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2021-06-24
CU-M001 User manual
2. The DL2 will measure this Installation angle over a longer time period and suggest the value to
enter. Each time a sea test is performed a installation angle will be shown on the right (in green).
Pressing the recomended button will enter the recomended value into the installation angle setting,
alternatively the value can be adjusted manually.
The user can select the SOG or STW value by touching that area on the left, the sea test angles
shown will then correspond to that parameter.
The angle for STW is most accurate after a sea test of 2 legs, The SOG value should be accurate
at all times when compared to GPS values.
Experience has shown that fine adjustment of this parameter has a significant effect on the accuracy
of the transversal speed at low speeds.
Fine adjust Installation angle in software
Installation angle offset in the software is recommended to fine adjust the angle /-10deg.
Allthough the installation error in the software may be set to +/-180deg.
The software will present “live” (NOW) speed and angle of STW and SOG. Any deviation between
the two measurements will, in most cases, be caused by current in the water.
Installation angle calibration procedure
There are two ways to calibrate the installation angle:
1. When the vessel is in steady speed and steady heading in calm waters look at the live “NOW”
measurement of STW angle. Set installation angle to same value with oposite value(i.e.
measure 2.2, insert -2.2) with the usage og up/down keys. Wait 30 seconds to see effect on
“NOW” mesument angle.
2. On Large vessels the water may be dragged at an angle to the ship. This can be seperately
adjusted by uncoupling the two parameters for STW and SOG, and then adjusting the two
parameters until the Angle is near zero
Installation angle setting
