1.3.12
STATION ESTABLISHMENT CHAPTER 3
GEODIMETER SYSTEM 600
PRG
20
1&3 Known Station
When establishing a station at a known point, you will only
need the point numbers for your station point and reference
object. The instrument will then calculate bearing and dis-
tance automatically. To increase the accuracy of the bearing
a new routine called "Known Station+" has been
implemented in the instrument. By using this function you
can measure to up to ten reference objects and also obtain a
standard deviation (S_dev). See more about this routine on
page 1.3.21.
When running Known Station in P20, you decide whether or
not elevations are to be used in other calculation programs.
Here you also indicate in what Job file station data and
possibly other data to be calculated later will be stored, and
in what Area file the coordinates are stored.
See on page 1.3.31 what is stored in the selected Job file
when a Known Station has been established
.
Preparations
Before station establishment can take place, the coordinates
and point numbers must be stored in an Area file — either in
the internal memory or in an external memory such as Card
Memory or Geodat — using P43 (Enter Coordinates) or
downloaded from a computer. These coordinates are then
used in P20 when you retrieve the correct Area file and Pno.
You choose free station establishment when the station point
is unknown — that is, N, E and possibly ELE will have to be
calculated. This function allows free establishment in which
several different combinations of objects, angles and
distances can be used. The calculation is a combination of
resectioning and triangulation. If you make several
measurements, you obtain not only the mean value but also
the standard deviation (S_dev). The calculation is done
according to the least square adjustment method. If good
2. Free Station
In general
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