CONTROL GP-MONITOR 1726588 - Caterpillar

Performing the Calibrations
Enter correct details. Any errors transfer directly into the finished as-built surface file. All measurements are in meters.
Phase Center
When a measurement refers to the phase center, the phase center is located 12.8 cm (5.0 inch) from the bottom of the receiver.
Illustration 29 g03790024
Measuring for the phase center (56)
( 1) 353-2794 Receiver
(56) Phase centerX and Y Measurements
The "X" measurement that is taken to the right of the centerline of the machine is a positive number.
The "X" measurement that is taken to the left of the centerline of the machine is a negative number.
The "Y" measurement that is taken in front of the front axle will be a positive number.
The "Y" measurement that is taken behind the front axle is a negative number.Calibrating Motor Graders
Illustration 30 g03473836
Illustration 31 g03473837Reference: Refer to the side view in Illustration 30 and the sample MCU screen shot Illustration 31 as a reference guide and template to record the machine receiver offsets and the machine dimensions.To calibrate a motor grader, complete these steps:
On the machine, measure the machine GPS receiver offsets.
GPS x - Measure the distance from the phase center (56) of the receiver (1) to the centerline of the machine.
GPS y - Measure the distance from the phase center (56) of the receiver (1) to the center of the rear axle of the machine.
GPS z - Measure the distance from the phase center (56) of the receiver (1) to the bottom of the wheels.
On the machine, measure the following machine dimensions:
Grader Blade Length - Measure