To turn the magnetic-aiding feature on, use the following command.
$JATT,MAGAID,YES<CR><LF>
You may turn this feature back off with the following command.
$JATT,MAGAID,NO<CR><LF>
To query the Vector for the current status of this feature, issue the
following command.
$JATT,MAGAID<CR><LF>
8.4 $JATT,MAGCLR and MAGCAL
Metallic structures on the vessel affect a compass’ reading, so this effect
must be ‘removed’ through the calibration process. Once the Vector system
is installed in its final location(s), to use this feature, magnetic aiding must
first be turned on, followed by its calibration. A valid GPS heading is
mandatory for the calibration process. There are two different ways to
calibrate the magnetometer.
The first way is to send a command to clear the current magnetic
information to begin the initialization process. Then, if you leave the Vector
powered continuously, it will automatically save the magnetic calibration
tables when it is ready. This may take up to several days or even weeks
depending on the dynamics of your vessel. There is no further calibration
required. If you wish to check if the magnetic information has been saved,
you can issue the following command.
The second way to calibrate the magnetic sensor is to send a command to
clear the current magnetic information to begin the initialization process,
followed by slowly rotating the vessel a full 360° approximately three to four
times. Calibration should be performed in a clear environment without any
potential satellite blockages to minimize any possible errors during the
process. The command to initialize the magnetic calibration process follows.
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