
Grade to the Design from the Seat
The 10.1-inch tablet shows the blade against the design with cut/fill figures in real time, so the operator sees what's left to cut or fill without waiting for a grade check.
3D Dozer Guidance System
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Enquire about the FJD Trion DC100L
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The FJD Trion DC100L is a 3D guidance system for bulldozers. GNSS antennas and tilt sensors feed a 10.1-inch cab tablet that shows the blade against your design in real time, with cut/fill figures. The operator controls the blade as usual, so there are no valves or hydraulic changes. Antennas can go on the cab roof (mastless) or on blade masts. FJD rates it at ±3 cm with RTK corrections and offers an upgrade path to its DC100 automatic blade control.
The DC100L puts the design in the cab of a dozer without taking the blade out of the operator’s hands. It suits bulk earthworks, pads, dams, farm work and road formation where you want fewer pegs and less checking, and want to start with guidance before deciding on automatic control.
It runs on the same platform as FJD’s DC100 automatic dozer control (sold as the H39 PRO until 2026), with the same tablet, software and workflow. The difference is that the DC100L shows the operator where the blade is and doesn’t drive the hydraulics.
In the mastless set-up, the two GNSS antennas go on the cab roof, with tilt sensors (IMUs) on the body and the blade. Nothing sits on the blade that can be knocked off, the operator’s view stays clear and the install is simpler. The traditional dual-mast layout, with antennas on masts at the blade, is still available. FJD quotes about 15 minutes to calibrate dual-mast and 25 minutes mastless.
The antennas give the dozer’s position and heading, and the IMUs give the blade’s attitude. The control box works out where the cutting edge is and the 10.1-inch tablet shows it against the design with cut/fill figures. The operator controls the blade. FJD’s dozer software also includes elevation offset, blade-wear calibration and hold-slope tools. Ask us which apply in guidance mode.
FJD designed the DC100L to upgrade to DC100 automatic blade control by adding a control module, with valve, relay and CAN bus options for hydraulic and electro-hydraulic dozers. We’re starting with guidance, so ask us if automatic control is on your radar.
Import DWG, DXF or XML designs, or build slopes, depths and elevations on the tablet. You can load several designs into one job and switch between them. More than 6,000 coordinate systems are built in, and grid and geoid models download online. FJD’s TerraMind cloud platform lets the office plan jobs, send designs and watch progress.
The tablet has a 4G modem for network RTK corrections (subscription, or Geoscience Australia’s free AUSCORS streams), and the system takes UHF corrections from your own base on 410–470 MHz or 902–928 MHz. The antennas need a clear view of the sky.
Send us the dozer make, model and year, whether it’s hydraulic or electro-hydraulic, whether you’d prefer mastless or dual-mast, and how you’ll get corrections. We can arrange installation, calibration and operator training.
FJD Dozer System: Installation and Calibration

The 10.1-inch tablet shows the blade against the design with cut/fill figures in real time, so the operator sees what's left to cut or fill without waiting for a grade check.

Mount both GNSS antennas on the cab roof, with tilt sensors on the body and blade, so nothing on the blade can be knocked off and the view stays clear. The traditional dual-mast layout is still available.

The DC100L uses the same tablet, software and workflow as FJD's DC100 automatic dozer control. FJD designed it to upgrade by adding a control module, with valve, relay and CAN bus options.

Import DWG, DXF or XML designs, or build slopes, depths and elevations on the tablet. You can load several designs into one job. More than 6,000 coordinate systems are built in.

The tablet is IP68, the control box and IMUs are IP67, and the cabling is rated to -40 °C. FJD provides remote diagnostics and over-the-air software updates.
| System Type | 3D guidance only: the operator controls the blade |
|---|---|
| Accuracy | ±3 cm (FJD rating, RTK corrections) |
| Antenna Mounting | Mastless (cab roof) or dual-mast |
| Calibration | About 15 min dual-mast, 25 min mastless (FJD figures) |
| Upgrade Path | DC100 automatic blade control (valve, relay or CAN bus module) |
| Corrections | Network RTK over 4G; UHF base 410–470 MHz or 902–928 MHz |
|---|---|
| Design Files | DWG, DXF, XML; on-tablet design; multiple designs per job |
| Coordinate Systems | 6,000+ built in; online grid and geoid download |
| Sensors | Two GNSS antennas (cab roof or blade masts); tilt sensors on the body and blade |
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