SWITCH GP-PRESSURE 1185501 - Caterpillar

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Each light bar will show different information for the position of the bucket:
A vertical light bar (top) provides corrections for the cut and the fill (13). This light bar displays information for the lowest bucket tip relative to the design.
The horizontal light bar (center) indicates the left and right corrections to the horizontal guidance line for the bucket tip that has focus (14) .
A vertical light bar (bottom) indicates in and out corrections to the horizontal guidance line from the bucket tip that has focus (15) .
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(13) A vertical light bar (top) provides corrections for the cut and the fill. (14) A horizontal light bar (center) indicates left and right corrections. (15) A vertical light bar (bottom) indicates the in and out correctionsSystem Sensors
Pitch Sensor
The AccuGrade System uses a single axis angle sensor in order to measure the pitch of the machine.
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Pitch SensorFront Linkage Sensors (Angle Sensors)
The AccuGrade System uses three single axis angle sensors that are located on the boom, the stick and the bucket linkage in order to calculate the position of the cutting edge of the bucket.
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Angle SensorsFront Linkage Sensors (Position Sensing Cylinder and Rotary Sensors)
The AccuGrade System uses two Rotary Position Sensors that are located on the boom and the stick in order to measure the relative rotation angle between the two linkages.The Position Sensing Cylinder (PSC) measures the rod extension/retraction of the hydraulic cylinder for the bucket. The PSC uses a sensor that is integrated into the cylinder in order to make this measurement.
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Rotary Position SensorGPS Receiver
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(27) GPS Receiver (28) Mast (29) Thumb Wheel On Quick Release BracketThe location sensors that are used by the AccuGrade System allow the system to determine the location of the location sensor in three dimensional space. Refer to the following list for the type of location sensor that is used by the AccuGrade System:
MS990C ReceiverBoth Receivers are able to calculate their location by using information that is broadcast from GPS satellites that are orbiting the earth and correction signals that are sent from a base station. The MS990C receivers will also use information that is broadcast from GNSS satellites if a GNSS base station is used.Other Components
In addition to the Display, Light Bars and Sensors, you may also find the following equipment connected to the system harness and configured into the system:Data Radio
TCxxx Radios
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A data radio is used to receive data from a GPS reference station,