MCNAV TX73 is CHCNAV’s next-generation 3D guidance system for excavators. It fuses a high-precision GNSS receiver with rugged IMU sensors to compute real-time bucket-tip coordinates against project design models, helping operators dig directly to target surfaces with fewer stakes, less rework, and higher productivity. The MCPad300 10.1″ display delivers high-fidelity 3D visualization, quick 2D/3D view switching, and operator-friendly calibration wizards. Remote access, data sync, and online updates are supported via CHCNAV’s iSite cloud, while industrial-grade components (MC300 receiver, IS300 IMU, AT315 antenna) provide job-site durability.
System-level specs (TX73 excavator guidance system)
| Item |
Spec |
| System type |
3D excavator guidance system |
| Guidance / views |
2D & 3D views; high-fidelity CAD visualization; large-font/top/side modes |
| UI & workflow |
Customizable shortcuts; layer-based control; real-time progress (color-coded maps) |
| Connectivity |
iSite cloud for remote access, troubleshooting, data sync & online updates |
| Radio protocol compatibility |
TT450S, Transparent, Satel_3AS |
| Design file support |
LandXML, DWG, DXF; coordinate system files: *.dc, *.cal, *.jxl, *.lok, *.loc |
| Typical kit components |
MCPad300 display, MC300 GNSS receiver, IS300 IMU sensor, AT315 GNSS antenna |
| GNSS RTK positioning (receiver) |
Horizontal: 8 mm + 1 ppm RMS; Vertical: 15 mm + 1 ppm RMS |
| IMU attitude accuracy |
Static ±0.05° RMS; Dynamic ±0.1° RMS |
| Ruggedness (ingress) |
Display: IP67; Receiver: IP67; IMU: IP69K; Antenna: IP68 |
| Shock / vibration (typical) |
IS300: 50 G/11 ms; AT315: 40 G/11 ms; Vibration (IS300/AT315): 7.7 Grms, 10–1000 Hz |
| Power (typical) |
Receiver 7–36 V DC; IMU 7–36 V DC; Antenna 3.3–12 V DC |
Included hardware (dimensions, weight, key tech)
| Component |
Size (W×L×H) |
Weight |
Core details |
Operating temp |
Storage temp |
Ingress |
| MCPad300 Display |
281×181×42 mm |
1.5 kg |
10.1″, 1920×1200; Android 14; 8-core up to 2.2 GHz; 6 GB RAM + 64 GB ROM |
−30 °C to +60 °C |
−30 °C to +70 °C |
IP67 |
| MC300 Receiver |
215×154×58 mm |
1.11 kg |
RTK: H 8 mm+1 ppm; V 15 mm+1 ppm |
−30 °C to +65 °C |
−40 °C to +85 °C |
IP67 |
| IS300 IMU Sensor |
48.9×109×27.3 mm |
0.115 kg |
Static ±0.05° RMS; Dynamic ±0.1° RMS; Shock 50 G/11 ms; Vib 7.7 Grms |
−40 °C to +75 °C |
−50 °C to +85 °C |
IP69K |
| AT315 GNSS Antenna |
40×140×55 mm |
0.7 kg |
Gain 40 ± 2 dB; Noise coeff. ≤ 2 dB; Shock 40 G/11 ms; Vib 7.7 Grms |
−40 °C to +75 °C |
−50 °C to +85 °C |
IP68 |
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