Garmin GPSMAP 182C - Manual (Page 46)

40 GPSMAP 182/182C Owner’s Manual
M
AIN
M
ENU
> GPS T
AB
GPS Tab
The GPS tab provides a visual reference of satellite acquisition,
receiver status, and accuracy. The status information provides
an idea of what the 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 appears for each satellite in view.
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 signal strength bars—the receiver has collected the
necessary data and the satellite(s) are ready for use.
Sky View
Signal Strength
Bars
Receiver
Status
Differential
Status
Accuracy
DOP
The status field indicates a 2D or 3D, when the GPSMAP
182/182C has collected the necessary data from satellites to
calculate a fix. The unit then updates the location, date, and time.
You can use the sky view to help determine if any satellites
are being blocked, and whether you have a current location fix
(indicated by a 2D, 2D Differential, 3D, or 3D Differential in
the status field). The sky view shows a bird’s-eye view of the
position of each satellite relative to the receiver’s last known
location. 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
configuration, causing the top of the sky view to align along your
current track heading.