7 - Menu 3 Calibration
7.2
Menu 3.1.1.1 Constant
The theoretical speed constant, pulses per unit (PPU), is the distance in
feet on the circumference of the wheel between holes (or protrusions /
magnets) that the speed sensor records.
Menu 3.1.1.2.1 Practical
Practical calibration of speed is done by driving a measured distance
and correcting the display so that the actual and the calculated
distances are the same. Calibration should take place in the field with a
half full tank and normal working tire pressure in order to obtain the
wheel’s real “working radius”.
Method:
1. Measure a distance not less than 200 feet.
2. Park the tractor at the start of the measured distance.
3. Press #. When zero distance [ 0 ft ] shows, drive the distance.
4. Press #.
5. Correct the distance shown on the display with the ¿ or ª to read the actual distance. Alternatively key in on the
numeric keys.
6. Press # to see the new calculated value.
7. Press # again to accept the value.
3.1.1.1 Sprayer speed
4 .00
PPU
Shows and permit change to the constant, Pulses Per Unit (metre
/ feet)
3.1.1.2.1
200
Measure up a distance more than 70 metres or 200 feet.
Then drive distance
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