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Basic control principlesCalibrating DGPSCalibrating GPS signal
 
 
Calibrating GPS signal
 
When calibrating the GPS signal, the GPS receiver must be in the exact same position as that when setting the Reference point.
 
 
 Position des Traktors beim Kalibrieren
Position of the GPS receiver in relation to the reference point when calibrating the GPS signal
Position of the reference point
GPS receiver on the roof of the tractor cab
 
 
 
When should you calibrate?
 
 
 
You will need to calibrate the GPS signal in the following instances:
▪
Each time before starting work
▪
When you find that a deviation is shown on the screen even when driving down a swath.
 
 
▪
When a red triangle is flashing beside the  FS_GPS-Signal muss kalibriert werden function icon
 GPS-Signal kalibrieren
 
 
 
Procedure
 
 
 
1.
Drive to the reference point at the entrance to the field.
2.
Position the tractor with both of its front wheels on the line.
The tractor must be positioned at the same angle as when the reference point was set. The distance from the fixed permanent point on the roadside must be the same as when the reference point was set.
3.
 FS_Weitere Funktionssymbole anzeigen - Press.
4.
 FS_Antenne grau - Press.
5.
 FS_referenzpunkt setzen - Press.
⇨
The program will need 15 seconds to determine the current position. Re-calibrating the reference point overwrites the old calibration.
⇨
The following screen appears:
 
6.
 FS_Zurück - Back
The GPS calibration screen now displays the following parameters:
▪
Drift
 
Displays the reference point drift since the reference point was set. All field data will be shifted by this value. The drift is re-calculated when the GPS signal is calibrated.
▪
Age
 
How many hours have passed since the GPS signal was last calibrated. Hundredths of a hour are displayed behind the decimal point. For example: 0.25 h = one quarter of an hour = 15 minutes