454
with d.c. servomotors through & gear. A separate measuring
system ascertains the actual coordinates. The entire electronic
system is housed in a separate electric cabinet. The equip-
ment is under the control of microcomputers. Operation is
effected by pushbuttons which are clearly arranged on the
control desk, The DZT is distinguished by the following features:
double lifting magnet, optional correlation to the plotter,
scale selection between 0.01 and 9,99, alternative display of
^
plotting table coordinates, drawing of 5 symbols in O sizes,
straight-line joining of measuring points, synchronous follow-
ing, 4 different types of lines with three selectable line
lengths, change-over to manual control without.loss of correls-
tion to the measuring system, precise setting of points,
print-out of height numbers, electrostatic fixation, and addi-
tional off-line control of the plotting table by magnetic
tape.
The computer-aided plotting system is an extension of the di-
gitial plotting table by & computer, Thus the plotting table
software could be extended and possibilities of application
were essentially increased, Operation of the system is via the
keyboard of the display.
An additional functional keyboard simplifies operation,
so that it involves no problems,Compared with the DZT 90 x 120
the computer-aided plotting system has further particular
advantages such as calculation of absolute orientation, calcula-
tion of plotting table orientation, calculation of rectangu-
larity for drawing buildings, closing of polygons, hatching
of areas, calculetion and plotting of parellel lines, alpha-
numeric lettering at any angle, free generation of symbols,
signatures and line types.
Technical data
Image size
Viewing magnification
Field of view referred to image
plane
Fiducial mark diameter
Eyepiece distance
Eyepiece focussing
X-, y-movement
z-movement
Calibrated focal length c,
ngitudinal tilt 9-
teral tilt o e
1?
Common longitudinal tilt @
Image rotation X
ne
Base component by
—
TT
23rem:-x.23..cm
7X
32-«mm
freehand guidance with
handwheels
coarse motion 55 mm/rev.
fine motion 1.89 mm/rev.
With foot disk 5 mm/rev.
o4 mm to. 941. mm
149 mm tfo 156 mm
209 mm to 216 mm
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