Position quality
The accuracy of the GPS position depends on available satellites, the
signal quality and the signal strength.
Signal strength indicator
The number of highlighted bars indicate the signal strength. The
more highlighted bars, the stronger signal.
The RAIM feature
RAIM (Receiver Autonomous Integrity Monitoring) is a fault-
detection feature required by IMO for type-approved GPS units. This
feature requires signal from at least five satellites to determine the
accuracy of the position.
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Note: The RAIM function is available only if the antenna is
supporting this feature.
The system alerts the operator that a condition may exist in the GPS
positioning solution that reduces the accuracy of the ship’s position.
The RAIM alert can be turned OFF and the error limits set. Refer to
"Software setup" on page 26.
RAIM status indicators
Icon Status Description
Safe
Any position error is within the specified
limit
Caution
No RAIM, the system is receiving signals
from less than five GPS satellites
Unsafe
The statistical position error exceeds the
specified limit.
Introduction | P2005/P3007 Operator Manual
11
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