TeeJet TASC-6500 - Manual (Page 28)

28 M-T 96162
999-1511 TASC 6200/6500
6.7 DISTANCE CALIBRATION
The ground speed sensor must be calibrated to ensure accurate application rates. This calibration should
be periodically checked, especially if the sensor has been moved or the tires have been changed.
6.7.1 INITIAL CALIBRATION SETTINGS
The following settings will be close. Use them for the initial settings so you get an initial reading of
distance during the calibration procedure.
NOTE: IT IS IMPORTANT TO FIELD CALIBRATE THE DISTANCE SENSOR TO INSURE OPTIMUM
ACCURACY.
RADAR - 1000 WHEEL SENSOR - 3500 SPEEDOMETER SENSOR - 3500
A. Use the following switch settings to enter the initial distance calibration number.
Power ON
Mode selector SET-UP
Display selector DISTANCE
B. The INC/DEC switch is used to set the initial number.
6.7.2 DISTANCE CALIBRATION PROCEDURE
A. Fill the main tank 1/2 full of water to approximate average load conditions.
B. Measure a known distance of 400 feet or more along a field or roadway. It should be in an
easy place to maneuver the vehicle. The longer the distance, the more accurate the test will be.
C. Drive to the starting point and STOP. Make sure all booms are OFF. Turn ON the TASC
power switch.
D. Turn the display selector to DISTANCE and put the mode selector in SET-UP. TASC will
display the current distance calibration number. Record this number for reference.
E. Put the mode selector switch to the OPERATE position and use the DEC switch to set the
accumulated distance reading to ZERO. (If the console shows a distance being accumulated
while the vehicle is stationary, the radar is vibrating. Change engine RPM or install dampening
material under the radar mounting bracket to stop the vibration.)
F. Drive the vehicle toward the other end of the measured distance. Use a speed of five to ten
miles per hour. Stop at the end marker.
G. TASC will display the accumulated distance. Compare the accumulated distance to the
measured distance, if they are the same, calibration is complete. If they are different, correct as
follows: