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If the Sailcomp display flashes "Er 1" alternately with normal compass information, this indicates that the sensor is magnetically overloaded. If this message is displayed when you are installing your Sailcomp 103AC, the compass cannot auto-compensate and must be moved to a location with less magnetic interference (e.g., with fewer metal, magnetic, or electric items). Moving the compass to such an area should allow it to auto-compensate and eliminate the "Er 1" message. If this message appears some time after your compass was installed and compensated, it is an indication that something has dramatically changed in the sensor's environment.

Check the area around the sensor for anything new that could disrupt the compass sensor. Such disruption can be caused by a magnetic field or large amounts of metal located near the sensor (e.g., speakers, tool boxes, anchors, or electric motors). Moving the item placed near the sensor should solve the problem.

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Check the power supply. The battery voltage may be incorrect or so low that even "Lo" or "bAt" cannot be displayed. Sailcomp requires 12v DC to operate properly.

There may be an electrical noise source too close to the sensor. Install an inline noise filter to eliminate the problem. KVH recommends the Radio Shack 270-051 or its equivalent.
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Check that the cable is connected to the junction box.

Check all cables and connectors to make sure that they are properly connected. You should also check the sockets or pins in the connector plugs or junction box receptacles because they may be dirty. If they are dirty, use a soft bristled brush and a contact cleaner (such as those you might find at Radio Shack, etc.). Take care not to use any hard object that could bend the connector pins.
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Check the power supply. The battery voltage may be incorrect or so low that even "Lo" or "bAt" cannot be displayed. Sailcomp requires 12v DC to operate correctly.

If the power levels are correct, check all cables and connectors to make sure that they are properly connected. You should also check the sockets or pins in the connector plugs or junction box receptacles because they may be dirty. If they are dirty, use a soft bristled brush and a contact cleaner (such as those you might find at Radio Shack, etc.). Take care not to use any hard object that could bend the connector pins.
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A PDF version of the Sailcomp brochure, which contains the technical specifications, is available on the Sailcomp product page.

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During the calibration process, the KVH GyroTrac, Azimuth, or Sailcomp compass will isolate the magnetic field of the host platform (the vessel) from the earth's magnetic field. As the vessel is turned in a large slow circle (less that 3 degrees per second), the interaction between the vessel's magnetic field and the earth's magnetic field is carefully measured. The characteristics of the vessel are determined, and a deviation table is created within the software. The compass will now account for the vessel's magnetic field when measuring the earth's magnetic field, ensuring more accurate heading information.
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A fluxgate compass sensor uses electronic means to measure angular position relative to lines of force of the earth's magnetic field. The fluxgate sensor consists of five main parts:

1. A permalloy core made of iron and nickel.

2. A liquid that keeps the permalloy afloat and also keeps the core material horizontal when the moving platform tilts.

3. At right angles to the core material, donut-shaped coils registering different voltages with respect to changing magnetic fields.

4. The Lexan housing enclosing the core material, liquid, and coils; and

5. A microprocessor calculating and converting the voltages into heading data.
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Six to nine months, depending on usage.
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Complete details regarding all KVH product warranties are available on our Warranty pages.
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KVH is pleased to offer world-class support and warranty coverage for all of its products. Complete details regarding all KVH product warranties are available on global support pages.

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