The TOPCON Imaging Total Station

Capture Reality

During Intergeo 2004 in Stuttgart , Topcon unveiled a revolution in Surveying Instrumentation in the form of the GPT-7000i. This is the world's first Total station to incorporate the very latest digital imaging technology to enhance Total Station fieldwork and extend the range of applications for the total station.

The implementation of imaging technology allows the image seen through the telescope to be viewed on the display screen of the instrument. This not only makes it easy to point the telescope to the required object for measurement, but instead of only the traditional map view of the surveyed points on the screen, you now see the measured points and lines appear on the real view of the area being measured. In addition you can now “Capture Reality� by storing the digital image along with the measurement data.

Surveying changed forever

Imagine the impact this revolution could have on traditional surveying work:

Easy identification of measurement points, with prism or non-prism measurement.
Remove the strain of looking through the telescope to identify every point.
See the view through the telescope easily on those steeply inclined shots normally needing an additional eyepiece attachment.
Easy visualization of the points already measured and those that may have been missed!
See your stake out points superimposed on the real view of the site before you start setting out.
Easy verification that stake out has been completed by the indication on the real view screen.
Verification of site conditions and features to improve survey documentation.
Visualization of Control points captured at the time measurements are recorded to aid relocation.
Visual records of site features to aid office processing of survey data.
Reduce the need for site sketches by having true digital images showing the measured points recorded at the time of the survey.
Select wide-angle view or measurement point view and record either or both images at the time of measurement.

Reflectorless Measurement Surveys

For certain specialist applications, such as building façade measurements, the GPT-7000i is ideally suited having reflectorless measurement capability upto 250m range. And with the building façade all in view on the display screen, point identification is easy. The need for multiple visits to the site to make reconnaissance sketches and photographs is eliminated.

Reflectorless measurement to corner points is made easier and more accurate with the GPT-7000i. Imaging techniques are used to perform “Auto-Edge Extraction� to define corner points more accurately than any non-prism measurement technique alone can do.

For accident investigation or environmental disaster surveys the advantages of the GPT-7000i are self evident. Visual records of the scene at precisely the time of the measurement survey are valuable documentation that can be used to enhance the results of the survey and count as legal evidence.

Instrument Features

The GPT-7000i is based on the standard TOPCON GPT-7000 series of reflectorless total stations with the addition of the digital imaging technology.
The standard features of the total station lead the field for their advanced technology and ease of use.

Windows CE.NET operating system for broad range compatibility with other hardware and software.
The GPT-7000i is available in 4 models with angle accuracy 1�(0.3mgon), 2�(0.6mgon), 3�(1.0mgon) and 5�(1.5mgon)
Graphical, colour touch screen display on 2 sides. (Except GPT-7005, 1 side)
Compact flash card slot
USB interface port.
Bluetooth capable for data transfer via GSM/Internet.
Large 64MB internal memory.

EDM Features

250m non-prism measuring range. 3000m range to a single prism
Non-prism measuring accuracy 5mm
Prism measuring accuracy 2mm+2ppm (under 25m: 3mm)
Class 1 laser for distance measurement. Class 2 visible laser for laser pointer.
Advanced pulse laser technology with a very stable measuring spot, to measure to corners and difficult surfaces accurately.

One Software- One Surveying System

Instrument software TopSURV-On Board, is used to control the total station and provide full functionality for survey and stake out. In addition the image capabilities are enhanced in the special software module for the GPT-7000i.
Easy user interface and compatibility between Topcon Robotic systems and Topcon GPS surveying systems.
Advanced Roads Routines provided as standard in TopSURV-On Board.

Telescope

Length : 150 mm
Objective lens diameter : 45 mm ( EDM 50 mm )
Magnification : 30 x
Image : erect
Field of view : 1°30'
Resolving power : 2.8�
Minimum focus distance : 2.0 m

Distance measurement

Measuring range

Non-prism mode :
In low light condition and without sun glare on target : 1.5 to 250 m ( 5 to 820 ft. )
Prism mode :
Condition 1 ( 1 prism ) : 3,000 m ( 9,900 ft. )
Condition 1 : sight haze with visibility about 20 km ( 12.5 miles ) moderate sunlight with light heat shimmer

Measurement accuracy

Non-prism mode
1.5 m or more ( 5 ft. or more ) : ± 5 mm

Prism mode
To 25 m : ± ( 3 mm + 2 ppm x D * ) m.s.e.
25 m or more : ± ( 2 mm + 2 ppm x D * ) m.s.e.

Least count in measurement

S. Fine measurement mode : 0.2 mm ( 0.001 ft. )
Fine measurement mode : 1 mm ( 0.005 ft. )
Coarse measurement mode : 1 mm ( 0.005 ft. )
Tracking measurement mode : 10 mm ( 0.02 ft. )
Measurement display : 11 digits: max. display ± 9999999.9999

Measuring time

S. Fine measurement mode : 0.2 mm : Approx. 3.0 sec. ( Initial 4.0 sec. )
Fine measurement mode : 1 mm : Approx. 1.2 sec. ( Initial 3.0 sec. )
Coarse measurement mode : 1 mm : Approx. 0.5 sec. ( Initial 2.5 sec. )
Tracking measurement mode : 10 mm : Approx. 0.3 sec. ( Initial 2.5 sec. )

Angle measurement

Method : absolute reading
Horizontal : 2 sides
Vertical : 2 sides
Minimum reading : 0.5� / 1 “ ( 0.1 / 0.5 mgon )
Accuracy ** : 1� ( 0.3 mgon )
Diameter of circle : 71 mm

Tilt correction

Type : dual axis
Method : liquid type
Compensating range : ± 4'
Correction unit : 1� ( 0.1 mgon )

Computer unit

OS : Microsoft® Windows® CE.NET 4.2
Processor : Intel XPA 255 400 MHz

Memory :

RAM : 128 MB ( SDRAM )
ROM : 2MB ( FlashROM ) + 256 MB ( Flash Memory ) ( A portion is used for pre-installed programs and data management functions )
Display unit : 320 x 240 ( QVGA ) dots Graphic LCD TFT color display with back lights and touch panel function; 2 sides
Card system : CompactFlashâ„¢ Card ( Type I/II )

Interface

Serial I/F port : RS-232C ( 6 pin ); USB ( Type Mini – B ) for ActiveSync ®

Others

Instrument height : 182 mm ( 7.2 in. )

Level sensitivity

Circular level : 10'/2 mm
Plate level : 30�/2 mm

Optical plummet

Magnification : 3 x
Focusing range : 0.5 to infinity
Image : erect
Point guide : provided
Dimension : 343 mm ( H ) x 245 mm ( W ) x 219 mm ( L ) / 13.5 ( H ) x 9.6 ( W ) x 8.6 ( L ) in.

Weight

Instrument ( with battery ) : 6.5 kg ( 13.6 lbs. )
Plastic carrying case : 4.7 kg ( 10.3 lbs. )

Durability

Protection against water and dust : IP54 ( Based on the standard IEC60529 )
Ambient temperature : -20°C to +50°C ( -4°F to +122°F )
Laser class : class 1 ( for distance measurement ); class 2 ( Laser Pointer On )

On-board lithium-ion battery BT-16Q ( this battery does not contain mercury )
Output voltage : DC 7.4 V

Capacity :

Maximum operating time at -20° ( +68°F ) : 4,400 mAh
Including distance measurement : Approx. 3.5 hours
Angle measurement only : Approx. 6 hours

Weight : 0.2 kg ( 0.4 lbs. )

Battery charger BC-30

Input voltage : AC100-240V
Frequency : 50/60 Hz
Recharging time ( at -20° / +68°F ) : 4 hours
Ambient temperature range : +10°C to +40°C ( +50°F to 104°F )
Weight : 0.15 kg ( 0.3 lbs. )