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80 GPSMAP 176/176C Owner’s Manual
APPENDIX > SATELLITE INFORMATION
Satellite Information
Satellite Sky View
45°
90°
Outer ring -
the horizon
Inner ring- 45°
above the horizon
Center dot - 90°
above the horizon
Satellite Location
The location of each available satellite is displayed over two location
rings on the Satellite Information page. The outer ring represents
the horizon, the inner ring represents 45° above the horizon, and the
center represents directly overhead. When the unit is using a satellite
for navigation, the satellite number becomes highlighted on the
location rings. The unit can be set to display satellite location with
North or your current track at the top of the display.
Satellite Strength Indicator Bars
The Satellite Strength Indicator Bars not only show the strength of
the signal being received, they also show the status of the signal.
The bars are either shaded or filled. The gray bar means the GPS is
in the process of storing orbital data it is receiving from the satellite
signal. When the bar turns solid, the GPS is using the satellite signal
for navigation. A “D” in or above the bar means that differential
corrections (WAAS or DGPS) are being applied to that satellite.
Date, Time, and Current Location
The GPS gets date and time information from the satellite’s on-board
atomic clock. When the GPS receiver has achieved a 2D or 3D GPS
location, the current location is displayed in the selected location
format.