Kongsberg Simrad MF90, Installation Manual

Page: 271 / 426

476671/B
269
6 From the information provided by the personnel installing the motion sensor, obtain the
relevant rotation information. Insert the values.
Do this as accurately as possible.
7 At the bottom of the page, select
Apply
to save your settings.
8 Continue your work in the
Installation
dialog box, or select
OK
to close it.
Related topics
Setting to work, page 186
Inserting the installation parameters, page 259
Adjusting the built-in motion sensor offset, page 269
Adjusting the stabilization offsets for the external motion sensor, page 272
Adjusting the built-in motion sensor offset
The information from a motion reference unit (MRU) (normally heave, roll and pitch
information) is imported into the MF90 system to increase the accuracy of the echo data.
Correct values for motion sensor rotation are critical for the sonar performance. The MF90
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.
Prerequisites
Illustration MF90 :
A Forward (Bow)
B
This is the alignment angle (±180°)
C
Mechanical support brackets (Due to its
height and weight, the hull unit gantry
must be secured to the bulkhead by means
of mechanical support brackets.)
D
0° motion sensor reference
E Forward (Bow)
The MF90 system hardware units are installed
as specified in this manual.
• The MF90 system is turned on and operates
normally.
• The MF90 system is in Normal mode, but
TX Power
is set to Off to prevent transmissions.
• The vessel is berthed or at sea.
• Neither tools nor instruments are required.
Setting to work