NRI Grazing Land On-Site Data Collection
(03/23/20011) B-26
What takes place during initialization?
The Map76 comes from the factory in Taiwan with the GPS almanac (satellite orbital
information) set for Olathe, Kansas.
The almanac information is out of date and therefore incorrect.
When should you initialize?
When the receiver is first used.
When the receiver is moved more than several hundred miles before next use.
When the receiver is stored for more than 7 days or longer between uses.
How long does it take to initialize?
Should take no more than 5 minutes in the most extreme cases. How long will
entirely depend on how far the receiver‟s been moved, how long it‟s been stored, and
how much open sky is available to the user.
An options menu will be displayed if the Map76 is unable to determine its location.
Select an option (depending on the situation) to help the unit acquire satellites.
The most efficient option is “New Location”.
ROCKER to “New Location” then press ENTER.
The GPS Information Page
Displays speed, elevation, accuracy, receiver status, satellite status, date, time, and
location.
When the receiver receives 3 satellite signals it will report accuracy (estimated) and
speed. When it‟s receiving 4 satellites it will report elevation.
The Map76 displays several types of receiver status messages:
1.
2D location
– computing horizontal position based on 3 satellites.
2.
3D location
– computing horizontal and vertical position based on 4 or more
satellites.
3.
2D/3D differential location
– computing positions using WAAS or other
differential corrections.
4.
Simulating GPS
– the receiver is running in simulator mode and is not receiving
GPS signals. Do not attempt navigation while in this mode.
