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Reference
GPS Info Tab—
provides a visual reference of satellite acquisition, GPS receiver status, and accuracy.
When the unit is powered up, a GPS Info window will appear after the Warning screen. This window will
automatically disappear when the unit is ready to navigate. The status information will give you an idea of
what the GPS receiver is doing at any given moment. The sky view and signal strength bars give you an
indication of what satellites are visible to the receiver and whether or not they are being tracked. The signal
strength is shown on a bar graph for each satellite, with the satellite number below. As the receiver locks
onto satellites, a signal strength bar will appear for each satellite in view, with the appropriate satellite
number underneath each bar. The progress of satellite acquisition is shown in three stages:
• No signal strength bars— the receiver is looking for the satellites indicated.
• Light signal strength bars— the receiver has found the satellite(s) and is collecting data.
• Dark (or green) signal strength bars— the receiver has collected the necessary data and the
satellite(s) are ready for use.
As soon as the GPS receiver has collected the necessary data from the best satellites in view to calculate
a fi x, the GPSMAP 2006/2010 status fi eld will indicate a 2D or 3D status. The unit will then update
the position, date and time.
You can use the sky view to help determine if any satellites are being blocked, and whether you have
a current position fi x (indicated by a ‘2D’,‘2D Differential’,‘3D’, or ‘3D Differential’ in the status fi eld). The
sky view shows a bird’s-eye view of the position of each satellite relative to the GPS antenna’s last known
position. The outer circle represents the horizon (north up), the inner circle 45º above the horizon, and
the center point a position directly overhead. You can also set the sky view to a ‘Track Up’ confi guration,
causing the top of the sky view to align along your current track heading.
WAAS Capability
The GPSMAP 2006/2010 is capable of receiving WAAS (Wide Area Augmentation System) satellite
signal input. WAAS is an FAA (Federal Aviation Administration) funded project to improve the overall
accuracy and integrity of the GPS signal for aviation use, but land/sea based users may also benefi t from
this system. At this time, the system is still in the development stage and is not fully operational. There are
currently two WAAS satellites that can be received in the U.S.A., one over the Atlantic Ocean and one
over the Pacifi c Ocean, in a geo-stationary orbit over the equator. Effective use of the WAAS satellite signal
45°
90°
Outer ring -
the horizon
Inner ring- 45°
above the horizon
Center dot - 90°
above the horizon
Main Menu: GPS Info Tab
Accuracy
Receiver Status
DGPS Status
Signal Strength
Bars
Sky View
DOP
