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CAT Trimble GCS900 MS980 AccuGrade GPS Grade Control System

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Caterpillar Trimble GCS900 AccuGrade GPS Grade Control System
MS980 Smart GPS Receivers (Same As Trimble MS980) w/ CD550A In-Cab Display (Same As Trimble SV170)

Please Note That This Is Not A Full Kit and The Following Accessories Are Not Included:

Light Bars
Remote Switches
Tilt Sensor
Power And Data Cables

Item ID: X1055
Condition: Refurbished
Warranty: 90 Day Exchange


* QTY. 2 Caterpillar Trimble MS980 Smart Receiver Heads/Antennas "Same As Trimble MS980" [ID- X1057 X1058]
* Caterpillar CD550A In-Cab Display "Same As Trimble SV170" [ID- X1055]
* Hard Carrying Case (G)


Caterpillar Accugrade GPS Grade Control System
The AccuGrade GPS Grade Control System is a high technology machine control and guidance system that allows dozer operators to grade with increased accuracy, without the need for survey stakes. Digital design data, in-cab operator guidance features and automatic blade controls help the operator achieve grade faster, meaning higher productivity, lower operating costs, and greater profitability.

AccuGrade GPS uses advanced Global Positioning System (GPS) technology to deliver precise blade positioning and control information to the cab. Using machine-mounted components, an offboard GPS base station, and Real Time Kinematic positioning, GPS provides the information necessary for the system to accurately determine blade positioning with centimeter level accuracy.

The AccuGrade system computes the positioning information on the machine, compares the position of the blade relative to the design plan, and delivers that information to the operator via an in-cab display. Information such as: blade elevation; how much cut/fill is necessary to achieve grade; visual indication of the blade’s position on the design surface; and a graphical view of the design plan with machine location.

AccuGrade GPS puts all the information the operator needs to complete the job in the cab, resulting in a greater level of control. Vertical and horizontal guidance tools – in-cab display and light bars – visually  guide the operator to desired grade. Automated features allow the hydraulic system to automatically control blade lift and tilt to move the blade to grade. The operator simply uses the guidance tools to steer the machine for consistent, accurate grades and slopes all day long resulting in higher productivity with less fatigue. 

The AccuGrade GPS system is integrated into the machine electronics and hydraulic systems for optimum blade response time and maximum grade control in all conditions. The system integrated cab and joysticks allow even inexperienced operators  to produce high quality results with minimal training.

AccuGrade GPS is designed for a wide range of construction earthwork applications, from bulk clearing with high production rates to finish grading with tight tolerances. 

Flat, single and dual sloping planar designs, such as building pads, parking lots, roads and highways, can be created on-board the machine using the AccuGrade GPS system. 

Features and Benefits:

  • Increases Productivity and Efficiency
    • Increases productivity by up to 50%
    • Reduces guesswork and costly rework by moving dirt right the first time
    • Reduces survey costs up to 90%
    • Increases material utilization
    • Reduces operating costs 
    • Extends the work day
  • Assists with Labor Shortage
    • Reduces labor requirements and costs
    • Customers can get the job done quicker
    • Reduces need for staking, string lines and grade checkers
    • Empowers operator to check grade from the cab
    • Reduces labor for staking as job progresses
  • Improves Employee Satisfaction and Retention
    • In-cab display brings the design to the cab
    • Provides more responsibility and job satisfaction
    • Empowers operator with real-time results 
    • Real time feedback on progress increases job satisfaction, eliminates guesswork and reduces operator stress
    • Improves operator skills and takes performance to the next level
    • Investing in the operator provides value and trust by investing in latest technology
  • Addresses Safety Concerns
    • Removes grade stakers and checkers from the worksite and away from the heavy equipment
    • Safety Interlock ensures blade is securely locked when system is inactive
  • Increases Equipment Versatility
    • Plug and play connections allow fast, easy conversion from laser grade control system, to GPS, to manual control
    • Provides consistency and accuracy, turning your production machine into a fine grading machine
  • Integrated into Cat Machines
    • Proven, optimized on-board electronics and hydraulics systems
    • Components designed into machine to maximize reliability
    • Integration into cab and joysticks increases ease of use
    • Safety interlock (park brake, system health, idle time) increases safety


CD550A Display
Display Screen: 140 mm (5.5 in) diagonal, QVGA (320 x 240) color adjustable light level active matrix LCD
16 color sunlight readable scratch-resistant low-glare glass
17 key backlit keypad with 6 softkeys
Compact flash memory drive, with heavy duty 64 MB card and compact flash memory card adapter
Managed power shutdown for file integrity
Meets Caterpillar EC1 specifications
Power Input: Input range from 9 to 32 volts, reverse voltage polarity, over voltage and load-dump protected
Power Consumption: <20 watts
Operating Temperature: -30°C to 62°C  (-22°F to 143°F)
Humidity: 95% Relative
Housing: Dustproof, waterproof, shock resistant, fully sealed to ± 5 psi
Operating System/Software: WindowsCE v2.12
Width: 180 mm (7.1 in)
Height: 228 mm (9 in)
Depth: 89 mm (3.5 in)
Weight: 2.72 kg (6 lb)


MS980 GPS Receiver
Operating Temperature: -40°C to 70°C (-40°F to 160°F)
Storage Temperature: -50°C to 85°C (-67°F to 185°F)
Input Voltage: 9 to 32 V DC
Maximum Amperage: 1.5 amp
Horizontal Accuracy: 20 mm (.78 in)
Vertical Accuracy: 30 mm (1.2 in)
Initialization: Automatic
Range: Up to 10 km (6.2 miles) from base station
Start-up: <2 min
3 LED status indicators
Upper LED: Power On
Middle LED: Radio Signal Received
Lower LED: GPS Signal Received
Control Interface: SAE J1939 CAN
Network Connector: 16-pin
Height: 147 mm (5.8 in)
Width: 232 mm (9.1 in)
Depth: 251 mm (9.9 in)
Weight: 3.8 kg (8.3 lb)


TC900C Radio
High speed data rates
Rugged, waterproof design
LED status indicators
Low power consumption
Power and data provided via a single cable
Spread spectrum technology
Range: up to 10 km (6.2 miles) line of sight under normal conditions
License-free in US and Canada
Operating Temperature: -40°C to 70°C (-40°F to 158°F)
Storage Temperature: -40°C to 70°C (-40°F to 158°F)
Humidity: 100% humidity-waterproof
Radio Antenna Tip: 0db
Width: 8.6 cm (3.4 in)
Height: 21.6 cm (8.5 in)
Length: 26 cm (10.3 in)
Weight: .9 kg (2 lb)