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40 GPSMAP 192C Owner’s Manual
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• 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 192C 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.
WAAS Capability
The GPSMAP 192C is capable of receiving WAAS (Wide Area
Augmentation System) satellite signals. 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 can also benefit 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 Pacific
Ocean, in a geo-stationary orbit over the equator. Effective use
of the WAAS satellite signal may be limited by your geographic
location in relation to those satellites, now in developmental
service. WAAS satellite signal reception requires an absolute
clear view of the sky and works best when there are no nearby
obstructions such as buildings, mountains.