Kongsberg Simrad MF90, Installation Manual

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Inserting 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 echo presentations, this misalignment must be adjusted by changing the installation
parameters. Providing the correct value for this rotation is crucial for the sonar performance.
An inaccurate or incorrect value will cause the sonar echoes to be presented at the wrong
bearing.
Prerequisites
Illustration MF90 :
1 0° transducer mark
2 Forward (label)
3 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.)
4 Strengthening knee plates (stiffereners)
(The location of strengthening plates
(stiffeners) on the installation trunk is
indicated. Minimum four strengthening
plates must be used.)
5 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.
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.
Setting to work