Garmin 530 用户指南
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2 - NAV PAGES
Each satellite has a 30-second data transmission that must be collected (hollow signal strength bar) before
the satellite may be used for navigation (solid signal strength bar). Once the GPS receiver has determined
your position, the GNS 530 indicates your position, altitude, track and ground speed. The GPS receiver status
fi eld (see page 41) also displays the following messages under the appropriate con ditions:
your position, the GNS 530 indicates your position, altitude, track and ground speed. The GPS receiver status
fi eld (see page 41) also displays the following messages under the appropriate con ditions:
• Searching Sky — The GPS receiver is searching the sky for ANY visible satellites. You are also informed
of this status with a “Searching the Sky” message.
• Acquiring Sat — The GPS receiver is acquiring satellites for navigation. In this mode, the receiver uses
satellite orbital data (collected con tinuously from the satellites) and last known posi-
tion to determine the satellites that should be in view.
tion to determine the satellites that should be in view.
• 2D Navigation — The GPS receiver is in 2D navigation mode. Altitude data is provided by an altitude
serializer (if installed).
• 3D Navigation — The GPS receiver is in 3D navigation mode and computes altitude using satellite
data.
• Poor Coverg —
The GPS receiver cannot acquire suffi cient satellites for navigation.
• Rcvr Not Usbl — The GPS receiver is unusable due to incorrect initialization or abnormal satellite
conditions. Turn the unit off and on again.
• AutoLocate —
The GPS receiver is looking for any available satellite. This process can take up to
fi ve minutes to determine a position.
fi ve minutes to determine a position.
The Satellite Status Page also indicates the accuracy of the position fi x, using Estimated Position Error
(EPE) and Dilution of Precision (DOP) fi gures. DOP measures satellite geometry quality (i.e., number of
satellites received and where they are relative to each other) on a scale from one to ten. The lowest numbers
are the best accuracy and the highest numbers are the worst. EPE uses DOP and other factors to calculate a
horizontal position error, in feet or meters.
satellites received and where they are relative to each other) on a scale from one to ten. The lowest numbers
are the best accuracy and the highest numbers are the worst. EPE uses DOP and other factors to calculate a
horizontal position error, in feet or meters.
“Searching Sky” appears when the GNS 530 is
searching for any available satellite to collect
orbital (almanac) data.
searching for any available satellite to collect
orbital (almanac) data.
Satellite Status Page
“AutoLocate” appears when the GNS 530 has
orbital data, but last known position and/or time
in for ma tion are signifi cantly different from current
conditions.
orbital data, but last known position and/or time
in for ma tion are signifi cantly different from current
conditions.
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