DeLorme Topo USA 8.0 Guide de l'utilisateur Page 128

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Topo USA 5.0 User Guide
120
Skyview
The Skyview diagram indicates visible satellites, their number (assigned by the Department
of Defense), and their position in the sky relative to your current position. Each satellite is
color coded, based on the quality of data it is transmitting.
GrayIndicates the satellite's position in the sky.
RedIndicates your GPS receiver is tracking the satellite, but it is not receiving data from it.
Yellow(DeLorme GPS receivers only) Indicates your receiver is tracking the satellite,
ephemeris data is available, but the satellite is not being used for navigation.
GreenIndicates your GPS receiver is tracking the satellite, ephemeris data is available, and
the satellite is being used for navigation.
Dark Green(WAAS-enabled receivers only) Indicates your receiver is tracking the
satellite, ephemeris data is available, the satellite is being used for navigation, and the
satellite has DGPS and WAAS corrections available.
Blue(WAAS-enabled receivers only) Indicates a WAAS satellite used for corrections.
Tracking Overview
To Start GPS Tracking
Use the following steps to track your movement along your route on your computer screen in Topo USA 5.0 as you
travel.
1. Click the GPS tab and then click Settings.
2. Click Start GPS. The GPS Status dialog area displays. For more information, see Monitoring Your GPS
Status on page 118.
One of the following tracking indicator arrows displays along your route on your computer screen. You
must be traveling at speeds of 3 mph or more for an arrow indicator to display.
If the signal is strong, your location displays as a green arrow (dark green for WAAS-enabled devices)
on the map as you move.
If you are receiving signals from three satellites (a 2-D fix), your location displays as a yellow arrow.
If your GPS device is not receiving data, the arrow is red. Reposition your receiver, ensuring a clear
pathway to the sky.
A trail of dots of the appropriate color (green or yellow) indicating the route traveled display
on the map.
Magellan receivers do not display any data until you are moving.
To Stop GPS Tracking
Use the following steps to stop GPS tracking.
1. On the GPS tab, click Settings.
2. Click Stop GPS to stop tracking your route on the screen.
Tracking Your Route Directions
When tracking in Topo USA 5.0, you can follow along a road route you have created. As you travel, Topo USA 5.0
highlights the current leg (segment) of your route.
The Turns option is only available during GPS tracking.
You can only track route directions for a road route.
To Track a Route
Use the following steps to track a route.
1. Initialize your GPS receiver and begin tracking.
Note: This is not necessary if you have selected the Auto Start GPS check box on the Settings dialog area
in the GPS tab.
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