Quick Answer
What is the Topcon GT-1003?
See also: Topcon GT-1000 Total Station
See also: Topcon PS-103 Imaging Total Station
The Topcon GT-1003 is a 3-arc-second robotic total station with Long Range Autolock, RC-4 wireless control, and a 5,000-meter EDM range. It supports MAGNET Field for one-person layout workflows.
Topcon GT-1003 — Complete Specs, Manual & Guide
Category: Total Station | Brand: Topcon | Model: GT-1003
The Topcon GT-1003 is a robotic total station from Topcon's GT-1000 series, delivering 3-arc-second angular accuracy with Long Range Autolock target tracking to 2,000 meters. One operator can set up the GT-1003, move to the prism, and control measurement from the RC-4 wireless controller or a paired field controller, eliminating the need for a second person at the instrument.
Topcon GT-1003 Full Specifications
| Angular accuracy | 3" (1.0 mgon) |
| EDM range (prism) | 5,000m |
| EDM range (reflectorless) | Up to 500m |
| Distance accuracy (prism) | ±(2mm + 2ppm x D) |
| Autolock range | Up to 2,000m |
| Long Range Autolock | Yes |
| Servo slew speed | Up to 180 degrees/second |
| Telescope magnification | 30x |
| Connectivity | RC-4 wireless remote, Bluetooth, Wi-Fi |
| IP rating | IP54 |
| Battery life | ~8 hours |
| Operating temperature | -20°C to +50°C |
| Weight | 5.2 kg (11.5 lbs) |
Accessories & Part Numbers
- FC-6000 — Topcon FC-6000 field controller
- RC-4 — Wireless robotic remote control
- 360-degree prism — Topcon-compatible 360-degree prism set
- MAGNET Field — Topcon field software for layout and survey
Error Codes Quick Reference
| E-01 | Compensator tilt exceeded — re-level instrument |
| E-03 | EDM fault — clean optical windows |
| E-05 | Autolock tracking lost — clear line of sight and reacquire |
| E-09 | Servo overload — check for mechanical obstruction |
Frequently Asked Questions — Topcon GT-1003
What is the Topcon GT-1003 angular accuracy?
The GT-1003 delivers 3-arc-second (1.0 mgon) angular accuracy using an absolute encoding system with dual-axis compensation. This is suitable for construction layout, topographic surveys, and general engineering surveys.
What is Long Range Autolock on the GT-1003?
Long Range Autolock allows the GT-1003 to lock onto and track a prism at distances up to 2,000 meters in good visibility conditions. This is significantly farther than standard Autolock implementations on entry-level robotic instruments.
What is the difference between the GT-1003 and GT-1000?
The GT-1003 adds Long Range Autolock capability over the base GT-1000 model. Both instruments share the same 3-arc-second accuracy and 5,000-meter EDM range. The GT-1003 is better suited for large-scale layout projects where operator-to-instrument distances exceed 500 meters.
What field software works with the GT-1003?
The GT-1003 uses Topcon MAGNET Field on the FC-6000 or FC-5000 field controller. MAGNET Field supports layout, stakeout, traverse, and surface modeling workflows.
Can the GT-1003 be used for scanning?
No — the GT-1003 does not have scanning capability. For imaging and scanning workflows, Topcon offers the PS-103 imaging total station. The GT-1003 is a conventional robotic total station for measurement and layout.
Related models: Topcon GT-1000 | Topcon GT-1200
Track your GT-1003 calibration dates, service history, and field verification records with Gradelog's Equipment Registry. Free to start at gradelog.com.
