Great Plains DICKEY-john MVT Monitor Operator - Manual (Page 86)

OPERATOR’S MANUAL
IntelliAg MVT
11001-1643-201401
GROUND SPEED / 77
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.
1. Press the Speed Calibration button to access the Ground Speed
Calibration screen.
Figure 65
Ground Speed Calibration Screen
To Perform the Initial Ground Speed Calibration:
2. Carefully measure an exact 400 foot (100 meter) course, clearly
marking the start and finish points.
3. With the tractor moving between 2 and 5 MPH (3.2 and 8 Km/h), press
the Start button when the tractor is even with the designated start
point. The display showing the ground speed calibration will zero and
begin counting ground speed pulses.
4. When the tractor is even with the designated finish point, press the
Stop button. The new calibration number will display on screen center.
5. To ensure accuracy, record the number and repeat this process two
additional times. Average the three numbers recorded.
6. Enter the average calibration number.
7. Save the desired settings.