Great Plains 2420P Operator Manual - Manual (Page 73)

2012-04-17 118-769M
71 Veris Drive Operating Instructions
Calibration - Speed
In order for the Controller to meter the proper amount of material, it must have an accurate field speed input. Speed
may be supplied by radar or by wheel pickup sensor. For the Controller to convert the pulses that it is receiving from
the speed input into accurate speed, it must be calibrated. To calibrate the Controller for speed, press the Function
key until the screen appears, as shown in Figure 1.
Figure 1. Speed calibration screen.
Figure 2. Press up to initiate new speed calibration routine; press down to restore factory default settings.
Set two flags 400’ apart (100 meters if in metric mode). Begin driving at a normal field speed; when the tractor pass-
es the first flag, press engage. See Figure 3 on the next page. The display will show the distance traveled as shown
in Figure 4.