2D system measurements 9
9. If you have more than one reading:
Make sure that the calculated calibration angles are within 0.4° of each
other.
Once you have taken three readings, if any fall outside the 0.4° tolerance,
re-measure the height difference before you move the machine.
If a reading is unacceptable, remove it from the list.
10.
When all the calibration readings are satisfactory, press \.
Bucket sensor calibration
The bucket sensor calibration and measurements depend on the :
l arm sensor type (AS300/AS45x or Caterpillar PSC), defined in the Machine
Settings - Arm Sensor Type dialog
l bucket sensor location (Bucket/Quick Coupler or Idler Arm/Dogbone), defined
in the Machine Settings - Arm Sensor Type dialog.
Note – There is no bucket sensor calibration for machines with the sensor mounted
on the bucket/ quick coupler. The bucket sensor on bucket/ quick coupler is
calibrated at the same time a bucket is created. See 9.12 Create bucket.
Follow the Bucket Sensor Calibration wizard to enter your machine measurements
into the system.
Note – The stick sensor must be properly calibrated before performing the bucket
sensor calibration.
Tilt bucket sensor calibration
Define the bucket model first, and then calibrate the bucket sensor. For more
information, see 9.12 Create bucket.
Measuring the height differences
Use a total station, a laser level, or a water level to take these measurements.
When measuring the height difference between the pin points:
l Rest the bucket on the ground. This minimizes the possibility of the boom,
stick, or bucket sagging or drifting during the calibration.
l Keep the machine as level as possible.
Note – Do not move the bucket between taking these measurements. The length F-
G and the height offset should be measured at the same time.
GCS900 Grade Control System for Excavators Installation Manual 119
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