TeeJet LH 1600M - Manual (Page 7)

LH 1600M O PERATORS MANUAL
LH A GRO 7
2. WHEEL CIRCUMFERENCE ENCODEMENT
Key Function
Pressing this key for approx. 2 seconds displays encodement 2, the
wheel circumference.
The up/down keys alter the value.
The wheel circumference is determined thus:
MANUAL SPEED SENSOR CALIBRATION
1. Mark the field and the wheel.
2. Drive minimum 10 revolutions with the wheel.
3. Mark the field.
4. Measure the distance between the 2 marks and divide this figure
by 10. The result is the effective wheel circumference.
5. Divide the effective wheel circumference by the number of
magnets.
AUTOMATIC SPEED SENSOR CALIBRATION
1. Measure a 100 metre stretch in the field
2. Drive to the start mark
3. Press the ”clear” key for 3 seconds under the encodement menu
for the speed sensor and the wheel circumference will be cleared.
Two horizontal lines appear on the display and the monitor is now
ready for automation speed sensor calibration.
4. Drive the 100-metre stretch, stopping at the stop mark. Note that
the monitor counts the number of pulses received from the speed
sensor.
5. Press the ”encode” key and the new wheel circumference is
calculated.
6. Press the ”encode” key once more to go to encodement 3.
7. The automatic speed sensor calibration procedure is now finished.
NOTE! ”ERR” will be displayed if the monitor has not received
enough pulses from the speed sensor.
Pressing this key deletes/resets the wheel circumference.