Hardware Installation Guide 85
10
Calibration and Tuning Notes
This Calibration and Tuning Notes chapter contains information for starting the Calibration and Tuning procedures in the
following sections.
• Transducer Calibration
• Starting the Calibration Procedure
Note: For optimal steering performance, the AutoSteer system must be fully calibrated before tuning.
1. For A5 AutoSteer systems we recommend using software versions V5.6.68 or latter because it offers improved perfor-
mance for the 12 volt valve and improved pressure transducer calibration. Contact your AutoFarm dealer for information
on software upgrades.
2. For closed center installations using A5 software V5.6.60 or earlier, we recommend changing the following two CPF
parameters to reduce possible wheel vibration while AutoSteering: Change parameter “D12_ACTIVE” from “2” to “0”.
Change parameter “D19_K” from “1” to “10”.
3. For all installations using FarmPro Phase 2 software or earlier versions, we recommend changing the following two CPF
parameters to reduce possible wheel vibration while AutoSteering: Change parameter “D12_ACTIVE” from “2” to “0”.
Change parameter “D19_K” from “1” to “10”.
Note: System CPF parameters should only be changed by AutoFarm technicians and AutoFarm dealers who have
received specific training for installing and servicing the AutoFarm product. Unauthorized changes to CPF parameters
may severely degrade the system performance and will void the product warranty. Changes to CPF parameters are
recorded in the system memory.
Transducer Calibration
The transducer calibration procedure for this installation is different to other AutoFarm installations because the transducer is
measuring a low pressure Load Sense pressure signal. In order to provide good manual kick-out response, you must calibrate
the pressure transducer HIGH number to be about 3000 counts above the LOW number.
For example, if the LOW count number is 15,000 then you should adjust the HIGH number to approximately 18,000. To
achieve this setting, gently turn the steering wheel in the second step of the transducer calibration procedure while looking at
the counts being displayed on the User Terminal. Confirm that the pressure transducer calibration is correct by testing the
manual kick-out feature while driving in AutoSteer mode. AutoSteer should disengage when you turn the steering wheel. If
spontaneous kick-out occurs while in AutoSteer mode, recalibrate the pressure transducer and increase the HIGH value
slightly. Repeat this procedure until you obtain good manual kick-out without spontaneous kick-out in AutoSteer mode.
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