Great Plains DICKEY-john Auto Section Control - Manual (Page 29)

OPERATOR’S MANUAL
Auto Section Control System
11001-1561B-201207
AUTO SECTION CONTROL SETUP / 27
When the Set Reference button is pressed, the Auto Section Control
terminal will indicate tractor position and mark a blue line on the screen
as a site of reference. It is important that the tractor be perpendicular
to the blue line to drive straight across the line.
6. Follow the onscreen instructions on the IntelliAg virtual terminal and
begin driving forward at the desired planting speed. Continue driving in
an oval until the reference line is crossed heading the same direction
that the reference line was set.
7. Redrive the same course in the same direction.
8. A beep should occur at the same spot the set reference point was set.
– If the beep occurs after the set reference point is crossed, increase
the GPS lag time on the GPS Calibration screen.
– If the beep occurs before the set reference point is crossed,
decrease the GPS lag time on the GPS Calibration screen.
– The Plus and Minus buttons adjust lag time by 0.1 seconds
entered on the GPS Calibration screen.
9. Continue to perform the test, at least three times, until the beep and
crossing the reference line occurs at the same time. If the reference
point needs adjustment, press the Cancel button to abort calibration.
IMPORTANT: Take adequate time and care for proper calibration of
GPS receiver. Run this test at least 3 times after proper
calibration has been determined to verify accurate GPS
lag value has been set.
10. When the beep occurs at the reference line, perform another complete
test (3 test runs) setting a new reference line to confirm that the GPS
lag value from the previous calibration test is correct.
11. Press OK button to accept the changes.
NOTE: GPS lag time range is 0 to 2.5
seconds.
Figure 27
GPS Lag Time Test
IMPORTANT GPS CALIBRATION NOTES
• Do not manually change the GPS lag after successful calibration is
completed in attempt to correct Run In or Run out section shutoff
points.
• If accuracy of the GPS lag value is in question, complete a full GPS
calibration as described for a new GPS lag value to be calculated.
in the opposite direction
SET REFERENCE LINE
Beep after
reference line
Increase Lag (+) time