Manual

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3 On the left side of the
Installation
dialog box, click the small white triangle next to
Installation Parameters
.
Observe that a menu opens with access to all the individual sub-pages.
4 On the left side of the
Installation
dialog box, click
GPS
to open the page.
5 From the vessel drawings, extract the relevant offset information, and insert those
values.
Do this as accurately as possible.
6 Click
OK
to save the chosen settings and close the dialog box.
Related topics
Transducer installation principles, page 67
Determining the location and installation angles of the transducer, page 88
Vessel coordinate system, page 61
Installation remarks, page 216
Defining the location and installation angles of the transducer
The physical location and the installation angles of the SN90 transducer are critical for
the SN90 operation. Incorrect installation angles will greatly reduce the data accuracy
of the SN90.
Prerequisites
For accurate location of the transducer, you need the detailed vessel drawings. You also
need the installation angles that were recorded when the transducer was installed.
Context
The physical location of the transducer is important for the SN90 data accuracy.
Use the centre of the transducer face as reference, and define the offset values related to
the
Ship Origo . The installation angles relevant for the transducer must also be defined.
These values were recorded during the transducer installation, and they define the
direction of the transducer face.
Note
It is very important that the transducer installation angles are measured and recorded
accurately during the installation, and that they are defined accurately in the SN90
software. Incorrect angles will greatly reduce the data accuracy of the SN90.
In order to visualize the process of finding the installation angles, observe these three
examples.
Setting to work