The progress of satellite acquisition is shown in three stages:
• No signal strength bars—the receiver is searching for
satellites.
• White signal strength bars—the receiver has found the
satellite and is collecting data.
• Green signal strength bars—the receiver has collected the
necessary data for this satellite.
Receiver Status
The receiver status eld displays one of the following conditions:
• Searching the Sky—the receiver is searching for satellites.
• AutoLocate—the receiver is searching for any satellite for
which an almanac was collected.
• Acquiring Satellites—the receiver is searching for, and
collecting data from, satellites visible at the last known or
initialized location, but has not acquired a x.
• 2D GPS Location—At least three satellites are acquired and
a two-dimensional position x is calculated. “2D Differential”
appears if you are receiving DGPS corrections in 2D mode,
and a “D” appears on the strength bar of satellites being
corrected.
• 3D GPS Location—At least four satellites are acquired and
a three-dimensional x was calculated. “3D Differential”
appears if you are receiving DGPS corrections in 3D mode,
and a “D” appears on the strength bar of satellites being
corrected.
• Lost Satellite Reception—the receiver is no longer tracking
enough satellites for a 2D or 3D x.
• Receiver Not Usable—the receiver is unusable, possibly due
to interference or abnormal satellite conditions. Restart the
unit to reset the receiver.
• Simulating GPS—the receiver is in Simulator Mode.
• GPS Off—the GPS receiver is turned off.
GPSMAP 580/585 Owner’s Manual 5
Getting Started
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