Minggu, 29 Januari 2012

Topcon total station

GTS-100N

The new Topcon GTS-100N series total station combines the traditional Topcon rugged field-ready quality and accuracy with economical, compact design that is perfect for everyday measuring and positioning applications such as topo and construction layout.

GTS-100N features:

Economical, value priced measuring solution
Rugged, durable, water resistant design
Two accuracies to choose from 2" & 5"
Expanded, Full numeric keypad
On board programs & 24,000 point data storage
Ideal as a construction stakeout total station
Perfect when combined with FC field controller and software

The entry-level value choice is the GTS-100N. Built with legendary Topcon precision and durability, the GTS-100N provides the construction professional with a dedicated lay-out solution. Use the on-board software to layout points in the field, confident that with Topcon, you'll be right on target. Or use any of Topcon's field controllers running one of our range of software packages tailored to the tasks you want to perform.

Specifications
Telescope
Length	150 Millimeters
Objective Lens Diameter	45mm (EDM:50mm)
Magnification	30x
Image	Erect
Field of View	1°30
Resolve Power	3 "
Min. Focus Distance	1.3 meters
Measurement Range
1 Prism	6500 ft, 2000 meters
3 Prism	8800 ft, 2700 meters
Measuring Accuracy
Prism Mode	±(2mm + 2ppm x D)m.s.e. fine, N/A
measurement time	1mm: 1.2sec. (Initial 4sec.) fine, 0.2sec. (Initial 3sec.) coarse, N/A
Angle Measurement
Method	Absolute Reading
Detection	2 horizontal, 1 vertical
Minimum reading	N/A, 1/5 mgon
Tilt Correction
Type	Single Axis
Method	Liquid surface reflective profile sensor reading type
Compensating Range	±3'
Correction Unit	1 arc sec, N/A
Computer Unit
Display	2 screen, dot matrix graphic LCD display
Power
Approximate battery life	9 including distance measurement, 40 Angle measurement only

GLOBAL SURVEY : 085722656444 / 0816629226

apa itu trimble

What is GPS?
The Global Positioning System (GPS) is a worldwide radio-navigation system formed from a constellation of 24 satellites and their ground stations.
GPS uses these "man-made stars" as reference points to calculate positions accurate to a matter of meters. In fact, with advanced forms of GPS you can make measurements to better than a centimeter!
In a sense it's like giving every square meter on the planet a unique address.
GPS receivers have been miniaturized to just a few integrated circuits and so are becoming very economical. And that makes the technology accessible to virtually everyone.
These days GPS is finding its way into cars, boats, planes, construction equipment, movie making gear, farm machinery, even laptop computers.
Soon GPS will become almost as basic as the telephone. Indeed, at Trimble, we think it just may become a universal utility.

How GPS works?
Here's how GPS works in five logical steps:

The basis of GPS is "triangulation" from satellites.
To "triangulate," a GPS receiver measures distance using the travel time of radio signals.
To measure travel time, GPS needs very accurate timing which it achieves with some tricks.
Along with distance, you need to know exactly where the satellites are in space. High orbits and careful monitoring are the secret.
Finally you must correct for any delays the signal experiences as it travels through the atmosphere.

We'll explain each of these points in the next five sections of the tutorial. We recommend you follow the tutorial in order. Remember, science is a step-by-step discipline!

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