Ag Leader Base Station Hardware Manual - Manual (Page 8)

6 AutoSteer System
Accurate Latitude and Longitude Positions
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The ST LED will continue to blink once per second until it has averaged 24 hours of position data. Note that if position
data drops below an acceptable range, the data will not be included in the average and the overall time will be increased
proportionally.
4. Once the Base Station has received and averaged the position data for 24 hours (36400 seconds) the location will be saved
within the Base Station's data base and the ST LED will stop blinking and be on solid. A solid ST LED indicates that the
Base Station is operating from a saved and validated location.
5. Work can now begin at this site with a latitude and longitude accuracy of +/- 10cm.
6. If power is lost or removed the Base Station will remember its last known position. When power is restored, during the first
60 second of position data, it will attempt to validate that it has not moved from that location. During which time it will
output its best known position. If it senses that it is at the same location (within 4 meters) it will validate that position and
the ST LED will stop blinking and turn on solid, and then it will output the stored position providing the user with +/-
10cm accuracy.
Procedure for Additional Surveys
Follow this procedure when at least one survey at a different location has been successfully completed, and you are setting up
a new job (at a new location) that requires accurate vehicle latitude and longitude.
1. Choose a location and mount the Base Station according to the guidelines in Repeatability on page 4 and Maximizing
Positioning Performance on page 7. Also, see the appropriate chapter for your Base Station configuration for detailed
hardware setup instructions. This location should be at least 35 feet from any saved/previously surveyed locations.
2. Follow steps 2-5 of Initial Survey Procedure on page 5.
Note: The Base Station has the capacity to store up to 16 separate locations. If it is moved to a 17th location, it will
delete the oldest stored location and add the new one when the survey is complete.
Procedure for Powering Up at a Surveyed Location
Follow this procedure when repeating or continuing a job (or if power is lost) at a saved/surveyed location.
1. If the Base Station has moved, place the Base Station in precisely the same location as the previously surveyed location.
See Repeatability on page 4 for information on correct Base Station positioning.
2. Power ON the Base Station.
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The Base Station will attempt to validate that it has not moved from its last known location. This could take approximately
5 minutes. During this time it will output its best known position. If it senses that it is at the same location (within 4 meters)
it will validate that position, and the ST LED will stop blinking and turn on solid. It will then output the stored position
with +/- 10cm accuracy.
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If the Base Station determines that it is not within 4 meters of its last known position, it will search the stored locations to
find a location within 4 meters of the current position. Upon finding the previously stored location the Base Station will
deselect the previous last known position and select, activate and validate the stored position. When a known position is
found and validated, the ST LED will stop blinking and turn on solid. It will then output the stored position providing the
user with +/- 10cm accuracy.
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If the Base Station is unable to find a known location, it will begin a new survey. When complete, the ST LED will stop
blinking and be on solid.
3. Work can now begin at this site with a latitude and longitude accuracy of +/- 10cm.