. Calculation of areas with display. 
. Measurement of coordinates in time intervals. 
. Output via a serial interface. 
. Test programs, 
2.2. Coordimeter H and ZIF 2 digitizer interface 
The Coordimeter H is a data recording instrument with 
connected peripherals (printer, magnetic tape unit), which 
is based on a microcomputer system with a program on PROM, 
Data format and code can be programmed by the user. A serial 
interface is available for the direct coupling with a digi- 
tal computer. 
While Coordimeter H has primarily been designed for the 
recording of photogrammetric measuring values on data 
carriers for conventional off-line operation, the ZIF 2 
digitizer interface (Fig. 4) allows the connection of 
measuring instrument (max. 4 coordinates) and digital com- 
puter. The ZIP 2 is likewise fitted with & microcomputer, 
which has a serial interface, It contains the power supply 
for the incremental encoders, the counter PC boards and 
the connections to the operating means. Thus the ZIF 2 is 
suitable for the setup of systems with optional measuring 
instruments (also of older construction), if encoders can 
be installed in the measuring instruments. The following 
FORTRAN programs (DICOP) can be made available especially 
for the Dicometer precision stereocomparator in connection 
with the ZIP 2: 
. Calculation of correction parameters from the measuring 
values of grid measurements with 5 ... 25 systematically 
distributed grid points (COSIE) 
. Correction of systematic film and instrument errors 
on the basis of results of a grid measurement and of 
the nominal coordinates of the fiducial marks (INNOR) 
. Calculation of model coordinates after a relative 
orientation of all measuring values (RELOR), 
These programs permit on-line stereotriangulation, The 
program package SAMT (model technique) is available for 
aerotriangulation and block adjustment and the program 
package TEBIT (bundle method) for the terrestrial point 
determination, 
2,3. Digital drawing tables 
The DZT 90 x 120 digital drawing table of JENOPTIK 
JENA GmbH was originally developed only for on-line coupling 
to stereoplotting machines, i.e. for the setup of a system 
with decentral computer equipment, Besides there was also 
the possibility to read in drawing instructions via parallel 
interfaces from punched or magnetic tape (off-line). 
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