Page 29 of 40
CU-M001 User manual
Turn the vessel and repeat at the same speed.
Note: These values may be overwritten in some software upgrades or if master reset is performed.
We advise recording the values somewhere, just in case. Doppler systems typically have a calibration
factor within 10 % i.e. measured 9 kn, real 10 kn.
If the resulting factors look correct, click ‘Save’ to transfer the data into the calibration number on the
right. If you wish to perform a second calibration. move to the next calibration number and repeat.
During and after each leg a distance will be shown in 0.001NM resolution. This shows the measured
distance using the current calibrated values. This information can be used to measure the performance
of the system. The SOG (Brown) should be within 2% of the set distance on each leg. The STW
should be within 2% on the average of 2 legs (These percentages can only be meausred after at
least one succesful calibration
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