OPERATOR’S MANUAL
IntelliAg MVT
11001-1643A-201411
96 / GROUND SPEED SETUP
SPEED CALIBRATION
NOTE:
Older DICKEY-john ground
speed calibrations had a default
value of 6096, which is the
nominal pulse count for the
radar speed sensor. ISO
ground speed calibration has a
default value of 12,192. To
convert older DICKEY-john
ground speed constants,
multiply the recorded value by
two for an approximate ISO
conversion.
Ground speed is the rate in MPH (Km/h) as measured by the ground speed
sensor. The number reflects the number of pulses generated by the ground
speed sensor while traveling a distance of 400 feet (100 meters).
IMPORTANT: It is imperative to get an accurate ground speed reading
as this reading directly impacts the accuracy of
population, area accumulation, and application rate
control.
Figure 77
Ground Speed Calibration Screen
To Perform the Initial Ground Speed Calibration:
1. Measure a 400 foot (100 meter) course marking start and finish points.
2. Press the Speed Cal button.
3. Drive tractor 2-5 mph and press the Start button at the start of the 400
foot course to begin calibration. The display showing the ground speed
calibration will zero and begin counting ground speed pulses.
4. Press Stop button at the end of the 400’ course. The new calibration
number displays on the center of the screen.
TIP: For better accuracy, run this course 3 times and average the 3
calibration numbers. Enter the averaged number at Ground Speed
Constant.
5. Enter the average calibration number.
6. Save the desired settings.
Nitro Software, Inc.
100 Portable Document Lane
Wonderland
Page 101