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DET C SYS
Step 5: Determine Scale
Determine Coordinate System - One Point Localisa-
tion
This screen contains different fields, depending on the <Method:> selected. The explana-
tions for the softkeys given below are valid as indicated. The scale is calculated using the
formula (r + h)/r where r is the distance from the centre of the ellipsoid to the WGS 1984 point
selected in DET C SYS Step 3: Choose Common Point and h is the height of this point
above the WGS 1984 ellipsoid.
Description of common fields
Field
Option
<Method:>
User Entered,
Known WGS84 Pt
or Known WGS84
Ht
CONT (F1)
To confirm the selections and to continue with
the subsequent screen.
SCALE (F4) or PPM (F4)
To switch between <Scale:> displaying the
true scale and displaying the ppm.
SURVY (F5)
Available for <Method: Known WGS84 Pt:>
when <WGS84 Point:> is highlighted. To
manually occupy a point and store it in
<WGS84 Pts Job:>.
Description
Method of determining the scale factor of the transfor-
mation.
GPS1200+
992
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