Topcon GPT-8003A 3" Robotic Total Station

Quick Overview

Topcon GPT-8003A 3-inch Accuracy Full Robotic Total Station
Item ID: X2946-L/T* X2947-L/T* X2945-L/T*
Condition: Refurbished
Warranty: 90 Day Exchange


* Topcon GPT-8003A 3" Full Robotic Total Station [ID- X2946-L/T*]
* Topcon RC-2RW Remote Control [ID- X2947-L/T*]
* Topcon Prism [ID- X2945-L/T*]
* Topcon BC-27BR Battery Charger
* RS-232 Power Cable
* Lens Cap
* Sun Shade
* Rain Cover For Unit
* Assorted Tool Kit
* User Manual On CD-ROM
* Hard Carrying Case


Topcon GPT-8003A Full Robotic Total Station

The New Topcon GPT-8003A series is a true first. The fastest, most flexible Solo Surveying System combining non-radio data communication and distance measurement without a prism. The system comprises the Topcon auto tracking total station, the unique Infrared communication device RC-2 II, Topcon Field controller FC-1000 and the Topcon TopSURV controller software.

A complete, unique, solo surveying system from one manufacturer with over 70 years of experience in supplying leading technology surveying instrumentation.

The GPT-8003A series are non-prism total stations with built in auto tracking offering the option for one person surveying from behind the instrument or at the prism.

Unique Remote Control
Topcon’s system for solo surveying is based on a unique principle using an optical data link for communication between the prism position and the instrument. Using the GPT-8003A with the remote control device, RC-2 II, the surveyor can “talk” to the total station, giving instructions to measure and tell the instrument where the prism is after a loss of lock.  What is more, the total station can “talk” back to the surveyor, sending all the measured data for storage in the handheld controller unit. No radios are needed, no interference or reception problems, no missing or corrupted data. The optical data link puts you in control.

Fast auto tracking
GPT-8003A has a very fast tracking speed of 12º per second ensuring that loss of lock only normally occurs due to obstructions and not due to the movement of the prism. 12º/sec is approximately equivalent to 75 km/h at 100m. This results in reliable prism lock and better performance in machine control and other applications where fast or erratic movements can be expected. The GPT-8000A series uses a new CCD tracking system, which identifies the prism and ensures only the prism can be followed by the instrument. This system increases the speed and reliability of tracking.

Super Fast Find
The super “Fast Find” function is a major advantage of the system ensuring quick re-location of the prism after loss of lock, with the simple press of a button. Using Topcon’s unique laser optical communication technique the RC-2 II directs the total station to the prism position. Weighing only 300 grams and the size of a small pocket calculator, the RC-2 II, when activated, sends a signal, which is detected by the total station. The total station then quickly turns to the correct direction and vertical angle setting to locate the prism.

Fast Auto Lock
The area around the prism where auto lock is activated has been increased from 1º to 5º in the GPT-8003A. This allows the prism to be identified within a wider field of view so that automatic sighting takes over from manual sighting sooner and only rough pointing to the target is necessary

Reflectorless measurement
To offer complete flexibility to your surveying procedures the GPT-8003A can measure in non-prism mode over a distance of 120 meters.  This gives the added benefit to the surveyor working on his own, of being able to work behind the instrument to pick up those inaccessible of difficult to reach points.


Objective lens
Field of view
 1° 30’
Resolving Power
Minimum focus
1 speed
Max. revolving speed
Max. auto tracking speed
Auto tracking range
Driving range
All range revolving
Search range
 User definable
Coarse Movement
 Shuttle control (7 speeds)
Fine Movement
Jog control (Min. 1 sec.)
Positioning accuracy
 standard deviation 3"
Measurement range Mini prism
1,500 (visibility approx.20km)
Standard Prism
7,000 (visibility approx. 20km)
Measuring accuracy
 ± (3mm+2ppm)m.s.e
Minimum reading
Fine 0.2mm/1mm Coarse 1mm/10mm
Measuring time(initial)
Fine 1mm mode approx. 1.2 sec. (3 sec)
Absolute encoder
Horizontal : dual Vertical : dual
Minimum reading
 5"/1" (1.0mgon)
  3" (1.0mgon)
Dual Axis
Compensating range
Circular level
Plate level
Optical plummet Erect 3x
Laser Class
class 2
Optical Communication
 Optional RC-2 II