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Selecting the Compass Mode
You can select the compass mode according to the condition of your ship’s gyro.
The S3 has s compass modes.
a. Internal Magnetic Mode
If your ship is not made of magnetic metal (ex: aluminum, FRP), you can use the
internal magnetic mode. However, the internal magnetic compass value will be
incorrect if ship is made of metal, because the internal magnetic compass will be
affected by the magnetic field of a metal-based ship.
NOTE
: We do not recommend use of the ‘Internal Magnetic Mode’ on metal ships.
b. Magnetic Fail Mode
Use this mode when an internal magnetic compass is not available. The S3
receives the internal magnetic compass value as a reference angle when satellite
selection or searching or researching after searching fail. And, the S3 uses the gyro
rate sensor value during searching and tracking.
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