Carlson Merlin LT, Руководство пользователя

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The XYZ distance to the Merlin LT unit from an existing IMU or CoG must be accurately measured and
recorded in the navigation software. When considering the location and orientation of the Merlin LT unit, it
is important to ensure that it is possible to accurately measure this lever arm.
4.1.1 Orientation of the Merlin LT
It is recommended that the Merlin LT is installed in the same orientation as the vessel centre line, as shown in
Figure 14. This simplifies the calibration process of Merlin LT. Care should be taken to align the base pate in an
orientation parallel to the vessel centre line from bow to stern.
Note:
The approximate heading value for the selected orientation will need to be applied in your navigation software.
Refer to the accompanying navigation software quick-start guides for details on how to calibrate Merlin LT within
QINSy, HYPACK, or PDS.
4.1.2 Securing the base plate
The base plate has four holes to allow the Merlin LT to be secured to the vessel.
The holes take M8 bolts. The use of Nyloc nuts is recommended for a stable, bolted installation.
Taking into account the criteria listed in the previous sections, position the base plate of the Merlin in the desired
location, with the Merlin parallel to the vessel’s centre line.
Mark out four M8-sized holes, using the base plate as a template. Drill the holes.
Use M8 bolts to secure the flange plate in position to a torque of 21 Nm.
When fixing the base plate in place, the Merlin LT must be secured absolutely rigid with respect to the vessel’s IMU.
If the platform to which the Merlin LT is mounted is flexible, vibrating, or not firm enough to take the weight of the
unit, data collected with the Merlin LT is liable to be erroneous and to be mismatched with respect to data from other
sensors onboard the vessel.
Vessel
centre line
Vessel
centre line
Merlin
pointing to
aft
Merlin
pointing
fore
Figure 14 Orientation of the Merlin LT on the vessel