228
442700/A
Related topics
Maintenance procedures, page 186
Inserting the installation parameters, page 215
Inserting the installation parameters for the motion reference unit (MRU), page 221
MRU (Motion Reference Unit) page, page 575
Adjusting the stabilization offsets for the external motion
sensor
The CS90 system is provided with a built-in motion sensor to provide electronic stabilization
of the sonar beams. It is placed inside the Motor Control Unit. For improved operational
accuracy, an external motion reference unit (MRU) can be used. It is very important that the
motion sensor is set correctly with stabilization offset values that are adapted to the physical
installation angles of the hull unit. To align an external motion sensor to the internal sensor,
you may need to adjust the stabilization offset values. This task is only applicable is you are
using an external motion reference unit on your CS90 system.
Prerequisites
Note
Before you do this task you must adjust the installation offset of the motion sensor.
The CS90 system has been set up with its hardware units connected as specified in the
Installation Manual
.
• The external motion sensor is connected to the CS90 system.
• The CS90 system is turned on and operates normally.
• The vessel is berthed.
Note
We recommend that you do this task in calm sea without any vessel movements.
Context
It is very important that the motion sensor is set correctly with stabilization offset values
that are adapted to the physical installation angles of the hull unit. Even a small offset error
can give you very inccurate readings. In many cases a suitable motion sensor is already
installed. This sensor may be mounted anywhere on the vessel. Because of this, the risk of
stabilization offset misalignment is present.
The two screen captures below illustrate how the CS90 system can provide inaccurate data if
the stabilization offset is misaligned. In both examples, the tilt is set to approximately 24
Simrad CS90 Reference Manual
Summary of Contents for Simrad CS90
Page 1: ...kongsberg com simrad Simrad CS90 REFERENCE MANUAL ...
Page 2: ......
Page 627: ...442700 A 625 Related topics Concept descriptions page 622 Concept descriptions ...
Page 683: ......
Page 684: ... 2021 Kongsberg Maritime ISBN 978 82 8066 213 2 ...
Page 685: ......
Page 686: ...Reference Manual Simrad CS90 ...