![]() |
GRASS Help System |
This file covers how to set up the hardware for a Kurta digitizer.
To prepare the Kurta digitizer for map development use.
There are two sets of switches on the back. The set of 8 switches should be set to this:
The second set of switches controls the baud rate and should be this:
The cabling between the digitizer and the computer differ for different computers. Some known cable configurations that have worked:
--- -----
---- -----
A straight thru ribbon cable will work on the Masscomp or just the pins listed above 2, 3, 5, 7.
If the v.digit program isn't working, make sure that the tty the digitizer is on has the getty off, the tty permissions are set to 'crw-rw-rw', the 'digitcap' file is correct for your system configuration, and the switch settings on the digitizer are correct. There are some diagnostic programs under $GISBASE/src/mapdev/digitizers/kurta/Diagnostics. Read the README file in the Diagnostics directory for specific information on the programs. If none of the programs work, then there is something wrong with either the cabling or the digitizer.
---------------------------------------------------------------------Additional Documentation for Kurta Digitizers:
KURTA Corporation 4610 South 35th Street Phoenix, Arizona 85040 ph. (602) 276 - 5533
Documentation for Kurta series III. 16 button cursor.
'v.digit' is using the Kurta output binary format 2. Cursor buttons are used in this device driver.
Notes: Kurta does not remember any programmable commands after a reset or the power is turned off.
ASCII output bytes are multiplied by a power of 10. Binary output is multiplied by power of 2.
X and Y are same resolution.
Status is the number of the button pushed on the cursor, unless the digitizer is in remote (request) mode; then its always 0.
Problems:
Can only get output from Kurta for format 8 in remote (request) mode.
Format 7 is sporadic in point mode. Meaning that the characters read have no pattern.
----------------------------------------------------------------README file:
There are diagnostic programs for the Kurta in the sub-directory Diagnostics.
The code in the B directory is for the ucb universe before it was rewritten for the ATT universe.
The file DOC contains documentation for the Kurta digitizer (for programmers who wish to expand the capabilities of the device driver).