Great Plains DICKEY-john AI100 10-inch Virtual Terminal - Manual (Page 27)

OPERATOR’S MANUAL
10" Virtual Terminal
11001-1440-200701
TRACTOR ECU / 25
GROUND SPEED CALIBRATION
The Ground Speed Calibration screen determines:
• Ground speed sensor type for calibration
• Ground speed constant
• Maximum and minimum ground speed alarm limits
IMPORTANT: All ground speed sensors (radar, wheel speed) MUST be
calibrated for accurate operations. Each sensor is
calibrated independently.
Ground speed is the rate of vehicle travel in MPH (Km/h) and is measured
by the ground speed sensor. The calibration value reflects the number of
pulses generated by the sensor while traveling a distance of 400 feet (100
meters).
Press the Ground Speed Calibration button to access the Ground Speed
Calibration screen.
Figure 19
Ground Speed Calibration Screen
To perform the initial ground speed calibration:
1. Press the Radar/Wheel Speed button for the desired radar or wheel
speed sensor. The Radar/Wheel Speed button only appears if both
were enabled on the I/O Configuration screen.
2. Carefully measure a 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 exactly even with the designated
start point. The display showing the ground speed pulses 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 the center of
the screen.
5. To ensure accuracy, record the number and repeat this process two
additional times. Average the three numbers recorded.
Current
Calibration
New Collected
Data
(last run value)
Icon displays
only if Wheel
and Radar
are configured
Ground Speed Calibration button
Start button
Stop button