Garmin GPS 400 Pilot's Manual And Reference page 43

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 GPS 400
will indicate your position, track and ground speed on the other navigation pages.
The GPS receiver status field (see preceding page) will also display the following
messages under the appropriate conditions:
• Searching Sky— The GPS receiver is searching the sky for ANY visible satel-
lites. You will also be 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
continuously from the satellites) and last known position to
determine which satellites should be in view.
• 2D Navigation— The GPS receiver is in 2D navigation mode. Altitude data
will be provided by an altitude serializer.
• 3D Navigation— The GPS receiver is in 3D navigation mode and will compute
altitude using satellite data.
• Poor Coverg— The GPS receiver cannot acquire sufficient 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 five minutes to determine a position.
NAV PAGES
Satellite Status Page
1