Operating - ICM data entry Data entry procedure All numerical data is entered by the same procedure as detailed below: a/ Select the programme function to be checked or altered by pressing the appropriate button on the overlay card. The LH display will show the numerical value currently stored for that function. b/ If the value is correctly set then no further action is required. Simply select the next function to check or switch the ignition off to return to operating mode. c/ To set a new value use the top row of buttons as numerical entry keys . Key in the number, as the first key is pressed the number will flash in the LH display and the RH display will flash "ENT". As the full number is keyed in, it will all appear in the LH display. Each key press is acknowledged with an audible beep. d/ When the number is correctly set, press "Enter" to confirm the entry. The display will then stop flashing and the new data value is displayed in the LH window. If you enter your value incorrectly, simply press "Enter" at any time and then enter the value again. Data values Wheel calibration 1 & 2 The data value to be set on these functions is the distance the vehicle travels forwards over 2 intervals between speed sensor pulses. This data must be determined under practical operating conditions to allow for any wheel slip, sinkage or tyre deformation. The PHANTOM is fitted with a propshaft speed sensor and the data programmed is the distance the machine travels forwards for two revolutions of the prop shaft. Determine this distance by driving the machine forwards for exactly 20 revolutions of the prop shaft, measure the distance travelled and divide this distance by 10 to determine the true "speed sensor factor" or distance travelled between 2 sensor pulses. The following settings are the factory settings and are only approximate. The machine should be re-calibrated before use and the new settings recorded for future reference. Tyre size 38x20x16 low pressure 500/60-22.5, 600/50-22.5 12.4x16 Intermediate 9.5x24 Intermediate 7.2x36 Row crop 8.3x36 Row crop 9.5x36 Row crop 7.2x40 Row crop Metric factor (metres) 0.89 1.03 0.905 1.06 1.207 1.28 1.347 1.347 Imperial factor (inches) 35.1 40.5 35.63 41.76 47.53 50.43 53.04 53.04 An alternative method of calculating the wheel factor, although not as accurate, is as follows: Measure the distance from the ground to centre of the axle whilst in working conditions and approximately half loaded. Multiply this figure by 2.04 to get the wheel sensor factor. < 16 >