Operator Unit 130-626.NG002
Standard 22 GYRO COMPASS
1-12
1.4.2.2
Speed Error Correction
The heading of gyro compasses is affected by the speed of the vessel and the latitude
where the vessel is operating. These errors are corrected by Standard 22 automatically. It
is only required to input speed and latitude/position.
Figure 1-7
Speed Error Correction
For detailed information about the Speed Error Correction and the Speed Error Correction
table, see Manual of the Gyro Compass.
To enable or disable the Speed Error Correction, see chapter 2.9.7.
Speed and Latitude Input for Speed Error Correction
There are 3 ways for speed and position input with Standard 22 gyro compass systems.
Please consider the different ways especially for dual and triple Standard 22 gyro
compass systems.
1.
Manual input of speed and latitude
In this application speed and latitude are manually input via the Operator Unit of the
gyro compass. This data is transferred to all connected Standard 22 gyro compasses.
Thus, all Standard 22 gyro compasses calculate the speed error with the same data.
It is obligatory to input actual speed and latitude data in order to ensure a correct
speed error calculation.
Make sure that the correct north/South indication is input (available from software
version E00.03 / E01.01)
2.
Input via Distribution Unit (called “Automatic Speed Error Correction”)
In this application speed and latitude are input into the Distribution Unit. The
Distribution Unit distributes speed and latitude via CAN bus to the connected
Standard 22 or Standard 30 MF. In case of faulty data (e.g. speed or latitude jump)
the speed error correction of all connected Standard 22 or Standard 30 MF calculate
the speed error with wrong data, hence the heading information of all Standard 22 or
