Data And Data Handling; Introduction; Point Data; Points In The Form Of Measured Points - Hilti POS 15/18 Mode D'emploi

12 Data and data handling

12.1 Introduction

Hilti total stations always save data in internal memory.
The data consists of measured values, i.e. angles and distances or, depending on settings or the application, values
relative to the building control line such as line and offset values or coordinates.
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With the aid of PC software, data can be exchanged with other systems.
In principle, all total station data should be regarded as point data, with the exception of graphical data in which the
points are incorporated.
The applicable points are available for selection and use, but not the graphics data itself, which simply provides
additional information.

12.2 Point data

Point data can consist of new measured points or existing points. The total station basically measures angles and
distances.
The station setup allows target point coordinates to be calculated.
Accordingly, each point that has been sighted with the cross hairs or laser pointer and the distance to it measured is
calculated by the total station as a three-dimensional point.
These three-dimensional points are clearly identified by point designations.
A point designation, a Y-coordinate, an X-coordinate and possibly a height are given for each point.
Given points are defined by their coordinates or points with graphical elements.

12.2.1 Points in the form of measured points

Measurement data takes the form of measured points generated and saved in memory as coordinate points on the
total station by the relevant application, e.g. Horz. Layout, Vert. Layout, As-built and Measure and Record.
Measured points exist only as a single instance within a station.
If the same name is used again for a measured point, the existing measured point can be overwritten or another point
name assigned to it.
Measured points cannot be edited.

12.2.2 Points in the form of coordinate points

When working with the coordinate system, all positions are, as a rule, defined by a point name and coordinates - at
least a point name and two horizontal coordinates X, Y or E, N are necessary to describe a point position.
The height is generally independent of the XY coordinate values.
The total station uses points in the form of coordinate points - so-called control points or fixed points and measured
points with coordinates.
Fixed points are points with given coordinates, which are entered manually on the total station or transferred from
USB memory or directly by way of a USB cable with the aid of Hilti PROFIS Layout.
These fixed points may also be layout points. A control point (fixed point) in a project is unique (the only one).
Control points or fixed points can be edited on the total station so long as no graphical element is attached to
the point.

12.2.3 Points with graphical elements

With the aid of Hilti PROFIS Layout, graphical data can be transferred from a CAD environment, shown on the screen
and selected for use.
The Hilti system allows points and graphical elements to be created in various ways using Hilti PROFIS Layout, and to
subsequently transfer these to the total station for further use.
Points with attached graphical elements cannot be edited on the total station but can be edited on a PC using
Hilti PROFIS Layout.

12.3 Generation of point data

12.3.1 With the total station

Each measurement taken generates a measurement data set or, respectively, a measured point. Measured points are
defined either only as angle and distance values, point name with angle and distance values or as point name with
coordinates.
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