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Your GPS 100 is now initialized and the GPS Status Page will be displayed
(see Section 11.1 for more information on the GPS Status Page). If you are
not operating your GPS 100 in the Simulator mode, it will immediately begin
acquiring satellites. This process is fully automatic and, under normal
circumstances, will take 2-3 minutes to obtain navigation information. The
GPS 100 will inform you when it is ready for navigation with the message
“READY FOR NAVIGATION".
Your GPS 100 will automatically update satellite orbital data as it operates.
If you have not operated your unit for a period of six months or longer, it will
search the sky to collect new orbital data. You will be informed when your
unit is searching the sky with the message “SEARCHING THE SKY”. Once
satellite orbital data is collected, it will be stored in battery backed up memory.
This means the data will not be lost when you turn your GPS 100 off.
If four or more satellites with good geometry are available, the GPS 100 will
automatically operate in the 3D mode in which latitude, longitude, and altitude
are computed. If only three satellites are available, the unit will automatically
operate in 2D mode in which only latitude and longitude are computed. When
operating in the 2D mode, the unit will ask you to enter an altitude with the
message “NEED ALT - PRESS NAV” (see Section 5.2 on altitude entry).
If the GPS 100 cannot acquire enough satellites for 2D or 3D navigation, you
will be informed with the message “POOR GPS COVERAGE”. If this
situation occurs, check the installation and make sure the antenna is properly
connected and not obstructed. You may wish to repeat the initialization steps
and verify that the initial data are correct.
Where to go from here...
If you are using your GPS 100 for the first time, we encourage you to review
Chapter 4 on waypoints, Chapter 5 on navigation, and Chapter 6 on GOTO.
Additionally, you may wish to go through Chapter 11 on custom setups.
Finally, you don’t want to miss our sample trip in Chapter 15 using the built-
in simulator! This will help you quickly master the power and capability of the
GPS 100.
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