Garmin GPS 72 - Manual (Page 12)

10
Introduction
10
Reference
Satellite Location
The location of each available satellite is displayed over two location rings. 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 will become highlighted on the location rings. The unit can be set to display satel-
lite location with North, or your current track toward the top of the display.
Satellite Strength Indicator Bars
The Satellite Strength Indicator Bars show the strength of the signal being received, and
the status of the signal. The bars will be either shaded with a light grey, or fi lled with solid
black. If the bar is grey, it means that the GPS is receiving a signal from the satellite and is
in the process of storing orbital data provided in the GPS signal. When the bar turns solid
black, the GPS is using the satellite signal for navigation. A “D” in or above the bar means
that differential corrections are being applied to that satellite.
Date, Time and Current Location
The GPS gets date and time information from the satellites. The satellites are equipped
with an atomic clock that is very accurate. Since the GPS clock is derived from timing
information sent from the satellite, the GPS clock is also very accurate.
When the GPS receiver has achieved a 2D or 3D GPS Location, the current location will
be displayed in the selected Location Format. If you wish to see the current location in the
default (hddd° mm.mmm) format, press the ROCKER up or down to toggle between the
active and default format.
Satellite Sky View
GPS Information Page
190-00294-00_0B.indd 10 9/25/2002, 2:37:13 PM