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| Why does the heading coming from the SSC200 appear to be in error? |
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Article Details
Last Updated:
June 19, 2008
Article ID:
93
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The SSC200 measures the Earth's magnetic field and before it will provide an accurate heading, it must understand how the Earth's magnetic field is effected (or deviates from normal) due to the ferrous metals found on the vessel. Fortunately, the SSC200 compass can be deviated to account for the ferrous metals found on the boat (make sure the compass has been properly deviated to account for the permanently mounted ferrous metal objects). Unfortunately, the SSC200 compass can not cope with changing magnetic fields (i.e., a wire running next to the compass has a changing magnetic field when the circuit is turned on and off). Therefore, wires must be kept as far away as possible from the SSC200 (small wires carrying small currents less than 1 amp are best kept at least 18 inches away where wires with larger currents should be kept even farther away).
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