Quick Answer
What is the Topcon GTS-240N?
See also: Topcon E-01 Tilt Error Fix
See also: Topcon GT-1000 Total Station Specs
The Topcon GTS-240N is a conventional total station offering 5-arc-second angular accuracy and onboard data storage, used for boundary surveys, construction layout, and topographic mapping.
Topcon GTS-240N — Complete Specs, Manual & Guide
Category: Total Station | Brand: Topcon | Model: GTS-240N
The Topcon GTS-240N is a rugged conventional total station delivering 5-arc-second angular accuracy and an integrated EDM capable of measuring distances to prisms up to 3,000 meters. It supports onboard data storage and is designed for construction layout, boundary surveying, and topographic fieldwork.
Topcon GTS-240N Full Specifications
| Angular accuracy | 5" (1.5 mgon) |
| Measurement method | Absolute encoding, dual axis compensation |
| EDM range (prism) | 3,000m (single prism) |
| EDM range (reflectorless) | 250m to white card |
| Distance accuracy (prism) | ±(2mm + 2ppm x D) |
| Distance accuracy (reflectorless) | ±(5mm + 3ppm x D) |
| Measurement time | 1.2 seconds (fast mode) |
| Telescope magnification | 30x |
| Field of view | 1°30' |
| IP rating | IP54 (dust and splash resistant) |
| Battery life | ~11 hours with BT-65Q |
| Operating temperature | -20°C to 50°C |
| Weight | 5.1 kg (11.2 lbs) with battery |
| Display | Dual-face LCD, alphanumeric keypad |
Accessories & Part Numbers
- BT-65Q — Standard Li-ion battery (included)
- FC-2500 — Compatible field controller for data collection
- RC-3R — Bluetooth remote control for one-person operation
- TP-32 — Traverse prism set
- TK-24 — Hard carry case
Error Codes Quick Reference
| E-01 | Horizontal collimation error — perform two-face calibration |
| E-02 | Vertical index error — run vertical collimation routine |
| E-03 | EDM fault — check prism alignment and clean EDM window |
| E-04 | Compensator error — re-level instrument carefully |
| E-05 | Battery low — replace or charge before continuing |
| E-11 | Communication error — check cable or Bluetooth connection |
Frequently Asked Questions — Topcon GTS-240N
What is the angular accuracy of the Topcon GTS-240N?
The GTS-240N provides 5-arc-second (1.5 mgon) angular accuracy using an absolute encoding system with dual-axis compensation. This is suitable for construction layout, boundary surveys, and topographic mapping.
What is the EDM range on the Topcon GTS-240N?
Using a single 360-degree prism, the GTS-240N measures distances up to 3,000 meters. Reflectorless measurements reach approximately 250 meters to a white card surface. Distance accuracy is ±(2mm + 2ppm) with a prism.
Does the GTS-240N have onboard data storage?
Yes — the GTS-240N includes internal memory capable of storing approximately 24,000 point records. Data can be transferred to a field controller (FC-2500 or similar) via RS-232 or Bluetooth.
Is the Topcon GTS-240N still supported?
The GTS-240N is a legacy model, but service, parts, and accessories remain available through authorized Topcon dealers. It uses the same battery platform (BT-65Q) as current Topcon instruments.
What field software works with the GTS-240N?
The GTS-240N is compatible with Topcon MAGNET Field when paired with a compatible field controller. It also supports third-party software via RS-232 serial communication.
Related models: Topcon GT-1000 | Topcon GT-1200
Track your GTS-240N calibration dates, service history, and field verification records with Gradelog's Equipment Registry. Free to start at gradelog.com.
